A mild and efficient acetylation of alcohols, phenols and amines with acetic anhydride using La(NO3)3·6H2O as a catalyst under solvent-free conditions
作者:T. Srikanth Reddy、M. Narasimhulu、N. Suryakiran、K. Chinni Mahesh、K. Ashalatha、Y. Venkateswarlu
DOI:10.1016/j.tetlet.2006.07.059
日期:2006.9
A wide variety of alcohols, phenols and amines are efficiently and selectively converted into the corresponding acetates by treatment with acetic anhydride in the presence of catalytic amounts of La(NO3)3·6H2O under solvent-free conditions at room temperature. The method is compatible with acid sensitive hydroxyl protecting groups such as TBDMS, THP, OBz, OBn, Boc and some isopropylidenes and offers
在室温下,在无溶剂条件下,在催化量的La(NO 3)3 ·6H 2 O的存在下,通过用乙酸酐处理,可以将各种醇,酚和胺有效,选择性地转化为相应的乙酸酯。该方法与酸敏感的羟基保护基团(例如TBDMS,THP,OBz,OBn,Boc和一些异丙叉)兼容,并提供1,3-,1,4-和1,5-二醇单乙酸酯的优异收率。