Synthesis of Linear α,β-Unsaturated Amides from Isocyanates and Alkenylaluminum Reagents
作者:Xiao-Feng Wu、Bo Chen
DOI:10.1055/s-0037-1610753
日期:2020.5
A new approach has been developed for the synthesis of linear α,β-unsaturated amides by the direct coupling of isocyanates with alkenylaluminum reagents. At room temperature, the desired α,β-unsaturated amides were isolated in good to excellent yields with good functional-group tolerance in the absence of any catalyst or additive.
Direct transformation of arylpropynes to acrylamides via a three-step tandem reaction
作者:Jun Qiu、Ronghua Zhang
DOI:10.1039/c3ob42444h
日期:——
arylpropynes and hydroxylamine hydrochloride through sp3 C–H and C–C bond cleavage has been achieved with DDQ as an oxidant. The mechanistic study shows that the acrylamides are formed through a three-step tandem sequence, including cross-dehydrogenative-coupling (CDC) reaction, aza-Meyer–Schuster rearrangement and Beckmannrearrangement.