Synthesis of 2-Acylphenol and Flavene Derivatives from the Ruthenium-Catalyzed Oxidative C-H Acylation of Phenols with Aldehydes
作者:Hanbin Lee、Chae S. Yi
DOI:10.1002/ejoc.201403518
日期:2015.3
[(C6H6)(PCy3)(CO)RuH]+BF4- has been found to be an effective catalyst for the oxidativeC-H coupling reaction of phenols with aldehydes to give 2-acylphenol compounds. The coupling of phenols with α,β-unsaturated aldehydes selectively gives the flavenederivatives. The catalytic method mediates direct oxidativeC-H coupling of phenol and aldehyde substrates without using any metal oxidants or forming wasteful byproducts
<i>i</i>-Pr<sub>2</sub>NMgCl·LiCl Enables the Synthesis of Ketones by Direct Addition of Grignard Reagents to Carboxylate Anions
作者:Kilian Colas、A. Catarina V. D. dos Santos、Abraham Mendoza
DOI:10.1021/acs.orglett.9b02899
日期:2019.10.4
preparation of ketones from carboxylate anions is greatly limited by the required use of organolithiumreagents or activated acyl sources that need to be independently prepared. Herein, a specific magnesium amide additive is used to activate and control the addition of more tolerant Grignardreagents to carboxylate anions. This strategy enables the modular synthesis of ketones from CO2 and the preparation