Synergistic Photoredox/Nickel Coupling of Acyl Chlorides with Secondary Alkyltrifluoroborates: Dialkyl Ketone Synthesis
作者:Javad Amani、Gary A. Molander
DOI:10.1021/acs.joc.6b02897
日期:2017.2.3
Visiblelightphotoredox/nickel dual catalysis has been employed in the cross-coupling of acyl chlorides with potassium alkyltrifluoroborates. This protocol, based on single-electron-mediated alkyl transfer, circumvents the restriction of using reactive alkylmetallic nucleophiles in transition-metal-catalyzed acylation and achieves a mild and efficient method for the synthesis of unsymmetrical alkyl
Direct Addition of Grignard Reagents to Aliphatic Carboxylic Acids Enabled by Bulky
<i>turbo</i>
‐Organomagnesium Anilides
作者:Kilian Colas、A. Catarina V. D. dos Santos、Stefanie V. Kohlhepp、Abraham Mendoza
DOI:10.1002/chem.202104053
日期:2022.2.16
Adding the right amount: The addition of Grignard nucleophiles to carboxylic acids is made difficult by the lower nucleophilicity of these abundant organometallics, the low electrophilicity of carboxylate anions, and the faster over-addition to any ketones produced. Herein we introduce a simple magnesium anilide additive that enhances the nucleophilicity of Grignardreagents towards aliphatic carboxylates