CN105153032A - 6-h-菲啶类化合物的一锅法制备方法 - Google Patents

6-h-菲啶类化合物的一锅法制备方法 Download PDF

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CN105153032A
CN105153032A CN201510668949.3A CN201510668949A CN105153032A CN 105153032 A CN105153032 A CN 105153032A CN 201510668949 A CN201510668949 A CN 201510668949A CN 105153032 A CN105153032 A CN 105153032A
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韩文勇
陈永正
周晓建
崔宝东
向广艳
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Zunyi Medical University
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D221/00Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00
    • C07D221/02Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00 condensed with carbocyclic rings or ring systems
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    • C07D221/12Phenanthridines
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D221/00Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00
    • C07D221/02Heterocyclic compounds containing six-membered rings having one nitrogen atom as the only ring hetero atom, not provided for by groups C07D211/00 - C07D219/00 condensed with carbocyclic rings or ring systems
    • C07D221/04Ortho- or peri-condensed ring systems
    • C07D221/18Ring systems of four or more rings
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Abstract

本发明公开了一种6-<i>H</i>-菲啶类化合物的制备方法,包括:在溶剂中加入反应物<i>N</i>-保护的芳胺和邻溴溴苄类化合物,再加入金属钯催化剂,配体和碱,在加热及惰性气体保护条件下进行化学反应,反应完成经后处理得到本发明化合物纯品。本发明的制备方法采用简单易得的<i>N</i>-保护的芳胺和商业易得的邻溴溴苄类化合物为原料,通过“一锅煮”三步串联反应获得6-<i>H</i>-菲啶类化合物,具有操作简便、后处理简单、产率较高等特点。

Description

6-H-菲啶类化合物的一锅法制备方法
技术领域
本发明属于杂环化合物技术领域,具体涉及到6-H-菲啶类化合物的制备方法。
背景技术
菲啶是一类重要的稠杂环化合物,其结构单元广泛存在于天然产物、药物活性分子和有机功能材料中,因此针对这类化合物的合成受到越来越多的关注。传统的方法是通过Pictet-Spengler反应来合成,近年来也发展了其它的新方法,如光催化的自由基反应、微波辐射的环化反应、5,6-二氢菲啶化合物的氧化反应等等。但是对于6-H-菲啶类化合物的合成报道较少,尤其是使用简单易得的原料通过“一锅煮”的方法来合成这类化合物还未见报道。本发明以易得的N-保护的芳胺和商业易得的邻溴溴苄类化合物为原料,采用“一锅煮”的方法,可以简便、高效的合成6-H-菲啶类化合物。
发明内容
本发明的目的在于提供一种以N-保护的芳胺和邻溴溴苄类化合物制备6-H-菲啶类化合物的方法。
本发明所涉及的6-H-菲啶类化合物化学结构通式为:
其中,取代基R1和R2为烷基、烷氧基、酰基、硝基、氰基、卤素中的任意一种。
其反应过程如下:
上述所述的催化剂为零价钯[如四(三苯基膦)钯、三(二亚苄基丙酮)二钯等]和二价钯催化剂[醋酸钯、三氟乙酸钯、特戊酸钯、氯化钯等]。
上述反应中,配体为膦配体[三苯基膦、三正丁基膦,1,3-双(二苯基膦)丙烷、4,5-双二苯基膦-9,9-二甲基氧杂蒽,2,2'-双-(二苯膦基)-1,1'-联萘,1,1'-双(二苯基膦)二茂铁等]和氮配体[吡啶、1,10-菲啰啉等]。
上述反应中,碱为无机碱,如氢氧化钠、氢氧化钾、碳酸锂、碳酸钠、碳酸钾、碳酸铯、特戊酸钠等。
上述反应中,溶剂可选用对反应底物和目标产物具有较好溶解性的溶剂,以利于反应的顺利进行,例如:N,N-二甲基甲酰胺,二甲基亚砜,甲苯,1,4-二氧六环,乙腈等。
上述反应中,惰性气体为氩气或者氮气。
上述反应的温度为120~160℃。
上述反应的时间为20-28小时。
所制得的6-H-菲啶类化合物可以采用色谱、结晶、层析、萃取等方法分离,优选用柱色谱方法进行分离。
本发明以N-保护的芳胺和邻溴溴苄类化合物为原料合成6-H-菲啶类化合物,具有以下优点:
1.合成的路线短(一步可得到目标化合物),收率较高;
2.原料易得,反应易于操作;
3.通过亲核取代/C-H活化/芳构化串联反应得到目标化合物。
附图说明
图1为本发明实施例制备的6-H-菲啶类化合物代表性图谱1。
图2为本发明实施例制备的6-H-菲啶类化合物代表性图谱2。
具体实施方式
下面结合附图和具体实施例对本发明的实施方式作进一步说明,但是本发明并不限于下述实施方式,在本领域普通技术人员所具备的知识范围内,还可能对其作出种种变化。
一种“一锅法”制备6-H-菲啶类化合物的方法,其反应过程如下:
其中,PG(ProtectedGroup)为保护基,包括-Ms(甲磺酰基)、-Ts(对甲基苯磺酰基)、-Ns(对硝基苯磺酰基)和-Ac(乙酰基);取代基R1和R2为烷基、烷氧基、酰基、硝基、氰基、卤素中的任意一种。
合成代表性化合物1的操作步骤:
N-保护的芳胺、邻溴溴苄类化合物,金属钯催化剂,配体和碱加入到有机溶剂中,在加热及惰性气体保护条件下反应,反应完成经后处理得到本发明化合物纯品。
所述的N-保护的芳胺化合物的结构式如下:
,PG(ProtectedGroup)为保护基,包括-Ms(甲磺酰基)、Ts(对甲基苯磺酰基)、Ns(对硝基苯磺酰基)、Ac(乙酰基)等。
所述的邻溴溴苄类化合物的结构式如下:
所述的6-H-菲啶类化合物的结构式如下:
本发明制备6-H-菲啶化合物的制备方法中,采用柱色谱纯化的方法,使用的溶剂是:乙酸乙酯和石油醚(V:V=1:5)。
称取N-甲磺酰基苯胺(51.4mg,0.3mmol)和邻溴溴苄(75.0mg,0.3mmol)于干燥的反应瓶中,并加入碳酸铯(391.0mg,1.2mmol),三氟乙酸钯(5.0mg,0.015mmol),三苯基膦(15.7mg,0.06mmol)和2mL无水N,N-二甲基甲酰胺,氮气保护下,160°C反应24小时。反应完毕后将反应液倒入10mL饱和食盐水中,用乙酸乙酯萃取(5x10mL),合并有机相,无水Na2SO4干燥,过滤,浓缩得粗产物。经柱色谱分离得到目标化合物1(43.0mg,80%)。
在本实施例中,使用与制备化合物1相同的反应条件,还可得到化合物2-19:
化合物1-19的数据为:
化合物1:Whitesolid,mp106.8-108.2°C;1HNMR(400MHz,CDCl3)δ9.27(s,1H),8.60-8.53(m,2H),8.20(d,J=8.0Hz,1H),8.01(d,J=8.0Hz,1H),7.84-7.80(m,1H),7.77-7.71(m,1H),7.69-7.64(m,2H);13CNMR(100MHz,CDCl3)δ153.6,144.5,132.6,131.1,130.2,128.8,128.7,127.5,127.1,126.4,124.2,122.3,121.9;HRMS(ESI-TOF)Calcd.forC13H10N[M+H]+:180.0808;found:180.0803.
化合物2:Lightyellowsolid,mp93.1-94.6°C;1HNMR(400MHz,CDCl3)δ9.30(s,1H),8.56(d,J=8.0Hz,1H),8.41(d,J=8.0Hz,1H),8.02(d,J=8.0Hz,1H),7.83-7.79(m,1H),7.69-7.65(m,1H),7.61-7.53(m,2H),2.99(s,3H);13CNMR(100MHz,CDCl3)δ152.2,143.3,137.8,132.9,131.0,129.6,128.7,127.3,126.7,126.2,124.0,122.1,120.2,18.8;HRMS(ESI-TOF)Calcd.forC14H12N[M+H]+:194.0964;found:194.0958.
化合物3:Lightyellowoil;1HNMR(400MHz,CDCl3)δ9.31(s,1H),8.57(d,J=8.0Hz,1H),8.43-8.41(m,1H),8.02(d,J=8.0Hz,1H),7.82-7.78(m,1H),7.68-7.64(m,1H),7.63-7.59(m,2H),3.40(q,J=7.6Hz,2H),1.45(td,J=1.2Hz,7.6Hz,3H);13CNMR(100MHz,CDCl3)δ152.2,143.7,142.7,133.0,130.8,128.7,127.9,127.3,126.9,126.2,124.1,122.1,120.1,25.3,15.6;HRMS(ESI-TOF)Calcd.forC15H14N[M+H]+:208.1121;found:208.1120.
化合物4:Whitesolid,mp73.4-74.8°C;1HNMR(400MHz,DMSO-d 6+CDCl3)δ9.12(s,1H),8.39(d,J=8.4Hz,1H),7.95(d,J=8.4Hz,1H),7.86(d,J=8.0Hz,1H),7.67-7.63(m,1H),7.51(d,J=7.2Hz,1H),7.40(t,J=8.0Hz,1H),6.97(d,J=8.0Hz,1H),4.16(q,J=7.2Hz,2H),1.44(td,J=0.8Hz,7.0Hz,3H);13CNMR(100MHz,DMSO-d 6+CDCl3)δ154.9,151.7,135.1,132.0,130.6,128.3,127.3,127.0,126.0,124.9,122.0,113.5,109.0,64.0,14.5;HRMS(ESI-TOF)Calcd.forC15H14NO[M+H]+:224.1070;found:224.1070.
化合物5:Lightyellowsolid,mp101.1-102.4°C;1HNMR(400MHz,CDCl3)δ9.37(s,1H),8.56(d,J=8.4Hz,1H),8.46(d,J=8.4Hz,1H),8.06(d,J=8.0Hz,1H),7.89-7.82(m,2H),7.73(td,J=0.8,7.6Hz,1H),7.57(td,J=1.6,8.0Hz,1H);13CNMR(100MHz,CDCl3)δ154.2,140.8,134.4,132.4,131.6,129.2,129.1,128.3,127.1,126.4,126.0,122.2,121.3;HRMS(ESI-TOF)Calcd.forC13H9ClN[M+H]+:214.0418;found:214.0419.
化合物6:Lightyellowsolid,45.2mg,78%yield,mp90.1-91.3°C;1HNMR(400MHz,CDCl3)δ9.22(s,1H),8.58(d,J=8.4Hz,1H),8.34(s,1H),8.08(d,J=8.4Hz,1H),8.02(d,J=8.0Hz,1H),7.84(td,J=1.2,7.6Hz,1H),7.69(td,J=1.2,7.6Hz,1H),7.57(dd,J=1.2,8.4Hz,1H),2.63(s,3H).13CNMR(100MHz,CDCl3)δ152.7,142.8,137.1,132.4,130.9,130.5,129.9,128.8,127.4,126.6,124.0,121.9,22.1.HRMS(ESI-TOF)Calcd.forC14H12N[M+H]+:194.0964;found:194.0962.
化合物7:Whitesolid,39.5mg,63%yield,mp103.7-105.1°C;1HNMR(400MHz,CDCl3)δ9.09(s,1H),8.42(d,J=8.4Hz,1H),8.07(d,J=9.2Hz,1H),7.94(d,J=8.0Hz,1H),7.79(d,J=2.8Hz,1H),7.75(d,J=7,6Hz,1H),7.62(d,J=7,6Hz,1H),7.32(dd,J=2.4,8.8Hz,1H),3.95(s,3H);13CNMR(100MHz,CDCl3)δ158.4,151.0,139.7,132.0,131.4,130.5,128.6,127.5,126.5,125.1,121.8,118.5,103.0,55.6;HRMS(ESI-TOF)Calcd.forC14H12NO[M+H]+:210.0913;found:210.0912.
化合物8:Lightyellowsolid,mp130.8-132.5°C;1HNMR(400MHz,CDCl3)δ9.23(s,1H),8.48(d,J=8.4Hz,1H),8.19-8.15(m,2H),8.05(d,J=8.4Hz,1H),7.89-7.85(m,1H),7.76-7.73(m,1H),7.51-7.45(m,1H);13CNMR(100MHz,CDCl3)δ161.5(d,J=245.8Hz,1C),152.9(d,J=2.7Hz,1C),141.4,132.4(d,J=9.2Hz,1C),132.1(d,J=4.3Hz,1C),131.2,128.6(d,J=66.1Hz,1C),126.5,125.6(d,J=9.2Hz,1C),122.2,117.7(d,J=24.1Hz),107.3(d,J=23.0Hz).HRMS(ESI-TOF)Calcd.forC13H9FN[M+H]+:198.0714;found:198.0713.
化合物9:Whitesolid,mp155.8-157.2°C;1HNMR(400MHz,CDCl3)δ9.20(s,1H),8.43-8.42(m,2H),8.07(d,J=8.4Hz,1H),8.00(d,J=8.4Hz,1H),7.82(t,J=7.6Hz,1H),7.70(t,J=7.6Hz,1H),7.63(dd,J=0.4,8.4Hz,1H).13CNMR(100MHz,CDCl3)δ153.8,142.8,133.1,131.6,131.5,131.3,129.2,128.9,128.2,126.5,125.2,122.0,121.9;HRMS(ESI-TOF)Calcd.forC13H9ClN[M+H]+:214.0418;found:214.0417.
化合物10:Lightyellowsolid,mp141.9-143.3°C;1HNMR(400MHz,CDCl3)δ9.22(s,1H),8.85(d,J=8.4Hz,1H),8.07(d,J=8.4Hz,1H),7.90(s,1H),7.84(td,J=1.6,8.0Hz,1H),7.69(d,J=8.0Hz,1H),7.37(s,1H),3.10(s,3H),2.56(s,3H);13CNMR(100MHz,CDCl3)δ153.8,141.6,138.0,135.3,134.0,133.1,130.5,129.3,128.8,127.4,126.4,126.3,26.7,21.3;HRMS(ESI-TOF)Calcd.forC15H14N[M+H]+:208.1121;found:208.1119.
化合物11:Lightyellowsolid,mp86.7-88.2°C;1HNMR(400MHz,CDCl3)δ9.29(s,1H),8.88(d,J=8.4Hz,1H),8.09(d,J=8.0Hz,1H),7.86-7.82(m,1H),7.71(td,J=0.8,7.6Hz,1H),7.52(d,J=7.4Hz,1H),7.42(d,J=7.4Hz,1H),3.09(s,3H),2.86(s,3H);13CNMR(100MHz,CDCl3)δ152.3,144.7,136.0,134.2,133.1,130.8,130.2,129.1,128.9,127.5,126.7,126.6,123.8,26.9,19.4.HRMS(ESI-TOF)Calcd.forC15H14N[M+H]+:208.1121;found:208.1121.
化合物12:Lightyellowsolid,mp117.0-118.5°C;1HNMR(400MHz,CDCl3)δ9.22(s,1H),8.53(d,J=8.4Hz,1H),8.16(s,1H),7.99(d,J=8.0Hz,1H),7.78(d,J=7.6Hz,1H),7.64(d,J=7.6Hz,1H),7.41(s,1H),2.85(s,3H),2.56(s,3H).13CNMR(100MHz,CDCl3)δ151.3,141.6,137.3,136.4,132.6,131.3,130.6,128.6,127.1,126.3,123.9,122.1,119.7,22.0,18.7.HRMS(ESI-TOF)Calcd.forC15H14N[M+H]+:208.1121;found:208.1121.
化合物13:Lightyellowsolid,mp145.1-146.4°C;1HNMR(400MHz,CDCl3)δ9.27(s,1H),8.53(d,J=8.4Hz,1H),8.29(d,J=8.4Hz,1H),7.99(d,J=8.0Hz,1H),7.78(t,J=7.6Hz,1H),7.63(t,J=7.6Hz,1H),7.46(d,J=8.4Hz,1H),2.83(s,3H),2.53(s,3H);13CNMR(100MHz,CDCl3)δ152.1,143.2,136.9,135.5,133.0,130.7,129.3,128.6,126.9,125.7,122.0,121.9,119.2,20.8,14.0;HRMS(ESI-TOF)Calcd.forC15H14N[M+H]+:208.1121;found:208.1119.
化合物14:Lightyellowsolid,mp133.5-135.1°C;1HNMR(400MHz,CDCl3)δ9.48(s,1H),9.42(d,J=8.0Hz,1H),8.65(d,J=8.0Hz,1H),8.52(d,J=8.0Hz,1H),8.13(d,J=7.2Hz,1H),8.03-7.98(m,2H),7.87(t,J=6.8Hz,1H),7.79(t,J=7.2Hz,1H),7.74-7.67(m,2H);13CNMR(100MHz,CDCl3)δ152.1,141.6,133.4,132.9,132.1,130.9,128.8,128.0,127.8,127.5,127.2,127.1,127.0,124.8,122.3,121.2,120.0;HRMS(ESI-TOF)Calcd.forC17H12N[M+H]+:230.0964;found:230.0965.
化合物15:Yellowsolid,mp109.1-110.5°C;1HNMR(400MHz,CDCl3)δ9.23(s,1H),8.52-8.48(m,2H),8.17(d,J=8.0Hz,1H),7.71-7.64(m,2H),7.50-7.47(m,1H),7.38(s,1H),3.99(s,3H);13CNMR(100MHz,CDCl3)δ159.0,152.9,143.7,130.2,127.8,127.3,127.1,124.4,123.7,122.2,121.9,108.1,55.7;HRMS(ESI-TOF)Calcd.forC14H12NO[M+H]+:210.0913;found:210.0917.
化合物16:Lightyellowsolid,mp140.8-142.1°C;1HNMR(400MHz,CDCl3)δ9.19(s,1H),8.48(d,J=9.2Hz,1H),8.12(s,1H),7.44(dd,J=2.0,9.2Hz,1H),7.38(s,1H),7.34(d,J=2.0Hz,1H),3.98(s,3H),2.84(s,3H),2.57(s,3H);13CNMR(100MHz,CDCl3)δ158.7,150.6,140.9,137.3,136.6,130.5,127.7,127.2,124.2,123.9,121.9,119.3,107.7,55.7,22.1,18.7;HRMS(ESI-TOF)Calcd.forC16H16NO[M+H]+:238.1226;found:238.1225.
化合物17:Lightyellowsolid,mp146.3-147.3°C;1HNMR(400MHz,CDCl3)δ9.22(s,1H),8.46(d,J=8.8Hz,1H),8.24(d,J=8.8Hz,1H),7.47-7.42(m,2H),7.34-7.33(m,1H),3.98(s,3H),2.82(s,3H),2.53(s,3H);13CNMR(100MHz,CDCl3)δ158.5,151.4,142.5,135.9,135.4,129.5,127.6,127.0,123.7,122.2,122.0,118.8,107.7,55.7,20.8,14.0;HRMS(ESI-TOF)Calcd.forC16H16NO[M+H]+:238.1226;found:238.1226.
化合物18:Yellowsolid,mp273.8-275.6°C;1HNMR(400MHz,DMSO-d 6+CDCl3)δ9.61-9.58(m,2H),9.51(s,1H),9.12(d,J=8.0Hz,1H),8.40(d,J=9.2Hz,1H),8.36-8.31(m,2H),8.29-8.24(m,2H),8.19-8.13(m,1H),8.09-8.02(m,2H),7.86(t,J=7.6Hz,1H);13CNMR(100MHz,DMSO-d 6+CDCl3)δ153.0,138.2,132.5,131.7,131.5,131.1,130.1,129.3,128.9,128.6,128.3,128.2,128.1,127.0,126.5,126.1,125.7,124.3,123.9,123.1,121.6,119.1;HRMS(ESI-TOF)Calcd.forC23H14N[M+H]+:304.1121;found:304.1119.
化合物19:Lightyellowsolid,mp108.7-110.1°C;1HNMR(400MHz,CDCl3)δ9.31(s,1H),9.18-9.12(m,1H),9.08-9.03(m,1H),8.32(dd,J=1.2,8.0Hz,1H),8.05-8.02(m,1H),7.98-7.95(m,1H),7.91-7.87(m,1H),7.81-7.77(m,1H),7.73-7.70(m,3H);13CNMR(100MHz,CDCl3)δ152.7,146.6,135.2,131.2,130.3,129.0,128.8,128.3,128.2,127.9,127.1,127.0,126.9,125.3,125.1,124.7;HRMS(ESI-TOF)Calcd.forC17H12N[M+H]+:230.0964;found:230.0962。

Claims (10)

1.一种6-H-菲啶类化合物的“一锅法”制备方法,其特征是:反应过程如下:
其中,N-保护的芳胺化合物,PG(ProtectedGroup)为保护基,包括-Ms(甲磺酰基)、-Ts(对甲基苯磺酰基)、-Ns(对硝基苯磺酰基)和-Ac(乙酰基);取代基R1和R2为烷基、烷氧基、酰基、硝基、氰基、卤素中的任意一种。
2.根据权利要求1所述的制备方法,其特征是:所述反应中的金属钯催化剂为零价钯或/和二价钯,包括四(三苯基膦)钯、三(二亚苄基丙酮)二钯、醋酸钯、三氟乙酸钯、特戊酸钯和氯化钯。
3.根据权利要求1所述的制备方法,其特征是:所述反应中的配体为膦配体或/和氮配体,包括三苯基膦、三正丁基膦、1,3-双(二苯基膦)丙烷、4,5-双二苯基膦-9,9-二甲基氧杂蒽、2,2'-双-(二苯膦基)-1,1'-联萘、1,1'-双(二苯基膦)二茂铁、吡啶和1,10-菲啰啉。
4.根据权利要求1所述的制备方法,其特征是:所述反应中的碱为无机碱,包括氢氧化钠、氢氧化钾、碳酸锂、碳酸钠、碳酸钾、碳酸铯或特戊酸钠。
5.根据权利要求1所述的制备方法,其特征是:所述反应中溶剂为N,N-二甲基甲酰胺,二甲基亚砜,甲苯,1,4-二氧六环或乙腈。
6.根据权利要求1所述的制备方法,其特征是:所述反应中惰性气体为氩气或氮气。
7.根据权利要求1-6之一所述的制备方法,其特征是:所述反应温度为120~160℃。
8.根据权利要求1-6之一所述的制备方法,其特征是:所述反应的时间为20-28小时。
9.根据权利要求1所述的制备方法,其特征是:所述反应所得物采用色谱法、结晶法、层析法或萃取法进行分离。
10.根据权利要求1所述的制备方法,其特征是:所述反应所得物采用柱色谱方法进行分离。
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