CN110511184B - 一种六并五并六芴类衍生物的合成方法 - Google Patents

一种六并五并六芴类衍生物的合成方法 Download PDF

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CN110511184B
CN110511184B CN201910727008.0A CN201910727008A CN110511184B CN 110511184 B CN110511184 B CN 110511184B CN 201910727008 A CN201910727008 A CN 201910727008A CN 110511184 B CN110511184 B CN 110511184B
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刘会
迟晓晨
孟龙
董云会
刘青
张道鹏
孙曦
曹成强
李新进
孙丰钢
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Shandong University of Technology
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Abstract

本发明公开了一种六并五并六芴类衍生物合成方法,以(Z)‑1‑碘‑1‑芳基‑1,6‑二烯类化合物为原料,在金属钯催化剂作用下,经分子内Heck环化,芳基C‑H键活化,制备一系列六并五并六芴类衍生物。本发明反应条件温和,原料易制,反应操作简单,产率较高,为多元杂环化合物“一锅法”合成提供新的方法。

Description

一种六并五并六芴类衍生物的合成方法
技术领域
本发明具体涉及一种六并五并六芴类衍生物的合成方法,属于有机化合物工艺应用技术领域。
背景技术
六并五并六稠环类化合物是一类芴类化合物,芴类化合物在各种医药分子和天然生物分子中广泛分布。首先利用烯基碘与金属钯的氧化加成可以实现烷基碘钯键的构建,随后发生分子内He环化形成四氢吡啶环状化合物中间体。其次,杂环环状化合物中间体在碱与金属钯的协同作用下活化芳基C-H键形成不多见得六元金属环。最后,经过金属Pd(II)还原消除成Pd(0)在反应体系中继续催化循环。利用芳基卤化物“一锅法”合成多元化合物已经很成熟,但是利用烯基碘化物合成多元稠环化合物还没有被报道过,而且该反应在低温60℃下可以顺利进行,反应步骤简单、原料容易制备、产率高而且耗能低,及其符合原子经济性和绿色合成化学。该方法为多元氮杂环类化合物合成提供了全新的方法。
发明内容
本次发明首次提出了一种简单高效制备六并五并六芴类衍生物的全新合成方法,利用金属钯作为催化剂,三苯基膦为配体,无机碱为碱,可以快速高效的实现六并五并六芴类衍生物的合成。
Figure GDA0003844133190000011
如以上式(1)所示,本发明利用(Z)-1-碘-1-芳基-1,6-二烯类化合物(1)为反应原料,在金属钯催化剂的作用下,在反应溶剂体系中进行反应,合成六并五并六芴类衍生物(2)。
本发明中,其中R1是乙基、正丁基、苯基;R2是甲基、苯基;R3是氢、正丁基、氯、甲氧基、甲基。
本发明中,R1,R2不仅仅局限于上述基团,例如,R1,R2还可以是更多烷烃和芳烃取代基;R3不仅仅局限于上述基团,例如R3还可以是各种烷烃等取代基。
本发明中,所述钯催化剂是醋酸钯、二(三苯基膦)二氯化钯、二(苯甲腈)二氯化钯、四(三苯基膦)钯。
优选地,所述钯催化剂是醋酸钯。
所述催化剂的用量为原料1用量的10-15mol%。
优选地,所述催化剂的用量为10mol%当量。
本发明中,所述配体是三苯基膦(PPh3)、2,2'-联吡啶、4,4'-二甲氧基-2,2'-联吡啶。
优选地,所述配体是三苯基膦。
所述配体用量为原料1用量的20mol%当量。
本发明中,所述反应溶剂体系是混合溶剂甲苯与乙腈。
优选地,是在甲苯:乙腈=1:1中进行反应,甲苯1.5mL,乙腈1.5mL。
本发明中,所述反应碱是氟化铯(CsF)、三乙胺(TEA)、碳酸铯(CsCO3)、碳酸钾(K2CO3)、叔丁醇钾(t-BuOK)。
优选地,所述碱是氟化铯。
所述碱的用量为原料1用量的3.0当量。
本发明中,所述合成反应是在60℃、80℃、130℃温度下进行。
优选地,是在60℃温度下进行反应。
本发明中,所述合成反应时间是3~10小时。
优选的,是反应5小时。
具体地,本发明合成反应是在氮气环境下向反应管A中,加入醋酸钯(X mol%)、三苯基膦(Y mol%)、氟化铯(Z mol%),然后将(Z)-1-碘-1-芳基-1,6-二烯类化合物(1,Wmmol)溶于溶剂(V mL)加入反应管中,最后加入溶剂(U mL)。60℃反应5小时。用TLC检测反应进程。反应完毕后,加硅胶旋干,柱层析,分离得到目标产物2。
本发明合成反应的优点包括:本发明合成方法中所使用到的原料合成简单方便,所用到的基础药品都廉价易得,并且所用的各种金属催化剂和配体都是商品催化剂可以商业购买。
合成的六并五并六芴类衍生物是一种重要的杂多元稠环化合物,杂多元稠环状化合物在医药行业以及精细化学品中是一类应用非常广泛的中间体,广泛存在于天然产物和医药中间体中,有极大的潜在应用价值,并且在室温干燥环境下稳定不变质,完全适用于大规模生产。
与此同时,该方法属于过渡金属催化的串联反应,首先发生C-I键和零价钯的氧化加成,然后进行分子内Heck环化和芳基C-H键活化,实现氮杂多元环状化合物的合成,对该方法鲜有报道并且该方法对绿色化学提供了解决方案,尤其体现在农业化学和制药工业中,利用廉价易得的小分子合成工业所需的复杂分子,操作方法比较简单,反应条件温和,反应速率快,而且实验安全性高,同时减少反应过程中保护基团的使用,降低了工艺的繁琐性。
附图说明
图1是合成六并五并六芴类衍生物化学反应方程式的示意图。
图2是实施例1的化学反应方程式的示意图。
图3是实施例2的化学反应方程式的示意图。
图4是实施例3的化学反应方程式的示意图。
图5是实施例4的化学反应方程式的示意图。
图6是实施例5的化学反应方程式的示意图。
图7是实施例6的化学反应方程式的示意图。
图8是实施例7的化学反应方程式的示意图。
图9是实施例8的化学反应方程式的示意图。
图10是实施例9的化学反应方程式的示意图。
图11是实施例10的化学反应方程式的示意图。
图12是实施例11的化学反应方程式的示意图。
图13是实施例12的化学反应方程式的示意图。
图14是实施例13的化学反应方程式的示意图。
图15是实施例14的化学反应方程式的示意图。
图16是实施例15的化学反应方程式的示意图。
图17是实施例16的化学反应方程式的示意图。
图18是实施例17的化学反应方程式的示意图。
图19是实施例18的化学反应方程式的示意图。
具体实施方式
结合以下具体实施例,对本发明作进一步的详细说明,本发明的保护内容不局限于以下实施例。在不背离发明构思的精神和范围下,本领域技术人员能够想到的变化和优点都被包括在本发明中,并且以所附的权利要求书为保护范围。实施本发明的过程、条件、试剂、实验方法等,除以下专门提及的内容之外,均为本领域的普遍知识和公知常识,本发明没有特别限制内容。以下实施例所给出的数据包括具体操作和反应条件及产物。产物纯度及异构体比例通过核磁鉴定。
实施例1
2a:
Figure GDA0003844133190000041
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),三乙胺(91.1mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(75%)。
1H NMR(400MHz,CDCl3,δppm):7.73(d,J=8Hz,2H),7.39-7.33(m,3H),7.25-7.14f(m,3H),4.23(d,J=10.8Hz,1H),3.08(d,J=16.4Hz,1H),2.67(t,J=14.8Hz,2H),2.54-2.43(m,5H),2.01-1.92(m,1H),1.21(s,3H),1.15(t,J=7.6Hz,3H).
13C NMR(101MHz,CDCl3,δppm):143.4,143.3,139.3,138.7,133.4,129.6,127.6,127.5,127.3,126.4,125.4,124.2,53.5,47.4,44.3,42.8,25.1,23.5,21.4,13.2.
MS(EI)m/z 367(M+);HRMS(ESI)Calcd for C22H25NO2S+H 368.5150,Found368.5153.
实施例2
2a:
Figure GDA0003844133190000042
氮气环境下在25mL的试管反应器中加入二(三苯基膦)二氯化钯(21.1mg,0.03mmol),PPh3(15.7mg,0.06mmol),三乙胺(91.1mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(36%)。分析数据同实施例1。
实施例3
2a:
Figure GDA0003844133190000051
氮气环境下在25mL的试管反应器中加入四(三苯基膦)钯(34.7mg,0.03mmol),PPh3(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(50%)。分析数据同实施例1。
实施例4
2a:
Figure GDA0003844133190000052
氮气环境下在25mL的试管反应器中加入二(苯甲腈)二氯化钯(11.5mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),三乙胺(91.1mg,0.9mmol),将底物1a(148.52mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(10%)。分析数据同实施例1。
实施例5
2a:
Figure GDA0003844133190000061
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),2,2’-联吡啶(9.4mg,0.06mmol),三乙胺(91.1mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(31%)。分析数据同实施例1。
实施例6
2a:
Figure GDA0003844133190000062
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),4,4’-二甲氧基-2,2’-联吡啶(13.0mg,0.06mmol),三乙胺(91.1mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至110℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(20%)。分析数据同实施例1。
实施例7
2a:
Figure GDA0003844133190000063
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),叔丁醇钾(101.0mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(60%)。分析数据同实施例1。
实施例8
2a:
Figure GDA0003844133190000071
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),碳酸铯(293.2mg,0.9mmol),三苯基膦(15.7mg,0.06mmol)将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(80%)。分析数据同实施例1。
实施例9
2a:
Figure GDA0003844133190000072
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),碳酸钾(124.4mg,0.9mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(77%)。分析数据同实施例1。
实施例10
2a:
Figure GDA0003844133190000081
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),氟化铯(137mg,0.9mmol),三苯基膦(15.7mg,0.06mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至80℃,反应5h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(92%)。分析数据同实施例1。
实施例11
2a:
Figure GDA0003844133190000082
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),氟化铯(137mg,0.9mmol),三苯基膦(15.7mg,0.06mmol),将底物1a(148.5mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至60℃,反应5h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色液体2a(95%)。分析数据同实施例1。
实施例12
2b:
Figure GDA0003844133190000091
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1b(158.7mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至60℃,反应5h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到淡黄色固体2b(89%)。
1H NMR(400MHz,CDCl3,δppm):7.63(d,J=8.4Hz,2H),7.26–7.05(m,5H),3.81(d,J=10.8Hz,1H),2.99(d,J=16.4,1H),2.56(s,2H),2.35(d,J=9.6Hz,4H),1.92-1.83(m,1H),1.07(s,3H),1.05(t,J=7.6Hz,3H).
13C NMR(101MHz,CDCl3,δppm):145.5,143.6,138.3,137.4,133.4,133.0,129.8,128.5,127.6,126.8,125.8,125.1,53.4,47.5,44.8,42.7,25.2,23.7,21.6,13.2.
MS(EI)m/z 401(M+);HRMS(ESI)Calcd for C22H24ClNO2S+H 402.1295,Found402.1290。
实施例13
2c:
Figure GDA0003844133190000092
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1c(171.9mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至60℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色固体2c(83%)。1H NMR(400MHz,CDCl3,δppm):7.70(d,J=8Hz,2H),7.36-7.3(m,5H),7.17(d,J=6.4Hz,2H),6.75(s,1H),6.42-6.34(m,2H),4.43(d,J=16.4Hz,1H),4.01(d,J=10.8Hz,1),3.71(s,3H),3.29(d,J=16.4Hz,1H),2.74(dd,J=34.8,20Hz,2H),2.65(d,J=10.8Hz,1H),2.40(s,3H),1.34(s,3H).
13C NMR(101MHz,CDCl3,δppm):159.6,145.4,143.4,141.2.138.4,129.6,128.8,128.7,128.1,125.1,123.7,110.4,55.2,53.1,49.0,44.8,42.7,25.4,21.4.
MS(EI)m/z 445(M+);HRMS(ESI)Calcd for C27H27NO2S+H 446.1790,Found446.1795。
实施例14
2d:
Figure GDA0003844133190000101
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1d(165.3mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至60℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到黄色固体2d(80%)。
1H NMR(400MHz,CDCl3,δppm):7.72(d,J=8.0Hz,2H),7.31(dd,J=16.0,8.0Hz,3H),7.07(s,1H),7.00(d,J=8.0Hz,1H),4.22(d,J=16.4Hz,1H),3.90(d,J=10.8Hz,1H),3.08(d,J=16.4Hz,1H),2.69-2.64(m,2H),2.58(t,J=7.6Hz,2H),2.51–2.42(m,5H),1.99-1.90(m,1H),1.61(m,2H),1.39-1.30(m,2H),1.21(s,3H),1.14(t,J=7.6Hz,3H),0.91(t,J=7.2Hz,3H).
13C NMR(101MHz,CDCl3,δppm):143.5,143.3,142.4,139.2,136.2,133.5,129.6,127.5,126.65,126.5,125.5,123.9,53.5,47.4,44.4,42.7,35.5,33.6,25.2,23.6,22.3,21.4,13.9,13.2.
MS(EI)m/z 423(M+);HRMS(ESI)Calcd for C16H21N2O2S+H 424.2310,Found424.2315。
实施例15
2e:
Figure GDA0003844133190000111
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1e(161.1mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至60℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到白色固体2e(83%)。
1H NMR(400MHz,CDCl3,δppm):7.34(t,J=7.2Hz,3H),7.23-7.10(m,7H),6.98(d,J=7.6Hz,1H),6.92(s,1H),4.37(d,J=10.8Hz,1H),3.99(d,J=16.4Hz,1H),3.37(d,J=16.8Hz,1H),3.12(dd,J=28.4,15.2Hz,2H),2.94(d,J=11.2Hz,1H),2.65-2.59(m,1H),2.38(s,3H),2.25(s,3H),2.13-2.05(m,1H),1.68-1.60(m,2H),1.53-1.42(m,2H),1.00(t,J=7.2Hz,3H).
13C NMR(101MHz,CDCl3,δppm):145.4,143.0,142.8,137.6,137.0,137.0,134.2,129.4,128.7,128.1,127.5,127.4,127.3,126.2,126.0,123.4,54.3,53.3,47.5,44.1,31.2,30.8,23.0,21.5,21.3,14.0.
MS(EI)m/z 471(M+);HRMS(ESI)Calcd for C30H33NO2S+H 472.2310,Found472.2314。
实施例16
2f:
Figure GDA0003844133190000112
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1f(102.6mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至60℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到淡黄色液体2f(68%)。
1H NMR(400MHz,CDCl3,δppm):7.42(d,J=7.2Hz,1H),7.27(d,J=6.8Hz,1H),7.22-7.15(m,2H),4.34(d,J=16.4Hz,1H),4.02(d,J=16.4Hz,1H),3.94(d,J=10.0Hz,1H),3.49(d,J=10.4Hz,1H),2.70-2.56(m,2H),2.49-2.40(m,1H),2.06-1.96(m,1H),1.16-1.12(m,6H).
13C NMR(101MHz,CDCl3,δppm):143.4,139.5,139.5,130.9,127.1,126.5,125.7,124.1,74.4,67.5,42.7,41.9,24.7,22.0,13.5.
MS(EI)m/z 214(M+);HRMS(ESI)Calcd for C15H18O+H 215.1436,Found215.1441。
实施例17
2g:
Figure GDA0003844133190000121
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1g(117.0mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到淡黄色液体2g(70%)。
1H NMR(400MHz,CDCl3,δppm):7.31-7.24(m,3H),7.17-7.15(m,3H),7.02(t,J=7.2Hz,1H),6.80(J=8Hz,1H),6.52(d,J=7.6Hz,1H),4.45(d,J=16.8Hz,1H),4.15(d,J=17.2Hz,1H),3.97(d,J=10.0Hz,1H),3.59(d,J=10.0Hz,1H),2.72(d,J=15.2Hz,1H),2.59(d,J=15.2Hz,1H),1.22(s,3H).
13C NMR(101MHz,CDCl3,δppm):143.5,141.0,138.7,137.8,129.6,128.9,128.7,127.6,127.6,126.1,125.5,124.1,74.0,69.1,42.8,41.7,24.8.
MS(EI)m/z 262(M+);HRMS(ESI)Calcd for C19H18O+H 263.1436,Found263.1441。
实施例18
2h:
Figure GDA0003844133190000131
氮气环境下在25mL的试管反应器中加入醋酸钯(6.7mg,0.03mmol),三苯基膦(15.7mg,0.06mmol),氟化铯(137mg,0.9mmol),将底物1h(155.4mg,0.3mmol)称入反应管,加入甲苯:乙腈=1:1(甲苯1.5mL,乙腈1.5mL)。将反应体系加热至130℃,反应3h。TLC检测反应结束后,将体系冷却至室温。加硅胶旋干,柱层析,得到淡黄色液体2h(53%)。
1H NMR(400MHz,CDCl3,δppm):7.24(d,J=8.0Hz,1H),7.11(s,1H),7.06(d,J=8.0Hz,1H),4.20-4.00(m,4H),3.00(d,J=17.2Hz,1H),2.78(d,J=14.8Hz,1H),2.59(d,J=14.8Hz,1H),2.52-2.43(m,1H),2.37-2.22(m,3H),2.06-1.97(m,1H),1.21-1.07(m,9H),0.85(s,3H).
13C NMR(101MHz,CDCl3,δppm):172.3,171.9,145.6,138.6,138.2,132.1,130.8,126.3,125.6,125.1,61.4,53.9,47.7,43.5,39.7,34.7,27.0,26.5,14.0,14.0,12.7.
MS(EI)m/z 390(M+);HRMS(ESI)Calcd for C22H27ClO4+H 391.1676,Found391.1680。

Claims (6)

1.一种六并五并六芴类衍生物的合成方法,其特征在于,以(Z)-1-碘-1-芳基-1,6-二烯类化合物(1)为反应底物,在金属钯催化剂的作用下,在配体和碱的存在下,在反应溶剂体系中进行反应,经分子内HecK环化与芳基C-H键活化过程得到芴类衍生物(2);反应过程如式(I)所示;
Figure 161533DEST_PATH_IMAGE001
其中,R1是乙基、正丁基、苯基;R2是甲基、苯基; R3是氢、正丁基、氯、甲氧基、甲基;所述钯催化剂是醋酸钯、二(三苯基膦)二氯化钯、二(苯甲腈)二氯化钯、四(三苯基膦)钯;
所述配体是三苯基膦、2,2'-联吡啶、4,4'-二甲氧基-2,2'-联吡啶;
所述反应的溶剂体系是混合溶剂甲苯:乙腈=1:1;甲苯1.5mL, 乙腈1.5mL;
所述碱为氟化铯、三乙胺、碳酸铯、碳酸钾、叔丁醇钾。
2.如权利要求1所述的六并五并六芴类衍生物的合成方法,其特征在于,以化合物1的用量为基准,所述催化剂的用量为10 mol%当量。
3.如权利要求1所述的六并五并六芴类衍生物的合成方法,其特征在于,以化合物1的用量为基准,所述配体的用量为20 mol%当量。
4.如权利要求1所述的六并五并六芴类衍生物的合成方法,其特征在于,合成反应在60oC进行。
5.如权利要求1所述的六并五并六芴类衍生物的合成方法,其特征在于,反应时间为5h。
6.如权利要求1所述的六并五并六芴类衍生物的合成方法,其特征在于,以化合物1的用量为基准,所述碱的用量为3.0当量。
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Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
AgSCF3-Mediated Trifluoromethylthiolation/Radical Cascade Cyclization of 1,6-Enynes;Yi-Feng Qiu et al.;《Organic Letters》;20150712;第17卷;3694-3697 *
Palladium-Catalyzed Cycloisomerization of (Z)-1-Iodo-1,6-dienes to 3-Aza-bicyclo[4.1.0]hept-2-enes;Xiaochen Chi et al.;《Asian J.Org.Chem.》;20190404;第8卷;840-843 *
Palladium-catalyzed intramolecular vinylarylation of alkene: Access to spirocyclic scaffold;Longlei Hou et al.;《Tetrahedron Letters》;20180303;第59卷;1804-1807 *
烷基Heck反应研究进展;董旭等;《有机化学》;20170413;第37卷;1088-1098 *

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