Selective Formation of 2,3,5‐Trisubstituted Furans from 1,3‐Dicarbonyls and Hydroxyketones
作者:Wanying Yan、Jiaru Shou、Wenyi Qin、Jiayu Mo、Huawen Huang
DOI:10.1002/adsc.202300860
日期:2023.11.21
Chemoselective cyclizations of 1,3-dicarbonyl compounds with hydroxyketones for the selective formation of two 2,3,5-trisubstituted furans have been reported. While TsOH-mediated cyclization in DCM afforded 2-acylfurans, the additional copper catalyst in acetone turned over the selectivity for the generation of 3-acylfurans. The featured advantages of both reactions include simple conditions, high
已经报道了 1,3-二羰基化合物与羟基酮的化学选择性环化,以选择性形成两个 2,3,5-三取代呋喃。虽然 DCM 中 TsOH 介导的环化反应生成 2-酰基呋喃,但丙酮中额外的铜催化剂却改变了 3-酰基呋喃生成的选择性。两种反应均具有条件简单、收率高、底物范围广、克数可扩展、副产物为H 2 O等特点。