An efficient, inexpensive, and mild method for the synthesis of amidoalkyl naphthols, catalyzed by ‘silicasulfuricacid’ (SSA), was elaborated under solvent-free conditions at room temperature. Various amidoalkyl naphthols were synthesized in high yields from aromatic or aliphatic aldehydes, α- or β-naphthols, and amides or urea or thiourea.
Hafnium (IV) bis(perfluorooctanesulfonyl)imide complex catalyzed direct amidomethylation for the synthesis of 1-(arylamido)-methyl-2-naphthols in fluorous medium
作者:Mei Hong、Chun Cai、Wen Bin Yi
DOI:10.1016/j.cclet.2010.10.046
日期:2011.3
Abstract Hafnium (IV) bis(perfluorooctanesulfonyl)imide complex is found to be an efficient catalyst for the multicomponent condensation of β-naphthol, aromatic aldehydes and urea or amides in perfluorodecalin to afford the corresponding substituted amidomethyl naphthols in good yields. The remarkable features of this new procedure are high yields, shorter reaction times, reusability of catalyst and