摘要:
A simple method for the synthesis of sweet tasting N,N',N"-trisubstituted guanidines is described. The key intermediate, carbonimidoyl dichloride 6, was prepared using a known method. Reaction of 6 with cyclooctylamine followed by the sodium salt of 5-aminomethyltetrazole or the sodium salt of glycine afforded the desired guanidine. When the carbonimidoyl dichloride was allowed to react with (S)-alpha-phenethylamine followed by the sodium salt of glycine, the guanidine sweetener 2 was obtained.