CN110283159A - 一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯及其制备方法 - Google Patents

一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯及其制备方法 Download PDF

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CN110283159A
CN110283159A CN201910645483.3A CN201910645483A CN110283159A CN 110283159 A CN110283159 A CN 110283159A CN 201910645483 A CN201910645483 A CN 201910645483A CN 110283159 A CN110283159 A CN 110283159A
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赵伟利
张健
刘唱
金月
陶远芳
王先辉
王楠楠
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Shanghai Annengjian Biopharmaceutical Technology Co.,Ltd.
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Abstract

本发明提供了一锅法制备的2,3‑二取代吡咯或2,3,4‑三取代吡咯及其制备方法,酮肟与对甲苯磺酰氯在碱性条件下生成酮肟磺酸酯,酮肟磺酸酯不经分离,在该条件下发生Neber重排得到氮杂环丙烯中间体,氮杂环丙烯中间体与α位含质子的酮经开环和环化得到2,3‑二取代吡咯或2,3,4‑三取代吡咯。本发明首次提出酮肟与对甲苯磺酰氯在碱性条件下生成酮肟磺酸酯的方法,酮肟磺酸酯不经分离,在该条件下发生Neber重排得到的中间体与酮经开环和环化得到2,3‑二取代吡咯和2,3,4‑三取代吡咯的方法,不仅简化合成步骤,提高收率且扩大反应的适用范围。

Description

一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯及其制备 方法
技术领域
本发明涉及化学合成领域,具体涉及一种一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯及制备方法。
背景技术
吡咯及其衍生物是各种化学物质及功能材料的重要前驱体,同时吡咯环广泛分布于许多在药物化学方面具有重要作用的天然和非天然化合物之中,所以合成吡咯及其衍生物具有重要的意义。迄今为止,人们研究了多种合成吡咯及其衍生物的方法,但2,4-二取代吡咯和2,3,4- 三取代吡咯的合成方法却相对匮乏,且现有的合成方案中存在诸多限制。
目前合成2,3-二取代吡咯和2,3,4-三取代吡咯的方案通常为以下两类:(1)利用Paal-Knorr反应,以羟醛缩合得到α,β-不饱和酮,硝基甲烷加成,Nef反应,醋酸、醋酸铵环化得到相应的2,4-二取代吡咯。(J.Org.Chem.2005,70,5571-5578)。此合成方法仅能合成2,4-二取代芳基吡咯;(2)通过烯醇负离子对氮杂环丙烯衍生物的加成重排反应,制备2,4-二取代吡咯或2,3,4-三取代吡咯。此方法虽然可以制备多种2,4-二取代吡咯或2,3,4-三取代吡咯,但氮杂环丙烯通常由芳基或杂芳基乙烯经由氯化碘(或溴素)、叠氮化钠加成,碱性脱卤化氢,以及高温脱氮环合而制备,操作繁琐且使用了腐蚀、易爆试剂。一方面氮杂环丙烯稳定性差,另一方面芳基或杂芳基乙烯来源有限,限制该合成路线的使用,迫切需要一种更加简洁、高效的方法来构建2,4-二取代吡咯和2,3,4-三取代吡咯。
本发明人于2017发现了一种利用酮肟磺酸酯发生Neber重排“在位”得到的中间体与α位含质子的酮在碱性条件下经开环和环化得到2,3-二取代吡咯和2,3,4-三取代吡咯的新方法(刘唱,吡啶及氨基修饰近红外BODIPY类染料的构建,河南大学,2017,1-128),可以方便地制备多种2,4-二取代吡咯或2,3,4-三取代吡咯,但是该方法需要先制备酮肟磺酸酯,含有富电子环或空间位阻较大的酮肟磺酸酯不稳定,即使在中性条件下也容易发生Beckmann重排,生成酰胺副产物,无法得到吡咯衍生物,限制了该方法的利用。
发明内容
本发明提出了一种一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯及制备方法,采用酮肟与对甲苯磺酰氯在碱性条件下生成酮肟磺酸酯,酮肟磺酸酯不经分离,在碱性条件下发生 Neber重排得到的中间体迅速与α位含质子的酮反应得到2,3-二取代吡咯和2,3,4-三取代吡咯,不仅简化了合成步骤,提高收率,而且扩大反应的适用范围。采用该连续的“一锅煮”方法能够合成54种不同取代基的2,4-二取代吡咯或2,3,4-三取代吡咯。
实现本发明的技术方案是:
一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,酮肟与对甲苯磺酰氯在碱性条件下生成酮肟磺酸酯,酮肟磺酸酯不经分离,在该条件下发生Neber重排得到氮杂环丙烯中间体,氮杂环丙烯中间体与α位含质子的酮经开环和环化得到2,3-二取代吡咯或2,3,4-三取代吡咯。
反应方程式为:
所述酮肟的结构式为:氮杂环丙烯中间体的结构式为:其中R1为C1-C8烷基、C3-C6环烷基、苯基、萘基、取代芳基、呋喃基、噻吩基、吡啶基或吡嗪基。
所述α位含质子的酮结构式为:其中R2和R3选自H、C1-C8烷基、C3-C6环烷基、苯基、萘基、取代芳基、呋喃基、噻吩基、吡啶基或吡嗪基。
所述的一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,具体步骤如下:
(1)N2保护冰水浴条件下,将酮肟溶于溶剂中,缓慢加入碱性溶液中,之后加入对甲苯磺酰氯溶液进行反应,得到氮杂环丙烯中间体;
(2)向步骤(1)得到的氮杂环丙烯中间体中加入α位含质子的酮溶液进行反应,反应后冰水淬灭、萃取并干燥,层析得到2,3-二取代吡咯或2,3,4-三取代吡咯。
所述步骤(1)中溶剂为四氢呋喃,碱性溶液为将NaH和二异丙基氨基锂溶于四氢呋喃中,对甲苯磺酰氯溶液为将对甲苯磺酰氯溶于四氢呋喃中,酮肟、碱和对甲苯磺酰氯的摩尔比为1:(2-6):1,室温条件下反应0.5-1h。
所述步骤(2)中α位含质子的酮与步骤(1)中酮肟的摩尔比为(1-4):1,反应温度为0-66℃,反应时间为2-8h。
制备的2,3-二取代吡咯或2,3,4-三取代吡咯,结构式如下:其中R1、R2和R3包括但不限于H、C1-C8烷基、C3-C6环烷基、苯基、萘基、取代芳基、呋喃基、噻吩基、吡啶基或吡嗪基中的任意一种。
所述R1、R2或R2、R3连在一起成为并环结构。
本发明的有益效果是:本发明首次提出酮肟与对甲苯磺酰氯在碱性条件下生成酮肟磺酸酯的方法,酮肟磺酸酯不经分离,在该条件下发生Neber重排得到的中间体与酮经开环和环化得到2,3-二取代吡咯和2,3,4-三取代吡咯的方法,不仅简化合成步骤,提高收率且扩大反应的适用范围。
具体实施方式
下面将结合本发明实施例,对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有付出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
7-甲氧基-3-(4-吡啶)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌6 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体7-甲氧基-3-(4- 吡啶)-4,5-二氢苯并[g]吲哚。
Yield(65%).Mp.185-187℃.1H NMR(400MHz,d6-DMSO)δ11.61(s,1H),8.46(s,2H), 7.44(t,J=6.9Hz,3H),7.37(s,1H),6.85–6.78(m,2H),3.74(s,3H),2.86(s,4H).13CNMR(100 MHz,d6-DMSO)δ157.20,149.65,143.65,135.74,129.07,122.45,120.54,119.11,118.00,115.05, 114.08,111.56,55.04,29.71,21.11.ESI-MS(m/z):[M+H]+Calcd.forC18H16N2O:277.1;found 277.4。
实施例2
2-(4-甲氧基苯)-4-(4-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解1-(4-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-甲氧基苯)-4-(4- 吡啶)吡咯。
Yield(80%).Mp.183-185℃.1H NMR(400MHz,d6-DMSO)δ11.57(s,1H),8.43(d,J=6.0 Hz,2H),7.62(d,J=8.7Hz,2H),7.56(d,J=6.1Hz,3H),6.98(s,1H),6.95(d,J=4.0Hz,2H), 3.77(s,3H).13C NMR(100MHz,d6-DMSO)δ157.87,149.73,143.07,133.10,125.19,125.03, 121.89,118.97,118.26,114.26,102.13,55.14.ESI-MS(m/z):[M+H]+Calcd.for C16H14N2O: 251.1;found 251.3。
实施例3
3-(4-吡啶)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体3-(4-吡啶)-4,5-二氢苯并[g]吲哚。
Yield(95%).Mp.221-223℃.1H NMR(400MHz,d6-DMSO)δ11.71(s,1H),8.47(d,J=5.4 Hz,2H),7.52–7.40(m,4H),7.20(t,J=7.6Hz,2H),7.05(t,J=7.4Hz,1H),2.90(s,4H).13C NMR(100MHz,d6-DMSO)δ149.60,143.58,133.84,129.24,129.01,127.95,126.52,125.16, 120.63,119.41,119.22,119.07,116.94,29.32,21.13.HRMS(ESI)m/z[M+H]+Calcd.for C17H14N2:247.1230,found:247.1231。
实施例4
2-苯基-4-(4-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-苯基-4-(4-吡啶)吡咯。
Yield(70%).Mp.188-190℃.1H NMR(400MHz,d6-DMSO)δ11.72(s,1H),8.45(d,J=5.8 Hz,2H),7.70(d,J=7.5Hz,2H),7.62(s,1H),7.59(d,J=5.9Hz,2H),7.39(t,J=7.7Hz,2H), 7.21(t,J=7.3Hz,1H),7.10(s,1H).13C NMR(100MHz,d6-DMSO)δ149.75,142.91,133.00, 132.27,128.79,126.12,123.61,122.07,119.05,119.01,103.42.HRMS(ESI)m/z[M+H]+Calcd. for C15H12N2:221.1073,found:221.1077。
实施例5
7-甲氧基-3-(3-吡啶)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(3-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌6 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得7-甲氧基-3-(3-吡啶)-4,5- 二氢苯并[g]吲哚。
Yield(70%).Mp.103-105℃.1H NMR(400MHz,d6-DMSO)δ11.42(s,1H),8.68(s,1H), 8.36(d,J=4.5Hz,1H),7.79(d,J=7.9Hz,1H),7.41(d,J=8.3Hz,1H),7.36(dd,J=7.7,4.8Hz, 1H),7.18(d,J=2.6Hz,1H),6.84(s,1H),6.79(dd,J=8.3,2.3Hz,1H),3.74(s,3H),2.83(dd,J= 15.6,6.2Hz,4H).13C NMR(100MHz,d6-DMSO)δ157.07,147.25,145.92,135.79,133.19, 132.09,128.63,123.61,122.70,120.44,118.43,116.52,114.84,114.11,111.53,55.03,29.85, 20.89.HRMS(ESI)m/z[M+H]+Calcd.for C18H16N2O:277.1335,found:277.1337。
实施例6
2-(4-甲氧基苯)-4-(3-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(3-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-甲氧基苯)-4- (3-吡啶)吡咯。
Yield(85%).Mp.140-142℃.1H NMR(400MHz,d6-DMSO)δ11.47(s,1H),8.88(s,1H), 8.32(d,J=4.5Hz,1H),7.95(d,J=7.9Hz,1H),7.63(d,J=8.5Hz,2H),7.43(s,1H),7.32(dd,J =7.7,4.8Hz,1H),6.97(d,J=8.5Hz,2H),6.91(s,1H),3.76(s,3H).13C NMR(100MHz, d6-DMSO)δ157.72,145.93,145.81,132.76,131.58,131.22,125.37,124.92,123.65,121.10, 116.53,114.21,101.94,55.12.HRMS(ESI)m/z[M+H]+Calcd.forC16H14N2O:251.1179,found: 251.1181。
实施例7
3-(3-吡啶)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(3-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体3-(3-吡啶)-4,5-二氢苯并 [g]吲哚。
Yield(70%).Mp.183-185℃.1H NMR(400MHz,d6-DMSO)δ11.57(s,1H),8.70(s,1H), 8.38(s,1H),7.81(d,J=7.7Hz,1H),7.48(d,J=7.5Hz,1H),7.40–7.34(m,1H),7.26(d,J=2.3 Hz,1H),7.20(t,J=7.1Hz,2H),7.04(t,J=7.3Hz,1H),2.86(dd,J=12.4,5.5Hz,4H).13C NMR (100MHz,d6-DMSO)δ147.29,146.01,133.89,133.30,131.93,129.47,128.56,127.96,126.49, 124.96,123.64,119.34,118.56,117.60,116.69,29.46,20.90.HRMS(ESI)m/z[M+H]+Calcd.for C17H14N2:247.1230,found:247.1230。
实施例8
2-苯基-4-(3-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(3-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的苯乙酮((6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-苯基-4-(3-吡啶)吡咯。
Yield(58%).Mp.132-133℃.1H NMR(400MHz,d6-DMSO)δ11.58(s,1H),8.89(s,1H), 8.33(d,J=4.2Hz,1H),7.97(d,J=7.8Hz,1H),7.69(d,J=7.7Hz,2H),7.48(s,1H),7.36(dt,J =12.5,7.5Hz,3H),7.19(t,J=7.2Hz,1H),7.05(s,1H).13C NMR(100MHz,d6-DMSO)δ 146.10,145.92,132.76,132.48,131.48,131.34,128.78,125.96,123.70,123.57,121.39,117.41, 103.23.HRMS(ESI)m/z[M+H]+Calcd.for C15H12N2:221.1073,found:221.1075。
实施例9
7-甲氧基-3-(2-吡啶)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌6 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得7-甲氧基-3-(2-吡啶)-4,5- 二氢苯并[g]吲哚。
Yield(80%).Mp.64-65℃.1H NMR(400MHz,d6-DMSO)δ11.41(s,1H),8.49(d,J=4.0 Hz,1H),7.67(td,J=7.8,1.7Hz,1H),7.55(d,J=8.0Hz,1H),7.42(d,J=8.3Hz,1H),7.38(d,J =2.8Hz,1H),7.07(dd,J=6.8,5.3Hz,1H),6.83(s,1H),6.79(dd,J=8.3,2.5Hz,1H),3.74(s, 3H),3.04(t,J=7.6Hz,2H),2.86(t,J=7.6Hz,2H).13C NMR(100MHz,d6-DMSO)δ157.05, 155.56,148.97,136.15,135.94,128.67,122.79,121.84,120.41,119.73,119.64,118.31,115.87, 114.07,111.48,55.02,29.86,21.64.HRMS(ESI)m/z[M+H]+Calcd.for C18H16N2O:277.1335, found:277.1337。
实施例10
2-(4-甲氧基苯)-4-(2-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-甲氧基苯)-4-(2- 吡啶)吡咯。
Yield(50%).Mp.118-120℃.1H NMR(400MHz,d6-DMSO)δ11.44(s,1H),8.46(d,J=4.3 Hz,1H),7.69(t,J=7.6Hz,1H),7.65–7.60(m,3H),7.47(s,1H),7.10–7.05(m,1H),6.96(d,J =8.5Hz,3H),3.77(s,3H).13C NMR(100MHz,d6-DMSO)δ157.69,154.34,148.98,136.33, 132.42,125.43,124.89,120.04,118.53,118.19,114.23,102.63,55.11.HRMS(ESI)m/z[M+H]+ Calcd.for C16H13N2O:251.1179,found:251.1186。
实施例11
3-(2-吡啶)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体3-(2-吡啶)-4,5-二氢苯并[g]吲哚。
Yield(70%).Mp.52-53℃.1H NMR(400MHz,d6-DMSO)δ11.55(s,1H),8.50(d,J=5.5 Hz,1H),7.69(td,J=7.8,1.8Hz,1H),7.57(d,J=8.0Hz,1H),7.47(dd,J=10.4,5.1Hz,2H), 7.19(t,J=7.0Hz,2H),7.09(dd,J=6.5,5.0Hz,1H),7.03(t,J=7.4Hz,1H),3.06(t,J=7.7Hz, 2H),2.87(t,J=7.6Hz,2H).13C NMR(100MHz,d6-DMSO)δ155.38,148.99,136.20,134.01, 129.53,128.59,127.92,126.41,124.89,121.93,119.80,119.75,119.29,117.71,29.44,21.65. HRMS(ESI)m/z[M+H]+Calcd.for C17H14N2:247.1230,found:247.1231。
实施例12
2-苯基-4-(2-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-苯基-4-(2-吡啶)吡咯。
Yield(50%).Mp.124-125℃.1H NMR(400MHz,d6-DMSO)δ11.62(s,1H),8.49(s,1H), 7.78–7.62(m,4H),7.57(s,1H),7.38(s,2H),7.24–7.04(m,3H).13C NMR(101MHz, d6-DMSO)δ154.22,149.03,136.36,132.55,132.38,128.77,125.88,125.66,123.51,120.15,119.01,118.59,103.89.ESI-MS(m/z):[M+H]+Calcd.for C15H12N2:221.1;found 221.0。
实施例13
7-甲氧基-3-吡嗪基-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-吡嗪基-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6 mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体7-甲氧基-3-吡嗪基-4,5- 二氢苯并[g]吲哚。
Yield(70%).Mp.185-187℃.1H NMR(400MHz,d6-DMSO)δ11.60(s,1H),8.90(s,1H), 8.50(s,1H),8.29(d,J=2.4Hz,1H),7.57(d,J=2.7Hz,1H),7.42(d,J=8.3Hz,1H),6.84(s, 1H),6.80(d,J=8.3Hz,1H),3.75(s,3H),3.04(t,J=7.6Hz,2H),2.86(t,J=7.6Hz,2H).13C NMR(100MHz,d6-DMSO)δ157.25,151.59,143.70,141.73,139.84,136.04,129.20,122.41, 120.56,119.17,118.57,116.17,114.11,111.51,55.02,29.72,21.46.HRMS(ESI)m/z[M+H]+ Calcd.for C17H15N3O:278.1288,found:278.1291。
实施例14
2-(4-甲氧基苯)-4-吡嗪基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-吡嗪基-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6 mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-甲氧基苯)-4-吡嗪基吡咯。
Yield(50%).Mp.172-173℃.1H NMR(400MHz,d6-DMSO)δ11.64(s,1H),8.98(s,1H), 8.48(s,1H),8.30(d,J=2.5Hz,1H),7.64(d,J=8.5Hz,3H),7.05(s,1H),6.97(d,J=8.7Hz, 2H),3.77(s,3H).13C NMR(100MHz,d6-DMSO)δ157.89,150.18,143.87,140.89,140.45, 133.09,125.11,125.06,122.19,119.26,114.25,102.53,55.11.HRMS(ESI)m/z[M+H]+Calcd.for C15H13N3O:252.1131,found:252.1131。
实施例15
3-吡嗪基-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-吡嗪基-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6 mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体3-吡嗪基-4,5-二氢苯并[g]吲哚。
Yield(80%).Mp.203-204℃.1H NMR(400MHz,d6-DMSO)δ11.75(s,1H),8.92(s,1H), 8.51(s,1H),8.30(d,J=2.5Hz,1H),7.65(d,J=2.8Hz,1H),7.50(d,J=7.7Hz,1H),7.24–7.15 (m,2H),7.05(t,J=7.3Hz,1H),3.07(t,J=7.6Hz,2H),2.88(t,J=7.6Hz,2H).13C NMR(100 MHz,d6-DMSO)δ151.42,143.72,141.76,139.97,134.11,129.20,129.11,127.98,126.45,125.18, 120.11,119.42,118.68,118.06,29.31,21.48.HRMS(ESI)m/z[M+H]+Calcd.for C16H13N3: 248.1184,found:248.1184。
实施例16
2-苯基-4-吡嗪基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-吡嗪基-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6 mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-苯基-4-吡嗪基吡咯。
Yield(55%).Mp.190-192℃.1H NMR(400MHz,d6-DMSO)δ11.81(s,1H),9.02(s,1H), 8.50(s,1H),8.32(s,1H),7.73(d,J=7.5Hz,3H),7.39(t,J=7.5Hz,2H),7.20(d,J=9.7Hz,2H). 13C NMR(100MHz,d6-DMSO)δ150.06,143.91,140.95,140.61,133.04,132.23,128.81,126.18, 123.68,122.39,120.03,103.83.HRMS(ESI)m/z[M+H]+Calcd.forC14H11N3:222.1026,found: 222.1025。
实施例17
7-甲氧基-3-(4-三氟甲基苯)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-三氟甲基苯)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体7-甲氧基 -3-(4-三氟甲基苯)-4,5-二氢苯并[g]吲哚。
Yield(40%).Mp.167-168℃.1H NMR(400MHz,d6-DMSO)δ11.49(s,1H),7.69–7.60(m, 4H),7.44(d,J=8.2Hz,1H),7.23(d,J=2.5Hz,1H),6.85–6.77(m,2H),3.74(s,3H),2.84(s, 4H).13C NMR(100MHz,d6-DMSO)δ157.17,140.69,135.83,128.86,126.46,125.35(q,J=3.8 Hz),125.11(q,J=31.6Hz),124.71(q,J=269.8Hz),122.67,120.55,117.22,114.87,114.08, 111.57,55.00,29.85,21.09.HRMS(ESI)m/z[M+H]+Calcd.for C20H16F3NO:344.1257,found: 344.1242。
实施例18
2-(4-甲氧基苯)-4-(4-三氟甲基苯)吡咯的合成,结构式如下:
N2保护冰水浴条件下,将THF溶解的1-(4-三氟甲基苯)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌 6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-(4- 三氟甲基苯)吡咯。
Yield(50%).Mp.164-166℃.1H NMR(400MHz,d6-DMSO)δ11.50(s,1H),7.80(d,J=7.9 Hz,2H),7.63(d,J=7.7Hz,4H),7.46(s,1H),6.97(d,J=8.4Hz,2H),6.91(s,1H),3.77(s,3H). 13C NMR(100MHz,d6-DMSO)δ157.80,140.11,132.94,125.42(q,J=3.7Hz),125.33,125.06 (q,J=31.4Hz),125.98,124.70(q,J=269.6Hz),124.57,123.35,123.11,117.36,114.23,102.17, 55.09.HRMS(ESI)m/z[M+H]+Calcd.for C18H14F3NO:318.1100,found:318.1097。
实施例19
3-(4-三氟甲基苯)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-三氟甲基苯)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体3-(4-三氟甲基苯)-4,5-二氢苯并[g]吲哚。
Yield(64%).Mp.157-159℃.1H NMR(400MHz,d6-DMSO)δ11.63(s,1H),7.70–7.63(m, 4H),7.50(d,J=7.4Hz,1H),7.30(d,J=2.8Hz,1H),7.20(t,J=7.1Hz,2H),7.04(t,J=7.4Hz, 1H),2.86(s,4H).13C NMR(100MHz,d6-DMSO)δ140.47,133.89,129.43,128.75,127.94, 126.55,126.50,125.36(q,J=3.6Hz),125.18(q,J=25.0Hz),125.02,124.68(q,J=269.9Hz), 120.66,119.40,118.25,116.70,29.44,21.08.HRMS(ESI)m/z[M+H]+Calcd.for C19H14F3N: 314.1151,found:314.1150。
实施例20
2-苯基-4-(4-三氟甲基苯)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-三氟甲基苯)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-苯基-4-(4-三氟甲基苯) 吡咯。
Yield(55%).Mp.199-201℃.1H NMR(400MHz,d6-DMSO)δ11.65(s,1H),7.83(d,J=8.0Hz,2H),7.72(d,J=7.6Hz,2H),7.65(d,J=8.1Hz,2H),7.53(s,1H),7.39(t,J=7.6Hz,2H), 7.20(t,J=7.2Hz,1H),7.06(s,1H)..13C NMR(100MHz,d6-DMSO)δ139.95,132.84,132.40, 128.75,125.98,125.44(q,J=269.8Hz),125.19(q,J=31.6Hz),124.67(q,J=269.8Hz),124.64, 123.57,123.29,118.17,103.44.HRMS(ESI)m/z[M+H]+Calcd.forC17H12F3N:288.0995,found: 288.0975。
实施例21
7-甲氧基-3-甲基-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体7-甲氧基-3-甲基-4,5-二氢苯并 [g]吲哚。
Yield(40%).Mp.165-166℃.1H NMR(400MHz,d6-DMSO)δ10.68(s,1H),7.31(d,J=8.3 Hz,1H),6.78(s,1H),6.74(dd,J=8.3,2.5Hz,1H),6.48(s,1H),3.73(s,3H),2.81(t,J=7.5Hz, 2H),2.53(d,J=8.0Hz,2H),1.97(s,3H).13C NMR(100MHz,d6-DMSO)δ156.52,135.54, 126.91,123.46,119.90,116.78,115.50,115.05,114.16,111.34,54.96,29.89,19.65,9.92.HRMS (ESI)m/z[M+H]+Calcd.for C14H15NO:214.1226,found:214.1215。
实施例22
2-(4-甲氧基苯)-4-甲基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-甲基吡咯。
Yield(44%).Mp.132-134℃..1H NMR(400MHz,d6-DMSO)δ10.74(s,1H),7.48(d,J= 8.8Hz,2H),6.90(d,J=8.8Hz,2H),6.53(s,1H),6.18(s,1H),3.74(s,3H),2.03(s,3H).13C NMR(100MHz,d6-DMSO)δ157.21,130.97,126.17,124.46,118.26,116.29,114.10,105.74, 55.05,11.98.ESI-MS(m/z):[M+H]+Calcd.for C12H13NO:188.1;found 188.2。
实施例23
3-甲基-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体3-甲基-4,5-二氢苯并[g]吲哚。
Yield(47%).Mp.110-111℃.1H NMR(400MHz,d6-DMSO)δ10.83(s,1H),7.38(d,J=7.6 Hz,1H),7.13(t,J=7.0Hz,2H),6.95(t,J=7.4Hz,1H),6.55(s,1H),2.82(t,J=7.6Hz,2H), 2.54(t,J=7.6Hz,2H),1.97(s,3H).13C NMR(100MHz,d6-DMSO)δ133.63,130.10,127.90, 126.87,126.34,124.14,118.86,118.58,116.67,115.23,29.47,19.65,9.85.ESI-MS(m/z):[M+H]+ Calcd.for C13H13N:184.1;found 184.1。
实施例24
2-苯基-4-甲基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-苯基-4-甲基吡咯。
Yield(44%).Mp.94-96℃.1H NMR(400MHz,d6-DMSO)δ10.90(s,1H),7.56(d,J=7.5 Hz,2H),7.31(t,J=7.8Hz,2H),7.11(t,J=7.4Hz,1H),6.60(s,1H),6.33(s,1H),2.05(s,3H). 13C NMR(100MHz,d6-DMSO)δ133.12,130.90,128.63,125.17,123.10,118.53,117.27,106.95, 11.94.ESI-MS(m/z):[M+H]+Calcd.for C11H11N:158.1;found 158.1。
实施例25
7-甲氧基-3-(2-噻吩)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-噻吩)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5 小时后,缓慢加入THF溶解的6-甲氧基-1-萘满酮(6.9mmol),室温搅拌2小时,50℃搅拌 6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体7-甲氧基-3-(2- 噻吩)-4,5-二氢苯并[g]吲哚。
Yield(34%).Mp.177-179℃.1H NMR(400MHz,d6-DMSO)δ11.32(s,1H),7.40(d,J=8.3 Hz,1H),7.31–7.25(m,1H),7.04(dd,J=7.3,2.8Hz,3H),6.82(s,1H),6.78(d,J=8.3Hz,1H), 3.74(s,3H),2.88(t,J=7.3Hz,2H),2.79(t,J=7.0Hz,2H).13C NMR(100MHz,d6-DMSO)δ 157.08,138.80,135.69,128.31,127.55,122.61,121.99,121.45,120.47,115.85,115.71,114.49, 114.12,111.53,55.03,29.68,20.75.ESI-MS(m/z):[M+H]+Calcd.for C17H15NOS:282.1;found 282.3。
实施例26
2-(4-甲氧基苯)-4-(2-噻吩)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-噻吩)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5 小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-(2- 噻吩)吡咯。
Yield(35%).Mp.173-175℃.1H NMR(400MHz,d6-DMSO)δ11.33(s,1H),7.60(d,J=8.7Hz,2H),7.24(d,J=5.0Hz,1H),7.12(d,J=2.3Hz,2H),7.00(dd,J=5.0,3.6Hz,1H),6.95 (d,J=8.7Hz,2H),6.63(s,1H),3.77(s,3H).13C NMR(100MHz,d6-DMSO)δ157.72,139.51, 132.31,127.63,125.26,124.93,121.54,120.59,118.93,115.47,114.19,102.49,55.09.HRMS(ESI) m/z[M+H]+Calcd.for C15H13NOS:256.0791,found:256.0777。
实施例27
3-(2-噻吩)-4,5-二氢苯并[g]吲哚的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-噻吩)-1-乙酮基肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌 0.5小时后,缓慢加入THF溶解的1-四氢萘酮(6.9mmol),室温搅拌2小时,50℃搅拌6 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体3-(2-噻吩)-4,5- 二氢苯并[g]吲哚。
Yield(36%).Mp.170-173℃.1H NMR(400MHz,d6-DMSO)δ11.48(s,1H),7.48(d,J=7.4Hz,1H),7.30(dd,J=4.7,1.5Hz,1H),7.19(dd,J=6.9,5.2Hz,2H),7.13(d,J=2.7Hz,1H), 7.03(dd,J=8.4,5.5Hz,3H),2.94–2.86(m,2H),2.86–2.78(m,2H).13C NMR(100MHz,d6-DMSO)δ138.56,133.76,129.37,128.23,127.98,127.56,126.47,124.96,122.13,121.61, 119.35,116.77,116.28,115.99,29.28,20.77.HRMS(ESI)m/z[M+H]+Calcd.forC16H13NS: 252.0841,found:252.0830。
实施例28
2-苯基-4-(2-噻吩)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-噻吩)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5 小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-苯基-4-(2-噻吩)吡咯。
Yield(36%).Mp.159-161℃.1H NMR(400MHz,d6-DMSO)δ11.48(s,1H),7.67(d,J=7.6Hz,2H),7.37(t,J=7.6Hz,2H),7.25(d,J=4.9Hz,1H),7.22–7.12(m,3H),7.04–6.99(m, 1H),6.78(s,1H).13C NMR(100MHz,d6-DMSO)δ139.31,132.34,132.24,128.75,127.68,125.94,123.54,121.73,120.78,119.14,116.35,103.70.HRMS(ESI)m/z[M+H]+Calcd.forC14H11NS:226.0685,found:226.0673。
实施例29
2-(2-吡啶)-4-苯基吡咯的合成,结构式如下:
步骤如下:
在N2保护、冰水浴条件下,将THF溶解的苯乙酮肟(2g,14.8mmol)缓慢加入NaH(2.35 g,59mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(2.8g,14.8mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-(2-吡啶基)乙酮(1.8g,14.8mmol),室温搅拌2小时, 50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析(二氯甲烷:乙酸乙酯=1:1)得黄色粉末固体2-(2-吡啶)-4-苯基吡咯3a(1.04g,32%)。
Mp.134-136℃.1H NMR(400MHz,d6-DMSO)δ11.67(s,1H),8.51(d,J=4.8Hz,1H),7.76(s,2H),7.64(d,J=7.3Hz,2H),7.38(s,1H),7.33(t,J=7.7Hz,2H),7.22(s,1H),7.17– 7.11(m,2H).13C NMR(100MHz,d6-DMSO)δ150.56,148.88,136.73,135.53,132.26,128.62, 125.21,124.99,124.47,120.62,117.99,105.29.ESI-MS(m/z):[M+H]+Calcd.forC15H13N2:221.1; found 221.1。
实施例30
2-(3-吡啶)-4-苯基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-(3-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(3-吡啶)-4-苯基吡咯。
Yield(32%).Mp.187-189℃.1H NMR(400MHz,d6-DMSO)δ11.62(s,1H),8.95(d,J=1.8Hz,1H),8.37(d,J=4.6Hz,1H),8.03(d,J=8.0Hz,1H),7.62(d,J=7.4Hz,2H),7.43(s,1H),7.39(dd,J=7.9,4.8Hz,1H),7.33(t,J=7.7Hz,2H),7.13(dd,J=13.9,6.4Hz,2H).13CNMR(100MHz,d6-DMSO)δ146.60,144.95,135.47,130.35,129.14,128.65,128.55,125.31,125.16,124.56,123.82,117.65,104.43.HRMS(ESI)m/z[M+H]+Calcd.for C15H12N2:221.1073, found:221.1075。
实施例31
2-(4-吡啶)-4-苯基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的1-(4-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-吡啶)-4-苯基吡咯。
Yield(30%).Mp.208-210℃.1H NMR(400MHz,d6-DMSO)δ11.81(s,1H),8.50(d,J=5.7Hz,2H),7.65(d,J=5.2Hz,4H),7.52(s,1H),7.34(t,J=7.6Hz,2H),7.27(s,1H),7.15(t,J= 7.3Hz,1H).13C NMR(100MHz,d6-DMSO)δ149.93,139.18,135.16,129.49,128.61,125.42, 124.56,118.91,117.49,106.21.HRMS(ESI)m/z[M+H]+Calcd.for C15H12N2:221.1073,found: 221.1074。
实施例32
2-(4-甲氧基苯)-4-苯基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-苯基吡咯。
Yield(43%).Mp.187-189℃.1H NMR(400MHz,d6-DMSO)δ11.28(s,1H),7.60(t,J=8.0 Hz,4H),7.30(dd,J=15.7,8.1Hz,3H),7.11(t,J=7.3Hz,1H),6.95(d,J=8.6Hz,2H),6.81(s, 1H),3.77(s,3H).13C NMR(100MHz,d6-DMSO)δ157.57,135.88,132.30,128.50,125.61, 124.91,124.80,124.52,124.36,115.72,114.17,101.97,55.09..ESI-MS(m/z):[M+H]+Calcd.for C17H15NO:250.1;found 250.1。
实施例33
2-(2-噻吩)-4-苯基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的2-噻吩乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(2-噻吩)-4-苯基吡咯。
Yield(21%).Mp.136-138℃.1H NMR(400MHz,d6-DMSO)δ11.46(s,1H),7.58(d,J=7.3Hz,2H),7.36–7.28(m,4H),7.26(d,J=3.5Hz,1H),7.12(t,J=7.3Hz,1H),7.05(dd,J=5.0, 3.6Hz,1H),6.69(s,1H).13C NMR(100MHz,d6-DMSO)δ136.08,135.40,128.55,127.77,127.13,125.13,124.57,124.44,122.77,120.94,116.25,103.41.ESI-MS(m/z):[M+H]+Calcd.for C14H11NS:226.1;found 226.1。
实施例34
2-(2-吡啶)-4-(4-甲基苯)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的对甲基苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的1-(2-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(2-吡啶)-4-(4-甲基苯) 吡咯。
Yield(10%).Mp.153-154℃.1H NMR(400MHz,d6-DMSO)δ11.60(s,1H),8.50(d,J=4.8Hz,1H),7.74(d,J=3.5Hz,2H),7.51(d,J=8.0Hz,2H),7.31(s,1H),7.20–7.07(m,4H),2.28(s,3H).13C NMR(100MHz,d6-DMSO)δ150.60,148.86,136.70,134.12,132.69,132.10,129.18,124.99,124.40,120.54,117.93,117.55,105.18,20.68.HRMS(ESI)m/z[M+H]+Calcd.for C16H14N2:235.1230,found:235.1229。
实施例35
2-(3-吡啶)-4-(4-甲基苯)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的对甲基苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的1-(3-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(3-吡啶)-4-(4-甲基苯)吡咯。
Yield(8%).Mp.143-145℃.1H NMR(400MHz,d6-DMSO)δ11.59(s,1H),8.97(d,J=1.6 Hz,1H),8.37(d,J=4.6Hz,1H),8.03(d,J=8.0Hz,1H),7.52(d,J=8.0Hz,2H),7.38(d,J= 12.0Hz,2H),7.14(d,J=7.9Hz,2H),7.07(s,1H),2.28(s,3H).13C NMR(100MHz,d6-DMSO) δ146.48,144.92,134.17,132.62,130.22,129.17,128.97,128.57,125.14,124.45,123.72,117.19, 104.26,20.69.HRMS(ESI)m/z[M+H]+Calcd.for C16H14N2:235.1230,found:235.1229。
实施例36
2-(4-吡啶)-4-(4-甲基苯)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的对甲基苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的1-(4-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-吡啶)-4-(4-甲基苯)吡咯。
Yield(15%).Mp.206-208℃.1H NMR(400MHz,d6-DMSO)δ11.76(s,1H),8.50(d,J=5.9Hz,2H),7.64(d,J=6.0Hz,2H),7.53(d,J=8.0Hz,2H),7.46(s,1H),7.22(s,1H),7.15(d,J =7.9Hz,2H),2.28(s,3H).13C NMR(100MHz,d6-DMSO)δ149.94,139.21,134.38,132.33, 129.36,129.19,125.45,124.49,118.51,117.45,106.08,20.69.HRMS(ESI)m/z[M+H]+Calcd.for C16H14N2:235.1230,found:235.1230。
实施例37
2-(4-甲氧基苯)-4-(4-甲基苯)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的对甲基苯乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌8小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-(4-甲基苯)吡咯。
Yield(34%).Mp.196-200℃.1H NMR(400MHz,d6-DMSO)δ11.23(s,1H),7.60(d,J=8.5Hz,2H),7.47(d,J=7.8Hz,2H),7.21(s,1H),7.12(d,J=7.8Hz,2H),6.95(d,J=8.5Hz,2H),6.76(s,1H),3.77(s,3H),2.28(s,3H).13C NMR(100MHz,d6-DMSO)δ157.52,133.78,133.05,132.15,129.08,125.68,124.75,124.53,124.30,115.28,114.16,101.87,55.08,20.67. HRMS(ESI)m/z[M+H]+Calcd.for C18H17NO:264.1383,found:264.1381。
实施例38
2-(4-甲氧基苯)-4-(4-甲氧基苯)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的对甲氧基苯乙酮肟(6.9mmol)缓慢加入NaH(27.6 mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.5小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌8小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-(4- 甲氧基苯)吡咯。
Yield(10%).Mp.>290℃.1H NMR(400MHz,d6-DMSO)δ11.17(s,1H),7.59(d,J=8.7Hz,2H),7.50(d,J=8.7Hz,2H),7.14(s,1H),6.94(d,J=8.7Hz,2H),6.89(d,J=8.7Hz,2H), 6.72(s,1H),3.77(s,3H),3.75(s,3H).13C NMR(100MHz,d6-DMSO)δ157.48,157.02,132.05, 128.62,125.72,125.48,124.72,124.36,114.76,114.15,113.97,101.81,55.09,55.01.ESI-MS (m/z):[M+H]+Calcd.for C18H17NO2:280.1;found 280.1。
实施例39
2-(2-噻吩)-4-(4-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌 2小时后,缓慢加入THF溶解的2-噻吩乙酮(6.9mmol),室温搅拌2小时,50℃搅拌2小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(2-噻吩)-4-(4- 吡啶)吡咯。
Yield(60%).Mp.165-167℃.1H NMR(400MHz,d6-DMSO)δ11.76(s,1H),8.43(d,J=4.7 Hz,2H),7.57(d,J=5.5Hz,3H),7.38(d,J=4.8Hz,1H),7.30(d,J=2.8Hz,1H),7.10–7.03(m, 1H),6.85(s,1H).13C NMR(100MHz,d6-DMSO)δ149.75,142.62,135.59,127.85,123.29, 121.93,121.49,119.03,118.72,103.56.HRMS(ESI)m/z[M+H]+Calcd.forC13H10N2S:227.0637, found:227.0641。
实施例40
2-甲基-4-(4-吡啶)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(4-吡啶)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌 2小时后,缓慢加入THF溶解的丙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-甲基-4-(4-吡啶)吡咯。
Yield(52%).Mp.171-172℃.1H NMR(400MHz,d6-DMSO)δ10.93(s,1H),8.36(d,J=5.6Hz,2H),7.42(d,J=5.8Hz,2H),7.30(s,1H),6.24(s,1H),2.19(s,3H).13C NMR(100MHz,d6-DMSO)δ149.33,143.76,129.09,120.48,118.75,116.22,103.50,12.64.ESI-MS(m/z):[M+H]+Calcd.for C10H10N2:159.1;found 159.3。
实施例41
2-(2-噻吩)-4-(2-噻吩)吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(2-噻吩)-1-乙酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌 0.5小时后,缓慢加入THF溶解的2-噻吩乙酮(6.9mmol),室温搅拌2小时,50℃搅拌3 小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(2-噻吩)-4-(2- 噻吩)吡咯。
Yield(17%).Mp.129-130℃.1H NMR(400MHz,d6-DMSO)δ11.51(s,1H),7.35(d,J=5.0Hz,1H),7.26(dd,J=8.7,4.2Hz,2H),7.14(d,J=2.9Hz,2H),7.05(dd,J=4.9,3.7Hz,1H), 7.00(dd,J=5.0,3.6Hz,1H),6.53(s,1H).13C NMR(100MHz,d6-DMSO)δ138.90,135.67, 127.82,127.69,127.12,123.02,121.83,121.28,120.94,118.95,115.98,103.81.ESI-MS(m/z): [M+H]+Calcd.for C12H9NS2:232.0;found 232.2。
实施例42
(E)-2-(4-甲氧基苯)-4-苯乙烯基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的1-(Z-苯乙烯基)-1-乙酮肟(6.9mmol)缓慢加入 NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌8小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体(Z)-2-(4- 甲氧基苯)-4-苯乙烯基吡咯。
Yield(34%).Mp.180-182℃.1H NMR(400MHz,d6-DMSO)δ11.23(s,1H),7.59(d,J=8.6Hz,2H),7.46(d,J=7.6Hz,2H),7.32(t,J=7.6Hz,2H),7.16(t,J=7.3Hz,1H),7.09(d,J= 16.3Hz,1H),6.95(d,J=8.6Hz,2H),6.80(d,J=16.3Hz,1H),6.72(s,1H),3.77(s,3H).13C NMR(101MHz,d6-DMSO)δ157.68,138.26,132.56,128.62,126.17,125.45,125.38,124.90, 123.18,123.03,119.30,114.20,101.26,55.11.HRMS(ESI)m/z[M+H]+Calcd.forC19H17NO: 276.1383,found:276.1367。
实施例43
2-(2-吡啶)-4-甲基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的1-(2-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌5小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(2-吡啶)-4-甲基吡咯。
Yield(43%).Mp.>290℃.1H NMR(400MHz,d6-DMSO)δ11.10(s,1H),8.45(d,J=4.4Hz,1H),7.68(td,J=7.9,1.7Hz,1H),7.59(d,J=8.0Hz,1H),7.13–7.04(m,1H),6.65(s,1H), 6.58(s,1H),2.07(s,3H).13C NMR(100MHz,d6-DMSO)δ150.88,148.77,136.55,130.91, 120.07,118.87,118.82,117.59,109.09,11.89.HRMS(ESI)m/z[M+H]+Calcd.forC10H10N2: 159.0917,found:159.0912。
实施例44
2-(3-吡啶)-4-甲基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的1-(3-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌5小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(3-吡啶)-4-甲基吡咯。
Yield(46%).Mp.117-118℃.1H NMR(400MHz,d6-DMSO)δ11.76(s,1H),9.12(s,1H), 8.62(d,J=8.0Hz,1H),8.52(d,J=5.1Hz,1H),7.95–7.83(m,1H),6.82(s,1H),6.74(s,1H), 2.05(s,3H).13C NMR(100MHz,d6-DMSO)δ137.78,137.04,136.44,131.97,126.81,124.93, 120.86,119.85,110.94,11.69.ESI-MS(m/z):[M+H]+Calcd.for C10H10N2:159.1;found 159.3。
实施例45
2-(4-吡啶)-4-甲基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的1-(4-吡啶基)乙酮(6.9mmol),室温搅拌2小时,50℃搅拌5小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得黄色固体2-(4-吡啶)-4-甲基吡咯。
Yield(47%).Mp.137-139℃.1H NMR(400MHz,d6-DMSO)δ11.33(s,1H),8.44(d,J=4.7 Hz,2H),7.52(d,J=4.8Hz,2H),6.77(s,1H),6.60(s,1H),2.06(s,3H).13C NMR(100MHz, d6-DMSO)δ149.87,139.53,128.20,119.84,119.49,117.23,109.95,11.76.ESI-MS(m/z):[M+H]+ Calcd.for C10H10N2:159.1;found 159.3。
实施例46
2-(2-噻吩)-4-甲基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的丙酮肟(6.9mmol)缓慢加入NaH(27.6mmol) 的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的2-噻吩乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(2-噻吩)-4-甲基吡咯。
Yield(10%).Mp.90-91℃.1H NMR(400MHz,d6-DMSO)δ10.91(s,1H),7.25(d,J=5.0 Hz,1H),7.13(d,J=3.4Hz,1H),7.01–6.96(m,1H),6.55(s,1H),6.10(s,1H),2.01(s,3H).13C NMR(100MHz,d6-DMSO)δ136.72,127.66,125.76,122.01,120.09,118.38,116.82,107.28, 11.74.ESI-MS(m/z):[M+H]+Calcd.for C9H9NS:164.0;found 164.3。
实施例47
2-(4-甲氧基苯)-4-乙基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的2-丁酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-乙基吡咯。
Yield(17%).Mp.116-118℃.1H NMR(400MHz,d6-DMSO)δ10.75(s,1H),7.49(d,J=8.6 Hz,2H),6.89(d,J=8.6Hz,2H),6.53(s,1H),6.22(s,1H),3.75(s,3H),2.41(q,J=7.5Hz,2H), 1.14(t,J=7.5Hz,3H).13C NMR(101MHz,d6-DMSO)δ157.21,130.88,126.23,125.91,124.47, 115.05,114.10,104.24,55.06,19.83,15.47.HRMS(ESI)m/z[M+H]+Calcd.for C13H15NO: 202.1226,found:202.1229。
实施例48
2-(4-甲氧基苯)-4-异丙基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的3-甲基-2-丁酮肟(6.9mmol)缓慢加入NaH(27.6 mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-异丙基吡咯。
Yield(20%).Mp.126-128℃.1H NMR(400MHz,d6-DMSO)δ10.74(s,1H),7.49(d,J=8.7Hz,2H),6.90(d,J=8.7Hz,2H),6.52(s,1H),6.26(s,1H),3.75(s,3H),2.75(dt,J=13.6,6.8 Hz,1H),1.18(s,3H),1.16(s,3H).13C NMR(100MHz,d6-DMSO)δ157.16,131.51,130.74, 126.24,124.44,114.06,113.88,103.00,55.03,25.96,24.12.HRMS(ESI)m/z[M+H]+Calcd.for C14H17NO:216.1383,found:216.1369。
实施例49
2-(4-甲氧基苯)-4-叔丁基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的频哪酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-叔丁基吡咯。
Yield(25%).Mp.136-137℃.1HNMR(400MHz,d6-DMSO)δ10.73(s,1H),7.51(d,J=8.7Hz,2H),6.91(d,J=8.7Hz,2H),6.53(s,1H),6.32(s,1H),3.76(s,3H),1.23(s,9H).13CNMR(100MHz,d6-DMSO)δ157.14,135.35,130.65,126.26,124.44,114.04,113.10,102.30,55.01,31.80,30.17.ESI-MS(m/z):[M+H]+Calcd.for C15H19NO:230.1;found 230.3。
实施例50
2-(4-甲氧基苯)-4-环丙基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的环丙基甲基酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的对甲氧基苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-环丙基吡咯。
Yield(15%).Mp.119-121℃.1H NMR(400MHz,d6-DMSO)δ10.73(s,1H),7.47(d,J=8.7Hz,2H),6.89(d,J=8.8Hz,2H),6.54(s,1H),6.12(s,1H),3.74(s,3H),1.71–1.62(m,1H), 0.80–0.67(m,2H),0.53–0.36(m,2H).13C NMR(100MHz,d6-DMSO)δ157.19,130.84,126.56,126.06,124.44,114.76,114.05,102.55,55.04,8.14,7.72.HRMS(ESI)m/z[M+H]+Calcd. for C14H15NO:214.1226,found:214.1215。
实施例51
2-苯基-4-环丙基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的环丙基甲基酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-苯基-4-环丙基吡咯。
Yield(5%).Mp.100-102℃.1H NMR(400MHz,d6-DMSO)δ10.91(s,1H),7.56(d,J=7.5 Hz,2H),7.30(t,J=7.7Hz,2H),7.10(t,J=7.3Hz,1H),6.63(s,1H),6.28(s,1H),1.76–1.63(m, 1H),0.83–0.69(m,2H),0.52–0.42(m,2H).13C NMR(100MHz,d6-DMSO)δ133.04,130.81, 128.59,126.86,125.18,123.10,115.73,103.79,8.12,7.80.HRMS(ESI)m/z[M+H]+Calcd.for C13H14N:184.1121,found:184.1121。
实施例52
2-苯基-4-正丁基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的2-己酮肟(6.9mmol)缓慢加入NaH(27.6mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌1小时后,缓慢加入THF溶解的苯乙酮(6.9mmol),室温搅拌2小时,50℃搅拌6小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-苯基-4-正丁基吡咯。
Yield(12%).Mp.84-85℃.1H NMR(400MHz,d6-DMSO)δ10.91(s,1H),7.57(d,J=7.6 Hz,2H),7.31(t,J=7.7Hz,2H),7.10(t,J=7.3Hz,1H),6.60(s,1H),6.35(s,1H),2.41(t,J=7.6 Hz,2H),1.59–1.47(m,2H),1.40–1.29(m,2H),0.90(t,J=7.3Hz,3H).13C NMR(100MHz, d6-DMSO)δ133.18,130.76,128.61,125.12,124.49,123.09,116.54,105.82,33.00,26.33,21.98, 13.87.ESI-MS(m/z):[M+H]+Calcd.for C14H16N:200.1;found 200.4。
实施例53
2-苯基-4-正己基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的2-正辛酮肟(6.9mmol)缓慢加入二异丙基氨基锂 (13.8mmol)的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌 0.5小时后,缓慢加入THF溶解的苯乙酮(13.8mmol),0℃搅拌8小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-苯基-4-正己基吡咯。
Yield(19%).Mp.88-89℃.1H NMR(400MHz,d6-DMSO)δ10.90(s,1H),7.56(d,J=7.8 Hz,2H),7.30(t,J=7.7Hz,2H),7.10(t,J=7.3Hz,1H),6.59(s,1H),6.34(s,1H),2.40(t,J=7.6 Hz,2H),1.59–1.48(m,2H),1.29(s,6H),0.87(t,J=6.6Hz,3H).13C NMR(100MHz,d6-DMSO) δ133.17,130.74,128.60,125.11,124.52,123.08,116.53,105.79,31.26,30.77,28.61,26.68,22.16, 13.99.HRMS(ESI)m/z[M+H]+Calcd.for C16H21N:228.1747,found:228.1741。
实施例54
2-(4-甲氧基苯)-4-正葵基吡咯的合成,结构式如下:
步骤如下:
N2保护冰水浴条件下,将THF溶解的2-正十二酮肟(6.9mmol)缓慢加入NaH(41.4mmol) 的THF混合体系中,之后缓慢加入THF溶解的TsCl(6.9mmol)。室温搅拌0.8小时后,缓慢加入THF溶解的对甲氧基苯乙酮(27.6mmol),室温搅拌5小时,66℃搅拌2小时,冰水淬灭,二氯甲烷萃取,水硫酸钠干燥,硅胶柱层析,得白色固体2-(4-甲氧基苯)-4-正葵基吡咯。
Yield(13%).Mp.125-126℃.1H NMR(400MHz,d6-DMSO)δ10.73(s,1H),7.48(d,J=8.6Hz,2H),6.89(d,J=8.6Hz,2H),6.51(s,1H),6.20(s,1H),3.74(s,3H),2.37(t,J=7.5Hz, 2H),1.56–1.45(m,2H),1.26(d,J=15.1Hz,14H),0.85(t,J=6.6Hz,3H).13C NMR(100MHz, d6-DMSO)δ157.16,130.78,126.20,124.42,124.25,115.55,114.08,104.56,55.05,31.31,30.77, 29.08,29.03,28.96,28.91,28.72,26.68,22.10,13.96.HRMS(ESI)m/z[M+H]+Calcd.for C21H31NO:314.2478,found:314.2470。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

1.一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,其特征在于:酮肟与对甲苯磺酰氯在碱性条件下生成酮肟磺酸酯,酮肟磺酸酯不经分离,在该条件下发生Neber重排得到氮杂环丙烯中间体,氮杂环丙烯中间体与α位含质子的酮经开环和环化得到2,3-二取代吡咯或2,3,4-三取代吡咯。
2.根据权利要求1所述的一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,其特征在于,所述酮肟的结构式为:氮杂环丙烯中间体的结构式为:其中R1为C1-C8烷基、C3-C6环烷基、苯基、萘基、取代芳基、呋喃基、噻吩基、吡啶基或吡嗪基。
3.根据权利要求1所述的一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,其特征在于,所述α位含质子的酮结构式为:其中R2和R3选自H、C1-C8烷基、C3-C6环烷基、苯基、萘基、取代芳基、呋喃基、噻吩基、吡啶基或吡嗪基。
4.根据权利要求1-3任一项所述的一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,其特征在于具体步骤如下:
(1)N2保护冰水浴条件下,将酮肟溶于溶剂中,缓慢加入碱性溶液中,之后加入对甲苯磺酰氯溶液进行反应,得到氮杂环丙烯中间体;
(2)向步骤(1)得到的氮杂环丙烯中间体中加入α位含质子的酮溶液进行反应,反应后冰水淬灭、萃取并干燥,层析得到2,3-二取代吡咯或2,3,4-三取代吡咯。
5.根据权利要求4所述的一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,其特征在于:所述步骤(1)中溶剂为四氢呋喃,碱性溶液为将NaH和二异丙基氨基锂溶于四氢呋喃中,对甲苯磺酰氯溶液为将对甲苯磺酰氯溶于四氢呋喃中,酮肟、碱和对甲苯磺酰氯的摩尔比为1:(2-6):1,室温条件下反应0.5-1h。
6.根据权利要求4所述的一锅法制备2,3-二取代吡咯或2,3,4-三取代吡咯的方法,其特征在于:所述步骤(2)中α位含质子的酮与步骤(1)中酮肟的摩尔比为(1-4):1,反应温度为0-66℃,反应时间为2-8h。
7.权利要求1所述的一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯,其特征在于结构式如下:其中R1、R2和R3包括但不限于H、C1-C8烷基、C3-C6环烷基、苯基、萘基、取代芳基、呋喃基、噻吩基、吡啶基或吡嗪基中的任意一种。
8.根据权利要求7所述的一锅法制备的2,3-二取代吡咯或2,3,4-三取代吡咯,其特征在于:所述R1、R2或R2、R3连在一起成为并环结构。
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CN104710339A (zh) * 2015-01-22 2015-06-17 华东理工大学 2,3,4-三取代吡咯环衍生物的制备方法
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CN108689901A (zh) * 2018-05-05 2018-10-23 西北大学 一种氮杂环丙烯类化合物的合成方法

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