Guanidinophosphazenes: design, synthesis, and basicity in THF and in the gas phase

…, E Lork, GV Röschenthaler, I Kaljurand…

Index: Kolomeitsev, Alexander A.; Koppel, Ilmar A.; Rodima, Toomas; Barten, Jan; Lork, Enno; Roeschenthaler, Gerd-Volker; Kaljurand, Ivari; Kuett, Agnes; Koppel, Ivar; Maeemets, Vahur; Leito, Ivo Journal of the American Chemical Society, 2005 , vol. 127, # 50 p. 17656 - 17666

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Citation Number: 70

Abstract

A principle for creating a new generation of nonionic superbases is presented. It is based on attachment of tetraalkylguanidino, 1, 3-dimethylimidazolidine-2-imino, or bis (tetraalkylguanidino) carbimino groups to the phosphorus atom of the iminophosphorane group using tetramethylguanidine or easily available 1, 3-dimethylimidazolidine-2-imine. Seven new nonionic superbasic phosphazene bases, tetramethylguanidino-substituted at ...