Brønsted acid sites in the Beta zeolite induced highly efficient amidation of styrene in the aqueous phase
作者:Jiteng Liu、Xueqin Jia、Lei Zhang、Wenqian Fu
DOI:10.1039/d3nj05870k
日期:——
an environmentally friendly catalyst system is a highly attractive strategy for organicsynthesis. In this work, a H-form mesoporous Beta (H-MBeta) zeolite with an irregular spherical particle shape was synthesized and was found to realize the directamidation of styrene and nitriles for the synthesis of N-alkylated amides in the aqueous phase. This strong acidic H-MBeta catalyst exhibited superior activity
A convenient and user-friendly method to yield benzamides from primary and secondary amines and various benzylic alcohols in the presence of a cheap iron salt (FeCl2 center dot 4H(2)O) and tert-butylhydroperoxide (70% in water) as a stoichiometric oxidant is described. Control experiments indicated that this reaction might involve radical species. This method proved to be general, generating a family of 30 benzamides and was applied to the preparative synthesis of anti-anxiety drug moclobemide. (C) 2014 Published by Elsevier Ltd.