Pyridine → HCID 14294179, compound

Participants

Reaction Steps

A solution of 65.5 g of hydrazinecarboxylic acid, methyl ester, 150 ml of dry pyridine and 500 ml of dry dichloromethane was stirred at 0° C. and 100 g of distilled t-butylacetyl chloride was added dropwise. After 2 hours at 0°-5° C. the solvent was removed in vacuo. The residue was taken up in 1.2 liters of ethyl acetate, washed with saturated sodium chloride and filtered through a bed of hydrous magnesium silicate with additional ethyl acetate. The filtrate was concentrated and the solid recrystallized from diisopropyl ether, giving 130 g of 2-(3,3-dimethyl-l-oxobutyl)hydrazinecarboxylic acid, methyl ester as white platelets, mp 83°-84.5° C.

Provenance & Evidence