TMPZnOPiv•LiCl: A New Base for the Preparation of Air-Stable Solid Zinc Pivalates of Sensitive Aromatics and Heteroaromatics
作者:Christos I. Stathakis、Sophia M. Manolikakes、Paul Knochel
DOI:10.1021/ol400242r
日期:2013.3.15
A wide range of aryl and heteroaryl zinc pivalates bearing sensitive functionalities were prepared by selectivemetalation using TMPZnOPiv•LiCl, a new hindered zinc amide base. The new zincreagents are easy-to-handle solids, which maintain their activity almost entirely (>95%) after 4 h of air exposure and smoothly undergo Negishicross-couplings and reactions with various electrophiles such as Cu(I)-catalyzed