Water → tert-butyl N-((1S)-1-cyanoethyl)carbamate

Participants

Reaction Steps

To a stirred solution of tert-butyl [(1S)-2-amino-1-methyl-2-oxoethyl]carbamate (Step 1, 0.7 g, 0.004 mol) in N,N-dimethylformamide (5 mL) was added 343 mg of cyanuric chloride (0.00186 mol) at once. The reaction mixture was stirred for 4 h. Water was added and the mixture was extracted with ethyl acetate. The combined organic layers were washed with brine, dried over MgSO4, filtered, and concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column with EtOAc in hexane (30-50%) to yield the desired product (400 mg, 63%). 1H-NMR (300 MHz, DMSO-d6): 7.74 (d, J=7.0 Hz, 1H), 4.48 (m, 1H), 1.40 (s, 9H), 1.35 (d, J=7.0 Hz, 3H).

Provenance & Evidence