反应详情

28% Methanolic sodium methoxide (122.2 ml) was added to a solution of guanidine hydrochloride (63.7 g) in dry N,N-dimethylformamide (300 ml) and the mixture was stirred for 20 minutes at ambient temperature. To the mixture was added methyl 3-(2-cyanopyrrol-1-yl)benzoate (30.5 g), and the mixture was stirred for 2 hours at the same temperature. The reaction mixture was poured into water under stirring. The isolated precipitate was collected by filtration to give 2-[3-(2-cyanopyrrol-1-yl)benzoyl]guanidine (21.66 g).

1. stirringthe mixture was stirred for 2 hours at the same temperature
2. stirringunder stirring
3. filtrationThe isolated precipitate was collected by filtration