反应详情

To a solution of (3S)-3-[[(2S)-2-[N'-(phenyl)thioureido]-3-phenylpropanoyl]amino]-1,3-dihydro-5-phenyl-1-[(1H-tetrazol-5-yl)methyl]-2H-1,4-benzodiazepin-2-one (14.10 g) in tetrahydrofuran (84.6 ml) was added dropwise 4N-hydrogen chloride in ethyl acetate (84.6 ml) below 6° C. After stirring under the-same conditions for 10 hours, the resultant precipitates were collected by filtration, and then the collected precipitate was suspended in chloroform and stirred for 1 hour at room temperature. The objective product was collected by filtration to give (3S)-3-amino-1,3-dihydro-5-phenyl-1-[(1H-tetrazol-5-yl)methyl]-2H-1,4-benzodiazepin-2-one hydrochloride (7.15 g).

1. customthe resultant precipitates
2. filtrationwere collected by filtration
3. stirringstirred for 1 hour at room temperature
4. filtrationThe objective product was collected by filtration