One-Pot, Three-Component Synthesis of Dialkyl 1,2-Dihydroquinoline-2,3-Dicarboxylates from Triphenylphosphine, Acetylenic Esters, and Amide Derivatives of 2-Aminobenzaldehyde in Aqueous Acetone
作者:Ali Ramazani、Ebrahim Ahmadi、Ali Reza Kazemizadeh、Leila Dolatyari、Nader Noshiranzadeh、Issa Eskandari、Ali Souldozi
DOI:10.1080/104265090921137
日期:2005.11.1
Abstract Protonation of the highly reactive 1:1 intermediates, produced in the reaction between triphenylphosphine and dialkyl acetylenedicarboxylates by amide derivatives of 2-aminobenzaldehyde in the mixture of acetone-water (3:1) leads to vinyltriphenylphosphonium salts, which undergo a Michael addition reaction with a conjugate base to produce the corresponding stabilized phosphorus ylides. An
摘要 在丙酮-水 (3:1) 混合物中,2-氨基苯甲醛的酰胺衍生物在三苯基膦和乙炔二羧酸二烷基酯反应中产生的高反应性 1:1 中间体质子化,生成乙烯基三苯基鏻盐,然后进行迈克尔加成反应与共轭碱生成相应的稳定磷叶立德。稳定的磷叶立德基团与醛基的分子内 Wittig 反应生成相应的 1,2-二氢喹啉-2,3-二羧酸二烷基酯。