Synthesis of Unsymmetrical Ketones by Palladium-Catalyzed Cross-Coupling Reaction of Carboxylic Anhydrides with Organoboron Compounds
作者:Ryuki Kakino、Sayaka Yasumi、Isao Shimizu、Akio Yamamoto
DOI:10.1246/bcsj.75.137
日期:2002.1
anhydrides to zerovalent palladium complexes to yield acyl(carboxylato)bis(tertiary phosphine)palladium(II) complexes and their reactions with organoboronic acids to yield ketones, a novel catalytic process has been developed. This converts carboxylic anhydrides and organoboron compounds into ketones catalyzed by palladium complexes under mild conditions. The process provides a general, versatile, synthetic
在对羧酸酐与零价钯配合物氧化加成生成酰基(羧基)双(叔膦)钯 (II) 配合物及其与有机硼酸反应生成酮的基础研究的基础上,开发了一种新的催化工艺。这在温和条件下将羧酸酐和有机硼化合物转化为由钯配合物催化的酮。该方法提供了一种通用的、通用的合成方法来生产具有芳香族、脂肪族和杂环基团的各种对称和不对称酮。建议催化循环包括(a)羧酸酐的氧化加成以产生酰基(羧基)钯中间体,(b)与有机硼化合物进行金属转移以产生酰基(有机)钯中间体,(c) 还原消除生成酮。发现不仅均相催化剂体系而且非均相体系在温和条件下产生酮。