Conformational Flexibility as a Tool for Enabling Site-Selective Functionalization of Unactivated <i>sp</i><sup><i>3</i></sup> C–O Bonds in Cyclic Acetals
作者:Ciro Romano、Laura Talavera、Enrique Gómez-Bengoa、Ruben Martin
DOI:10.1021/jacs.2c04513
日期:2022.7.6
A dual catalytic manifold that enables site-selective functionalization of unactivated sp3 C–O bonds in cyclic acetals with aryl and alkyl halides is reported. The reaction is triggered by an appropriate σ*–p orbital overlap prior to sp3 C–O cleavage, thus highlighting the importance of conformational flexibility in both reactivity and site selectivity. The protocol is characterized by its excellent
报道了一种双催化歧管,它能够用芳基和烷基卤化物对环状缩醛中未活化的sp 3 C-O 键进行位点选择性功能化。该反应是由在sp 3 C-O 裂解之前适当的 σ*-p 轨道重叠触发的,因此突出了构象灵活性在反应性和位点选择性中的重要性。该协议的特点是其出色的化学选择性特征,从而为激活强σ sp 3 C-O 键提供了新的前景。