Manganese(I) Catalyzed α-Alkenylation of Amides Using Alcohols with Liberation of Hydrogen and Water
作者:Biplab Keshari Pandia、Chidambaram Gunanathan
DOI:10.1021/acs.joc.1c00685
日期:2021.8.6
Herein, unprecedented manganese-catalyzed direct α-alkenylation of amides using alcohols is reported. Aryl amides are reacted with diverse primary alcohols, which provided the α,β-unsaturated amides in moderate to good yields with excellent selectivity. Mechanistic studies indicate that Mn(I) catalyst oxidizes the alcohols to their corresponding aldehydes and also plays an important role in efficient
Condensation of lithium diphenylphosphonium diylides with carbonic anhydride derivatives. A new one-pot synthesis of α,β-unsaturated anilides and amidines.
and dicyclohexylcarbodiimide. The formed semi-stabilised ylides bear a metallated amide or amidine function. Their use in situ as Wittig reagents towards aldehydes and ketones is shown to be a new one-pot, E-stereoselective synthesis for αβ-unsaturated anilides and amidines. Moreover, the corresponding phosphonium salts were isolated.