Tetraphenylphosphonium bromide CAS 2751-90-8 is a phase transfer catalyst (Phasetransfercatalyst) application is a new technology developed in the past two decades, because it overcomes the shortcomings of the need for Chemicalbook polar aprotic solvents in heterogeneous organic synthesis , and the heterogeneous reaction can be carried out under relatively mild conditions, speeding up the reaction rate and improving the yield, thus greatly promoting the development of organic synthesis.
