CN116478158A - 一种制备螺环化合物的方法 - Google Patents

一种制备螺环化合物的方法 Download PDF

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CN116478158A
CN116478158A CN202310462515.2A CN202310462515A CN116478158A CN 116478158 A CN116478158 A CN 116478158A CN 202310462515 A CN202310462515 A CN 202310462515A CN 116478158 A CN116478158 A CN 116478158A
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易荣楠
孙高飞
赵明明
陈威旭
吴智轩
肖梓彦
陈瑶清
黄娟娟
陈俊豪
易轩宇
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Hunan Police Academy
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    • C07D471/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
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Abstract

本发明涉及一种制备螺环化合物的方法,在保护气氛或真空条件下,将1,7‑烯炔类化合物、肟酯类化合物、马来酰亚胺类化合物、铜催化剂和溶剂混合,反应,获得杂多环化合物;其中,所述铜催化剂为碘化亚铜、氧化亚铜、氯化亚铜、溴化亚铜、三氟甲烷磺酸铜、硫酸铜中的一种或几种。本发明的方法以廉价易得的铜盐为促进剂,无需使用贵金属催化剂和配体,通过在一个锅中同时构建四个C‑C键和一个C≡N键来构建螺环衍生物,具有反应底物适用范围广泛、条件简单温和、较高的原子经济性等优点,具有较好的工业化应用前景。

Description

一种制备螺环化合物的方法
技术领域
本发明属于有机合成领域,涉及一种制备螺环化合物的方法,尤其涉及一种铜催化马来酰亚胺类化合物、1,7-烯炔类化合物和肟酯类化合物经自由基接力/1,5-氢原子转移实现1,2,2-三功能化构建螺环化合物的方法。
背景技术
烯烃的功能化近年来引起了广泛的关注,因为它可以很容易地获得分子复杂性的扩展,以设计所需的结构基元,从而在药物化学和功能材料中显示出巨大的应用潜力。由于碳碳双键上的加成易于控制,双功能化已被证明是众所周知的模型之一,这通常是通过过渡金属催化(Ni,Cu,Pd等)、氧化剂促进、或光/电氧化还原催化实现的。与双功能化相比,烯烃的三功能化还没有得到很好的研究,这可能一方面是由于起始底物的结构限制和控制区域选择性的障碍,另一方面是由于不同自由基精确有序地参与转化/或对反应位点的选择性调控受到限制。
发明内容
针对现有技术的不足,本发明的目的在于提供一种制备螺环化合物的方法,以由马来酰亚胺类化合物、1,7-烯炔类化合物和肟酯类化合物通过一锅反应构建螺环化合物。
为了解决上述技术问题,本发明的技术方案如下:
一种制备螺环化合物的方法,将1,7-烯炔类化合物、肟酯类化合物、马来酰亚胺类化合物、铜催化剂和溶剂混合,在保护气氛或真空条件下反应,获得杂多环化合物;
其中,所述铜催化剂为碘化亚铜、氧化亚铜、氯化亚铜、溴化亚铜、三氟甲烷磺酸铜、硫酸铜中的一种或几种。
进一步地,所述溶剂为1,2-二氯乙烷、乙酸乙酯中的一种或几种。
进一步地,控制反应温度为50-70℃。申请人研究发现,控制合适的反应温度,可获得较高的螺环化合物收率,反应温度过高、过低均不利于获得高的收率。
进一步地,控制反应时间为10-14h。
优选地,所述铜催化剂为碘化亚铜。申请人经过反复研究发现,当采用碘化亚铜作为铜催化剂时,有助于获得较高的螺环化合物收率。
进一步地,1,7-烯炔类化合物、肟酯类化合物、马来酰亚胺类化合物与溶剂的摩尔体积比为0.18-0.22mmol:0.28-0.32mmol:0.28-0.32mmol:0.5-2mL,铜催化剂的用量为15-25mol%(相对1,7-烯炔类化合物的摩尔用量而言)。
进一步地,所述保护气氛为氮气气氛。
进一步地,所述1,7-烯炔类化合物的化学式如式1所示:
所述肟酯类化合物的化学式如式2所示:
所述马来酰亚胺类化合物的化学式如式3所示:
所述螺环化合物的化学式如式I所示:
其中,R1选自甲基、氯或三氟甲基,R2选自取代或未取代的苯基、噻吩基或正丁基,R3选自甲基、苄基、烯丙基或对甲苯磺酰基,R4选自甲基、苄基;
Y=CH2或O,R5选自对三氟甲基苯基,R6选自氢、苯基或苄基;
选自N-烷基取代的马来酰亚胺或芳基取代的马来酰亚胺。
进一步地,式1所示的1,7-烯炔类化合物、式2所示的肟酯类化合物及式3所示的马来酰亚胺类化合物为原料,在铜催化剂存在下于溶剂1,2-二氯乙烷中发生反应获得螺环化合物,反应式如下:
进一步地,将反应完成后的反应液用乙酸乙酯萃取,获得有机相;再将有机相用无水硫酸钠干燥,过滤并蒸发去除乙酸乙酯后,获得混合物;然后,对所述混合物进行纯化,得到螺环化合物。
进一步地,反应过程中进行搅拌。
可选地,将混合物经柱层析分离,石油醚和乙酸乙酯的混合液作为洗脱剂,得到螺环化合物。
氢原子转移(HAT)策略在远端C-H功能化中具有优异的位点选择性,可以说是形成化学键最直接和有效的方法之一。其中,1,5-氢原子转移具有六元跃迁的几何结构和较低的焓值,是最有吸引力的过程之一。与传统的自由基串联反应相比,自由基中继策略在快速构建复杂分子结构、避免使用化学计量试剂以及在氧化还原中性条件下实现高原子和步骤经济方面具有显著优势。在这种情况下,本发明人发现,基于自由基接力的1,5-氢原子转移的发生对合成复杂有价值的有机化合物具有重要意义。本发明开发了在温和经济的铜催化体系下,烯烃通过自由基接力反应和1,5-氢原子转移反应在一个锅内进行的1,2,2-三官能化反应获得螺环化合物,为碳碳双键的原位三官能化提供了方便的途径。
本发明开发了一种基于温和铜催化体系下的自由基接力/1,5-氢原子转移过程构建螺环化合物的方法,该方法以廉价易得的铜盐为促进剂,无需使用贵金属催化剂和配体,通过在一个锅中同时构建四个C-C键和一个C≡N键来构建螺环衍生物。本发明的方法由于独特的底物设计和催化体系使得具有较高的化学选择性、广泛的底物范围以及较高的原子经济性。
本发明的方法具有反应底物适用范围广泛、条件简单温和、较高的原子经济性等优点,具有较好的工业化应用前景。
具体实施方式
以下将结合实施例来详细说明本发明。需要说明的是,在不冲突的情况下,本发明中的实施例及实施例中的特征可以相互组合。
下述实施例中所述实验方法,如无特殊说明,均为常规方法;所述试剂和原料,如无特殊说明,均可以从商业途径获得和/或根据已知的方法制备获得。
实施例1
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%,即式1a所示的1,7-烯炔的添加量的20%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-1(80%yield)。产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.29(t,J=3.2Hz,3H),7.20-7.16(m,3H),7.13-7.08(m,2H),7.03-6.92(m,3H),6.76-6.69(m,3H),4.74-4.53(m,2H),3.36(d,J=4.4Hz,3H),2.88-2.81(m,1H),2.59-2.41(m,1H),2.39-2.25(m,1H),2.21-2.10(m,2H),1.95-1.72(m,2H),1.61-1.52(m,2H),1.43(s,2H),1.30(s,1H);13C NMR(101MHz,CDCl3)δ:180.2,178.5,177.3,177.2,174.6,173.6,140.0,139.5,138.2,136.8,135.4,135.2,133.7,133.3,129.3(2),129.1,128.9,128.7,128.6,128.5,128.4,128.3,128.1(2),127.7,127.1,122.6,122.5,120.2,120.1,118.9,118.8,115.1,115.0,63.8,63.1,53.5,53.1,46.5,45.0,42.8,42.4,39.0,36.9,30.1,27.9,26.9,26.0,25.3,23.4,22.5,16.9;HRMS m/z(ESI)calcd for C34H31N3NaO3([M+Na]+)552.2258,found 552.2250.
实施例2
用Cu2O代替CuI,其余条件同实施例1,得到目标产物I-1的收率为31%。此时,原料回收率达28%
实施例3
用CuCl代替CuI,其余条件同实施例1,得到目标产物I-1的收率为63%。
实施例4
用CuBr代替CuI,其余条件同实施例1,得到目标产物I-1的收率为66%。
实施例5
用Cu(OTf)2代替CuI,其余条件同实施例1,得到目标产物I-1的收率为62%。
实施例6
用CuSO4代替CuI,其余条件同实施例1,得到目标产物I-1的收率为52%。
实施例7
用EtOAc代替DCE,其余条件同实施例1,得到目标产物I-1的收率为58%。
实施例8
用Toluene代替DCE,其余条件同实施例1,得到目标产物I-1的收率为32%。
实施例9
用DMF代替DCE,其余条件同实施例1,得到目标产物I-1的收率为28%。
由上述实施例1-9可以看出,最佳的反应条件为实施例1的反应条件,即催化剂CuI及溶剂DCE在60℃、氮气氛围条件下反应。在获得最佳反应条件的基础上,发明人进一步在该最佳反应条件下,选择不同取代基的1,7-烯炔类化合物与肟酯类化合物及马来酰亚胺类化合物为原料以发展经自由基接力/1,5-氢原子转移构建螺环化合物的方法
实施例10
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2b所示的肟酯(101.5mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-2(78%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.74-7.72(m,1H),7.56-7.53(m,1H),7.37-7.30(m,5H),7.24-7.20(m,2H),7.17-7.13(m,3H),7.07-7.01(m,3H),6.96-6.90(m,2H),6.75-6.68(m,2H),4.73(d,J=17.6Hz,1H),4.62(d,J=14.0Hz,1H),3.52-3.39(m,4H),2.91-2.87(m,1H),2.55-2.50(m,2H),2.46-2.34(m,2H),2.09-2.05(m,2H),1.50(s,0.5H),1.46(s,2.5H);13C NMR(101MHz,CDCl3)δ:180.0,179.8,177.7,177.5,175.3,174.7,140.0,139.9,136.2,135.4,133.1,131.9,131.1,129.3,129.2,129.1,129.0,128.8,128.7,128.5,128.4,128.1,128.0,127.9,127.8,127.7,127.4,127.2(2),122.6(2),120.3,118.3,118.0,115.1,115.0,63.3,53.7,53.4,52.6,42.7,42.5,39.6,39.2,33.6,32.8,30.1(2),29.7,29.3,26.2,26.0,25.1;HRMS m/z(ESI)calcd for C40H35N3NaO3([M+Na]+)628.2571,found 628.2561.
实施例11
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2c所示的肟酯(108.6mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-3(51%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.38-7.30(m,6H),7.25-7.14(m,5H),7.10-7.03(m,3H),6.95-6.92(m,1H),6.90-6.86(m,2H),6.76-6.73(m,2H),4.73-4.68(m,1H),4.62-4.59(m,1H),4.47(d,J=11.6Hz,1H),4.31(d,J=11.2Hz,1H),3.42(s,3H),2.99-2.95(m,1H),2.83(d,J=14.4Hz,1H),2.57-2.47(m,2H),2.08(d,J=14.4Hz,2H),1.84-1.77(m,2H),1.49(s,3H);13C NMR(101MHz,CDCl3)δ:180.1,177.8,174.6,140.4,140.0,136.9,136.1,135.5,133.7,131.1,129.3,129.0,128.9,128.7(2),128.5,128.3(2),128.0,127.8,122.5,120.3,117.0,115.0,72.3,71.5,63.5,53.5,42.6,41.4,39.5,32.2,26.2,23.4;HRMS m/z(ESI)calcd for C41H37N3NaO4([M+Na]+)658.2676,found658.2670.
实施例12
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2d所示的肟酯(78.6mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,将所得有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=3:1),得到目标产物I-4(75%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.39-7.35(m,4H),7.23-7.21(m,2H),7.20-7.15(m,2H),7.06-7.02(m,3H),6.75-6.69(m,3H),4.83-4.69(m,1H),4.66-4.62(m,1H),4.22-4.15(m,2H),3.94-3.91(m,2H),3.43(s,3H),2.95-2.87(m,1H),2.45-2.34(m,1H),2.18-2.05(m,1H),1.56(s,2H),1.38(s,1H);13C NMR(101MHz,CDCl3)δ:180.3,179.8,175.7,175.4,174.9,173.7,140.0,139.9,139.5,137.5,135.1,135.0,133.2,131.1,129.3,129.2,129.1,129.0,128.8,128.7,128.5,128.4(2),128.3,128.1,128.0(2),127.5,127.1,122.5,122.4,120.3,119.9,115.0,114.9,68.9,67.9,61.9,61.5,56.4,53.3,52.9,49.5,47.8,43.0,42.6,39.1,37.4,30.0,29.2,27.0,26.1;HRMS m/z(ESI)calcd for C33H29N3NaO4([M+Na]+)554.2050,found 554.2039.
实施例13
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3b所示的马来酰亚胺(54.3mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-5(75%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.37-7.31(m,4H),7.06(d,J=8.0Hz,1H),7.02-6.97(m,2H),6.82-6.76(m,2H),3.45(s,3H),3.43-3.40(m,1H),2.91(t,J=12.0Hz,1H),2.54(t,J=6.8Hz,1H),2.31-2.22(m,2H),2.11-2.07(m,1H),1.88-1.81(m,4H),1.71-1.60(m,6H),1.51(s,3H),1.29-1.24(m,4H);13C NMR(101MHz,CDCl3)δ:180.6,177.7,174.7,139.9,136.9,134.0,129.4,129.3(2),128.8,128.5,128.1,122.6,120.3,119.1,115.1,63.0,53.4,51.9,44.7,39.1,30.1,29.0,28.6,26.1,25.8,25.7,25.4,25.0,23.4,17.0;HRMS m/z(ESI)calcd for C33H35N3NaO3([M+Na]+)544.2571,found544.2561.
实施例14
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3c所示的马来酰亚胺(35.1mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-6(73%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.41-7.31(m,4H),7.09-7.01(m,3H),6.83-6.72(m,2H),3.45(s,3H),3.41-3.39(m,1H),2.92-2.85(m,1H),2.51-2.47(m,1H),2.28-2.16(m,2H),1.96-1.66(m,4H),1.60(s,9H),1.26(s,0.6H),1.20(s,2.4H);13CNMR(101MHz,CDCl3)δ:181.3,181.2,178.8,178.5,174.7,174.5,139.9,139.3,138.0,137.1,134.1,133.9,129.2(2),129.1,129.0,128.7,128.4,128.1,127.8,127.4,122.6,122.4,120.3,119.1,118.8,115.0,114.9,63.5,63.2,58.6,53.3,52.6,47.5,45.1,39.0,36.6,30.1,30.0,28.3,28.1,27.8,26.5,26.0,25.2,23.5,22.1,17.0;HRMS m/z(ESI)calcd for C31H33N3NaO3([M+Na]+)518.2414,found 518.2423.
实施例15
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3d所示的马来酰亚胺(32.5mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-7(78%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.37-7.28(m,4H),7.08-7.00(m,3H),6.81-6.74(m,2H),3.68-3.50(m,2H),3.45(s,2H),3.43(s,1H),3.27-3.19(m,1H),3.01-2.90(m,1H),2.61-2.49(m,1H),2.28-2.25(m,1H),2.15-2.09(m,1H),1.89-1.73(m,2H),1.71-1.56(m,2H),1.52(s,2H),1.39(s,1H),1.20(t,J=7.2Hz,3H);13C NMR(101MHz,CDCl3)δ:180.3,178.3,177.5,177.4,174.6,173.6,140.0,139.9,139.8,139.0,138.7,136.7,134.0,133.6,129.3,129.0(2),128.5,128.0,127.3,122.6,122.5,120.2,119.8,119.0,118.8,115.1,115.0,63.5,63.3,53.4,52.9,47.1,45.0,39.0,36.5,34.0,33.7,30.1,30.0,28.6,26.6,26.1,25.3,23.5,22.3,16.9,12.9,12.0;HRMS m/z(ESI)calcd forC29H29N3NaO3([M+Na]+)490.2101,found 490.2109.
实施例16
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3e所示的马来酰亚胺(31.2mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-8(76%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.36-7.31(m,3H),7.09-7.04(m,2H),7.02-6.99(m,2H),6.80-6.78(m,2H),3.45(s,3H),3.44-3.42(m,1H),3.05(s,3H),2.93-2.89(m,1H),2.63-2.58(m,1H),2.27-2.25(m,1H),2.19-2.13(m,1H),1.85-1.75(m,2H),1.67-1.58(m,2H),1.52(s,2.4H),1.39(s,0.6H);13C NMR(101MHz,CDCl3)δ:180.5,179.3,178.7,177.6,174.5,173.6,140.1,139.9,138.3,136.6,133.9,133.4,129.4,128.9,128.5,128.0,127.1,122.6,122.5,120.1,119.9,119.0,118.8,115.1,64.2,63.5,53.4,53.0,46.9,45.1,38.9,36.4,30.1,28.1,26.8,26.1,25.3(2),24.6,23.4,22.5,16.9;HRMS m/z(ESI)calcd for C28H27N3NaO3([M+Na]+)476.1945,found 476.1938.
实施例17
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3f所示的马来酰亚胺(29.8mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-9(64%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:8.63(s,0.7H),8.37(s,0.3H),7.38-7.34(m,3H),7.25-7.20(m,1H),7.14-7.01(m,3H),6.82-6.73(m,2H),3.45(s,2H),3.43(s,1H),2.99-2.92(m,1.3H),2.70(t,J=7.2Hz,0.7H),2.52-2.48(m,1H),2.28-2.20(m,2H),1.95-1.84(m,2H),1.76-1.53(m,2H),1.50(s,2H),1.37(s,1H);13C NMR(101MHz,CDCl3)δ:180.5,178.8,177.7,177.6,174.6,173.6,140.5,139.9,139.6,137.7,136.0,133.9,133.5,129.4,129.3,129.1,128.6(2),128.1,127.1,122.7,122.6,120.1(2),119.0,118.9,115.1(2),65.4,64.8,53.5,53.1,47.4,45.9,39.1,36.9,30.2,30.1,27.4,26.9,26.0,24.8,23.4,22.8,17.1,16.9;HRMS m/z(ESI)calcd for C27H25N3NaO3([M+Na]+)462.1788,found 462.1780.
实施例18
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3g所示的马来酰亚胺(52.1mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-10(62%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.43(t,J=8.0Hz,2H),7.35(d,J=7.2Hz,1H),7.33-7.31(m,3H),7.22-7.16(m,4H),7.11-7.04(m,2H),6.69(t,J=18.0Hz,2H),3.39(s,2.6H),3.36(s,0.4H),2.96(d,J=14.4Hz,1H),2.73(t,J=7.2Hz,1H),2.30-2.25(m,1H),2.24-2.17(m,2H),1.92-1.74(m,2H),1.71-1.57(m,2H),1.47(s,2.6H),1.37(s,0.4H);13C NMR(101MHz,CDCl3)δ:179.4,177.6,176.5,174.6,173.9,140.5,140.0,139.9,139.3,136.5,134.0,133.7,131.8,131.3,129.5(2),129.3,129.2,129.1,128.9,128.7,128.6,128.1,126.4,126.2,122.7,122.6,120.2,119.0,118.8,115.1,64.0,63.7,53.6,53.0,47.7,45.4,39.1,36.6,30.1,29.3,26.6,26.2,25.6,23.5,22.6,17.0,14.1;HRMS m/z(ESI)calcd for C33H29N3NaO3([M+Na]+)538.2101,found 538.2108.
实施例19
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(58.9mg,0.3mmol)、式3h所示的马来酰亚胺(75.8mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-11(64%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.64-7.59(m,2H),7.39-7.36(m,4H),7.21-7.17(m,2H),7.11-7.06(m,3H),6.81-6.79(m,2H),3.46(s,3H),3.44-3.42(m,1H),3.04-3.00(m,1H),2.80(t,J=7.2Hz,1H),2.30-2.26(m,2H),1.94-1.83(m,2H),1.68-1.61(m,2H),1.53(s,2.5H),1.43(s,0.5H);13C NMR(101MHz,CDCl3)δ:179.1,178.6,176.3,176.1,174.4,173.4,140.6,140.0,139.9,139.4,138.3,136.2,133.8,133.6,132.3,132.1,130.7,129.7,129.5,129.3,129.0,128.7,128.0,127.9,127.7(2),127.4,122.7,122.5,120.0,119.5,118.9,118.7,115.1,64.0,63.8,53.5,52.9,47.7,45.4,39.0,30.1,30.0,26.6,26.2,25.5,23.4,22.2,17.0;HRMS m/z(ESI)calcd for C33H28BrN3NaO3([M+Na]+)616.1206,found 616.1215.
实施例20
向Schlenk瓶中加入式1a所示的1,7-烯炔(56.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3i所示的马来酰亚胺(82.7mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-12(58%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.71(d,J=8.4Hz,1H),7.61-7.57(m,1H),7.48-7.45(m,3H),7.41-7.35(m,7H),7.15-7.02(m,6H),6.88(t,J=4.0Hz,2H),6.81-6.79(m,2H),3.46(s,5.4H),3.43(s,0.6H),3.04-2.99(m,2H),2.82-2.78(m,2H),2.33-2.23(m,6H),1.95-1.78(m,4H),1.72-1.58(m,4H),1.54(s,6H);13C NMR(101MHz,CDCl3)δ:179.0,177.3,176.1,174.5,168.9,140.5,140.0,136.5,134.3,133.7,132.3,132.0,129.6,129.5(2),129.0,128.8,128.0,127.8,125.6,125.5,125.1,123.3,123.1,122.7,120.1,119.0,115.1,64.0,63.7,53.5,53.0,47.6,45.5,39.0,30.1,29.7,29.3,26.1,25.7,23.4,22.6,17.0,14.1;HRMS m/z(ESI)calcd for C60H52N6NaO6([M+Na]+)975.3841,found 975.3831.
实施例21
向Schlenk瓶中加入式1b所示的1,7-烯炔(59.4mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-13(81%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.40-7.33(m,5H),7.26-7.20(m,1H),7.15(t,J=7.6Hz,2H),7.07-7.00(m,2H),6.95-6.91(m,1H),6.83-6.80(m,1H),6.59-6.52(m,1H),4.76(d,J=14.0Hz,1H),4.66(d,J=10.4Hz,1H),3.41(s,3H),3.40-3.37(m,1H),2.87(t,J=10.8Hz,1H),2.60(t,J=7.2Hz,1H),2.26-2.18(m,2H),2.00(s,3H),1.79-1.71(m,2H)1.60-1.53(m,2H),1.50(s,2.5H),1.47(s,0.5H);13C NMR(101MHz,CDCl3)δ:180.2,179.8,177.2,176.7,174.5,174.3,140.2,139.7,137.6,137.4,136.4,135.4,135.2,133.7,133.3,132.0,130.0,129.9,129.3,129.1,128.9,128.7,128.6(2),128.5,128.3(2),128.2,128.0,120.0,119.9,119.0,118.8,114.9,114.8,63.0,62.4,53.5,53.1,46.1,45.0,42.7,42.4,38.9,30.1,28.6,27.9,26.9,26.0,25.3,23.4,22.7,20.4,17.0,16.9;HRMS m/z(ESI)calcd for C35H33N3NaO3([M+Na]+)566.2414,found 566.2403.
实施例22
向Schlenk瓶中加入式1c所示的1,7-烯炔(58.6mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-14(79%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.39-7.34(m,5H),7.23-7.18(m,2H),7.15-7.10(m,1H),7.06-7.00(m,1H),6.86-6.81(m,2H),6.69-6.65(m,1H),6.60-6.56(m,1H),4.73-4.64(m,2H),3.43(s,3H),3.41-3.37(m,1H),2.86(t,J=12.4Hz,1H),2.64-2.56(m,1H),2.33(s,2H),2.29(s,1H),2.25-2.17(m,2H),1.81-1.71(m,2H),1.62-1.54(m,2H),1.50(s,2H),1.37(s,1H);13C NMR(101MHz,CDCl3)δ:180.2,179.8,177.4,177.2,175.1,174.7,140.0,139.9,139.6,139.4,135.7,135.4,133.8,129.4,129.2,129.1,128.9(2),128.7,128.6,128.5,128.3,128.0,127.9,127.8,127.7,126.9,123.4,123.2,119.0,117.4,115.8,63.7,63.0,53.6,53.1,46.7,45.0,42.7,42.4,38.9,36.9,30.1,28.0,27.0,26.1,25.3,23.4,22.7,22.5,21.8,16.9;HRMS m/z(ESI)calcd for C35H33N3NaO3([M+Na]+)566.2414,found566.2404.
实施例23
向Schlenk瓶中加入式1d所示的1,7-烯炔(61.2mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-15(64%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.38-7.32(m,5H),7.29(t,J=7.2Hz,1H),7.22-7.16(m,3H),7.00-6.97(m,1H),6.81-6.75(m,2H),6.69(d,J=2.4Hz,1H),4.77-4.64(m,2H),3.42(s,3H),2.88(d,J=14.4Hz,1H),2.64-2.57(m,1H),2.27-2.21(m,2H),2.10(d,J=14.4Hz,1H),1.91-1.80(m,2H),1.66-1.58(m,2H),1.51(s,3H);13C NMR(101MHz,CDCl3)δ:179.8,177.1,174.3,138.6(2),138.4,135.3,132.9,131.1,129.4,129.1,128.8,128.7(2),128.1,127.9,127.7,121.6,118.9,116.3,63.1,53.3,44.6,42.8,39.4,30.2,26.8,25.4,23.4,17.6;HRMS m/z(ESI)calcd for C34H30ClN3NaO3([M+Na]+)586.1868,found 586.1874.
实施例24
向Schlenk瓶中加入式1e所示的1,7-烯炔(62.3mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-16(68%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.68-7.64(m,0.4H),7.51-7.44(m,0.6H),7.21-7.19(m,2H),7.17-7.09(m,4H),7.02-6.98(m,1H),6.95-6.84(m,3H),6.70-6.60(m,2H),4.42-4.19(m,2H),3.34(s,1.8H),3.32(s,1.2H),3.16-3.05(m,1H),2.97-2.76(m,1H),2.70-2.54(m,1H),2.42-2.27(m,2H),1.68-1.53(m,2H),1.35-1.27(m,2H),1.18(s,3H);13C NMR(101MHz,CDCl3)δ:178.4,178.0,177.2,176.5,175.7,173.4,140.8,138.9,138.4,135.1,134.9,134.7,132.9,131.8,131.1,129.9,129.2,129.1,129.0,128.9,128.8(2),128.7(2),128.6,128.5,128.4,128.3,128.1,128.0,127.7,122.5,118.8,118.5,115.4,63.7,63.0,53.7,53.0,52.6,46.4,45.2,42.4,36.9,31.7,30.2,29.2,28.6,27.9,27.0,22.9,22.5,17.0;HRMS m/z(ESI)calcd for C34H30ClN3NaO3([M+Na]+)586.1868,found 586.1876.
实施例25
向Schlenk瓶中加入式1f所示的1,7-烯炔(69.5mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-17(63%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.58-7.43(m,2H),7.38-7.34(m,3H),7.30-7.24(m,2H),7.20-7.10(m,3H),7.08-7.03(m,1H),7.00-6.96(m,1H),6.88-6.78(m,1H),4.75-4.65(m,1H),4.51-4.34(m,1H),3.46(s,3H),2.99-2.89(m,1H),2.65-2.61(m,1H),2.50-2.36(m,1H),2.33-2.21(m,2H),1.92-1.77(m,2H),1.56-1.50(m,2H),1.38(s,1H),1.25(s,2H);13C NMR(101MHz,CDCl3)δ:179.8,178.3,177.1,177.0,174.6,173.5,142.5,142.2,140.3,139.0,138.4,138.1,135.3,135.0,132.6,132.3,131.8,131.1,129.5,129.1,129.0(2),128.9,128.7(q,JC-F=2.9Hz),128.5,128.3,128.1,126.1(q,JC-F=3.5Hz),125.2(q,JC-F=3.8Hz),120.3,118.9,118.8,115.1,115.0,63.7,63.0,53.7,53.3,52.9,52.6,46.3,45.0,42.8,39.0,36.9,30.3,29.2,27.0,26.0,25.4,23.3,22.6,17.0,16.9;19F NMR(377MHz,CDCl3)δ:-62.8;HRMS m/z(ESI)calcd for C35H30F3N3NaO3([M+Na]+)620.2131,found 620.2121.
实施例26
向Schlenk瓶中加入式1g所示的1,7-烯炔(76.3mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-18(71%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.69-7.64(m,2H),7.50-7.46(m,2H),7.38-7.28(m,1H),7.23-7.16(m,2H),7.15-7.11(m,2H),7.01-6.98(m,1H),6.84-6.61(m,3H),4.71-4.53(m,1H),4.33-4.31(m,1H),3.85(s,6H),3.71-3.70(m,1H),3.36-3.34(m,1H),2.89-2.76(m,1H),2.39-2.29(m,2H),1.79-1.68(m,2H),1.54-1.45(m,2H),1.29(s,1H),1.18(s,2H);13C NMR(101MHz,CDCl3)δ:178.7,177.5,175.5,173.7,168.1,159.4,139.7,139.4,138.2,135.1,131.9,131.1,130.2,129.2,128.8(2),128.7,128.4,128.0,127.7,127.2,125.1,122.5,120.2,118.8,115.0,114.3,63.7,55.0,52.9,52.7,46.7,42.5,39.0,36.8,34.4,30.5,30.1,28.1,26.9,22.8,22.5,17.0(2);HRMS m/z(ESI)calcdfor C35H33N3NaO4([M+Na]+)582.2363,found 582.2355.
实施例27
向Schlenk瓶中加入式1h所示的1,7-烯炔(67.5mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-19(79%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.30-7.28(m,3H),7.22-7.06(m,3H),7.04-6.94(m,2H),6.89-6.87(m,1H),6.84-6.75(m,1H),6.73-6.63(m,3H),4.70-4.57(m,1.4H),4.31-4.23(m,0.7H),3.36(s,3H),2.87-2.79(m,1H),2.60-2.53(m,1H),2.51-2.46(m,2H),2.33(t,J=18.0Hz,1H),2.17-2.10(m,2H),1.92-1.60(m,4H),1.52-1.48(m,2H),1.42(s,2H),1.29-1.26(m,2H),1.18(s,1H),0.87(t,J=7.2Hz,3H);13C NMR(101MHz,CDCl3)δ:180.2,178.7,177.4,177.3,174.7,173.6,143.2,139.9,139.5,138.4,136.9,135.4,135.2,131.8,131.1,130.6,129.2,128.9(2),128.8,128.7,128.6,128.4,128.3,128.1,128.0,122.5,120.3,119.0,115.0,63.8,63.1,53.7,53.4,53.0,52.6,46.5,44.9,42.7,42.3,38.9,35.3,33.2,30.1,29.2,26.9,26.0,25.3,23.3,22.5,22.3(2),17.0,16.9,13.9;HRMS m/z(ESI)calcd for C38H39N3NaO3([M+Na]+)608.2884,found 608.2875.
实施例28
向Schlenk瓶中加入式1i所示的1,7-烯炔(72.9mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-20(63%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.37(s,2H),7.31-7.28(m,1H),7.22-7.18(m,3H),7.07-6.97(m,4H),6.84-6.77(m,1H),6.71-6.67(m,2H),4.80-4.63(m,1H),4.41-4.31(m,1H),3.43(s,1.5H),3.41(s,1.5H),3.40-3.37(m,1H),2.95-2.88(m,1H),2.55-2.44(m,1H),2.38-2.21(m,2H),1.95-1.80(m,2H),1.78-1.62(m,2H),1.49(s,1.5H),1.37(s,1.5H);13C NMR(101MHz,CDCl3)δ:180.0,178.4,177.2,176.9,174.4,173.4,140.8,140.0,138.9,138.5,135.4,135.1,135.0,132.9,132.5,132.1,130.6,129.6,129.0,128.9,128.8,128.7,128.5,128.3,127.7,122.7,122.5,119.8,118.8,118.5,115.4,115.2,63.7,62.9,53.6,53.0,46.4,45.2,42.8,42.4,38.9,36.9,30.1,27.9,27.0,26.0,25.4,23.4,22.5,17.0;HRMS m/z(ESI)calcd for C34H30BrN3NaO3([M+Na]+)630.1363,found 630.1354.
实施例29
向Schlenk瓶中加入式1j所示的1,7-烯炔(56.9mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-21(63%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.39-7.33(m,6H),7.30-7.28(m,2H),7.06-7.02(m,2H),6.89-6.85(m,2H),4.77-4.65(m,2H),3.43(s,2.7H),3.42(s,0.3H),3.23-3.13(m,1H),2.93-2.88(m,1H),2.72-2.68(m,1H),2.46-2.31(m,2H),1.83-1.77(m,2H),1.64-1.56(m,2H),1.48(s,3H);13C NMR(101MHz,CDCl3)δ:180.1,179.7,177.4,177.2,174.3,174.2,142.6,140.0,135.4,133.7,129.8,129.7,129.5,129.3,128.7(2),128.6,128.5,128.1,127.9,127.7,127.6,127.2,127.1,122.7,122.6,119.9,119.0,118.8,115.2,115.1,63.6,63.4,53.7,53.3,46.7,45.3,43.3,42.8,39.1,38.5,30.1,29.6,26.2,25.4,23.4,22.6,17.0,14.1;HRMS m/z(ESI)calcd for C32H29N3NaO3S([M+Na]+)558.1822,found 558.1814.
实施例30
向Schlenk瓶中加入式1k所示的1,7-烯炔(53.7mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=3:1),得到目标产物I-22(70%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.41-7.36(m,4H),7.33-7.29(m,3H),7.15-7.07(m,2H),4.72-4.65(m,2H),3.38(s,3H),2.86(t,J=7.2Hz,1H),2.81(t,J=7.2Hz,1H),2.43-2.36(m,3H),1.95-1.91(m,2H),1.66-1.51(m,2H),1.34(s,3H),1.31-1.08(m,6H),0.79(t,J=7.2Hz,3H);13C NMR(101MHz,CDCl3)δ:180.3,177.5,175.0,139.6,138.4,137.6,135.4,129.0,128.7,128.1,127.2,122.9,122.0,121.4,118.9,115.1,61.9,52.9,45.1,42.7,38.7,30.8,30.1,26.1,26.0,25.5,23.5,23.0,17.1,13.6;HRMS m/z(ESI)calcd for C32H35N3NaO3([M+Na]+)532.2571,found 532.2563.
实施例31
向Schlenk瓶中加入式1l所示的1,7-烯炔(70.0mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-23(62%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.38-7.32(m,7H),7.21-7.17(m,3H),7.12-7.01(m,4H),6.95-6.77(m,4H),6.74-6.70(m,1H),5.65(d,J=16.0Hz,1H),4.80(d,J=8.8Hz,1H),4.76(d,J=6.4Hz,1H),4.67(d,J=14.0Hz,1H),2.96(t,J=6.8Hz,1H),2.67-2.60(m,1H),2.48-2.36(m,1H),2.25-2.17(m,2H),1.85-1.75(m,2H),1.64(s,2H),1.62-1.58(m,2H),1.51(s,1H);13C NMR(101MHz,CDCl3)δ:180.2,178.6,177.4,177.2,174.8,173.8,139.9,139.6,139.5,139.1,138.4,137.0,136.9,135.4,135.2,133.7,133.3,129.4,129.3,129.2,128.9(2),128.8,128.7(2),128.6,128.5,128.3,128.2,128.1,127.7,127.2,127.1,126.2,126.0,122.8,122.6,120.4,118.9,118.8,115.9,115.8,63.9,63.1,53.7,53.3,46.7,46.4,45.0,42.8,42.4,38.8,36.9,29.7,27.7,27.0,26.1,25.3,23.4,22.7,17.0,16.9;HRMS m/z(ESI)calcd for C40H35N3NaO3([M+Na]+)628.2571,found 628.2562.
实施例32
向Schlenk瓶中加入式1m所示的1,7-烯炔(68.6mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-24(72%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.38-7.34(m,4H),7.21-7.12(m,4H),7.10-6.98(m,3H),6.84-6.79(m,2H),6.73(t,J=8.0Hz,1H),5.96-5.88(m,1H),5.23-5.15(m,2H),5.01-4.93(m,1H),4.79-4.63(m,2H),4.28-4.20(m,1H),2.96-2.91(m,1H),2.66-2.58(m,1H),2.49-2.27(m,1H),2.26-2.17(m,2H),1.80-1.70(m,2H),1.66-1.58(m,2H),1.56(s,2H),1.42(s,1H);13C NMR(101MHz,CDCl3)δ:180.2,178.5,177.3,177.2,174.2,173.2,139.9,139.3,139.0,138.2,136.9,135.4,135.1,133.6,132.3,132.2,129.3,129.1,128.9,128.7,128.6,128.5,128.4,128.3,128.1(2),127.7,127.1,122.7,122.5,120.3,120.2,118.9,118.8,116.0,115.7,115.6,63.8,63.1,53.5,53.1,46.4,45.3,45.0,42.8,42.4,38.8,36.8,27.7,26.9,26.0,25.3,23.3,22.6,17.0,16.9;HRMS m/z(ESI)calcd for C36H33N3NaO3([M+Na]+)578.2414,found 578.2406.
实施例33
向Schlenk瓶中加入式1n所示的1,7-烯炔(85.3mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-25(57%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.98(d,J=8.4Hz,1.4H),7.88(d,J=8.4Hz,0.6H),7.78-7.74(m,1H),7.40-7.34(m,7H),7.32-7.30(m,2H),7.22-7.19(m,1H),7.15(t,J=7.6Hz,1H),7.02-6.97(m,2H),6.82-6.79(m,2H),4.81-4.66(m,0.6H),4.65-4.55(m,1.4H),2.76-2.71(m,1H),2.47(s,3H),2.40-2.33(m,2H),2.24-2.15(m,2H),1.76-1.58(m,2H),1.49-1.40(m,2H),1.33(s,3H);13C NMR(101MHz,CDCl3)δ:179.7,177.4,176.9,176.8,175.3,145.1,144.9,138.7,138.4,138.2,136.9,136.2,135.3,135.2,135.1,134.6,132.5,130.5,129.5,129.3,129.1,128.9,128.8,128.6,128.5,128.4,128.2(2),127.9,127.5,127.0,126.3,126.1,125.5,125.4,124.4,123.7(2),123.6,118.8(2),64.0,63.0,56.7,55.9,45.8,45.1,42.9,42.4,38.7,37.2,36.7,29.7,27.2,25.3,25.0,24.3,22.7,21.7,17.0,16.8;HRMS m/z(ESI)calcd for C40H35N3NaO5S([M+Na]+)692.2190,found 692.2181.
实施例34
向Schlenk瓶中加入式1o所示的1,7-烯炔(70.7mg,0.2mmol)、式2a所示的肟酯(78.1mg,0.3mmol)、式3a所示的马来酰亚胺(58.9mg,0.3mmol)、CuI(7.6mg,20mol%),再加入1,2-二氯乙烷(1.0mL),然后将反应器在60℃、氮气氛围条件下搅拌,经TLC监测反应进程至原料消失(反应时间为12小时),反应完成后,将反应液用乙酸乙酯萃取,有机相用无水硫酸钠干燥,过滤并减压浓缩除去溶剂,将残余物经柱层析分离(洗脱溶剂为:石油醚/乙酸乙酯=2:1),得到目标产物I-26(70%yield)。
产物结构表征数据为:1H NMR(400MHz,CDCl3)δ:7.41-7.33(m,4H),7.24-7.18(m,8H),7.14-7.09(m,4H),7.02-6.97(m,1H),6.81-6.76(m,1H),6.61(t,J=7.6Hz,1H),4.48-4.46(m,2H),3.52-3.48(m,2H),3.44(s,1H),3.43(s,2H),2.76-2.57(m,1H),2.27-2.20(m,4H),1.77-1.72(m,2H),1.30-1.23(m,2H);13C NMR(101MHz,CDCl3)δ:178.1,178.0,177.8(2),172.4,172.2,139.7,139.2,138.9,138.3(2),137.4,137.2,135.5,135.2,134.0,133.8,132.0,131.9,131.0,130.6,130.3,129.9,128.8,128.7,128.6,128.4(2),128.2(2),127.9,127.5,127.0,126.8,126.4,126.3,122.9,122.7,122.5(2),118.9,118.8,115.1,114.6(2),64.2,58.6,46.7,46.4,46.3,45.9,42.3,41.9,36.9,36.8,36.3,30.6,30.0,29.4,27.1,22.1,21.9,17.1,17.0;HRMS m/z(ESI)calcd for C40H35N3NaO3([M+Na]+)628.2571,found 628.2562.
实施例35控制实验
本申请人对本发明的反应机理继续了实验探究,参见式二十八,当将2,2,6,6-四甲基哌啶氧化物(TEMPO)或2,6-二叔丁基-4-甲基苯酚(BHT)引入实施例1所述的反应体系时,抑制了1,2,2-三功能化产生螺环化合物,这表明自由基途径可能参与了该反应。
由此可知,本发明的可能的反应机理可以推导如式二十九所示:
以上所述实施例仅为本发明的优选实施例,而并非本发明可行实施的穷举。对于本领域技术人员而言,在不背离本发明原理和精神的前提下,对其所作出的任何显而易见的改动,都应当被认为包含在本发明的权利要求保护范围之内。

Claims (10)

1.一种制备螺环化合物的方法,其特征在于,将1,7-烯炔类化合物、肟酯类化合物、马来酰亚胺类化合物、铜催化剂和溶剂混合,在保护气氛或真空条件下反应,获得杂多环化合物;
其中,所述铜催化剂为碘化亚铜、氧化亚铜、氯化亚铜、溴化亚铜、三氟甲烷磺酸铜、硫酸铜中的一种或几种。
2.根据权利要求1所述的方法,所述溶剂为1,2-二氯乙烷、乙酸乙酯中的一种或几种。
3.根据权利要求1所述的方法,其特征在于,控制反应温度为50-70℃。
4.根据权利要求1所述的方法,其特征在于,控制反应时间为10-14h。
5.根据权利要求1所述的方法,其特征在于,所述铜催化剂为碘化亚铜。
6.根据权利要求1所述的方法,其特征在于,1,7-烯炔类化合物、肟酯类化合物、马来酰亚胺类化合物与溶剂的摩尔体积比为0.18-0.22mmol:0.28-0.32mmol:0.28-0.32mmol:0.5-2mL,铜催化剂的用量为15-25mol%。
7.根据权利要求1所述的方法,其特征在于,所述保护气氛为氮气气氛。
8.根据权利要求1所述的方法,其特征在于,反应过程中进行搅拌。
9.根据权利要求1-8任一项所述的方法,其特征在于,所述1,7-烯炔类化合物的化学式如式1所示:
所述肟酯类化合物的化学式如式2所示:
所述马来酰亚胺类化合物的化学式如式3所示:
所述螺环化合物的化学式如式I所示:
其中,R1选自甲基、氯或三氟甲基,R2选自取代或未取代的苯基、噻吩基或正丁基,R3选自甲基、苄基、烯丙基或对甲苯磺酰基,R4选自甲基、苄基;
Y=CH2或O,R5选自对三氟甲基苯基,R6选自氢、苯基或苄基;
选自N-烷基取代的马来酰亚胺或芳基取代的马来酰亚胺。
10.根据权利要求1-8任一项所述的方法,其特征在于,将反应完成后的反应液用乙酸乙酯萃取,获得有机相;再将有机相用无水硫酸钠干燥,过滤并蒸发去除乙酸乙酯后,获得混合物;然后,对所述混合物进行纯化,得到螺环化合物。
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