Mild and Efficient Preparation of Arylphosphonium and Arylammonium Salts under Aqueous Conditions at Room Temperature Using Pseudocyclic Arylbenziodoxaboroles as Aryne Precursors

Pseudocyclic arylbenziodoxaboroles are unique aryne precursors under neutral aqueous conditions that selectively react with tertiary organic phosphines or amines at room temperature to form the corresponding aryl-substituted quaternary phosphonium or ammonium salts in high yields. This reaction has been further extended to the preparation of tetraarylarsonium and tetraarylstibonium salts.