Mono C-alkylation and mono C-benzylation of barbituric acids through zinc/acid reduction of acyl, benzylidene, and alkylidene barbiturate intermediates
作者:Branko S. Jursic、Edwin D. Stevens
DOI:10.1016/s0040-4039(03)00111-4
日期:2003.3
Through systematic exploration of reaction conditions, very efficient preparative procedures for obtaining large quantities of substituted 5-alkyl and 5-benzylbarbituric acids were developed. The procedure involves a two step preparation in which the second step is zinc dust/acid reduction. For preparation of 5-alkylbarbiturates, the first step is the preparation of either 5-acyl or 5-alkylidenebarbiturate
Reductive C-alkylation of barbituric acid derivatives with carbonyl compounds in the presence of platinum and palladium catalysts
作者:Branko S Jursic、Donna M Neumann
DOI:10.1016/s0040-4039(01)00621-9
日期:2001.6
Effective synthetic procedures for the preparation of mono- and di-C-alkylated barbituricacidderivatives through palladium and platinum catalytic hydrogenation of solutions of barbituricacids (unsubstituted, N-mono, and N,N′-disubstituted barbituricacids) and carbonyl compounds (aliphatic and aromatic aldehydes and ketones).