CXIV.—A new series of hydrazines

Abstract

SINCE the discovery of the primary and secondary hydrazines, they have become of such importance as synthetic agents, and the results to which their employment has led have been of such magnitude that other substituted derivatives of bydrazine have been but little studied. Theoretically, hydrazine can yield five series of substituted derivatives, the primary, secondary, symnietrical and unsymmetrical, tertiary, and the quaternarp.

The Chemistry of Hydrazyl free Radicals. II. Synthesis and Dissociation of Tetra(4-Fluorophenyl)Hydrazine

“…After filtration to remove the lead salts, the filtrate was evaporated to dryness below 30°under reduced pressure. The dark green residue was dissolved in the minimum volume of chloroform and five times this quantity of hot ethanol was added to precipitate the hydrazine (VI) (12). The precipitated material -was carefully washed on a filter plate -with a small volume of ice-cold chloroform.…”