N, N', N''-TRIS-(3-DIMETHYLAMINOPROPYL)-GUANIDINE. THE PROCEDURE OF PREPARATION FROM CARBODIIMIDE AND APPLICATION IN REACTIONS OF TRANSESTERIFICATION OF OIL

摘要

The present invention provides procedures for preparation of N, N', N''-tris-(3-dimethylaminopropyl)-guanidine by addition of 3-dimethylaminopropylamine to N1, N3-bis-(3-dimethylaminopropyl)-carbodiimide. The latter compound was prepared in two steps starting from commercially available 3-dimethylaminpropyl amine and carbon disulfide followed by desulfurization of the formed thiourea with yellow mercury(II)-oxide. The so obtained guanidine derivative was successfully applied as catalyst in the transesterification of sunflower, soybean and rapeseed oil.