2,2,2-Trichloroethyl chloroformate → HCID 66729312, compound

Participants

Reaction Steps

To a stirring solution of 1-isopropyl-1H-imidazol-4-amine (0.532 g, 4.25 mmol) in EtOAc (70 ml) was added Troc-Cl (0.614 ml, 4.46 mmol) followed by satd. NaHCO3 (17.23 ml 12.75 mmol). The biphasic mixture was stirred briskly at RT. After 6 h, the layers were separated and the aqueous was extracted with EtOAc (1×). The combined organics were washed with satd. NaHCO3 (1×) and brine (1×), dried, evaporated and triturated (EtOAc/hexanes). The solids were collected by filtration, rinsed with hexanes and dried on the filter to afford 2,2,2-trichloroethyl 1-isopropyl-1H-imidazol-4-ylcarbamate (0.392 g, 31% yield) as a pink-orange solid. 1H NMR (400 MHz, DMSO-d6): δ 10.2 (s, 1H), 7.49 (s, 1H), 7.02 (s, 1H), 4.80 (s, 2H), 4.3-4.25 (m, 1H), 1.35 (d, 6H); MS (ESI) m/z: 300.0 (M+H+), 302.0 (M+2+H+).

Provenance & Evidence