一锅合成6,11-二氢-5-的ħ -中氮茚[8,7- b ]吲哚通过依次形成β-烯酯,迈克尔加成和的Pictet-格勒反应†
摘要:
在无水ZnCl 2存在下,通过将色胺加到丙酸烷基酯中而生成的β-烯氨基酯与3-苯并亚甲基吲哚反应,以令人满意的收率得到官能化的2-吡咯并3'-yloxindole,可以将其进一步转化为相应的6,11通过CF 3 SO 3 H催化的Pictet-Spengler环化过程,可以使-dihydro -5 H -indolizino [8,7- b ]吲哚获得高收率。在相似的条件下,当使用芳基胺代替色胺时,一锅多米诺反应提供了功能化的2-吡咯基-3'-羟基吲哚。
Aminoenylesters. I. A New Synthesis of 1,2,3,4-Tetrahydropyrimidines by Heterocyclic Annelation Reactions of Aminoenylesters with Primary Amines and Acetaldehyde.
Convenient construction of tetrahydrochromeno[4′,3′:2,3]indolizino[8,7-<i>b</i>]indoles and tetrahydroindolizino[8,7-<i>b</i>]indoles <i>via</i> one-pot domino reaction
作者:Jing Sun、Wang Jiang、Chao-Guo Yan
DOI:10.1039/c8ra05138k
日期:——
tetrahydrochromeno[4′,3′:2,3]indolizino[8,7-b]indoles were conveniently synthesized in high yields by one-pot domino reaction of tryptamines, alkyl propiolates and 2-aryl-3-nitro-2H-chromenes. Under similar conditions, the one-pot reaction of tryptamines, alkyl propiolates and β-nitroalkenes resulted in functionalized tetrahydroindolizino[8,7-b]indoles. The reaction mechanism involved sequential generation
通过色胺、丙炔酸烷基酯和2-芳基-3-硝基-2的一锅多米诺反应,方便、高产率地合成了功能化四氢苯并[4',3':2,3]吲嗪基[8,7- b ]吲哚H-色烯。在相似的条件下,色胺、丙炔酸烷基酯和β-硝基烯烃的一锅反应生成了功能化的四氢吲哚并[8,7- b ]吲哚。反应机理包括β-烯胺酯的连续生成、Michael加成、Pictet-Spengler反应和成环过程。该反应表现出较高的原子经济性并达到了可持续化学的目标。
Facile construction of 1,2,6,7,12,12b-hexahydroindolo[2,3-a]quinolizines via one-pot three-component reactions of tryptamines, propiolate, and α,β-unsaturated aromatic aldehydes or ketones
作者:Jing Sun、Li-Li Zhang、Chao-Guo Yan
DOI:10.1016/j.tet.2013.04.100
日期:2013.7
ZnCl2 the one-pot three-component reaction of tryptamines, propiolates, and α,β-unsaturated aldehydes as well as arylideneacetones afforded the functionalized 1,2,6,7,12,12b-hexahydroindolo[2,3-a]quinolizines in moderate to high yields and with high diastereoselectivity. The reaction mechanism involved the sequential Michael addition and Pictet–Spengler reactions of β-enamino ester generated in situ
在无水ZnCl 2的存在下,色胺,丙酸酯和α,β-不饱和醛以及亚芳基丙酮的一锅三组分反应提供了功能化的1,2,6,7,12,12b-六氢吲哚[2, 3- a ]喹啉嗪,中等至高收率,具有高非对映选择性。反应机理包括原位生成的β-烯胺酯的顺序Michael加成反应和Pictet-Spengler反应。
Massiot, G., Bulletin des Societes Chimiques Belges, 1990, vol. 99, # 9, p. 717 - 728