Ethyl chloroformate → HCID 20326529, compound

Participants

Reaction Steps

A mixture of 1.6 g. of 5-methyl-3-(m-nitrophenyl)-6-(1-methylhydrazino)pyridazine, 1.03 g. of diisopropylethylamine and 40 ml. of dioxane in a 100 ml. round bottom flask is warmed slightly until solution takes place. A 0.75 g. portion of ethyl chloroformate is pipetted into the solution for one hour and then the dioxane is removed on a rotating evaporator. The product is obtained after recrystallization from acetone-petroleum ether, m.p. 142°-144° C.

Provenance & Evidence