Carbonate Ion → tert-butyl(3S,4S)-7-cyano-4-methyl-1-((2-methylnaphthalen-1-yl)methyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylcarbamate

Participants

Reaction Steps

To a rt solution of tert-butyl(3S,4S)-7-cyano-4-methyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylcarbamate (308 mg, 974 μmol) in DMF (2.43 ml) was added 1-(chloromethyl)-2-methylnaphthalene (223 mg, 1.17 mmol) and cesiuim carbonate (952 mg, 2.92 mmol). The reaction was stirred at rt for 2 h, then diluted with EtOAc, washed with H2O and sat. aq. NaCl, dried over Na2SO4, filtered, and concentrated. The crude material was purified by flash chromatography to provide tert-butyl(3S,4S)-7-cyano-4-methyl-1-((2-methylnaphthalen-1-yl)methyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylcarbamate (364 mg, 80% yield) as an off-white oil. MS m/z 493 (MNa)+.

Provenance & Evidence