Reactive & Functional Polymers, Vol.26, No.1, 25-33, 1995
Silica-supported hexaalkylguanidinium chloride: An efficient stable catalyst for phosgenation of carboxylic acids
Silica-supported hexaalkylguanidinium chlorides have been built up and used as catalysts for phosgenation of carboxylic acids. They have been found to be more efficient and stable than their polystyrene homologs and more active than their ammonium and phosphonium analogs.