Methyl Isocyanate → HCID 20441645, compound

Participants

Reaction Steps

Methyl isocyanate (56.5 ml) was added dropwise over 15 minutes, with cooling, to a stirred solution of 5-chloropyrimidin-2-one (25 g) in N,N-dimethylformamide (290 ml) and triethylamine (30.4 ml). The temperature of the reaction mixture was kept at approximately 22° C. The mixture was stirred at room temperature for a further 40 minutes and then cooled in an ice bath. The solid was collected, washed with cold dichloromethane (4×215 ml), briefly air dried and then dried in vacuo at room temperature to give the title compound as white crystals (33.36 g), m.p. 241°-243° C. decomp. U.V. data: λmaxEtOH 230 nm (ε10,370), 322.5 mm (ε1,700).

Provenance & Evidence