Synthesis And Characterisation Of /V-Fljnctionalized Enetetramines,And Their Properties

摘要

Two general routes are described for the synthesis of the title compounds from the reaction of,either the dimethyl acetal of (N,N'-dimethylformamide and an appropriate N,N'bis(secondary amine),or sodium hydride (or potassium tert-butoxide) and 4,5-dihydroimidazolium salts.N-Functionalized enetetramines (3,8) having 2-methoxyethyl or allyl substituent on the N-atom have been made.The reaction of this enetetramines with S_8 and Se.gave the corresponding cyclic chalcogeno ureas derivatives (4,5).Treatment of potassium tert-butoxide with 1,1 '-ethylene-3,3'-diallyldiimidazolidinium dibromide (7) afforded,either the enctetramine (8),or,alternatively,the amino-Claisen isomer (9).All new compounds were identified by ~1H,~(13)C NMR,FT-IR and micro analysis.