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。
Annulation reaction of methyl 2-(benzo[ b ][1,4]thiazin-3-ylidene)acetate with β -nitrostyrenes and 3-nitrochromenes
作者:Quan-Shun Sun、Jing Sun、Wang Jiang、Chao-Guo Yan
DOI:10.1016/j.tet.2018.01.027
日期:2018.3
The acid catalyzed domino reaction of β-nitrostyrenes with methyl 2-(benzo[b][1,4]thiazin-3-ylidene)acetate, which were previously prepared from the cyclization of 2-aminobenzenethiol and methyl 4-chloroacetoacetate, resulted in 2-arylbenzo[b]pyrrolo[1,2-d][1,4]thiazine-3-carboxylates in high yields. Under same reaction conditions, the similar reaction with 3-nitrochromenes afforded corresponding benzo[b]chromeno[4′
β-硝基苯乙烯与2-(苯并[ b ] [1,4]噻嗪-3-亚丙基)乙酸甲酯的酸催化多米诺反应,该反应是由2-氨基苯硫醇和4-氯乙酰乙酸甲酯的环化反应制得的。 2-芳基苯并[ b ]吡咯并[1,2- d ] [1,4]噻嗪-3-羧酸盐的收率很高。在相同的反应条件下,与3-硝基色酮的相似反应以良好的收率得到相应的苯并[ b ]铬基[4',3':4,5]吡咯并[1,2- d ] [1,4]噻嗪衍生物。
Convenient Synthesis of Functionalized 3,4,10,11-tetrahydroindolo[1,2-a]Quinoxalines Via Three-component Reaction of Dimedone, 3-nitrochromenes and Ammonium Acetate
作者:Jun Fang、Chao-Guo Yan
DOI:10.1002/jhet.2345
日期:2016.5
An efficient synthetic procedure for the functionalized 3,4,10,11‐tetrahydroindolo[1,2‐a]quinoxalines was successfully developed by the three‐component reaction of dimedone, 3‐nitrochromenes, and ammoniumacetate in ethanol. This reaction has the advantages of using common starting material, short reaction process, and good yields high‐atom efficiency.
One-pot Sequential Reaction for the Synthesis of Polysubstituted 3-(3-Nitro-2-phenylchroman-4-yl)-3-arylaminoacrylates
作者:Lili Zhang、Jing Sun、Chaoguo Yan
DOI:10.1002/cjoc.201300547
日期:2013.12
AbstractThe one‐pot sequential reaction of arylamines, methyl propiolate and 2‐aryl‐3‐nitrochromenes without any catalyst in refluxing ethanol afforded the polysubstituted 3‐(3‐nitro‐2‐phenylchroman‐4‐yl)‐3‐arylaminoacrylates in good yields and with high diastereoselectivity. Reaction mechanism was believed involving the initial formation of β‐enamino ester and sequential Michael addition.