Eine einfache Bildungsweise der secundären symmetrischen Hydrazine

Identification of Aldehydes and Ketones: By Estimation of Hydrazine Nitrogen According to the Jamieson Method

“…Dextrose and lactose phenylosazones were analyzed by the Jamieson method and consistent values were obtained but they were between the values which would be expected if (1) one phenylhydrazine molecule had reacted and (2) two phenylhydrazine molecules had reacted with one molecule of the sugar. These results are not understood.…”

“…Piloty, Fischer, Baeyer, and other workers found that hydrazine, and more especially phenylhydrazine (9), p-bromophenylhydrazine (10), and semicarbazide (2, 8) were of value in preparing derivatives of carbonyl compounds. Curtius and Jay (7, 8) and others (1) similarly investigated the hydrazides and diacyl hydrazines of organic acids.…”

Substituted Phenyltetrazoles. Alkoxynitrophenyl-Tetrazoles and Alkoxyaminophenyltetrazoles

“…The crude product was washed with petroleum ether and recrystallized from 95% ethanol, m.p. 169.5-171° ( 11), yield 68%. Di-isobutyryl hydrazine.…”

“…The diacyl hydrazines used as intermediates in the Dimroth procedure were prepared by interaction of hydrazine in aqueous solution with the anhydrides of the lower fatty acids. The conditions chosen represent substantial modification of the procedures of Stollé (10) and Autenrieth (11). Diisobutyryl hydrazine was prepared in small quantity by the interaction of isobutyryl chloride and hydrazine, but this preparation was not developed since the intermediate became available as a by-product during an investigation of the formation of aminotriazole derivatives (12).…”