Dimethylformamide → HCID 19935434, compound

Participants

Reaction Conditions

Reaction Steps

The starting material was prepared as follows: A. 45 ml of dimethylformamide were treated under an argon atmosphere with 16.2 ml of phosphorus oxychloride. After the reaction had faded away, 7.30 g of 2,3,4,5-tetrahydro-1-methyl-1H-1-benzazepine were added and the reaction mixture was stirred at 70° C. for 5 hours. Thereafter, the mixture was poured on to ice, made alkaline with sodium hydroxide solution, extracted with ether, washed with water, dried and evaporated. Chromatorgraphy on silica gel (petroleum ether/ethyl acetate (87:13)) yielded 4.38 g of 2,3,4,5-tetrahydro-1-methyl-1H-1-benzazepine-7-carboxaldehyde.

Provenance & Evidence