A greatly improved, reliable protocol for the palladium-catalyzed cross-coupling of dialkyl phosphites with aryl bromides has been developed. The use of an alcoholic solvent was the key to high yields in the synthesis of a broad variety of arylphosphonates, with Pd(OAc)2/PPh3 as the catalyst and a sterically demanding tertiary amine as the base.
在
钯催化下,二烷基膦与芳基
溴化物发生交叉偶联的可靠方案得到了极大的改进。以 Pd(OAc)2/PPh3 为催化剂,以立体要求较高的叔胺为碱,使用
酒精溶剂是合成多种芳基
膦酸盐的高产率关键。