Flow Microreactor Technology for Taming Highly Reactive Chloroiodomethyllithium Carbenoid: Direct and Chemoselective Synthesis of α-Chloroaldehydes
作者:Pantaleo Musci、Marco Colella、Alessandra Sivo、Giuseppe Romanazzi、Renzo Luisi、Leonardo Degennaro
DOI:10.1021/acs.orglett.0c01085
日期:2020.5.1
straightforward flow synthesis of α-chloro aldehydes has been developed. The strategy involves, for the first time, the thermal unstable chloroiodomethyllithium carbenoid and carbonyl compounds. A batch versus flow comparative study showcases the superb capability of flow technology in prolonging the lifetime of the lithiated carbenoid, even at -20 °C. Remarkably, the high chemoselectivity realized in flow
已经开发了α-氯醛的直接流式合成。该策略首次涉及热不稳定的氯碘甲基锂类胡萝卜素和羰基化合物。批处理与流量比较研究表明,即使在-20°C的条件下,流量技术也能延长锂化类胡萝卜素的使用寿命。值得注意的是,在流动中实现的高化学选择性允许制备传统的分批方法不易获得的多官能化的α-氯醛。