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Abstract An efficient method to synthesize functionalized tetraarylphosphonium salts is described. The nickel‐catalyzed coupling reaction between aryl iodides, bromides, chlorides, or triflates and triphenylphosphine generates tetraarylphosphonium salts in high yields. The coupling is wide in scope and tolerates a variety of functional groups such as alcohols, amides, ketones, aldehydes, phenols, phosphines and amines.
Marcoux et al. (2008) studied this question.