[EN] PHOSPHONIUM SALTS DERIVATIVES AND THEIR USE AS SOLUBILITY CONTROLLING AUXILIARIES [FR] DERIVES DE SELS DE PHOSPHONIUM, UTILISATION DE CES DERNIERS EN TANT QU'ADJUVANTS DE REGULATION DE LA SOLUBILITE
Removal, Recovery, and Recycling of Triarylphosphonium-Supported Tin Reagents for Various Organic Transformations
摘要:
Phosphonium-supported tin reagents and catalysts were prepared and were shown to be effective in Stille couplings, radical dehalogenations, radical cyclizations, and carbonyl allylations. Not only could the tin residues be removed from the crude reaction mixture through a phase separation process but also they could be recovered and recycled.
Palladium-Catalyzed Synthesis of Functionalized Tetraarylphosphonium Salts
作者:David Marcoux、André B. Charette
DOI:10.1021/jo702355c
日期:2008.1.1
An efficient method to synthesize functionalized tetraarylphosphoniumsalts is described. This palladium-catalyzed coupling reaction between aryl iodides, bromides, or triflates and triphenylphosphine generates phosphonium salts in high yields. The coupling is compatible with a variety of functional groups such as alcohols, ketones, aldehydes, phenols, and amides.