Stable simple enols. 11. Equilibrium constants for the 1-alkyl-2,2-dimesitylethenol/1-alkyl-2,2-dimesitylethanone systems in hexane. The predominance of steric effects on Kenol values
Concave Reagents, 21. Selective Acylations of Primary and Secondary Alcohols by Ketenes
作者:Wolfgang Schyja、Sönke Petersen、Ulrich Lüning
DOI:10.1002/jlac.199619961223
日期:1996.12
Concavepyridines 1 were used to catalyze the addition of primary and secondary alcohols to ketenes 4, and the kinetic data of these catalyses were determined. In inter- and intramolecular competitions the use of 1e–g led to improved selectivities for the acylation of primary alcohols in comparison with secondary alcohols. All primary alcohols react at comparable rates. Observed rate constants were
Stable simple enols. 11. Equilibrium constants for the 1-alkyl-2,2-dimesitylethenol/1-alkyl-2,2-dimesitylethanone systems in hexane. The predominance of steric effects on Kenol values