hydrazones

(_Ber. _, 1898, 31, p. 455) has shown that the nitro-alkyl derivatives behave as though they possess the constitution of hydrazones, for on heating with dilute alkalies they split more or less readily into an alkaline nitrite and an acid hydrazide:

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various

The constitution of the oxyazo compounds has attracted much attention, some chemists holding that they are true azophenols of the type R·N_2·R_1·OH, while others look upon them as having a quinonoid structure, _i. e._ as being quinone hydrazones, type R·NH·N: R_1: O.

Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" Various

Treated with caustic soda solution the hydrazones were dissolved in part: on reprecipitation a hydrazone of unaltered composition was obtained.

Researches on Cellulose 1895-1900 C. F. Cross

N-heterocyclic carbene/Lewis acid catalytic system promotes the addition of homoenolate equivalents to hydrazones, generating highly substituted γ-lactams in moderate to good yields and with high levels of diastereo - and enantioselectivity.

Naturejobs - All Jobs Dustin E. A. Raup 2010

Phenol Mannich compounds and phenolic hydrazones are poor bets.

In the Pipeline 2010

Phenol Mannich compounds and phenolic hydrazones are poor bets.

In the Pipeline 2010