Dimethylformamide → 3-(1-Benzylpiperidin-4-yl)-7-methoxy-1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one

Participants

Reaction Conditions

Reaction Steps

35.0 g (216 mmol) N,N′-carbonyldiimidazole were added to 23.9 g (70.3 mmol) [2-(2-amino-5-methoxyphenyl)-ethyl]-(1-benzylpiperidin-4-yl)-amine in 175 mL DMF and the mixture was stirred for 2 h at 100° C. The reaction mixture was poured onto approx. 1 kg ice water and stirred overnight. The precipitated product was suction filtered, washed with water and dried. The residue was stirred with DIPE and suction filtered. The solid product was washed with DIPE and dried.

Provenance & Evidence