Diethyl Ether → HCID 68420583, compound

Participants

Reaction Steps

To a solution of 7-chloro-3,4,5,6-tetrahydro-2H-azepine (1.32 g, 10 mmol, J. Med. Chem. 30, 1543-49) in benzene (20 ml) was added 2-bromo-benzoic acid hydrazide (1.08 g, 5 mmol) and the mixture was stirred at reflux temperature for 5 hrs. To the cooled reaction mixture was added 10% sodium hydroxide (10 ml) and diethyl ether (20 ml). The mixture was stirred for 30 min., the precipitate filtered off and dried in vacuo at 50° C. for 1 hr. affording 0.6 g of 2-bromo-benzoic acid-N′-(4,5,6,7-tetrahydro-3H-azepin-2-yl)-hydrazide which was dissolved in ethanol (20 ml) followed by addition of TEA (5 ml) and refluxed for 16 hrs. The volatiles were evaporated in vacuo and to the residue was added diethyl ether (10 ml) and ethyl acetate (5 ml). The precipitate was filtered off and dried in vacuo at 50° C. for 1 hr affording 0.35 g (24%) of the title compound as a solid.

Provenance & Evidence