A Noncoordinating Acid–Base Catalyst for the Mild and Nonreversible <i>tert</i>-Butylation of Alcohols and Phenols
作者:Keith R. Fandrick、Nitinchandra D. Patel、Suttipol Radomkit、Arindom Chatterjee、Stefan Braith、Daniel R. Fandrick、Carl A. Busacca、Chris H. Senanayake
DOI:10.1021/acs.joc.1c00193
日期:2021.3.19
A mild and nonreversible tert-butylation of alcohols and phenols can be achieved in high yields using the noncoordinating acid–base catalyst [bis(trifluoromethane)sulfonimide and 2,6-lutidine] with a tert-butylation reagent, tert-butyl 2,2,2-trichloroacetimidate. This method allows the use of substrates containing acid sensitive groups such as ketal, Boc, and boronate esters.
温和和不可逆的叔醇和酚的-butylation可以以高产率使用非配位酸-碱催化剂[双(三氟甲烷)磺酰亚胺和2,6-二甲基吡啶]用来实现叔-butylation试剂,叔丁基2,2- ,2-三氯乙亚胺酸酯。该方法允许使用包含酸敏感基团的底物,例如缩酮,Boc和硼酸酯。