Definitions
from The Century Dictionary.
- noun A colorless crystalline mass, C6H5.NH.NH2, which melts at 23° C. and then appears as an oily liquid which readily becomes brown from oxidation. It is extensively utilized as a reagent in the recognition of aldehydes and ketones (and hence of sugars), with which it forms characteristic compounds which in part belong to the hydrazones and in part to the osazones.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry The
phenyl derivative ofhydrazine C6H5-NH-NH2; it is used in thesynthesis ofindoles , and in theanalysis ofsugars etc.
Etymologies
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Examples
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Fischer's early discovery of phenylhydrazine and its influence on his later work have already been mentioned.
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University and here he discovered the first hydrazine base, phenylhydrazine and demonstrated its relationship to hydrazobenzene and to a sulphonic acid described by Strecker and
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The discovery of phenylhydrazine, reputed to have been accidental, was related to much of Fischer's later work.
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Even before 1880 the aldehyde formula of glucose had been indicated, but Fischer established it by a series of transformations such as oxidation into aldonic acid and the action of phenylhydrazine which he had discovered and which made possible the formation of the phenylhydrazones and the osazones.
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The molecular proportion of N in the phenylhydrazine residue combining is fractional, representing 1 atom O, i.e. 1 CO group reacting per 4
Researches on Cellulose 1895-1900 C. F. Cross
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Its compound with phenylhydrazine (_loc.cit. _) gave the following analytical numbers:
Researches on Cellulose 1895-1900 C. F. Cross
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After fermenting away the hexoses, the residue was treated with phenylhydrazine and an osazone separated.
Researches on Cellulose 1895-1900 C. F. Cross
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_ -- Oxycelluloses prepared by various methods are found to fix varying proportions of phenylhydrazine
Researches on Cellulose 1895-1900 C. F. Cross
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The author has also established a relation between the phenylhydrazine fixed and the furfural which the substance yields on boiling with condensing acids.
Researches on Cellulose 1895-1900 C. F. Cross
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Action phenylhydrazine deoxyadenosine Fusarium oxysporum Schl. f. sp. lycopersici (Sacc.)
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