Phosphomolybdic Acid Supported on Silica Gel: An Efficient, Mild and Reusable Catalyst for the Chemoselective Hydrolysis of Acetonides
作者:J. S. Yadav、S. Raghavendra、M. Satyanarayana、E. Balanarsaiah
DOI:10.1055/s-2005-872701
日期:——
Carbohydrate acetonides were chemoselectively cleaved to the corresponding diols by using environmentally benign phosphomolybdic acid (H3PMo12O40) supported on silica gel (PMA-SiO2) at ambient temperature in a short span of 5-7 minutes in acetonitrile. Acid-labile protective groups such as THP, TBS, TBDPS, MOM, OMe and PMB were found to be stable under the reaction conditions.
碳水化合物乙缩醛在环境友好的负载型磷钼酸(H3PMo12O40/硅胶,简称PMA-SiO2)作用下,于室温、乙腈溶液中仅需5至7分钟即可选择性地裂解为相应的二醇。在这种反应条件下,如THP、TBS、TBDPS、MOM、OMe和PMB等对酸不稳定的保护基团均能保持稳定。