DDQ-promoted direct transformation of benzyl hydrocarbons to amides via tandem reaction of the CDC reaction and Beckmann rearrangement
作者:Jun Qiu、Ronghua Zhang
DOI:10.1039/c3ob41218k
日期:——
An atom-efficient and transition metal-free approach to amides from the corresponding benzyl hydrocarbons through C–H and C–C bond cleavage has been developed. Mechanistic studies have shown that a DDQ-promoted cross-dehydrogenative coupling (CDC) reaction with subsequent oxidation and rearrangement are involved in this transformation.
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
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.
作者:Saumya Verma、Vikram Singh、Jawahar L. Jat、Bhoopendra Tiwari
DOI:10.1021/acs.joc.3c02478
日期:2024.6.7
The Beckmann reaction is one of the most atom-economical methods for the preparation of amides from ketones. Unlike ketones, the multiple competing reactivities of enones as well as the requirement of demanding reaction conditions for in situ generation of oximes have severely impacted the application of this reaction for the preparation of α,β-unsaturated amides. Herein, we describe the first chemoselective
Design, synthesis, antiviral evaluation, and In silico studies of acrylamides targeting nsP2 from Chikungunya virus
作者:Beatriz Gois de Souza、Shweta Choudhary、Gabriel Gomes Vilela、Gabriel Felipe Silva Passos、Clara Andrezza Crisóstomo Bezerra Costa、Johnnatan Duarte de Freitas、Grazielle Lobo Coelho、Júlia de Andrade Brandão、Leticia Anderson、Ênio José Bassi、João Xavier de Araújo-Júnior、Shailly Tomar、Edeildo Ferreira da Silva-Júnior