Formation of Chromene Analogs of Homophthalates: Investigation of Condensation Products Derived from 2-Hydroxybenzaldehydes and Diethyl 2-Pentenedicarboxylates
作者:Seetharamaiyer Padmanabhan、Kaustubh V. Gavaskar、David J. Triggle
DOI:10.1080/00397919608004618
日期:1996.8
Abstract Condensation of substituted 2-hydroxybenzaldehyde derivatives (1a-1) with diethyl 2-pentenedicarboxylate (2) in the presence of piperidine gave coumarin and / or chromene derivatives. Attempted reaction of 4-N,N-diethylamino-2-hydroxybenzaldehyde (1a) and 2-hydroxy-3-nitrobenzaldehyde (1i) with diethyl 3-phenyl-2-pentenedicarboxylate (5) led to formation of no coumarin or chromene derivative
摘要 取代的 2-羟基苯甲醛衍生物 (1a-1) 与 2-戊烯二羧酸二乙酯 (2) 在哌啶存在下缩合得到香豆素和/或色烯衍生物。4-N,N-二乙氨基-2-羟基苯甲醛 (1a) 和 2-羟基-3-硝基苯甲醛 (1i) 与 3-苯基-2-戊烯二甲酸二乙酯 (5) 的尝试反应导致没有香豆素或色烯衍生物的形成。