Stereoselective synthesis of δ-amino-α,β,γ,δ-unsaturated cycloketones via Mannich-type reaction
作者:Long He、Xue Qin、Xiao-Yan Qin、Chun-Lan He、Shi-Da Wang、Wen-Juan Hao、Bo Jiang
DOI:10.1016/j.tetlet.2020.151799
日期:2020.4
A new Mannich-type reaction of aryl propiolaldehydes with benzofuran-3(2H)-one and cyclic secondary amines was established, enabling a completely stereoselective protocol to access a series of unreported δ-amino-α,β,γ,δ-unsaturated cycloketones in generally good yields. This approach could tolerate various cyclic secondary amines including four-, five-, six-membered and bicyclic rings with water as
建立了一种新的Mannich型芳基丙醛与苯并呋喃3(2 H)-一和环状仲胺的反应,从而实现了完全立体选择的方案,可访问一系列未报告的δ-氨基-α,β,γ,δ-不饱和环酮通常收率良好。这种方法可以耐受以水为主要副产物的各种环状仲胺,包括四元,五元,六元和双环。