The first example of a palladium-catalyzed aerobic oxidative coupling of acyl chlorides with arylboronic acids has been developed, leading to a wide range of aryl benzoates in good to excellent yields. This catalytic system shows broad functional group tolerance. Preliminary mechanistic experiments using deuterium labeling showed that the oxygen atom was derived from dioxygen.
Efficient Method for the Preparation of Inverted Alkyl Carboxylates and Phenyl Carboxylates via Oxidation–Reduction Condensation Using 2,6-Dimethyl-1,4-benzoquinone or Simple 1,4-Benzoquinone
Oxidation–reduction condensation using in situ formed alkoxydiphenylphosphines, 2,6-dimethy-1,4-benzoquinone, and carboxylic acids provides a useful method for the preparation of inverted tertiary ...
Pd‐Catalyzed Synthesis of Aryl Esters Involving Difluorocarbene Transfer Carbonylation
作者:Lu Wang、Chengxian Hu、Xue Yang、Ying Fu、Zhengyin Du
DOI:10.1002/ejoc.202400032
日期:2024.3.11
An effective approach of Pd-catalyzed aryl halides, phenols to access of arylesters is developed by difluorocarbene as a carbonyl source. This enables the three-component reaction to be formed directly one C−O, one C=O and one C−C bonds in a one-pot, one-step reaction, without extra separating and purifying the intermediate product.