Hydrochloric Acid → (3S,4S)-3-amino-4-methyl-2-oxo-5-(tetrahydro-2H-pyran-4-carbonyl)-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbonitrile hydrochloride

Participants

Reaction Steps

A rt solution of tert-butyl(2S,3S)-8-cyano-2-methyl-4-oxo-1-(tetrahydro-2H-pyran-4-carbonyl)-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylcarbamate (289 mg, 674 μmol) in 4 M HCl in dioxane (3.37 ml) was stirred for 1 h. The reaction was diluted with Et20 and the solids were collected by vacuum filtration to provide (3S,4S)-3-amino-4-methyl-2-oxo-5-(tetrahydro-2H-pyran-4-carbonyl)-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepine-7-carbonitrile hydrochloride (218 mg, 89%) as a white solid.

Provenance & Evidence