An efficient synthesis of novel functionalized benzo[h]pyrano[2,3-b]quinolines and pyrano[2,3-b]quinoline derivatives via one-pot multicomponent reactions
作者:Abdolali Alizadeh、Azar Rostampoor
DOI:10.1007/s13738-021-02376-9
日期:2022.4
catalyst and simple workup procedure (the pure products were obtained simply by washing the products with EtOH). A series of pyrano[2,3-b]quinoline and benzo[h]pyrano[2,3-b]quinoline derivatives have been synthesized in excellent yields (65–98%) via a one-pot three-component reaction of (2-chloroquinoline-3-carbaldehyde, 2-chlorobenzo[h]quinoline-3-carbaldehyde) and 1-phenyl-2-(1,1,1-triphenyl-λ5-phosphanylidene)ethan-1-one
在本文中,介绍了一种方便的一锅法,用于直接合成吡喃并[2,3-b]喹啉和苯并[h]吡喃并[2,3-b]喹啉衍生物,包括三组分反应(2-氯喹啉-3-甲醛、2-氯苯并[h]喹啉-3-甲醛)和 1-苯基-2-(1,1,1-三苯基-λ5-亚膦)乙烷-1-酮(Wittig试剂)与活性亚甲基化合物如(苯甲酰乙腈、二甲酮、1,3-二甲基巴比妥酸、4-羟基香豆素和3-甲基-1-苯基-1H-吡唑-5(4H)-one),在两个过程中C-C 键形成(迈克尔加成)和分子内环化(通过活性亚甲基化合物的氧原子的攻击)。该协议的优点包括易于获得的起始材料、出色的收率 (65–98%)、没有金属催化剂和简单的后处理程序(通过用 EtOH 洗涤产品简单地获得纯产品)。通过一锅三组分反应( 2-氯喹啉-3-甲醛、2-氯苯并[h]喹啉-3-甲醛)和 1-苯基-2-(1,1,1-三苯基-λ5-亚膦亚基)乙烷-1-酮(维蒂希试剂)