The addition of Grignardreagents to ketones is significantly enhanced by cerium chloride with remarkable suppression of side reactions, particularly enolization. Some esters, which are prone to side reactions, also react readily with Grignardreagents in the presence of cerium chloride to give normal reaction products in reasonable to high yields.
Carbonylative Hydroacylation of Styrenes with Alkyl Halides by Multiphoton Tandem Photoredox Catalysis in Flow
作者:José A. Forni、Vir H. Gandhi、Anastasios Polyzos
DOI:10.1021/acscatal.2c02531
日期:2022.8.19
The abundance, structural diversity, and versatility of ketones give prominence to this carbonyl functional group in synthetic chemistry. The assembly of ketones via the carbonylative hydroacylation of alkenes represents a powerful modular strategy for the synthesis of unsymmetric ketone products. Here, we report the photocatalytic carbonylative hydroacylation of styrenes with unactivated alkyl halides