CN110054567B - 一种enobin轴手性化合物及其合成方法 - Google Patents
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Abstract
本发明属于轴手性化合物领域,公开了一种ENOBIN轴手性化合物,其具有如下通式:Ar为或其中,R1、R2各自独立地选自氢、烷基、炔基、烯基、苯基、烷氧基、氨基、卤素、三氟甲基、氰基、羟基、醛基、羧基、乙酰基、酯基、硝基、酰胺基、磺酰基、磺酸基、巯基、硫烷基;R3选自烷基、苯基、取代苯基;R4选自氢、烷基、炔基、烯基、烷氧基、卤素、氰基、羟基、醛基、羧基、酯基;n为0或1;R9为烷氧基。本发明还公开了ENOBIN轴手性化合物的合成方法,本发明设计了一种结构新颖的轴手性ENOBIN化合物,其具有独特的空间构型,是BINOL和SPINOL骨架的补充;通过手性酸催化芳基炔烃的不对称氢化芳基化来构建ENOBIN骨架,具有良好的产率、优异的E/Z选择性和对映选择性。
Description
技术领域
本发明属于轴手性化合物领域,具体涉及一种ENOBIN轴手性化合物及其合成方法。
背景技术
自1980年以来,带有轴手性1,1'-联萘骨架的BINOL作为不对称过渡金属催化的配体而广泛应用。但是对于一些特定类型的反应,对映选择性效果不佳,因此,又开发了TADDOL和SPINOL手性骨架的配体。目前在寻找不对称反应的配体或者催化剂时,通常同时筛选BINOL和SPINOL衍生物。轴手性BINOL和SPINOL化合物已经广泛应用于不对称催化领域,然而仍然有必要探索新型结构骨架的轴手性配体。
发明内容
炔烃的官能化是构建烯烃的有效方法之一,炔烃的活化通常依赖于过渡金属催化。2012年,Freccero的研究小组用2-亚炔基酚通过辐射的激发态质子转移获得亚乙烯基-醌甲基化物(VQMs),在接下来的几年中,Irie和Yan的研究小组先后报道了利用手性有机碱催化的不对称分子内杂Diels-Alder反应原位形成VQMs。这些结果表明,邻羟基苯基能够在没有过渡金属催化的温和条件下实现炔基官能化,通过VQM可以对炔烃的分子间亲核加成进行轴手性控制。手性双功能酸用于许多不对称反应,发明人设想手性酸活化炔烃进而提供亲电子VQM,随后加入亲核萘酚,最终形成ENOBIN。
本发明的目的是设计一种双取代的ENOBIN(1,1'-(乙烯-1,1-二基)联萘酚胺)化合物,这种轴手性骨架可以作为NOBIN配体/催化剂的有益补充。
本发明的另一目的是提供该ENOBIN轴手性化合物的合成方法。
为达到上述目的之一,本发明采用以下技术方案:
一种ENOBIN轴手性化合物,其具有如下通式:
其中,R1、R2各自独立地选自氢、烷基、炔基、烯基、苯基、烷氧基、氨基、卤素、三氟甲基、氰基、羟基、醛基、羧基、乙酰基、酯基、硝基、酰胺基、磺酰基、磺酸基、巯基、硫烷基;
R3选自烷基、苯基、取代苯基;
R4选自氢、烷基、炔基、烯基、烷氧基、卤素、氰基、羟基、醛基、羧基、酯基;
n为0或1;
R9为烷氧基。
进一步地,R1选自氢、烷基、苯基、烷氧基、卤素、酯基、羟基。
进一步地,R1选自氢、甲基、苯基、甲氧基、溴、酯基、羟基。
进一步地,R2选自氢、烷基、炔基、苯基、卤素、烷氧基。
进一步地,R2选自氢、甲基、叔丁基乙炔基、苯基、溴、甲氧基。
进一步地,R3选自烷基、苯基、卤代苯基;R4选自氢、卤素、氰基、酯基。
进一步地,R3选自叔丁基、异丙基、乙基、苯基、氯代苯基、溴代苯基。
进一步地,R4选自氢、氯、氰基、酯基。
进一步地,R9为甲氧基。
一种上述的ENOBIN轴手性化合物的合成方法,包括以下步骤:以手性磷酸为催化剂,式A化合物和式B化合物反应,得到ENOBIN轴手性化合物:
进一步地,所述手性磷酸选自以下结构之一:
其中,R5选自苯基、1-萘基、9-蒽基、9-菲基、4-苯基-苯基、3,5-二三氟甲基-苯基、3,5-二叔丁基-苯基、2,4,6-三甲基苯基、2,4,6-三异丙基苯基、2-萘基、4-三氟甲基-苯基、4-(2-萘基)-苯基;
XH为OH或NHTf,R6选自2,4,6-三异丙基苯基、9-蒽基、9-菲基、苯基、1-萘基、4-苯基-苯基、3,5-二三氟甲基-苯基、3,5-二叔丁基-苯基;
R7选自9-蒽基、9-菲基、1-萘基、4-苯基-苯基、3,5-二三氟甲基-苯基、3,5-二叔丁基-苯基、2,4,6-三甲基苯基;
R8为9-菲基,X为氢或溴。
进一步地,R5选自苯基、1-萘基、9-蒽基、9-菲基、4-苯基-苯基、3,5-二三氟甲基-苯基、3,5-二叔丁基-苯基、2,4,6-三甲基苯基、2,4,6-三异丙基苯基。
进一步地,XH为OH或NHTf,R6选自2,4,6-三异丙基苯基、9-蒽基、9-菲基。
进一步地,R7选自9-蒽基、9-菲基。
进一步地,R8为9-菲基,X为氢或溴。
进一步地,所述手性磷酸的用量至少是1mol%。催化剂的用量的基准是相对于式B化合物的用量,比如,催化剂的用量写成1mol%的形式,指每1mol式B化合物使用0.01mol催化剂。
进一步地,所述反应以二氯甲烷、四氯化碳、苯、甲苯、三氟甲苯中的一种或多种为溶剂。
进一步地,所述式A化合物和式B化合物的摩尔比为1~3:1。
进一步地,所述反应的温度0℃以上。
在化合物A~I、1~3中,R1的取代位置可以是萘环的3、4、5、6、7、8位,R2的取代位置也可以是萘环的3、4、5、6、7、8位。
本文所用的“烷基”指饱和脂肪族烃基团,其为包含1至20个碳原子的直链或支链基团,优选含有1至12个碳原子的烷基,更优选含有1至6个碳原子的烷基。烷基基团的实例包括甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、叔丁基、戊基、2-戊基、异戊基、新戊基、己基、2-己基、3-己基、3-甲基戊基。
本文所用的“烯基”指具有至少一个碳-碳双键的不饱和的支链或直链烷基基团,所述双键通过从母体烷基的相邻的碳原子上去除一分子氢而得到。优选含有2至20个碳原子的烯基,更有选含有2至6个碳原子的烯基。所述基团可以关于一个或更多个双键呈顺式或反式构型。典型的烯基基团包括但不限于乙烯基;丙烯基,如丙-1-烯-1-基、丙-1-烯-2-基、丙-2-烯-1-基(烯丙基)、丙-2-烯-2-基;丁烯基,如丁-1-烯-1-基、丁-1-烯-2-基、2-甲基-丙-1-烯-1-基、丁-2-烯-1-基、丁-2-烯-1-基、丁-2-烯-2-基、丁-1,3-二烯-1-基、丁-1,3-二烯-2-基。
本文所用的“炔基”指具有至少一个碳-碳三键的不饱和的支链或直链烷基基团,所述三键通过从母体烷基的相邻的碳原子上去除两分子氢而得到。优选含有2至20个碳原子的炔基,更优选含有3至6个碳原子的炔基。典型的炔基基团包括但不限于乙炔基;丙炔基,如丙-1-炔-1-基、丙-2-炔-1-基;丁炔基,如丁-1-炔-1-基、丁-1-炔-3-基、丁-3-炔-1-基;3,3-二甲基丙-1-炔-1-基(叔丁基乙炔基)。
本文所用的“烷氧基”指-O-(烷基),烷基的定义如本文所述,烷氧基的非限制性实例包括:甲氧基、乙氧基、丙氧基、异丙氧基、正丁氧基、仲丁氧基、叔丁氧基、戊氧基、2-戊氧基、异戊氧基、新戊氧基、己氧基、2-己氧基、3-己氧基、3-甲基戊氧基。
本文所用的术语“卤素”指氟、氯、溴和碘。
本文所用的“羟基”指基团-OH。
本文所用的“醛基”指基团-CHO。
本文所用的“羧基”指基团-COOH。
本文所用的“酯基”指-C(O)O(烷基),其中烷基如本文所定,既可以由苯环的酚羟基与羧酸形成,如PhOCOCH3,也可以由苯环的羧基与醇形成,如PhCOOCH3。
本文所用的“氰基”指-CN。
本文所用的“三氟甲基”指-CF3。
本文所用的“硝基”指-NO2。
本文所用的“磺酰基”指以下基团:-S(O2)-(烷基)、-S(O2)-(氨基)。烷基、氨基的定义如本文所述。
本文所用的“磺酸基”指-SO3H。
本文所用的“巯基”指-SH。
本文所用的“硫烷基”指-S-(烷基),烷基的定义如本文所述。
本文所用的“氨基”指-NH2。
本文所用的“酰胺基”指基团-CONRbRc,其中Rb选自H氢、烷基,Rc选自烷基;烷基的定义如本文所述。
本文所用的“乙酰基”指-COCH3。
本文所用的“取代苯基”指烷基、炔基、烯基、烷氧基、氨基、卤素、氰基、羟基、醛基、羧基、酯基取代的苯基。
本文所用的“卤代苯基”指氟、氯、溴和碘取代的苯基,取代基的个数是一个或多个。
以下缩写和术语自始至终具有指出的含义:
EA指乙酸乙酯;PE指石油醚;DCM指二氯甲烷;HPLC指高压液相色谱;m/z指质荷比;minor指次要产物;major指主要产物;Ph指苯基;TEA指三乙胺;NBS指N-溴代丁二酰亚胺;tBu指叔丁基;iPr指异丙基。
本发明具有以下有益效果:
1、本发明设计了一种结构新颖的轴手性ENOBIN化合物,其具有独特的空间构型,是BINOL和SPINOL骨架的补充。
3、本发明利用合成的ENOBIN化合物可以衍生出手性磷酸,作为不对称反应的催化剂,表明此类ENOBIN化合物具有很好的应用前景。
附图说明
图1是化合物5k的X射线衍射晶体结构。
具体实施方式
下面结合具体实施例对本发明做进一步的说明。
除非另有说明,所有溶剂和试剂均购自商业化产品并且无需进一步纯化。薄层色谱分析(TLC)使用60GF254硅胶板。硅胶柱层析使用青岛海洋硅胶(粒径0.040-0.063mm)。TLC显色采用UV光(254nm,365nm)。核磁图谱使用Bruker DPX 400NMR表征,400MHz记录1HNMR,101MHz记录13C NMR,溶剂为氘代二氯乙烷、氘代氯仿、氘代丙酮或氘代DMSO,四甲基硅烷(TMS)作为内标。化学位移的单位是ppm,耦合常数的单位是Hz。δ表示化学位移,s表示单峰,d表示双峰,t表示三重峰,q表示四重峰,m表示多重峰。通过Agilent手性HPLC仪器和大赛璐CHIRALCEL、CHIRALPAK色谱柱测定对映体过量值。
实施例1
底物的合成
通用步骤A
向装有搅拌棒的100mL Schlenk管中加入2-萘胺C(20.0mmol),PdCl2(177mg,1.0mmol),rac-BINAP(2,2'-双二苯膦基-1,1'-联萘,1.25g,2.00mmol),Cs2CO3(13.0g,40mmol)和60mL无水甲苯。将混合物用氩气鼓泡脱气10分钟,然后在100℃下搅拌过夜。将得到的混合物用60mL EA稀释,用2×50mL H2O和30mL食盐水洗涤,用Na2SO4干燥并减压浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到产物D。
通用步骤A-1
向搅拌的苄基三乙基氯化铵(2.51g,11.0mmol)的MeOH(20mL)溶液中加入ICl(1.79g,11.0mmol),将溶液在室温下搅拌5分钟,得到TEBAICl2。将所得混合物缓慢加入搅拌的D(10.0mmol)的DCM(20mL)溶液。20分钟后,将棕色混合物依次用20mL 0.2M Na2S2O3、40mL饱和NaHCO3溶液和食盐水洗涤,用Na2SO4干燥并减压浓缩,残留物E不经进一步纯化直接用于下一步骤。
在氩气保护下,向装有搅拌棒的100mL Schlenk管中加入粗产物E(10.0mmol),3,3-二甲基-1-丁炔(3.69mL,30mmol),Pd(PPh3)2Cl2(702mg,1.00mmol),CuI(381mg,2.00mmol)和40mL TEA。混合物在120℃下搅拌36至72小时,通过TLC监测,反应完成后,将得到的混合物用50mL EA和50mL H2O稀释,分离有机层并用40mL H2O和40mL食盐水洗涤,用Na2SO4干燥并减压浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到粗产物,通过PE/EA重结晶得到目标化合物2。
通用步骤A-2
向搅拌的B(3.00mmol)的DMF(20mL)溶液中缓慢加入NBS(534mg,3.00mmol),将所得溶液在室温下搅拌0.5小时,然后用60mL H2O稀释,并用2×30mL EA萃取,将合并的有机层用4×30mL H2O和30mL食盐水洗涤,用Na2SO4干燥并减压浓缩,通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到化合物F。
在氩气保护下,向装有搅拌棒的100mL Schlenk管中加入化合物F(2.0mmol),3,3-二甲基-1-丁炔(1.23mL,10mmol),Pd(PPh3)2Cl2(140mg,0.20mmol),CuI(114mg,0.60mmol)和40mL哌啶。将混合物在120℃下搅拌36至72小时,通过TLC监测,反应完成后,将得到的混合物用30mL EA和30mL H2O稀释,分离有机层并用30mL H2O和30mL食盐水洗涤,用Na2SO4干燥并减压浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到粗产物,通过PE/EA重结晶得到目标化合物2。
采用通用步骤A-1,为浅黄色固体(82%收率)。
1H NMR(400MHz,CD2Cl2)δ8.15(d,J=8.4Hz,1H),7.74(d,J=8.1Hz,1H),7.68(d,J=9.0Hz,1H),7.53–7.49(m,1H),7.45(d,J=9.0Hz,1H),7.35–7.29(m,3H),7.19–7.16(m,2H),6.74(s,1H),1.47(s,9H)。13C NMR(101MHz,CD2Cl2)δ143.17,141.33,134.91,129.90,129.19,128.98,128.65,127.74,127.50,125.38,124.16,121.46,116.20,111.61,105.29,73.89,31.69,29.32。HRMS(ESI)精确质量计算[M+H]+C22H21NCl+,m/z:334.1357,实测值:334.1349。IR(KBr,cm-1)3402,2968,1589,1489,1302,812。M.P.105-106℃。
采用通用步骤A-1,为灰色固体(59%收率)。
1H NMR(400MHz,CDCl3)δ8.01(d,J=8.5Hz,1H),7.55(d,J=9.0Hz,1H),7.47(s,1H),7.37(d,J=9.0Hz,1H),7.32(dd,J=8.6,1.8Hz,1H),7.28–7.24(m,2H),7.10(d,J=8.7Hz,2H),6.61(s,1H),2.46(s,3H),1.44(s,9H)。13C NMR(101MHz,CDCl3)δ141.91,141.10,133.23,132.64,129.49,128.75,128.11,127.31,126.90,124.95,120.66,115.97,110.78,105.12,73.73,31.55,28.93,21.51。HRMS(ESI)精确质量计算[M+H]+C23H23NCl+,m/z:348.1514,实测值:348.1507。IR(KBr,cm-1)3389,2968,1595,1499,1323,818。M.P.132-133℃。
采用通用步骤A-2,为淡黄色固体(65%收率)。
1H NMR(400MHz,丙酮-d6)δ8.25(d,J=8.7Hz,1H),8.09(d,J=1.7Hz,1H),7.86(d,J=8.8Hz,2H),7.80–7.77(m,2H),7.52–7.48(m,3H),7.39–7.32(m,4H),7.25–7.22(m,2H),1.42(s,9H)。13C NMR(101MHz,丙酮-d6)δ143.81,142.56,141.67,137.21,134.77,130.15,130.13,130.08,129.93,128.21,127.89,127.45,126.89,126.50,121.51,118.50,111.53,106.78,74.63,31.58,29.53。HRMS(ESI)精确质量计算[M+H]+C28H25NCl+,m/z:410.1670,实测值:410.1658。IR(KBr,cm-1)3393,2965,1595,1489,1323,752。M.P.158-159℃。
采用通用步骤A-1,使用1.2当量3,3-二甲基-1-丁炔,为白色固体(70%收率)。
1H NMR(400MHz,CDCl3)δ7.97(d,J=8.9Hz,1H),7.85(d,J=1.7Hz,1H),7.54(d,J=9.0Hz,2H),7.41(d,J=9.0Hz,1H),7.30(d,J=8.7Hz,2H),7.14(d,J=8.7Hz,2H),6.68(s,1H),1.45(s,9H)。13C NMR(100MHz,CDCl3)δ143.0,140.2,132.9,130.3,130.0,129.5,129.3,127.7,127.6,126.7,121.4,117.0,116.2,111.3,104.5,73.0,31.3,28.8。HRMS(ESI)精确质量计算[M+H]+C22H20NBrCl+,m/z:412.0462,实测值:412.0453。IR(KBr,cm-1)3385,2968,1589,1491,1360,1339,1312,820。M.P.165-166℃。
采用通用步骤A-2,为淡黄色固体(30%收率)。
1H NMR(400MHz,丙酮-d6)δ8.45(d,J=0.6Hz,1H),7.87–7.85(m,1H),7.80(dd,J=8.2,1.0Hz,2H),7.77(d,J=9.4Hz,1H),7.65(dd,J=8.4,1.7Hz,1H),7.52(t,J=7.7Hz,2H),7.45(d,J=9.0Hz,1H),7.40(t,J=7.4Hz,1H),7.34(s,1H),7.32(d,J=8.7Hz,2H),7.21(d,J=8.7Hz,2H),1.42(s,9H)。13C NMR(101MHz,丙酮-d6)δ143.99,142.49,142.10,140.54,135.87,130.09,130.01,129.89,129.45,128.95,128.52,128.07,126.90,124.06,123.54,121.58,121.48,118.06,111.92,107.04,74.72,31.59,29.54。HRMS(ESI)精确质量计算[M+H]+C28H25NCl+,m/z:410.1670,实测值:410.1661。IR(KBr,cm-1)3379,2965,1589,1514,1489,1339,1315,824。M.P.119-120℃。
采用通用步骤A-1,使用1.2当量3,3-二甲基-1-丁炔,为淡黄色固体(35%收率)。
1H NMR(400MHz,CDCl3)δ8.24(d,J=2.0Hz,1H),7.58(d,J=9.0Hz,1H),7.54(d,J=8.6Hz,1H),7.38(d,J=9.0Hz,1H),7.35(dd,J=8.6,2.0Hz,1H),7.32-7.28(m,2H),7.16-7.12(m,2H),6.70(s,1H),1.46(s,9H)。13C NMR(101MHz,CDCl3)δ143.63,140.20,135.77,129.83,129.64,128.68,127.94,127.27,126.90,126.71,121.91,121.73,115.54,111.57,103.52,73.10,31.49,28.99。HRMS(ESI)精确质量计算[M+H]+C22H20NBrCl+,m/z:412.0462,实测值:412.0462。IR(KBr,cm-1)3389,2968,1597,1499,1339,1298,820。M.P.88-90℃。
采用通用步骤A-1,为白色固体(39%收率)。
1H NMR(500MHz,CDCl3)δ7.61(d,J=8.8Hz,1H),7.57(d,J=8.9Hz,1H),7.47(d,J=2.3Hz,1H),7.28(d,J=8.7Hz,2H),7.25(d,J=6.5Hz,1H),7.14(d,J=8.7Hz,2H),6.97(dd,J=8.8,2.5Hz,1H),6.65(s,1H),3.95(s,3H),1.45(s,9H)。13C NMR(126MHz,CDCl3)δ159.10,143.11,140.79,136.10,129.83,129.52,128.59,127.28,123.79,121.25,115.95,113.09,111.04,103.83,73.84,55.22,31.61,28.97。HRMS(ESI)精确质量计算[M+H]+C23H23ONCl+,m/z:364.1463,实测值:364.1453。IR(KBr,cm-1)3389,2968,1624,1597,1516,1277,816。M.P.120-122℃。
采用通用步骤A-1,为白色固体(75%收率)。
1H NMR(500MHz,CDCl3)δ8.17(d,J=8.4Hz,1H),7.75(d,J=8.1Hz,1H),7.71(d,J=8.9Hz,1H),7.55–7.52(m,3H),7.50(d,J=8.9Hz,1H),7.39(t,J=7.5Hz,1H),7.11(d,J=8.5Hz,2H),6.88(s,1H),1.43(s,9H)。13C NMR(126MHz,CDCl3)δ146.79,139.88,134.22,133.85,129.54,128.74,128.24,127.48,125.48,124.83,119.79,117.77,116.48,111.75,108.90,102.91,73.35,31.35,28.88。HRMS(ESI)精确质量计算[M-H]-C23H19N2 -,m/z:323.1554,实测值:323.1551。IR(KBr,cm-1)3372,2974,2218,1597,1506,1319,1172,816。M.P.123-125℃。
采用通用步骤A-1,为白色固体(80%收率)。
1H NMR(500MHz,CDCl3)δ8.16(d,J=8.3Hz,1H),7.99(d,J=8.6Hz,2H),7.75(d,J=8.1Hz,1H),7.71(d,J=8.9Hz,1H),7.58(d,J=8.9Hz,1H),7.52(t,J=7.3Hz,1H),7.36(t,J=7.2Hz,1H),7.15(d,J=8.6Hz,2H),6.93(s,1H),3.89(s,3H),1.44(s,9H)。13C NMR(126MHz,CDCl3)δ166.98,146.85,140.90,134.33,131.58,129.16,128.69,128.24,127.37,125.34,124.39,122.51,117.26,116.38,111.48,107.46,73.49,51.96,31.45,28.93。HRMS(ESI)精确质量计算[M+H]+C24H24O2N+,m/z:358.1802,实测值:358.1794。IR(KBr,cm-1)3389,2968,1713,1607,1591,1348,1275,1175,1109,770。M.P.141-143℃。
采用通用步骤A-1,使用4当量3,3-二甲基-1-丁炔,为淡黄色固体(从6-溴-2-萘胺计算,80%收率)。
1H NMR(400MHz,丙酮-d6)δ8.08(d,J=8.6Hz,1H),7.83(s,1H),7.74(d,J=9.0Hz,1H),7.47(t,J=7.6Hz,2H),7.35–7.33(m,3H),7.23(d,J=8.7Hz,2H),1.40(s,9H),1.34(s,9H)。13C NMR(101MHz,丙酮-d6)δ144.29,142.26,134.58,132.13,130.84,130.16,129.49,129.30,127.20,125.82,121.88,120.13,118.39,111.72,106.57,99.00,80.35,74.39,31.54,31.50,29.52,28.78。HRMS(ESI)精确质量计算[M+H]+C28H29NCl+,m/z:410.1983,实测值:414.1972。IR(KBr,cm-1)3393,2965,1595,1485,1358,1306,827。M.P.165-167℃。
采用通用步骤A-1,使用4当量3,3-二甲基-1-丁炔,为白色固体(从7-溴-2-萘胺计算,74%收率)。
1H NMR(400MHz,丙酮-d6)δ8.17(s,1H),7.75(d,J=8.5Hz,2H),7.46(d,J=9.0Hz,1H),7.35–7.32(m,3H),7.29(dd,J=8.3,1.5Hz,1H),7.24–7.21(m,2H),1.42(s,9H),1.36(s,9H)。13C NMR(101MHz,丙酮-d6)δ144.34,142.34,135.23,130.15,129.57,129.32,128.81,128.71,127.34,127.12,123.76,121.81,118.29,111.92,106.15,99.90,80.77,74.47,31.52,31.43,29.55,28.83。HRMS(ESI)精确质量计算[M+H]+C28H29NCl+,m/z:410.1983,实测值:414.1973。IR(KBr,cm-1)3389,2965,1614,1597,1512,1341,818。M.P.132-133℃。
采用通用步骤A-1,用苯乙炔,为黄色固体(70%收率)。
1H NMR(400MHz,CDCl3)δ8.24(d,J=8.4Hz,1H),7.73(d,J=8.1Hz,1H),7.69(d,J=9.0Hz,1H),7.62(d,J=7.4Hz,2H),7.53(t,J=7.6Hz,1H),7.42–7.31(m,4H),7.34(t,J=7.5Hz,1H),7.29(d,J=8.4Hz,2H),7.16(d,J=8.4Hz,2H),6.78(s,1H),4.80(s,1H)。13CNMR(101MHz,CDCl3)δ143.55,140.37,134.48,131.63,129.84,129.59,128.65,128.63,128.44,128.37,127.81,127.61,125.01,123.90,123.30,121.77,115.69,103.81,101.14,84.10。HRMS(ESI)精确质量计算[M+H]+C24H17ClN+,m/z:354.1044,实测值:354.1050。IR(KBr,cm-1)3397,3055,2968,2191,1597,1504,1319,810,748,687。M.P.110-111℃。
采用通用步骤A-1,用3-氯苯乙炔,为黄色固体(74%收率)。
1H NMR(400MHz,丙酮)δ8.30(d,J=8.4Hz,1H),7.85(d,J=3.7Hz,2H),7.83(d,J=3.4Hz,1H),7.65(s,1H),7.60–7.56(m,2H),7.49(d,J=9.1Hz,1H),7.47–7.42(m,2H),7.39(t,J=7.8Hz,1H),7.35(d,J=8.9Hz,2H),7.29(d,J=8.9Hz,2H)。13C NMR(101MHz,丙酮)δ145.11,142.12,135.37,134.69,131.72,131.13,131.05,130.68,129.97,129.52,129.24,128.53,127.31,126.32,125.49,124.81,122.36,117.93,104.68,100.10,86.70。HRMS(ESI)精确质量计算[M+H]+C24H16Cl2N+,m/z:388.0654,实测值:388.0649。IR(KBr,cm-1)3402,3053,2201,1591,1503,1314,808,772。M.P.126-127℃。
采用通用步骤A-1,用4-溴苯乙炔,为黄色固体(56%收率)。
1H NMR(400MHz,丙酮)δ8.28(d,J=8.4Hz,1H),7.86(d,J=3.7Hz,1H),7.84(d,J=2.7Hz,1H),7.82(s,1H),7.62(d,J=8.6Hz,2H),7.60–7.56(m,3H),7.50(d,J=9.0Hz,1H),7.39(d,J=15.8Hz,1H),7.36–7.33(m,2H),7.31–7.28(m,2H)。13C NMR(101MHz,丙酮)δ144.92,142.19,135.33,133.98,132.58,130.98,129.98,129.56,129.24,128.48,127.23,125.48,124.82,123.60,122.84,122.25,117.95,105.00,100.51,86.54。HRMS(ESI)精确质量计算[M+H]+C24H16BrClN+,m/z:432.0149,实测值:432.0146。IR(KBr,cm-1)3397,3053,2191,1616,1591,1504,1487,1352,1325,824,804。M.P.126-128℃。
采用通用步骤A-1,用NIS代替TEBAICl2,为白色固体(20%收率)。
1H NMR(400MHz,CDCl3)δ7.29–7.25(m,2H),7.14–7.10(m,2H),6.51(s,1H),6.34(d,J=2.2Hz,1H),5.98(d,J=2.2Hz,1H),3.84(s,3H),3.73(s,3H),1.37(s,9H)。13C NMR(101MHz,CDCl3)δ161.84,160.92,146.37,140.51,129.50,127.30,121.62,108.57,93.22,91.36,90.27,71.46,56.06,55.44,31.55,28.79。HRMS(ESI)精确质量计算[M+H]+C20H23ClNO2 +,m/z:344.1412,实测值:344.1410。IR(KBr,cm-1)3375,2997,2967,1593,1495,1470,1252,1159,814。M.P.94-95℃。
采用通用步骤A-1,用3-甲基-1-丁炔代替3,3-二甲基-1-丁炔,为黄色固体(65%收率)。
1H NMR(400MHz,CDCl3)δ8.14(d,J=8.3Hz,1H),7.71(d,J=8.0Hz,1H),7.64(d,J=9.0Hz,1H),7.49(t,J=7.5Hz,1H),7.40(d,J=9.0Hz,1H),7.32(d,J=7.6Hz,1H),7.28(d,J=8.5Hz,2H),7.14(d,J=8.6Hz,2H),6.69(s,1H),3.00(dq,J=13.7,6.8Hz,1H),1.39(d,J=6.8Hz,6H)。13C NMR(101MHz,CDCl3)δ142.89,140.77,134.57,129.54,128.82,128.47,128.25,127.37,127.31,125.05,123.71,121.28,115.69,108.10,104.79,74.31,23.62,21.99。HRMS(ESI)精确质量计算[M+H]+C21H19ClN+,m/z:320.1201,实测值:320.1199。IR(KBr,cm-1)3391,3053,2967,1593,1495,1310,814,748。M.P.84-85℃。
采用通用步骤A-1,用2-戊炔酸代替3,3-二甲基-1-丁炔,为淡黄色固体(72%收率)。
1H NMR(400MHz,CDCl3)δ8.15(d,J=8.4Hz,1H),7.71(d,J=8.1Hz,1H),7.64(d,J=9.0Hz,1H),7.49(ddd,J=8.2,6.9,1.2Hz,1H),7.39(d,J=9.0Hz,1H),7.33–7.26(m,3H),7.16–7.12(m,2H),6.69(s,1H),2.65(q,J=7.5Hz,2H),1.37(t,J=7.5Hz,3H)。13C NMR(101MHz,CDCl3)δ143.05,140.77,134.68,129.53,128.82,128.48,128.25,127.45,127.31,125.07,123.71,121.46,115.74,104.88,103.75,74.53,14.61,13.94。HRMS(ESI)精确质量计算[M+H]+C20H17ClN+,m/z:306.1044,实测值:306.1041。IR(KBr,cm-1)3391,3059,2972,1593,1499,1310,1082,804,741。M.P.56-57℃。
通用步骤B:
向搅拌的2-萘胺C(20.0mmol)的MeOH(50mL)溶液中加入苯甲醛(1.72mL,30.0mmol),将反应混合物在室温下搅拌2小时,然后冷却至0℃,在1小时内分三批加入NaBH4(1.51g,40.0mmol)。混合物在室温下搅拌,通过TLC监测,反应完成后,将混合物缓慢加入到60mL饱和NaHCO3中,水层用2×40mL EA萃取,将合并的有机层用40mL H2O和50mL食盐水洗涤,用Na2SO4干燥并减压浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到化合物G。
通用步骤B-1
向搅拌的苄基三乙基氯化铵(2.51g,11.0mmol)的MeOH(20mL)溶液中加入ICl(1.79g,11.0mmol),溶液在室温下搅拌5分钟,得到TEBAICl2。将得到的混合物缓慢加入搅拌的G(10.0mmol)的DCM(20mL)溶液,20分钟后,将棕色混合物用20mL 0.2M Na2S2O3、40mL饱和NaHCO3溶液和食盐水洗涤,用Na2SO4干燥并减压浓缩,残留物H不经进一步纯化直接用于下一步骤。
在氩气保护下,向装有搅拌棒的100mL Schlenk管中加入粗产物H(10.0mmol),3,3-二甲基-1-丁炔(3.69mL,30mmol),Pd(PPh3)2Cl2(702mg,1.00mmol),CuI(381mg,2.00mmol)和40mL TEA。混合物在120℃下搅拌36至72小时,通过TLC监测,反应完成后,将得到的混合物用50mL EA和50mL H2O稀释,分离有机层并用40mL H2O和40mL食盐水洗涤,用Na2SO4干燥并减压浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到粗产物,通过PE重结晶得到目标化合物4。
通用步骤B-2
向搅拌的G(3.00mmol)的DMF(20mL)溶液中缓慢加入NBS(534mg,3.00mmol),将所得溶液在室温下搅拌0.5小时,然后用60mL H2O稀释,并用2×30mL EA萃取,将合并的有机层用4×30mL H2O和30mL食盐水洗涤,用Na2SO4干燥并减压浓缩,通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到化合物I。
在氩气保护下,向装有搅拌棒的100mL Schlenk管中加入化合物I(2.0mmol),3,3-二甲基-1-丁炔(1.23mL,10mmol),Pd(PPh3)2Cl2(140mg,0.20mmol),CuI(114mg,0.60mmol)和40mL哌啶。将混合物在120℃下搅拌36至72小时,通过TLC监测,反应完成后,将得到的混合物用30mL EA和30mL H2O稀释,分离有机层并用30mL H2O和30mL食盐水洗涤,用Na2SO4干燥并减压浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到粗产物,通过PE/EA重结晶得到目标化合物4。
采用通用步骤B-1,为白色固体(77%收率)。
1H NMR(400MHz,丙酮-d6)δ8.04(d,J=8.4Hz,1H),7.66(t,J=8.9Hz,2H),7.45–7.40(m,3H),7.34(t,J=7.5Hz,2H),7.25(t,J=7.3Hz,1H),7.20–7.16(m,1H),7.05(d,J=9.0Hz,1H),5.72(s,1H),4.62(d,J=5.8Hz,2H),1.42(s,9H)。13C NMR(101MHz,丙酮-d6)δ148.91,141.17,135.56,130.08,129.57,129.15,128.02,127.99,127.89,127.77,124.98,122.97,114.15,110.74,100.99,75.05,48.15,48.07,31.88,29.56。HRMS(ESI)精确质量计算[M+H]+C23H24N+,m/z:314.1903,实测值:314.1895。IR(KBr,cm-1)3408,2967,1618,1599,1497,1344,812,750,737。M.P.88-89℃。
采用通用步骤B-1,为黄色固体(75%收率)。
1H NMR(400MHz,丙酮-d6)δ7.94(d,J=8.5Hz,1H),7.56(d,J=9.0Hz,1H),7.44(d,J=5.3Hz,2H),7.41(s,1H),7.34(t,J=7.5Hz,2H),7.29–7.23(m,2H),7.01(d,J=9.0Hz,1H),5.63(t,J=5.2Hz,1H),4.60(d,J=6.0Hz,2H),2.39(s,3H),1.41(s,9H)。13C NMR(101MHz,丙酮-d6)δ148.35,141.28,133.75,132.12,130.00,129.55,129.43,128.15,128.04,127.97,125.01,114.19,110.51,101.07,75.19,48.27,31.89,29.54,21.41。HRMS(ESI)精确质量计算[M+H]+C24H26N+,m/z:328.2060,实测值:328.2051。IR(KBr,cm-1)3420,2967,1597,1503,1350,1312,818。M.P.104-107℃。
采用通用步骤B-1,用1.2当量3,3-二甲基-1-丁炔,为浅棕色固体(67%收率)。
1H NMR(400MHz,CDCl3)δ7.92(d,J=8.9Hz,1H),7.79(d,J=1.7Hz,1H),7.51-7.47(m,2H),7.40-7.34(m,4H),7.29(t,J=6.9Hz,1H),6.96(d,J=9.0Hz,1H),5.35(s,1H),4.56(s,2H),1.41(s,9H)。13C NMR(100MHz,CDCl3)δ147.6,139.1,132.9,130.0,129.9,128.7,128.1,127.7,127.3,126.9,126.1,115.4,113.6,110.6,100.4,73.4,47.8,31.4,28.7。HRMS(ESI)精确质量计算[M+H]+C23H23NBr+,m/z:392.1008,实测值:392.1000。IR(KBr,cm-1)3416,2970,1609,1593,1503,1344。M.P.120-122℃。
采用通用步骤B-2,为黄色固体(51%收率)。
1H NMR(400MHz,丙酮-d6)δ8.12(d,J=8.7Hz,1H),7.97(d,J=1.5Hz,1H),7.80–7.73(m,4H),7.48–7.42(m,4H),7.36–7.31(m,3H),7.25(t,J=7.2Hz,1H),7.08(d,J=9.0Hz,1H),5.80(t,J=5.8Hz,1H),4.63(d,J=6.0Hz,2H),1.43(s,9H)。13C NMR(100MHz,丙酮-d6)δ148.98,141.95,141.05,135.33,134.77,130.50,129.83,129.53,127.96,127.92,127.83,127.68,127.11,126.84,125.64,114.54,110.71,100.77,74.90,48.04,31.82,29.52。HRMS(ESI)精确质量计算[M+H]+C29H28N+,m/z:390.2216,实测值:390.2207。IR(KBr,cm-1)3391,3028,2962,2864,1589,1499,1300,752,696。M.P.92-93℃。
采用通用步骤B-1,在60℃反应,为浅黄色固体(86%收率)。
1H NMR(400MHz,CDCl3)δ8.17(d,J=1.9Hz,1H),7.55(d,J=9.0Hz,1H),7.49(d,J=8.6Hz,1H),7.40-7.33(m,4H),7.30-7.25(m,2H),6.94(d,J=9.0Hz,1H),5.36(t,J=5.9Hz,1H),4.56(d,J=5.7Hz,2H),1.41(s,9H)。13C NMR(101MHz,CDCl3)δ148.15,139.22,135.77,129.84,129.18,128.89,127.48,127.10,126.64,125.54,125.17,121.72,113.10,110.89,99.64,73.45,47.90,31.57,28.94。HRMS(ESI)精确质量计算[M+H]+C23H23NBr+,m/z:392.1008,实测值:392.1006。IR(KBr,cm-1)3412,3028,2967,2862,1614,1504,1341,824,741。M.P.93-95℃。
采用通用步骤B-2,为黄色固体(43%收率)。
1H NMR(400MHz,丙酮-d6)δ8.32(d,J=0.8Hz,1H),7.79–7.76(m,3H),7.68(d,J=9.0Hz,1H),7.53–7.49(m,3H),7.42(t,J=7.5Hz,2H),7.37(d,J=8.7Hz,1H),7.33(d,J=7.7Hz,2H),7.25(t,J=7.3Hz,1H),7.05(d,J=9.0Hz,1H),5.83(t,J=5.8Hz,1H),4.64(d,J=6.0Hz,2H),1.44(s,9H)。13C NMR(126MHz,丙酮-d6)δ149.11,142.44,141.11,140.26,135.83,129.94,129.82,129.76,129.51,128.33,128.01,127.91,126.91,122.75,122.29,114.23,111.12,101.14,74.97,47.97,31.81,29.55。HRMS(ESI)精确质量计算[M+H]+C29H28N+,m/z:390.2216,实测值:390.2206。IR(KBr,cm-1)3416,2965,1616,1603,1522,1501,1341,696。M.P.113-114℃。
实施例2
反应条件筛选:
手性磷酸C1可以顺利催化2a与2-萘酚的羟基化反应,得到ENOBIN(aS)-3a,产率为51%,ee为-14%,然后筛选各种手性磷酸催化剂,结果不够理想。转而使用酸性更强的N-三氟甲基磷酰胺,BINOL衍生的N-三氟甲基酰胺C13和SPINOL衍生的N-三氟甲基磷酰胺C14、C15获得了良好的对映选择性和产率,其中C14最佳催化剂。通过筛选溶剂、催化剂用量和温度,确定了最佳条件:使用催化剂C14(5mol%),2a与在1a(1.5eq)在PhCF3中于0℃反应36小时,以96%收率、98%ee得到ENOBIN(aS)-3a(E/Z>99:1)。催化剂的用量降低至1mol%,反应在室温下2小时内完成,对结果没有显着影响(94%收率,94%ee)。
用1a(0.15mmol),2a(0.10mmol)和催化剂(5mol%)在2.0mL溶剂中反应36小时。
b:分离收率;c:通过HPLC分析确定;d:1mol%催化剂,反应2h.;e:1a为0.3mmol,2a为0.2mmol。
经过反应条件筛选,得到了通用的合成步骤E:在0℃下,向化合物1(0.30mmol)和C14(8.0mg,0.010mmol)的PhCF3(4.0mL)溶液中加入化合物2(0.20mmol),在0℃下搅拌36小时后,通过硅胶柱色谱法纯化(PE/DCM/EA=N:5:1梯度洗脱),得到产物。
外消旋产物的合成:向2.0mL反应瓶中加入化合物2(0.02mmol),化合物1(0.03mmol),磷酸二苯酯(0.50mg,0.002mmol)和0.5mL DCM。反应混合物室温下搅拌并通过TLC监测,反应完成后,通过TLC制备硅胶板纯化得到外消旋体。
实施例3~35对底物的适用范围进行拓展,取代的2-萘酚、3,5-二甲氧基苯酚与2a顺利反应,以良好至高产率(70~99%产率)、优异的对映选择性(97~99%ee)得到相应的产物3a~3n。取代基的位置和电子性质对对映选择性没有影响,对产率的影响有限。N-苯胺基有CN或CO2Me取代并不影响结果。1,6-和1,7-双炔基2-萘胺的氢化芳基化选择性地、以良好的收率得到预期的产物3o和3w,而不形成6-和7-炔基的氢化芳基化的副产物,这表明邻氨基在炔烃活化中起到决定性作用。2-炔基苯胺以高产率和对映选择性得到产物3v,说明苯环也适合炔烃的活化。当炔烃中的叔丁基换成较小的Et、iPr或芳基时,反应顺利进行并得到轴手性产物3z~3ag,如果炔烃末端是芳基,需要使用手性磷酸C18。所有产物都显示出很好的E/Z选择性(>19:1)。
实施例3
根据通用步骤E,为白色泡沫状,96%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.89(s,1H),8.61(d,J=8.7Hz,1H),8.24(s,1H),7.74(dd,J=16.7,8.7Hz,3H),7.63(d,J=8.8Hz,1H),7.51(d,J=8.8Hz,1H),7.44(t,J=7.7Hz,2H),7.30–7.17(m,5H),7.09(d,J=8.8Hz,1H),6.98(s,2H),6.14(s,1H),1.01(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.15,151.70,143.54,140.35,135.79,134.95,130.54,130.51,129.94,129.91,129.68,129.07,128.89,127.18,126.57,126.25,125.66,124.94,123.99,123.53,119.27,118.92,36.50,30.04。HRMS(ESI)精确质量计算[M+H]+C32H29ClNO+,m/z:478.1932,实测值:478.1926。IR(KBr,cm-1)3520,3402,3053,2951,1701,1593,1491,1344,814,747。M.P.86-88℃。HPLC条件:HPLC DAICELCHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=230nm),tR(major)=13.2min,tR(minor)=15.4min,ee=98%。
实施例4
根据通用步骤E,为白色泡沫状,93%收率,97%ee。
1H NMR(400MHz,丙酮-d6)δ8.77(brs,1H),8.50(d,J=8.8Hz,1H),8.22(s,1H),7.72–7.68(m,2H),7.53–7.49(m,3H),7.29–7.16(m,5H),7.05(d,J=8.8Hz,1H),6.98(s,2H),6.12(s,1H),2.40(s,3H),1.00(s,9H)。13C NMR(100MHz,丙酮-d6)δ152.39,151.47,143.44,140.27,135.68,133.05,132.59,130.66,130.43,129.84,129.28,129.24,129.19,129.16,129.13,129.11,129.02,128.96,128.81,128.79,128.76,128.73,128.60,128.56,128.52,127.04,126.49,126.32,125.64,125.54,124.87,124.77,123.87,119.23,118.82,36.39,29.99,21.15。HRMS(ESI)精确质量计算[M+H]+C33H31ClNO+,m/z:492.2089,实测值:492.2084。IR(KBr,cm-1)3524,3397,3049,2951,1701,1593,1491,1341,818。M.P.90-92℃。HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=254nm),tR(major)=11.8min,tR(minor)=13.7min,ee=97%。
实施例5
根据通用步骤E,为白色泡沫状,72%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ9.04(brs,1H),8.70(d,J=9.0Hz,1H),8.28(d,J=8.2Hz,1H),8.04(d,J=2.2Hz,1H),7.80–7.70(m,6H),7.51(d,J=8.9Hz,1H),7.48–7.44(m,2H),7.35–7.16(m,5H),7.13(d,J=8.8Hz,1H),6.98(s,2H),6.18(s,1H),1.03(s,9H)。13C NMR(100MHz,丙酮-d6)δ153.22,151.61,143.35,141.40,140.19,135.62,134.03,130.62,130.38,130.21,129.76,129.69,128.95,128.78,128.77,127.86,127.60,127.10,127.08,126.50,126.27,126.24,126.09,124.76,123.86,119.23,119.09,36.37,29.93。HRMS(ESI)精确质量计算[M+H]+C38H33ClNO+,m/z:554.2245,实测值:554.2241。IR(KBr,cm-1)3530,3406,2957,1589,1495,814,758,696。M.P.106-108℃。HPLC条件:DAICELCHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=254nm),tR(major)=12.3min,tR(minor)=14.1min,ee=98%。
实施例6
根据通用步骤E,为白色泡沫状,86%收率,99%ee。
1H NMR(400MHz,丙酮-d6)δ9.09(brs,1H),8.53(d,J=9.2Hz,1H),8.17(s,1H),7.94(d,J=2.0Hz,1H),7.74–7.70(m,2H),7.59(d,J=8.8Hz,1H),7.52–7.48(m,2H),7.31–7.28(m,1H),7.25–7.21(m,1H),7.17–7.12(m,3H),6.95(s,2H),6.14(s,1H),1.01(s,9H)。13C NMR(100MHz,丙酮-d6)δ153.56,152.06,143.45,140.31,135.60,133.49,131.58,131.29,131.24,130.51,130.00,129.91,129.83,129.13,129.04,129.01,128.98,128.06,128.02,127.90,126.68,125.86,125.23,124.93,124.03,120.09,119.16,116.65,36.48,29.93。HRMS(ESI)精确质量计算[M+H]+C32H28BrClNO+,m/z:556.1037,实测值:556.1013。IR(KBr,cm-1)3524,3401,3053,2955,1690,1593,1491,1344,1337,818。M.P.102-104℃。HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=254nm),tR(major)=12.4min,tR(minor)=13.5min,ee=99%。
实施例7
根据通用步骤E,为白色泡沫状,74%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.68(s,1H),8.52(d,J=9.4Hz,1H),8.19(s,1H),7.71(t,J=7.8Hz,2H),7.52(t,J=9.4Hz,2H),7.28–7.17(m,5H),7.12(dd,J=9.4,2.7Hz,1H),7.05(d,J=8.8Hz,1H),6.99(s,2H),6.11(s,1H),3.85(s,3H),1.00(s,9H)。13C NMR(101MHz,丙酮-d6)δ156.24,151.46,151.36,143.45,140.26,135.65,131.47,130.43,130.01,129.85,128.99,128.78,128.54,127.17,126.52,126.43,125.19,124.80,123.87,119.40,119.22,119.16,107.84,55.52,36.38,29.97。HRMS(ESI)精确质量计算[M+H]+C33H31ClNO2 +,m/z:508.2038,实测值:508.2036。IR(KBr,cm-1)3049,2955,1593,1489,1233,814。M.P.93-95℃。 HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(minor)=22.2min,tR(major)=35.1min,ee=98%。
实施例8
根据通用步骤E,为白色泡沫状,93%收率,97%ee。
1H NMR(400MHz,丙酮-d6)δ8.83(s,1H),8.36(s,1H),8.33(s,1H),7.75(d,J=8.0Hz,1H),7.72(d,J=8.9Hz,1H),7.63(d,J=8.3Hz,1H),7.56(d,J=8.8Hz,1H),7.48(d,J=8.9Hz,1H),7.35(t,J=7.5Hz,1H),7.26(t,J=7.3Hz,1H),7.15(d,J=8.5Hz,2H),7.11(d,J=8.2Hz,1H),7.00(d,J=8.8Hz,1H),6.92(s,2H),6.13(s,1H),2.35(s,3H),1.01(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.29,151.60,143.65,140.18,136.57,135.93,135.11,130.58,129.86,129.62,129.48,129.08,128.87,128.71,127.61,126.48,126.12,125.61,125.01,124.91,124.26,124.04,119.57,119.14,118.02,36.57,30.09,22.15。HRMS(ESI)精确质量计算[M+H]+C33H31ClNO+,m/z:492.2089,实测值:492.2083。IR(KBr,cm-1)3049,2957,2859,1593,1491,1223,1341,818。M.P.70-73℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=10.2min,tR(minor)=14.9min,ee=97%。
实施例9
根据通用步骤E,为白色泡沫状,72%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ9.11(brs,1H),8.63(s,1H),8.47(d,J=8.2Hz,1H),7.82(d,J=7.5Hz,1H),7.77(d,J=8.4Hz,1H),7.73(d,J=8.8Hz,1H),7.60(d,J=8.7Hz,1H),7.52(dd,J=8.4,1.7Hz,1H),7.46(d,J=8.9Hz,1H),7.42–7.24(m,7H),7.12–7.08(m,3H),6.86(s,2H),6.23(s,1H),1.01(s,9H)。13C NMR(100MHz,丙酮-d6)δ153.51,152.08,143.43,141.94,140.03,139.40,135.82,134.96,130.45,130.08,129.66,129.54,129.49,129.38,129.18,128.88,128.06,127.98,127.14,125.32,125.04,124.87,124.02,123.79,122.81,119.65,119.09,118.88,36.50,30.00。HRMS(ESI)精确质量计算[M+H]+C38H33ClNO+,m/z:554.2245,实测值:554.2240。IR(KBr,cm-1)3526,3401,2957,1620,1593,1491,1304,814。M.P.96-98℃。 HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=254nm),tR(major)=10.7min,tR(minor)=11.7min,ee=98%。
实施例10
根据通用步骤E,为白色泡沫状,86%收率,99%ee。
1H NMR(400MHz,丙酮-d6)δ9.12(s,1H),8.76(d,J=1.9Hz,1H),8.22(d,J=7.9Hz,1H),7.76(d,J=8.0Hz,1H),7.73(d,J=8.9Hz,1H),7.67(d,J=8.7Hz,1H),7.61(d,J=8.8Hz,1H),7.47(d,J=8.9Hz,1H),7.38–7.33(m,2H),7.27(t,J=7.2Hz,1H),7.15–7.10(m,3H),6.91(s,2H),6.15(s,1H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ154.06,152.14,143.49,140.17,136.10,135.66,131.45,130.56,129.88,129.78,129.13,129.05,128.68,127.97,126.77,126.48,125.63,124.85,124.12,121.30,119.43,119.04,36.59,29.95。HRMS(ESI)精确质量计算[M+H]+C32H28BrClNO+,m/z:556.1037,实测值:556.1035。IR(KBr,cm-1)3053,2957,1589,1491,1300,814,748。M.P.91-94℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=11.3min,tR(minor)=18.0min,ee=99%。
实施例11
根据通用步骤E,为白色泡沫状,74%收率,99%ee。
1H NMR(400MHz,丙酮-d6)δ8.66(brs,1H),8.19(brs,1H),8.09(s,1H),7.71–7.69(m,2H),7.66(d,J=8.8Hz,1H),7.54–7.52(m,3H),7.19–7.03(m,6H),6.99(dd,J=8.7,2.3Hz,1H),6.86(d,J=8.7Hz,1H),6.10(s,1H),1.00(s,9)。13C NMR(100MHz,丙酮-d6)δ157.03,153.44,150.79,143.39,143.30,140.37,136.54,135.66,131.31,130.34,129.79,129.69,128.71,128.53,126.89,126.25,125.37,124.56,123.72,118.96,115.76,115.63,107.62,36.14,29.95。HRMS(ESI)精确质量计算[M+H]+C32H29ClNO2 +,m/z:494.1881,实测值:494.1875。IR(KBr,cm-1)3530,3401,3053,2961,1692,1618,1593,1491,1215,818。M.P.105-108℃。 HPLC条件:DAICEL CHIRALCEL OX-3,正己烷/异丙醇=95/5,流速=0.6mL/min,λ=254nm),tR(major)=15.7min,tR(minor)=20.7min,ee=99%。
实施例12
根据通用步骤E,为白色泡沫状,74%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.91(brs,1H),8.43(d,J=8.3Hz,1H),7.75(d,J=8.0Hz,1H),7.70–6.68(m,2H),7.59(d,J=8.9Hz,1H),7.50–7.45(m,2H),7.38(t,J=8.1Hz,1H),7.25(t,J=7.4Hz,1H),7.12(d,J=8.7Hz,2H),6.94(d,J=8.7Hz,1H),6.88–6.85(m,3H),6.18(s,1H),3.49(s,3H),1.01(s,9H)。13C NMR(100MHz,丙酮-d6)δ159.23,153.84,151.48,143.50,140.02,136.02,135.94,130.98,130.35,129.74,129.58,129.16,128.79,127.40,126.79,125.91,125.62,124.89,123.98,123.90,119.58,119.10,116.25,116.17,104.37,55.65,36.37,30.04。HRMS(ESI)精确质量计算[M+H]+C33H31ClNO2 +,m/z:508.2038,实测值:508.2033。IR(KBr,cm-1)2951,1620,1593,1514,1491,1223,814。M.P.91-94℃。 HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=254nm),tR(major)=13.0min,tR(minor)=16.1min,ee=98%。
实施例13
根据通用步骤E,为白色泡沫状,98%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ9.24(s,1H),8.85(d,J=8.7Hz,1H),8.60(dd,J=9.3,1.6Hz,1H),8.23(s,1H),7.90(d,J=7.0Hz,1H),7.76–7.72(m,2H),7.50–7.43(m,2H),7.34–7.30(m,1H),7.27–7.24(m,1H),7.21(dd,J=9.3,1.4Hz,1H),7.17–7.15(m,2H),6.96(s,2H),6.14(s,1H),3.92(s,3H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ168.77,153.30,152.48,143.51,140.40,135.73,135.57,130.70,130.59,129.87,129.19,129.15,129.08,127.80,127.41,127.35,126.70,125.93,125.71,125.50,125.03,124.08,120.29,119.29,52.47,36.59,29.96。HRMS(ESI)精确质量计算[M+H]+C34H31ClNO3 +,m/z:536.1987,实测值:536.1979。IR(KBr,cm-1)3395,3358,2951,1717,1593,1491,1258,818。M.P.95-98℃。 HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(minor)=19.8min,tR(major)=26.6min,ee=98%。
实施例14
根据通用步骤E,为白色泡沫状,99%收率,97%ee。
1H NMR(400MHz,丙酮-d6)δ8.58(d,J=8.7Hz,1H),8.15(s,1H),8.06(s,1H),7.74(d,J=8.8Hz,2H),7.70(d,J=8.0Hz,1H),7.51(s,1H),7.48–7.41(m,3H),7.30–7.23(m,4H),7.06(s,2H),6.16(s,1H),2.27(s,3H),1.03(s,9H)。13C NMR(101MHz,丙酮-d6)δ152.08,143.03,140.44,135.52,133.61,130.69,129.91,129.79,129.20,129.18,128.95,127.60,126.87,126.58,126.27,125.57,124.25,123.71,120.19,118.84,36.50,30.04,17.55。HRMS(ESI)精确质量计算[M+H]+C33H31ClNO+,m/z:492.2089,实测值:492.2083。IR(KBr,cm-1)3526,3402,3053,2955,1697,1593,1495,1341,818,752。M.P.94-96℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(minor)=5.8min,tR(major)=6.5min,ee=97%。
实施例15
根据通用步骤E,为白色泡沫状,88%收率,99%ee。
1H NMR(400MHz,丙酮-d6)δ8.59(d,J=8.7Hz,1H),8.30(s,1H),7.79–7.71(m,3H),7.59(s,1H),7.44(t,J=7.5Hz,2H),7.38–7.24(m,8H),7.15(s,1H),6.95(s,2H),6.23(s,1H),1.03(s,9H)。13C NMR(101MHz,丙酮-d6)δ152.37,150.32,143.42,140.61,138.87,135.71,134.36,132.47,130.82,130.62,130.60,130.42,129.91,129.81,129.42,129.33,128.51,127.15,126.94,126.49,125.86,125.42,124.36,124.18,120.03,119.42,36.64,30.09。HRMS(ESI)精确质量计算[M+H]+C38H33ClNO+,m/z:554.2245,实测值:554.2241。IR(KBr,cm-1)3526,3406,3053,2957,1593,1495,1254,818,749。M.P.102-104℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(minor)=5.5min,tR(major)=6.1min,ee=99%。
实施例16
根据通用步骤E,为白色泡沫状,70%收率,92%ee。
1H NMR(400MHz,丙酮-d6)δ8.57(s,1H),8.38(d,J=8.5Hz,1H),7.69(t,J=9.3Hz,2H),7.48(d,J=8.9Hz,1H),7.37(t,J=7.3Hz,1H),7.31(s,1H),7.24(t,J=7.6Hz,1H),7.20(d,J=8.8Hz,2H),7.05(d,J=8.8Hz,2H),6.08(d,J=2.3Hz,1H),6.00(d,J=2.3Hz,1H),5.96(s,1H),3.65(s,3H),3.49(s,3H),0.86(s,9H)。13C NMR(101MHz,丙酮-d6)δ160.91,160.31,156.68,149.99,143.81,139.24,135.79,130.16,129.90,128.64,128.41,128.32,126.19,125.76,124.92,123.68,123.54,119.46,119.41,118.60,114.44,95.03,91.57,55.64,55.46,35.83,30.10。HRMS(ESI)精确质量计算[M+H]+C30H31ClNO3 +,m/z:488.1987,实测值:488.1982。IR(KBr,cm-1)3499,3397,3358,3049,2955,1618,1593,1495,1150,1098,818。M.P.72-74℃。HPLC条件:DAICELCHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.5mL/min,λ=254nm),tR(major)=10.4min,tR(minor)=17.4min,ee=92%。
实施例17
根据通用步骤E,为白色泡沫状,85%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.96(s,1H),8.53(d,J=8.7Hz,1H),8.21(s,1H),7.77(d,J=1.7Hz,1H),7.74(d,J=8.2Hz,1H),7.67(d,J=8.9Hz,1H),7.62(d,J=8.8Hz,1H),7.49(d,J=8.9Hz,1H),7.43(ddd,J=8.5,6.7,1.4Hz,1H),7.26(ddd,J=8.0,6.7,1.1Hz,2H),7.17(d,J=8.3Hz,2H),7.10(d,J=8.8Hz,1H),6.95(s,2H),6.14(s,1H),1.31(s,9H),1.00(s,9H)。13C NMR(101MHz,丙酮-d6)δ152.23,150.97,142.22,139.95,133.91,130.95,129.48,129.04,129.02,128.96,128.72,128.33,127.70,126.29,124.92,124.51,124.33,123.66,122.59,118.60,118.33,117.93,97.82,79.52,35.52,30.56,29.08,27.75。HRMS(ESI)精确质量计算[M+H]+C38H37ClNO+,m/z:558.2558,实测值:558.2555。IR(KBr,cm-1)3401,3055,2960,2864,1589,1491,1360,810。M.P.115-117℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=9.0min,tR(minor)=15.0min,ee=98%。
实施例18
根据通用步骤E,为白色泡沫状,82%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.95(s,1H),8.60(d,J=8.7Hz,1H),8.14(s,1H),7.74(d,J=7.5Hz,1H),7.61(d,J=9.0Hz,2H),7.49–7.41(m,3H),7.27(ddd,J=7.9,6.8,1.0Hz,1H),7.15(d,J=8.2Hz,2H),7.12–7.07(m,2H),6.94(s,2H),6.12(s,1H),2.36(s,3H),1.00(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.07,151.44,143.66,139.42,134.87,133.92,133.23,130.77,130.42,129.80,129.57,128.68,128.17,128.00,127.06,126.32,125.61,124.88,124.60,123.42,119.46,118.87,36.40,30.04,21.28。HRMS(ESI)精确质量计算[M+H]+C33H31ClNO+,m/z:492.2089,实测值:492.2085。IR(KBr,cm-1)3526,3410,3055,2957,1593,1491,1346,1304,824。M.P.94-96℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=12.3min,tR(minor)=15.6min,ee=98%。
实施例19
根据通用步骤E,为白色泡沫状,91%收率,96%ee。
1H NMR(400MHz,丙酮-d6)δ8.96(s,1H),8.66(d,J=8.7Hz,1H),8.32(s,1H),8.01(d,J=1.7Hz,1H),7.77(t,J=8.3Hz,2H),7.70(d,J=7.6Hz,2H),7.63(d,J=8.8Hz,1H),7.59(d,J=8.2Hz,1H),7.53(d,J=8.8Hz,1H),7.50–7.46(m,1H),7.41(t,J=7.6Hz,2H),7.29(td,J=7.3,2.0Hz,2H),7.18(d,J=7.7Hz,2H),7.11(d,J=8.8Hz,1H),6.99(s,2H),6.16(s,1H),1.04(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.14,151.72,143.34,141.58,140.48,136.12,134.94,134.90,130.72,130.46,129.93,129.89,129.72,129.67,129.28,127.88,127.64,127.23,126.62,126.18,125.72,125.55,125.02,124.80,123.50,119.34,118.88,36.46,30.05。HRMS(ESI)精确质量计算[M+H]+C38H33ClNO+,m/z:554.2245,实测值:554.2243。IR(KBr,cm-1)3530,3401,3059,2955,1690,1589,1491,1304,814,752。M.P.115-116℃。 HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=17.3min,tR(minor)=28.6min,ee=96%。
实施例20
根据通用步骤E,为白色泡沫状,99%收率,96%ee。
1H NMR(400MHz,丙酮-d6)δ8.98(s,1H),8.56(d,J=8.7Hz,1H),8.17(s,1H),7.92(d,J=2.1Hz,1H),7.76(d,J=7.9Hz,1H),7.67(d,J=9.0Hz,1H),7.64(d,J=8.8Hz,1H),7.53(d,J=8.8Hz,1H),7.47(ddd,J=8.5,6.8,1.3Hz,1H),7.35(d,J=8.1Hz,1H),7.30–7.26(m,1H),7.18(d,J=7.4Hz,2H),7.10(d,J=8.8Hz,1H),6.96(s,2H),6.14(s,1H),1.00(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.15,151.89,142.99,140.82,134.72,134.25,131.43,130.68,130.35,130.01,129.85,129.67,129.31,127.97,127.32,125.68,125.25,125.16,124.32,123.47,119.44,118.78,117.01,36.37,29.92。HRMS(ESI)精确质量计算[M+H]+C32H28BrClNO+,m/z:556.1037,实测值:556.1033。IR(KBr,cm-1)3541,3055,2957,1701,1491,1344,818。M.P.105-107℃。HPLC条件:DAICELCHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=13.5min,tR(minor)=21.8min,ee=96%。
实施例21
根据通用步骤E,为白色泡沫状,91%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.98(s,1H),8.81(d,J=8.0Hz,1H),8.29(s,1H),7.84(d,J=8.0Hz,1H),7.76–7.67(m,3H),7.57–7.47(m,4H),7.41–7.37(m,1H),7.28–7.22(m,5H),7.18–7.01(m,5H),6.18(s,1H),1.03(s,9H)。13C NMR(101MHz,丙酮-d6)δ152.23,150.74,142.42,140.82,140.34,138.07,134.84,134.05,129.69,129.15,129.13,128.95,128.79,128.75,128.61,127.68,127.17,127.07,126.98,125.62,124.74,124.34,124.12,123.57,122.61,122.17,118.62,118.00,117.59,35.60,29.18。HRMS(ESI)精确质量计算[M+H]+C38H33ClNO+,m/z:554.2245,实测值:554.2238。IR(KBr,cm-1)3530,3055,2955,1686,1589,1489,1341,820,756。M.P.107-110℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=13.9min,tR(minor)=30.5min,ee=98%。
实施例22
根据通用步骤E,为白色泡沫状,93%收率,97%ee。
1H NMR(400MHz,丙酮-d6)δ8.97(s,1H),8.58(d,J=8.7Hz,1H),8.47(s,1H),7.77(d,J=7.9Hz,1H),7.69(d,J=8.9Hz,1H),7.66(dd,J=8.6,1.2Hz,2H),7.53–7.48(m,2H),7.32–7.28(m,2H),7.21–7.15(m,2H),7.12(d,J=8.8Hz,1H),6.96(s,2H),6.15(s,1H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.22,151.92,142.93,141.33,137.02,134.76,130.84,130.41,130.12,129.88,129.72,128.83,128.60,127.46,126.76,125.77,125.42,125.09,124.21,123.55,120.57,119.61,118.78,36.41,29.96。HRMS(ESI)精确质量计算[M-H]- 32H26BrClNO-,m/z:554.0892,实测值:554.0886。IR(KBr,cm-1)3397,3053,2957,1690,1597,1491,1341,820。M.P.96-98℃。HPLC条件:DAICELCHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=11.7min,tR(minor)=14.5min,ee=97%。
实施例23
根据通用步骤E,为白色泡沫状,83%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.94(brs,1H),8.81(brs,1H),7.80(d,J=8.1Hz,1H),7.67–7.57(m,3H),7.54–7.51(m,1H),7.50–7.23(m,6H),7.12–7.10(m,3H),6.80(dd,J=8.9,2.4Hz,1H),6.15(s,1H),3.35(s,3H),1.05(s,9H)。13C NMR(101MHz,丙酮-d6)δ157.91,152.20,150.72,142.47,140.33,135.83,134.15,129.56,129.53,129.08,129.00,128.91,127.68,126.49,125.67,124.85,124.78,124.05,123.82,122.50,118.68,118.09,115.65,114.93,104.35,54.93,35.63,29.15。HRMS(ESI)精确质量计算[M-H]-C33H29ClNO2 -,m/z:506.1892,实测值:506.1886。IR(KBr,cm-1)3055,2955,1686,1620,1593,1514,1491,1217,814。M.P.89-92℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=254nm),tR(major)=13.5min,tR(minor)=16.9min,ee=98%。
实施例24
根据通用步骤E,在-10℃下反应12小时,为白色泡沫状,93%收率,92%ee。
1H NMR(600MHz,DMSO,50℃)δ9.96(brs,1H),8.43(d,J=8.7Hz,1H),7.77(brs,1H),7.69(d,J=8.0Hz,1H),7.60(d,J=8.7Hz,1H),7.38(t,J=7.5Hz,1H),7.26–7.24(m,1H),7.22(d,J=7.2Hz,1H),7.08(d,J=8.7Hz,1H),7.02(s,2H),6.38(d,J=1.6Hz,1H),6.07(s,1H),5.62(s,1H),3.67(s,3H),3.48(s,3H),0.98(s,9H)。13C NMR(151MHz,DMSO,50℃)δ160.12,159.68,151.46,148.45,143.35,142.58,134.66,129.52,129.06,128.34,127.91,126.65,125.28,125.13,124.19,123.52,122.60,119.00,118.07,112.00,93.98,91.52,55.40,55.24,35.21,29.89。HRMS(ESI)精确质量计算[M+H]+C30H31ClNO3 +,m/z:488.1987,实测值:488.1983。IR(KBr,cm-1)3410,2955,1584,1491,1088,818。M.P.73-76℃。 HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=90/10,流速=0.5mL/min,λ=254nm),tR(minor)=11.3min,tR(major)=12.5min,ee=98%。
实施例25
根据通用步骤E,为白色泡沫状,87%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ8.94(s,1H),8.67(d,J=8.7Hz,1H),8.26(s,1H),7.79(d,J=8.0Hz,1H),7.68–7.62(m,3H),7.57–7.53(m,1H),7.50(d,J=8.6Hz,1H),7.32(t,J=7.4Hz,1H),7.19(s,2H),7.12(d,J=8.3Hz,1H),7.09(d,J=8.8Hz,1H),7.01(s,2H),6.12(s,1H),1.23(s,9H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.01,151.57,143.23,140.96,135.28,134.82,130.51,130.00,129.90,129.65,129.29,128.89,128.58,127.39,126.18,125.44,124.97,124.78,123.45,122.09,119.29,118.69,98.71,80.58,36.40,31.37,29.94,28.52。HRMS(ESI)精确质量计算[M+H]+C38H37ClNO+,m/z:558.2558,实测值:558.2554。IR(KBr,cm-1)3536,3401,3055,2903,2862,1593,1510,1491,1337,1285,841,818。M.P.76-79℃。 HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,流速=0.5mL/min,λ=254nm),tR(major)=11.2min,tR(minor)=12.4min,ee=98%。
实施例26
根据通用步骤E,为白色泡沫状,91%收率,96%ee。
1H NMR(400MHz,丙酮-d6)δ9.12(s,1H),8.63(d,J=8.7Hz,1H),8.29(s,1H),7.79–7.72(m,3H),7.61–7.56(m,2H),7.50–7.43(m,3H),7.30–7.26(m,3H),7.07(m,3H),6.12(s,1H),0.96(s,9H)。13C NMR(101MHz,丙酮-d6)δ152.84,151.21,148.79,138.01,135.54,134.66,134.05,131.29,130.29,129.78,129.44,128.85,128.76,127.08,126.47,125.95,125.40,124.78,124.52,123.32,120.32,118.53,115.45,101.05,36.24,29.85。HRMS(ESI)精确质量计算[M+H]+C33H29N2O+,m/z:469.2274,实测值:469.2270。IR(KBr,cm-1)3391,3055,2955,2216,1717,1593,1510,1341,818。M.P.117-119℃。HPLC条件:DAICEL CHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=240nm),tR(minor)=16.7min,tR(major)=20.8min,ee=96%。
实施例27
根据通用步骤E,为白色泡沫状,93%收率,98%ee。
1H NMR(400MHz,丙酮-d6)δ9.15(s,1H),8.65(d,J=8.7Hz,1H),8.26(s,1H),7.83–7.75(m,5H),7.62(d,J=8.8Hz,1H),7.49(ddd,J=8.5,6.8,1.3Hz,1H),7.31–7.26(m,3H),7.10(d,J=8.8Hz,1H),7.00(s,2H),6.13(s,1H),3.79(s,3H),0.96(s,9H)。13C NMR(101MHz,丙酮-d6)δ166.97,152.86,151.28,148.94,138.77,135.50,134.67,131.86,130.95,130.32,129.78,129.49,128.85,128.64,127.06,126.41,126.01,125.41,124.62,124.39,123.34,120.95,120.38,118.59,114.96,51.64,36.25,29.85。HRMS(ESI)精确质量计算[M+H]+C34H32NO3 +,m/z:502.2377,实测值:502.2374。IR(KBr,cm-1)3395,3053,2951,1710,1686,1593,1510,1279,1175,814,746。M.P.112-115℃。HPLC条件:DAICELCHIRALPAK AD-3,正己烷/异丙醇=90/10,流速=0.7mL/min,λ=240nm),tR(minor)=15.7min,tR(major)=23.8min,ee=98%。
实施例28
根据通用步骤E,在0℃反应12h,为白色泡沫状,95%收率,95%ee。
1H NMR(400MHz,丙酮)δ8.94(s,1H),8.48(d,J=8.7Hz,1H),8.17–8.14(m,1H),7.78–7.73(m,3H),7.64(d,J=8.8Hz,1H),7.53(d,J=8.9Hz,1H),7.42–7.38(m,1H),7.29–7.23(m,3H),7.18–7.11(m,4H),6.92(d,J=8.7Hz,2H),6.08(d,J=10.2Hz,1H),2.51–2.39(m,1H),1.03(d,J=6.6Hz,3H),0.88(d,J=6.6Hz,3H)。13C NMR(101MHz,丙酮)δ152.89,149.23,143.95,139.38,134.63,134.51,130.93,130.29,129.74,129.51,129.13,128.70,128.13,127.16,126.66,126.29,126.14,125.33,124.45,124.12,123.50,120.59,118.69,118.43,29.92,22.66。HRMS(ESI)精确质量计算[M+H]+C31H27N3O4 +,m/z:464.1776,实测值:464.1774。IR(KBr,cm-1)3524,3402,3053,2957,1593,1491,818。M.P.71-74℃。 HPLC条件:DAICEL CHIRALCEL OD-3,正己烷/异丙醇=95/5,流速=0.5mL/min,λ=254nm),tR(minor)=16.3min,tR(major)=19.0min,ee=95%。
实施例29
根据通用步骤E,在0℃反应12h,为白色泡沫状,96%收率,94%ee。
1H NMR(400MHz,丙酮)δ8.82(s,1H),8.39(d,J=8.6Hz,1H),8.12(d,J=8.7Hz,1H),7.79–7.76(m,2H),7.74(dd,J=8.2,3.3Hz,2H),7.61(d,J=8.8Hz,1H),7.51(d,J=8.9Hz,1H),7.37–7.32(m,1H),7.30–7.22(m,3H),7.13–7.09(m,4H),6.88(d,J=8.7Hz,2H),6.25(t,J=7.3Hz,1H),2.18–1.99(m,2H),0.98(t,J=7.5Hz,3H)。13C NMR(151MHz,丙酮)δ152.87,143.97,139.58,134.57,134.50,131.00,130.28,129.80,129.71,129.46,129.22,128.92,127.11,126.80,126.51,126.21,125.47,124.64,124.19,123.70,123.51,120.76,118.80,118.66,24.14,13.90。HRMS(ESI)精确质量计算[M+H]+C30H25ClNO+,m/z:450.1619,实测值:450.1616。IR(KBr,cm-1)3431,2930,1620,1491,820。M.P.62-64℃。 HPLC条件:DAICEL CHIRALPAK IA,正己烷/异丙醇=95/5,流速=0.5mL/min,λ=254nm),tR(minor)=21.1min,tR(major)=23.1min,ee=94%。
实施例30
根据通用步骤E,在甲苯中用C18为催化剂反应72h,为黄色固体,90%收率,96%ee。
1H NMR(400MHz,丙酮)δ8.61(s,1H),8.21–8.19(m,1H),7.71(dd,J=7.4,1.9Hz,1H),7.71(d,J=9.0Hz,1H),7.42(d,J=8.9Hz,1H),7.26–7.18(m,2H),7.06–7.02(m,2H),7.00(s,1H),6.99(s,1H),6.97–6.89(m,5H),6.77–6.73(m,2H),6.14(d,J=2.3Hz,1H),6.04(d,J=2.3Hz,1H),3.65(s,3H),3.48(s,3H)。13C NMR(101MHz,丙酮)δ161.25,160.16,156.70,143.78,138.83,138.06,138.00,134.18,130.65,130.09,129.43,129.21,128.69,128.62,128.50,127.68,126.99,126.32,126.16,124.52,123.98,120.03,118.96,113.46,94.94,91.54,55.75,55.38。HRMS(ESI)精确质量计算[M+H]+C32H27ClNO3 +,m/z:508.1674,实测值:508.1669。IR(KBr,cm-1)3401,3053,2930,2837,1618,1593,1491,1153,1093,814。M.P.70-73℃。-271.5°(c=0.4,CHCl3)。HPLC条件:HPLC DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,0.5mL/min,λ=230nm,tR(major)=9.03min,tR(minor)=12.77min,ee=96%。
实施例31
根据通用步骤E,在甲苯中用C18为催化剂反应72h,为黄色固体,91%收率,95%ee。
1H NMR(400MHz,丙酮)δ8.70(s,1H),8.19–8.16(m,1H),7.75(d,J=8.3Hz,2H),7.45(d,J=8.9Hz,1H),7.29–7.22(m,2H),7.07–7.03(m,2H),6.98(s,1H),6.97–6.94(m,2H),6.91–6.87(m,2H),6.83–6.81(m,1H),6.77–6.73(m,2H),6.16(d,J=2.3Hz,1H),6.07(d,J=2.3Hz,1H),3.68(s,3H),3.53(s,3H)。13C NMR(101MHz,丙酮)δ161.46,160.14,156.71,143.82,140.18,138.83,136.36,134.14,133.98,132.04,130.76,130.01,129.44,128.90,128.72,127.64,127.44,126.70,126.54,125.86,124.49,124.16,120.41,118.56,118.50,113.16,95.01,91.59,55.83,55.42。HRMS(ESI)精确质量计算[M+H]+C32H26Cl2NO3 +,m/z:542.1284,实测值:542.1278。IR(KBr,cm-1)3502,2930,2837,1614,1593,1491,1207,1098,818。M.P.89-91℃。HPLC条件:HPLC DAICELCHIRALPAK IA,正己烷/异丙醇=80/20,1.0mL/min,λ=254nm,tR(major)=7.83min,tR(minor)=11.46min,ee=95%。
实施例32
根据通用步骤E,在甲苯中用C18为催化剂反应72h,为黄色固体,96%收率,95%ee。
1H NMR(400MHz,丙酮)δ8.67(s,1H),8.18–8.16(m,1H),7.77–7.71(m,2H),7.42(d,J=8.9Hz,1H),7.29–7.22(m,2H),7.07–7.03(m,4H),6.94(s,2H),6.79(d,J=8.4Hz,2H),6.74–6.71(m,2H),6.15(d,J=2.3Hz,1H),6.06(d,J=2.3Hz,1H),3.68(s,3H),3.52(s,3H)。
13C NMR(101MHz,丙酮)δ161.41,160.12,156.68,143.87,138.74,137.35,136.61,134.19,131.50,131.38,130.99,130.76,129.43,128.83,128.73,126.75,126.53,126.00,124.40,124.17,121.06,120.53,118.48,113.26,94.99,91.58,55.83,55.42。HRMS(ESI)精确质量计算[M+H]+C32H26BrClNO3 +,m/z:586.0779,实测值:586.0779。IR(KBr,cm-1)3397,2363,1618,1593,1491,1201,1153,814。M.P.98-100℃。HPLC条件:HPLC DAICEL CHIRALPAK IA,正己烷/异丙醇=80/20,1.0mL/min,λ=254nm,tR(major)=9.41min,tR(minor)=14.32min,ee=95%。
实施例33
根据通用步骤E,在甲苯中用C18为催化剂反应72h,为黄色固体,74%收率,91%ee。
1H NMR(400MHz,CD2Cl2)δ8.54(s,1H),8.13(s,1H),7.84(d,J=8.5Hz,1H),7.81(d,J=8.3Hz,1H),7.77(d,J=9.0Hz,1H),7.69(d,J=8.8Hz,1H),7.60(d,J=8.2Hz,1H),7.40(s,1H),7.39(d,J=10.3Hz,2H),7.35–7.06(m,15H),6.59(s,2H),6.18(s,1H)。13C NMR(101MHz,CD2Cl2)δ152.83,141.69,141.51,140.52,139.89,139.12,136.42,133.75,133.41,131.89,130.97,130.29,130.14,129.78,129.66,129.31,129.27,129.20,129.13,129.03,129.01,127.86,127.81,127.75,127.50,125.47,124.61,123.39,123.14,123.02,121.41,119.31,118.77。HRMS(ESI)精确质量计算[M+H]+C40H29ClNO+,m/z:574.1932,实测值:574.1929。IR(KBr,cm-1)3395,3358,3055,1593,1487,1306,818。M.P.153-155℃。HPLC条件:HPLC DAICEL CHIRALPAK IB,正己烷/异丙醇=95/05,0.5mL/min,λ=254nm,tR(major)=27.53min,tR(minor)=34.06min,ee=91%。
实施例34
根据通用步骤E,在甲苯中用C18为催化剂反应72h,为黄色固体,66%收率,90%ee。
1H NMR(400MHz,CD2Cl2)δ8.46(s,1H),8.09(d,J=8.2Hz,1H),7.84(d,J=8.4Hz,1H),7.83(d,J=8.1Hz,1H),7.80(d,J=9.0Hz,1H),7.69(d,J=8.8Hz,1H),7.60(dd,J=8.4,1.5Hz,1H),7.36–7.25(m,9H),7.14–6.98(m,7H),6.90–6.69(m,1H),6.59(d,J=7.4Hz,2H),6.22(s,1H)。13C NMR(101MHz,CD2Cl2)δ152.62,141.68,141.52,139.97,139.25,138.79,138.39,134.64,133.71,133.41,130.94,130.47,130.35,130.21,129.81,129.62,129.34,129.30,129.24,129.10,128.68,127.93,127.85,127.81,127.22,127.12,125.24,124.70,123.48,122.90,122.85,120.63,119.84,118.68。HRMS(ESI)精确质量计算[M+H]+C40H28Cl2NO+,m/z:608.1542,实测值:608.1539。IR(KBr,cm-1)3399,3360,3061,1593,1310,816,750。M.P.155-158℃。HPLC条件:HPLC DAICELCHIRALPAK AD3,正己烷/异丙醇=90/10,1.0mL/min,λ=254nm,tR(minor)=13.99min,tR(major)=20.49min,ee=90%。
实施例35
根据通用步骤E,在甲苯中用C18为催化剂反应72h,为黄色固体,70%收率,91%ee。
1H NMR(400MHz,CD2Cl2)δ8.46(s,1H),8.09(d,J=8.0Hz,1H),7.83(d,J=8.5Hz,1H),7.82(d,J=8.5Hz,1H),7.78(d,J=8.9Hz,1H),7.68(d,J=8.8Hz,1H),7.59(dd,J=8.4,1.4Hz,1H),7.36–7.25(m,9H),7.23(d,J=8.5Hz,2H),7.09(d,J=8.2Hz,2H),7.04(d,J=8.7Hz,1H),6.99(d,J=8.5Hz,2H),6.91–6.77(m,1H),6.58(d,J=5.3Hz,2H),6.22(s,1H)。13C NMR(101MHz,CD2Cl2)δ152.60,141.66,141.52,139.91,139.16,139.07,135.51,133.73,133.08,132.63,132.08,130.97,130.71,130.43,130.28,129.80,129.61,129.36,129.30,129.23,127.93,127.84,127.80,127.12,125.29,124.71,123.44,122.97,122.72,120.65,119.84,118.67。HRMS(ESI)精确质量计算[M+H]+C40H28BrClNO+,m/z:652.1037,实测值:608.1033。IR(KBr,cm-1)3551,3526,3360,3051,1618,1501,1487,1312,818。M.P.168-169℃。 HPLC条件:HPLC DAICEL CHIRALPAK AD3,正己烷/异丙醇=90/10,1.0mL/min,λ=254nm,tR(minor)=16.98min,tR(major)=27.36min,ee=91%。
实施例36
反应条件筛选:
使用4a为底物,反应进行得非常缓慢,只能检测到痕量的产物5a,将温度升至室温,得到所需产物5a,产率为23%,ee为44%。在DCM中筛选各种手性磷酸和N-三氟甲基磷酰胺都没有得到理想的结果。筛选溶剂后发现,C4和CCl4是最佳组合,产率为76%,ee为-83%。进一步筛选磷酸,发现C16、C17可以大幅提高对映选择性。在CCl4中,SPINOL衍生的手性磷酸C17获得90%ee。通过优化温度、催化剂用量和反应时间,确定了最佳反应条件:使用5mol%催化剂C17,1a(1.5当量)和4a时在CCl4中、10℃下反应72小时,获得ENOBIN(aS)-5a(E/Z>19:1),产率为83%,ee为92%。
用1a(0.15mmol),4a(0.10mmol)和催化剂(5mol%)在2.0mL溶剂中反应。
b:分离收率;c:通过HPLC分析确定;d:10mol%催化剂,反应2h.;e:在氩气保护、无光照条件;f:1a为0.3mmol,2a为0.2mmol。
经过反应条件筛选,得到了通用的合成步骤G:
向装有搅拌棒的10mL Schlenk管中加入化合物1(0.30mmol),C17(8.2mg,0.010mmol,5mol%)的CCl4(4.0mL)溶液,将混合物在10℃下搅拌5分钟,然后在氩气保护下一次性加入化合物4(0.20mmol)。用锡箔保护后,将混合物在10℃下再搅拌72小时。将反应混合物通过硅胶柱色谱法直接纯化(PE/DCM/EA=n:5:1梯度洗脱),得到纯产物。
外消旋体的合成:
向2.0mL反应瓶中加入化合物4(0.02mmol),化合物1(0.03mmol),磷酸二苯酯(0.50mg,0.002mmol)和0.5mL DCM。将反应混合物在室温下搅拌并通过TLC监测,反应完成后,通过TLC制备硅胶板纯化得到外消旋体。
实施例37~48对底物的适用范围进行拓展,具有不同取代基的2-萘酚以中等至良好产率(64~85%)、90-93%ee得到产物5a~5l。3,5-二甲氧基苯酚也是一种有效的亲核试剂,得到5g。萘环的取代基的电子性质和位置对对映选择性、E/Z选择性的影响有限。
实施例37
根据通用步骤G,为白色泡沫状,79%产率,92%ee。
1H NMR(400MHz,丙酮-d6)δ8.97(brs,1H),8.63(d,J=8.7Hz,1H),8.08(d,J=8.7Hz,1H),7.76(d,J=8.0Hz,1H),7.69–7.64(m,3H),7.44(t,J=7.6Hz,1H),7.35–7.17(m,8H),7.11–7.06(m,2H),6.17(s,1H),5.47(brs,1H),4.51(d,J=4.3Hz,2H),1.03(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.71,152.49,144.63,140.48,135.02,134.97,130.39,129.94,129.62,129.45,129.09,128.90,128.55,128.05,127.06,126.66,126.46,126.04,125.52,124.11,123.38,122.71,120.13,119.64,114.81,49.08,36.46,29.98。HRMS(ESI)精确质量计算[M+H]+C33H32NO+,m/z:458.2478,实测值:458.2470。IR(KBr,cm-1)3514,3354,3055,2957,2862,1618,1599,1510,1215,814,743。M.P.74-76℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=13.7min,tR(minor)=16.5min,ee=92%。
实施例38
根据通用步骤G,为白色固体,64%产率,91%ee。
1H NMR(400MHz,丙酮-d6)δ8.80(brs,1H),8.51(d,J=8.8Hz,1H),8.08(d,J=8.6Hz,1H),7.70-7.64(m,2H),7.56(d,J=8.8Hz,1H),7.53(s,1H),7.33–7.16(m,8H),7.12–7.08(m,1H),7.03(d,J=8.8Hz,1H),6.15(s,1H),5.44(brs,1H),4.50(s,2H),2.40(s,3H),1.02(s,9H)。
13C NMR(101MHz,丙酮-d6)δ153.04,152.32,144.64,140.49,135.04,133.15,132.50,130.63,129.58,129.44,129.26,129.22,129.08,128.88,128.62,128.57,128.03,126.63,126.08,125.51,124.03,122.68,120.14,119.61,114.80,49.11,36.44,30.00,21.16。HRMS(ESI)精确质量计算[M+H]+C34H34NO+,m/z:472.2635,实测值:472.2629。IR(KBr,cm-1)3514,3422,3028,2955,2862,1599,1510,1470,1381,1217,1153,808,743。M.P.85-88℃。 HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=13.3min,tR(minor)=15.2min,ee=91%。
实施例39
根据通用步骤G,为白色固体,70%产率,91%ee。
1H NMR(400MHz,丙酮-d6)δ9.16(brs,1H),8.54(d,J=9.2Hz,1H),8.02(d,J=8.7Hz,1H),7.97(d,J=2.2Hz,1H),7.69(d,J=8.9Hz,1H),7.68–7.63(m,2H),7.50(d,J=7.9Hz,1H),7.34–7.17(m,7H),7.14–7.08(m,2H),6.16(s,1H),5.41(brs,1H),4.51(s,2H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ154.16,152.91,144.66,140.38,134.92,133.54,131.56,131.28,129.89,129.74,129.45,129.14,129.09,128.86,128.56,128.08,127.85,126.78,126.11,125.82,124.49,122.74,120.90,119.74,116.58,114.79,49.09,36.48,29.91。HRMS(ESI)精确质量计算[M-H]-C33H29NOBr-,m/z:534.1438,实测值:534.1433。IR(KBr,cm-1)3502,3422,3358,3055,2955,2859,1593,1371,820,743。M.P.78-80℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=15.3min,tR(minor)=20.9min,ee=91%。
实施例40
根据通用步骤G,为白色固体,78%产率,93%ee。
1H NMR(400MHz,丙酮-d6)δ8.79(brs,1H),8.39(s,1H),8.16(d,J=8.6Hz,1H),7.66–7.64(m,3H),7.60(d,J=8.8Hz,1H),7.26–7.18(m,6H),7.15–7.08(m,3H),7.01(d,J=8.8Hz,1H),6.16(s,1H),5.51(brs,1H),4.47(d,J=5.4Hz,2H),2.35(s,3H),1.04(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.79,152.42,144.74,140.58,136.44,135.22,129.65,129.59,129.44,129.15,128.82,128.67,128.50,128.01,126.61,126.34,125.50,124.98,123.66,122.61,120.17,118.69,114.82,49.04,36.59,30.06,22.21。HRMS(ESI)精确质量计算[M+H]+C34H34NO+,m/z:472.2635,实测值:472.2627。IR(KBr,cm-1)3509,3055,2955,2862,2367,1618,1599,1510,1217,818,741。M.P.65-67℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=13.3min,tR(minor)=16.4min,ee=93%。
实施例41
根据通用步骤G,为白色泡沫状,68%产率,90%ee。
1H NMR(400MHz,丙酮-d6)δ9.20(brs,1H),8.80(s,1H),8.04(d,J=8.6Hz,1H),7.70–7.65(m,4H),7.36–7.34(m,3H),7.29–7.20(m,4H),7.18(d,J=8.9Hz,1H),7.15–7.10(m,2H),6.17(s,1H),5.47(brs,1H),4.53(d,J=5.5Hz,2H),1.04(s,9H)。13C NMR(101MHz,丙酮-d6)δ154.63,153.08,144.75,140.49,136.22,135.00,131.49,129.96,129.81,129.48,129.22,128.87,128.72,128.56,128.09,128.06,126.92,126.44,125.88,125.73,123.70,122.75,121.22,120.26,119.69,114.81,49.11,36.65,29.95。HRMS(ESI)精确质量计算[M-H]-C33H29NOBr-,m/z:534.1438,实测值:534.1433。IR(KBr,cm-1)3422,3055,2955,2362,1612,1499,1215,810,737。M.P.77-79℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=15.3min,tR(minor)=19.1min,ee=90%。
实施例42
根据通用步骤G,为白色固体,77%产率,90%ee。
1H NMR(400MHz,丙酮-d6)δ8.91(s,1H),8.27(d,J=8.6Hz,1H),7.72(d,J=2.1Hz,1H),7.67–7.62(m,3H),7.58(d,J=8.7Hz,1H),7.30(ddd,J=8.4,6.7,1.4Hz,1H),7.19–7.16(m,5H),7.13–7.08(m,2H),6.98(d,J=8.7Hz,1H),6.87(dd,J=8.8,2.5Hz,1H),6.20(s,1H),5.58(brs,1H),4.40(s,2H),3.50(s,3H),1.03(s,9H)。13C NMR(101MHz,丙酮-d6)δ159.13,154.39,152.11,144.67,140.49,136.17,135.32,130.89,129.59,129.34,129.24,129.16,128.41,128.24,127.78,126.77,126.27,126.15,125.54,123.49,122.26,119.89,116.75,116.06,114.78,104.51,55.63,48.68,36.34,29.96。HRMS(ESI)精确质量计算[M+H]+C34H34NO2 +,m/z:488.2584,实测值:488.2575。IR(KBr,cm-1)3514,3354,3055,2957,2862,1736,1620,1514,1464,1221,810,743。M.P.74-77℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=15.8min,tR(minor)=22.0min,ee=90%。
实施例43
根据通用步骤G,为白色固体,78%产率,93%ee。
1H NMR(400MHz,丙酮-d6)δ8.41(brs,1H),8.24(d,J=8.5Hz,1H),7.61–7.56(m,2H),7.32–7.18(m,6H),7.10(ddd,J=8.0,6.7,1.2Hz,1H),7.03(d,J=8.9Hz,1H),6.07(d,J=2.5Hz,1H),6.02(d,J=2.4Hz,1H),5.93(s,1H),5.62(brs,1H),4.47(s,2H),3.67(s,3H),3.45(s,3H),0.90(s,9H)。13C NMR(101MHz,丙酮-d6)δ160.75,160.24,157.14,150.47,144.24,141.13,135.16,129.23,128.70,128.34,128.25,128.13,127.68,127.46,125.53,123.39,121.89,120.35,114.32,114.13,94.85,91.50,55.51,55.36,48.73,35.73,29.91。HRMS(ESI)精确质量计算[M+H]+C31H34NO3 +,m/z:468.2533,实测值:468.2525。IR(KBr,cm-1)3524,3375,2955,1618,1599,1510,1454,1207,1150,1099,810,746。M.P.55-58℃。 HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=14.6min,tR(minor)=17.3min,ee=93%。
实施例44
根据通用步骤G,为白色固体,85%产率,94%ee。
1H NMR(400MHz,丙酮-d6)δ9.10(brs,1H),8.65(d,J=8.7Hz,1H),7.97(d,J=8.8Hz,1H),7.75(d,J=7.5Hz,1H),7.64(d,J=8.8Hz,1H),7.59(d,J=8.9Hz,1H),7.46(t,J=7.6Hz,1H),7.44–7.21(m,7H),7.15(d,J=8.9Hz,1H),7.06(d,J=8.8Hz,1H),7.00(d,J=8.5Hz,1H),6.16(s,1H),5.34(brs,1H),4.49(s,2H),2.28(s,3H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.74,152.30,143.67,140.38,134.90,133.15,131.97,130.36,129.91,129.60,129.45,129.28,128.98,128.94,128.60,128.07,127.99,127.01,126.66,125.95,125.46,123.98,123.32,120.36,119.71,114.85,49.17,36.40,30.03,21.23。HRMS(ESI)精确质量计算[M+H]+C34H34NO+,m/z:472.2635,实测值:472.2629。IR(KBr,cm-1)3505,3028,2955,2957,1599,1460,1217,824,746。M.P.86-88℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=13.5min,tR(minor)=15.8min,ee=94%。
实施例45
根据通用步骤G,为白色固体,77%产率,90%ee。
1H NMR(400MHz,丙酮-d6)δ8.79(brs,1H),8.52(d,J=8.7Hz,1H),8.08(d,J=9.2Hz,1H),7.82(d,J=2.1Hz,1H),7.77(d,J=8.1Hz,1H),7.68(d,J=8.8Hz,1H),7.60(d,J=8.9Hz,1H),7.39(t,J=7.7Hz,1H),7.30–7.19(m,7H),7.15–7.11(m,2H),6.16(s,1H),5.54(brs,1H),4.46(s,2H),1.02(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.70,152.70,145.58,140.51,134.97,133.83,130.70,130.37,130.05,129.70,129.63,129.39,129.24,128.63,128.40,127.95,127.24,125.91,125.21,124.04,123.48,120.12,119.44,115.87,115.26,48.93,36.49,29.95。HRMS(ESI)精确质量计算[M-H]-C33H29NOBr-,m/z:534.1438,实测值:534.1434。IR(KBr,cm-1)3418,3059,2955,2862,1614,1587,1499,1337,820,748。M.P.94-96℃。 HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=7.6min,tR(minor)=10.0min,ee=90%。
实施例46
根据通用步骤G,为白色固体,82%产率,91%ee。
1H NMR(400MHz,丙酮-d6)δ8.95(brs,1H),8.66(d,J=8.7Hz,1H),8.19(d,J=8.8Hz,1H),7.93(d,J=2.1Hz,1H),7.76(d,J=8.3Hz,1H),7.73(d,J=9.0Hz,1H),7.67–7.64(m,3H),7.53(d,J=8.2Hz,1H),7.45(t,J=7.6Hz,1H),7.39–7.15(m,10H),7.11(d,J=8.8Hz,1H),6.18(s,1H),5.52(brs,1H),4.49(s,2H),1.05(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.64,152.44,144.91,141.67,140.39,134.92,134.73,134.24,130.31,129.99,129.89,129.60,129.57,129.35,128.95,128.43,127.94,127.57,127.44,127.06,126.69,126.64,126.29,125.76,125.41,124.08,123.34,119.88,119.51,115.15,48.98,36.41,29.95。HRMS(ESI)精确质量计算[M+H]+C39H36NO+,m/z:534.2791,实测值:534.2784。IR(KBr,cm-1)3514,3028,2957,1597,1495,756,694。M.P.78-80℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=250nm,tR(major)=18.2min,tR(minor)=21.7min,ee=91%。
实施例47
根据通用步骤G,为白色固体,63%产率,95%ee。
1H NMR(400MHz,丙酮-d6)δ8.78(brs,1H),8.51(d,J=8.7Hz,1H),8.39(s,1H),7.78(d,J=8.1Hz,1H),7.69(d,J=8.8Hz,1H),7.61(d,J=8.9Hz,1H),7.55(d,J=8.6Hz,1H),7.40(t,J=7.6Hz,1H),7.28–7.09(m,9H),6.16(s,1H),5.53(brs,1H),4.44(s,2H),1.03(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.71,152.65,145.92,140.49,136.59,134.98,130.89,130.36,130.08,129.69,129.40,129.36,128.33,127.91,127.29,126.66,125.91,125.13,123.91,123.49,120.51,120.49,119.34,119.08,115.19,48.81,36.47,29.93。HRMS(ESI)精确质量计算[M-H]-C33H29NOBr-,m/z:534.1438,实测值:534.1433。IR(KBr,cm-1)3418,3059,2955,1707,1614,1501,824,748。M.P.82-83℃。HPLC条件:HPLC DAICEL CHIRALCEL IB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=16.7min,tR(minor)=21.2min,ee=95%。
通过单晶X射线衍射分析确定产物5k的绝对构型,并借此类推其他产物的绝对构型,X射线衍射晶体结构如图1所示,5k的X射线晶体学数据保存在剑桥晶体学数据中心(CCDC),保藏号为CCDC 1867697,可以从http://www.ccdc.cam.ac.uk/data_request/cif(剑桥晶体学数据中心)获得。
实施例48
根据通用步骤G,为白色固体,80%产率,90%ee。
1H NMR(400MHz,丙酮-d6)δ9.05(brs,1H),8.79(d,J=8.3Hz,1H),8.23(s,1H),7.85(d,J=7.9Hz,1H),7.70(d,J=8.5Hz,2H),7.66(d,J=8.8Hz,1H),7.53–7.21(m,14H),7.07(d,J=8.7Hz,1H),6.21(s,1H),5.48(brs,1H),4.56(s,2H),1.04(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.72,152.49,145.08,141.78,140.33,138.97,134.96,134.89,130.39,129.99,129.72,129.70,129.48,129.41,129.36,128.65,128.23,128.13,128.08,128.00,127.86,127.62,126.63,125.52,124.27,123.73,123.28,122.07,120.55,119.62,114.84,49.33,36.43,30.00。HRMS(ESI)精确质量计算[M+H]+C39H36NO+,m/z:534.2791,实测值:534.2784。IR(KBr,cm-1)3503,3360,3055,2957,2862,1618,1599,1510,1460,1215,752,696。M.P.96-98℃。 HPLC条件:HPLC DAICEL CHIRALCELIB,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(major)=6.9min,tR(minor)=12.8min,ee=90%。
实施例49
5a化合物转化为二酚化合物7a。
在双颈烧瓶中,将200mg 5a溶于5mL MeOH,在氮气保护下,加入5%Pd-C(相对于5a的用量为10wt%),然后在真空下除去氮气,并将反应液置于1atm的H2(氢气球)下。混合物在室温下搅拌2小时,直至通过TLC显示原料完全消耗。在真空下除去氢气,并用氮气充分冲洗反应混合物,通过硅藻土过滤除去悬浮的Pd/C,蒸发溶剂,得到固体产物5,不用进一步纯化。
向冷却的浓H2SO4(1mL)水(6mL)溶液中加入产物5(145mg,0.39mmol),在搅拌下将混合物在冰浴中冷却至0℃。向反应混合物中加入亚硝酸钠(81mg,1.17mmol)的水(2mL)溶液。在室温下搅拌2小时后,加入5mL蒸馏水,混合物回流1小时,冷却、过滤。用3×50mLCHCl3萃取,有机相用无水MgSO4干燥、过滤并蒸发溶剂,得到106mg产物7a,两步产率66%,92%ee。
1H NMR(400MHz,丙酮-d6)δ8.99(brs,2H),8.73(d,J=8.7Hz,1H),8.10(s,1H),7.80(d,J=8.0Hz,1H),7.76(d,J=8.9Hz,1H),7.74–7.72(m,1H),7.68(d,J=8.8Hz,1H),7.59(s,1H),7.34(t,J=7.3Hz,1H),7.27(d,J=8.8Hz,1H),7.21–7.18(m,2H),7.05(d,J=8.8Hz,1H),6.17(s,1H),1.04(s,9H)。13C NMR(101MHz,丙酮-d6)δ153.27,152.90,152.23,135.58,134.49,130.50,130.24,130.13,129.89,129.62,129.11,127.10,126.88,126.30,125.56,124.62,124.34,123.86,123.49,121.14,119.16,118.44,36.13,29.96。HRMS(ESI)精确质量计算[M-H]-C26H23O2 -,m/z:367.1704,实测值:367.1699。IR(KBr,cm-1)3464,3364,2961,1622,1516,1341,1269,1200,816,750。M.P.226-228℃。HPLC条件:HPLC DAICEL CHIRALPAK ID,正己烷/异丙醇=95/5,0.5mL/min,λ=230nm,tR(minor)=10.0min,tR(major)=11.6min,ee=92%。
7a可以合成手性磷酸ECPA
在氩气保护下,向装有搅拌棒的圆底烧瓶中加入7a(92%ee,730mg,2.0mmol)和无水THF(20mmL),将所得溶液置于冰水浴中,然后分批加入NaH(60%,分散于矿物油,320mg,8.0mmol)。在0℃下搅拌1小时后,加入MOMCl(380μL,5.0mmol),将混合物温热至室温,再搅拌2小时,随后用饱和NH4Cl水溶液(5.0mL)淬灭反应,并用H2O(30mL)稀释,将得到的混合物用2×30mL EA萃取,将合并的有机相用H2O(30mL)和食盐水洗涤,用Na2SO4干燥并浓缩。通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到778mg 8a(85%收率,92%ee),为无色油状物。
1H NMR(400MHz,丙酮)δ8.81(d,J=8.8Hz,1H),8.64(d,J=8.0Hz,1H),7.78(d,J=8.2Hz,2H),7.72(t,J=9.3Hz,2H),7.56–7.51(m,2H),7.38–7.34(m,2H),7.25(d,J=9.0Hz,1H),7.21(d,J=9.0Hz,1H),5.91(s,1H),4.85(d,J=6.6Hz,1H),4.67(d,J=7.1Hz,1H),4.63(d,J=6.2Hz,1H),4.40(d,J=6.5Hz,1H),2.63(s,3H),2.50(s,3H),1.00(s,9H)。13CNMR(101MHz,丙酮)δ206.09,152.87,152.56,147.88,136.02,135.55,130.98,129.99,129.70,129.38,129.05,128.99,128.43,128.21,128.10,127.60,126.02,125.84,125.35,123.99,123.93,115.70,115.48,93.51,93.37,55.35,55.21,35.91,30.05。HRMS(ESI)精确质量计算[M+Na]+C30H32NaO4 +,m/z:479.2193,实测值:479.2191。IR(KBr,cm-1)3053,2955,2899,1593,1506,1248,1146,1040,1016,810,748。HPLC条件:HPLC DAICEL CHIRALCEL OD3,正己烷/异丙醇=95/05,0.5mL/min,λ=254nm,tR(minor)=8.33min,tR(major)=9.08min,ee=92%。
在氩气保护下,向装有搅拌棒的干燥圆底烧瓶中,加入8a(685mg,1.5mmol)和无水Et2O 20mL,将所得溶液冷却至-78℃,然后滴加2.4M n-BuLi/戊烷(2.5mL,6.0mmol),搅拌0.5小时后,将反应物缓慢升温至室温,再搅拌2小时。将反应溶液冷却至-78℃,加入I2(1.52g,6.0mmol)的无水Et2O溶液,缓慢升温至室温后,将反应物再搅拌2小时。将得到的混合物用2.0M Na2S2O3水溶液(20mL)淬灭,并用30mL乙酸乙酯萃取,将合并的有机层用30mLH2O洗涤,用Na2SO4干燥并浓缩,通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到778mg 8b(90%收率,92%ee),为白色固体。
1H NMR(400MHz,CD2Cl2)δ8.68(d,J=8.7Hz,1H),8.59(d,J=8.5Hz,1H),8.39(d,J=10.1Hz,2H),7.72(d,J=8.1Hz,2H),7.57(ddd,J=8.0,7.1,1.0Hz,2H),7.50–7.45(m,2H),5.98(s,1H),4.83(d,J=4.3Hz,1H),4.53(s,1H),4.29(d,J=3.1Hz,1H),3.67(d,J=4.2Hz,1H),3.13(s,3H),2.87(s,3H),0.94(s,9H)。13C NMR(101MHz,CD2Cl2)δ151.51,150.95,150.44,140.37,140.34,136.71,135.93,135.04,133.80,133.07,132.77,130.05,128.57,127.27,126.96,126.80,126.55,126.30,126.04,124.70,99.70,99.65,91.70,91.64,58.11,57.91,36.40,29.49。HRMS(ESI)精确质量计算[M+H]+C30H30I2NaO4 +,m/z:731.0126,实测值:731.0113。IR(KBr,cm-1)3449,2955,1734,1163,932,752。M.P.74-77℃。 HPLC条件:HPLC DAICEL CHIRALPAK IG,正己烷/异丙醇=95/05,0.5mL/min,λ=254nm,tR(major)=9.49min,tR(minor)=17.23min,ee=92%。
在氩气保护下,向装有搅拌棒的25mL Schlenk管中加入8b(500mg,0.71mmol),Cs2CO3(1.63g,5.0mmol),3,5-双(三氟甲基)苯硼酸(1.29g,5.0mmol),Pd(PPh3)4(162mg,0.14mmol)和甲苯(20mL),将混合物用氩气鼓泡脱气10分钟,随后将Schlenk管密封,并在50℃下搅拌12小时。冷却至室温后,将得到的混合物用H2O(20mL)稀释,并用2×30mL乙酸乙酯萃取,将合并的有机层用H2O(20mL)和食盐水(20mL)洗涤,用Na2SO4干燥并浓缩,通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到530mg 8a(87%收率,92%ee),为淡黄色固体。
1H NMR(400MHz,丙酮)δ8.82(d,J=8.7Hz,1H),8.69(d,J=7.7Hz,1H),8.14(s,4H),8.06(s,1H),8.01(s,2H),7.97(d,J=12.2Hz,3H),7.68(dd,J=15.4,7.7Hz,3H),7.55(dt,J=7.7,3.9Hz,3H),6.14(s,1H),4.33-4.26(m,1H),3.96–3.91(m Hz,2H),3.02(brs,1H),2.52(s,3H),2.31(s,3H),1.06(s,9H)。13C NMR(101MHz,丙酮)δ151.19,151.08,150.90,142.68,142.65,136.31,135.42,133.42,133.26,133.09,132.75,131.84,131.69(q,2JCF=32.9Hz),131.70,131.59(q,2JCF=33.1Hz),131.20,129.31,128.99,128.48,127.42,127.14,126.47,126.16,124.58(q,1JCF=271.9Hz),124.55(q,1JCF=272.0Hz),121.47(penta,3JCF=3.8Hz),100.34,100.28,56.58,56.20,36.55,29.77。19F NMR(376MHz,丙酮)δ-63.21,-63.22。HRMS(ESI)精确质量计算[M+H]+C46H40O4F12 +,m/z:898.2760,实测值:898.2734。IR(KBr,cm-1)3447,2961,1377,1279,1175,1134,1009,756,685。M.P.84-86℃。HPLC条件:HPLC DAICEL CHIRALPAK AZ3,正己烷/异丙醇=100/0,0.5mL/min,λ=230nm,tR(major)=9.46min,tR(minor)=10.31min,ee=92%。
向8c(440mg,0.50mmol)的DCM(10mL)溶液中加入三氟乙酸(5mL),将反应液在室温下搅拌,并通过TLC监测。反应完成后,将溶液真空浓缩,通过硅胶柱色谱法纯化残余物,用PE/EA洗脱,得到二酚(297mg,75%收率),为浅黄色泡沫状。
在装有搅拌棒的干燥Schlenk管中加入二酚(230mg,0.29mmol),Et3N(242μL,1.74mmol)和无水DCM(4.0mL)。将溶液在室温下搅拌10分钟,然后缓慢加入POCl3(108μL,1.16mmol),搅拌6小时后,加入Et3N(80.5μL,0.58mmol),H2O(2.0mL)和THF(2.0mL)。随后,混合物在室温下搅拌8小时,之后用H2O(20mL)稀释,用2M HCl酸化至pH 2~3,并用30mL DCM萃取,用2×20mL HCl洗涤有机层并浓缩,通过硅胶柱色谱法纯化残余物,用PE/EA洗脱。将获得的产物溶于30mL DCM中,用3×20mL 2M HCl洗涤并浓缩,得到产物(241mg,97%产率),为白色固体。
1H NMR(500MHz,丙酮)δ9.01(d,J=8.7Hz,1H),8.34(s,2H),8.25(s,1H),8.20–8.17(m,3H),8.13–8.11(m,3H),8.04(d,J=7.4Hz,1H),8.02(s,1H),7.92(t,J=7.7Hz,1H),7.69(t,J=7.5Hz,1H),7.50(p,J=6.5Hz,2H),6.45(s,1H),1.08(s,9H)。13C NMR(126MHz,丙酮)δ155.96,146.95,146.87,144.44,144.38,140.80,140.78,134.97,134.96,133.22,133.21,133.06,131.99(q,2JCF=33.3Hz),131.96(q,2JCF=33.2Hz),131.89,131.57,131.36,131.33,131.13,131.10,130.69,130.66,130.31,129.80,129.06,128.64,127.49,127.45,127.03,126.98,126.29,126.03,124.51(q,1JCF=272.1Hz),124.39(q,1JCF=272.2Hz),122.80,122.79,122.15(p,3JCF=3.6Hz),122.05(p,3JCF=3.9Hz),36.21,29.88。31P NMR(202MHz,丙酮)δ-11.23。19F NMR(376MHz,丙酮)δ-63.20,-63.26。HRMS(ESI)精确质量计算[M+H]+C42H28F12O4P+,m/z:855.1528,实测值:855.1542。IR(KBr,cm-1)3422,2967,1620,1377,1283,1180,1138,1016,694。M.P.168-170℃。
实施例50
ECPA手性磷酸的应用
为了证明ECPA手性磷酸在不对称催化中应用价值,首先尝试了吲哚和亚胺10a或11a之间的有机催化不对称Mannich反应,在ECPA的催化下,以优异的产率和较好的对映选择性顺利获得产物10b和11b。这一结果说明ENOBIN骨架衍生的手性磷酸具有很好的应用前景。而且基于相似的结构,5b~5l、3a~3z、3aa~3ag也可以衍生出相应的手性磷酸催化剂。
在氩气保护下,向装有搅拌棒的干燥Schlenk管中加入吲哚(23.4mg,0.20mmol),ECPA(0.85mg,0.001mmol)和PhCl(4.0mL),向溶液中加入10a(16.1mg,0.10mmol)。在室温下搅拌36小时后,将溶液经硅胶柱色谱纯化,用PE/EA洗脱,得到34.3mg 10b,为白色固体(91%收率,70%ee)。
1H NMR(400MHz,CDCl3)δ8.02(s,1H),7.52(d,J=8.2Hz,2H),7.25(t,J=7.7Hz,2H),7.23–7.16(m,5H),7.13(t,J=7.6Hz,1H),7.06(d,J=8.0Hz,2H),6.97(t,J=7.6Hz,1H),6.61(d,J=2.0Hz,1H),5.83(d,J=7.1Hz,1H),5.25–5.21(m,1H),2.34(s,3H)。13C NMR(101MHz,CDCl3)δ143.10,140.37,137.46,136.63,129.33,128.39,127.41,127.30,127.22,125.46,124.00,122.49,119.93,119.31,116.29,111.45,55.15,21.55。M.P.158-160℃。HPLC条件:HPLC DAICEL CHIRALPAK IB,正己烷/异丙醇=80/20,1.0mL/min,λ=214nm,tR(minor)=13.54min,tR(major)=20.4min,ee=70%。
用热风枪加热装有(200mg)的Schlenk管10分钟,活化分子筛。待冷却后,在氩气保护下加入吲哚(23.4mg,0.20mmol),ECPA(4.3mg,0.005)和PhCF3(3.0mL),在-10℃下向溶液中加入11a(16.1mg,0.10mmol),在-10℃下搅拌72小时后,将溶液直接经硅胶柱色谱纯化,用PE/EA洗脱,得到25.5mg 11b,为黄色固体(95%收率,73%ee)。
通过与文献方法获得的S-11b的HPLC数据比较来确定11b的绝对构型。
1H NMR(400MHz,CDCl3)δ8.23(s,1H),7.49(d,J=8.0Hz,1H),7.41(d,J=7.5Hz,1H),7.37–7.31(m,3H),7.27–7.23(m,1H),7.18(t,J=7.6Hz,2H),7.06(t,J=7.5Hz,1H),6.69(d,J=2.5Hz,1H),6.34(s,1H),2.34(s,3H),2.02(s,3H)。13C NMR(101MHz,CDCl3)δ169.52,145.42,137.21,128.34,126.97,126.33,124.86,123.24,122.71,122.31,120.33,119.88,111.84,59.44,26.75,24.58。IR(KBr,cm-1)3433,3203,3183,1661,1489,748。M.P.202-205℃。 HPLC条件:HPLC DAICEL CHIRALPAK AD3,正己烷/异丙醇=90/10,1.0mL/min,λ=214nm,tR(minor)=18.66min,tR(major)=21.16min,ee=73%。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何属于本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应该以权利要求的保护范围为准。
Claims (6)
2.根据权利要求1所述的ENOBIN轴手性化合物,其特征在于,R1选自氢、甲基、苯基、甲氧基、溴、酯基、羟基。
3.根据权利要求1所述的ENOBIN轴手性化合物,其特征在于,R2选自氢、甲基、叔丁基乙炔基、苯基、溴、甲氧基。
4.根据权利要求1所述的ENOBIN轴手性化合物,其特征在于,R3选自叔丁基、异丙基、乙基、苯基、氯代苯基、溴代苯基;R4选自氢、氯、氰基、酯基;R9为甲氧基。
6.根据权利要求5所述的方法,其特征在于,所述手性磷酸的用量至少是1mol%;所述反应以二氯甲烷、四氯化碳、苯、甲苯、三氟甲苯中的一种或多种为溶剂;所述式A化合物和式B化合物的摩尔比为1~3:1;所述反应的温度为0℃以上。
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