Methyl chloroformate → HCID 11252029, compound

Participants

Reaction Steps

At 0-5° C., 248.4 g (2.628 mol) of methyl chloroformate were added with stirring, over a period of 30 min, to a mixture of 200 g (2.628 mol) of 2-hydrazinoethanol and 266 g (2.628 mol) of triethylamine in 1600 ml of methylene chloride. After 3 h of stirring at from 3 to 22 C, the resulting hydrochloride was removed by filtration and washed with THF. The filtrates were combined. The filter cake was suspended in 800 ml of THF and filtered again. This filtrate, too, was combined with the previous filtrate. The combined filtrates were concentrated under reduced pressure. This gave 366 g of the title compound as colorless oil having an HPLC purity of 95.3%, corresponding to a yield of 98.9% of theory. According to GC, the purity was 85.2%.

Provenance & Evidence