Trifluoroacetic acid methylene chloride → (3S,7S)-3-amino-1-methyl-7-phenyl-1,3,4,7-tetrahydro-2H-azepin-2-one

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Reaction Steps

To the tert-butyl[(3S,7S)-1-methyl-2-oxo-7-phenyl-2,3,4,7-tetrahydro-1H-azepin-3-yl]carbamate (1d) (200 mg) was added a 1:3 mixture of TFA/DCM (2 ml). The reaction mixture was stirred for 1 h, then diluted with DCM and saturated aq. NaHCO3. The organic layer was isolated and washed with saturated aq. NaHCO3, brine, dried (Na2SO4) and concentrated to yield an oil (128 mg, 93%). MS APCI, m/z=217 (M+1). LC/MS 1.55 min., Method A.

Provenance & Evidence