Reaction of 2-chloroindole-3-carbaldehyde with epihalogenohydrins. Tandem oxirane-opening—1,3-oxazole-closure process
作者:Konstantin F. Suzdalev、Sophia V. Den’kina、Gennadii S. Borodkin、Valerii V. Tkachev、Mikhail A. Kiskin、Mikhail E. Kletsky、Oleg N. Burov
DOI:10.1016/j.tet.2011.09.015
日期:2011.11
Reaction of 2-chloroindole-3-carbaldehyde with epibromohydrin gives the expected 1-(oxiran-2-ylmethyl) derivative. However the analogous reaction with epichlorohydrin leads to the formation of the oxazolo[3,2-a]indole skeleton. Some chemical properties of this tricyclic system were investigated. Its reaction with secondaryamines unexpectedly proceeds with the opening of the oxazole ring.
2-氯吲哚-3-甲醛与表溴醇的反应生成了预期的1-(环氧乙烷-2-基甲基)衍生物。然而,与表氯醇的类似反应导致恶唑并[3,2- a ]吲哚骨架的形成。研究了该三环体系的一些化学性质。其与仲胺的反应意外地随着恶唑环的打开而进行。
Formation of the same pyrimido[1,2- a ]indoles from 1-(oxiran-2-ylmethyl)-1 H -indole or [1,3]oxazolo[3,2- a ]indole derivatives in its reactions with aromatic amines
作者:Konstantin F. Suzdalev、Sophia V. Den'kina、Valerii V. Tkachev
DOI:10.1016/j.tet.2013.07.074
日期:2013.10
Reactions of two isomers—2-chloro-1-(oxiran-2-ylmethyl)-1H-indole-3-carbaldehyde or 2-(chloromethyl)-2,3-dihydro[1,3]oxazolo[3,2-a]indole-9-carbaldehyde with aromatic amines lead to the same products in both cases—hydrochlorides of pyrimido[1,2-a]indole derivatives containing two fragments of an amine per one part of the indole nucleus. Its structure was confirmed by X-ray analysis of the crystals
两种异构体-2-氯-1-(环氧乙烷-2-基甲基)-1的反应ħ -吲哚-3-甲醛或2-(氯甲基)-2,3-二氢[1,3]恶唑并[3,2-一个]吲哚-9-甲醛与芳族胺导致相同的产品在嘧啶并[1,2的这两种情况下,盐酸盐一含有每吲哚核的一部分的胺的两个片段]吲哚衍生物。它的结构是由晶体碱的X射线分析确认,通过将反应产物的碱处理而得到(当芳基是4-MeOC 6 H ^ 4)。