Copper Catalyzed sp<sup>3</sup> C–H Etherification with Acyl Protected Phenols
作者:Tolani K. Salvador、Charles H. Arnett、Subrata Kundu、Nicholas G. Sapiezynski、Jeffery A. Bertke、Mahdi Raghibi Boroujeni、Timothy H. Warren
DOI:10.1021/jacs.6b09057
日期:2016.12.28
A variety of acyl protected phenols AcOAr participate in sp3 C-H etherification of substrates R-H to give alkyl aryl ethers R-OAr employing tBuOOtBu as oxidant with copper(I) β-diketiminato catalysts [CuI]. Although 1°, 2°, and 3° C-H bonds may be functionalized, selectivity studies reveal a preference for the construction of hindered, 3° C-OAr bonds. Mechanistic studies indicate that β-diketiminato