Methanamine, N-methoxy-, hydrochloride (1:1) → HCID 87442638, compound

Participants

Reaction Steps

To a solution of 6.00 g (19.76 mmol) rac-tert-butoxycarbonylamino-(4-chloro-3-fluoro-phenyl)-acetic acid in 146 ml dimethylformamide were added 20.71 ml (118.6 mmol) N-ethyl-diisopropylamine, 2.07 g (20.75 mmol) N,O-dimethylhydroxylamine hydrochloride and 8.26 g (24.70 mmol) 0-(1H-benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (TBTU) and the solution stirred at ambient temperature for 30 min. The reaction mixture was diluted with water and the resulting suspension stirred for 15 min. The precipitate was filtered and washed with water and dried: 5.18 g rac-[(4-chloro-3-fluoro-phenyl)-(methoxy-methyl-carbamoyl)-methyl]-carbamic acid tert-butyl ester as colorless solid: MS (ISP): 347.2 (M+H)+ and 247.1 ((M-Boc)+H)+ (100%).

Provenance & Evidence