G. Gelbard et F. Vielfaurejoly, POLYNITROGEN STRONG BASES - 1-NEW SYNTHESES OF BIGUANIDES AND THEIR CATALYTIC PROPERTIES IN TRANSESTERIFICATION REACTIONS, Tetrahedron letters, 39(18), 1998, pp. 2743-2746
A new and convenient method has been developed for the synthesis of so
luble and polystyrene-supported biguanides by the nucleophilic additio
n of guanidines such as TMG and TDB to diisopropyl-, dicyclohexyl- and
polymericarbodi-imide. These biguanides are excellent catalysts for t
he transesterification. (C) 1998 Published by Elsevier Science Ltd. Al
l rights reserved.