Phosgene → HCID 20406861, compound

Participants

Reaction Steps

Example 1 was repeated but substituting methyl carbazate (50 g, 0.55 mole) for the ethyl carbazate and using phosgene (75 ml, 1.13 mole) in dry ethyl acetate as solvent. Solvent was removed under reduced pressure at a bath temperature <60° C. and the product was re-dissolved in ethyl acetate, filtered to remove insoluble material and recovered by evaporation of the solvent in vacuo, giving 2-methoxycarbonylhydrazinecarbonyl chloride (77 g, 92%) mp 55°-58° C. The ir spectrum was similar to that of 2-ethoxycarbonylhydrazinecarbonyl chloride.

Provenance & Evidence