Examples of 'hydrazines' in a sentence
Meaning of "hydrazines"
Hydrazines (noun): Chemical compounds containing nitrogen and hydrogen atoms, often used in the production of pharmaceuticals and pesticides
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- plural of hydrazine
How to use "hydrazines" in a sentence
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hydrazines
Both hydrazines and nitrosoureas are alkylating agents.
Azines characteristically undergo hydrolysis to hydrazines.
Hydrazines and hydroxylamine can be used in place of amines.
The disclosed hydrazines are new compounds.
They can be considered as strained hydrazines.
The related hydrazines do not carry an acyl group.
This invention relates to a process for preparing monoacylated hydrazines.
Other hydrazines can be used.
The use of hydroxylamine sulfate was preferred over the hydrazines.
Some hydrazines were prepared according to general procedure described below.
A representative procedure for synthesis of aminopyrazoles from substituted hydrazines.
These hydrazines are somewhat similar in chemical structure and reactivity.
A related class of compounds called hydrazines do not carry an acyl group.
Hydrazines attached to aryl or heteroaryl ring systems are useful as intermediates herein.
Treatment with various hydrazines affords the pyrazole analogues.
See also
The other is control of the regioselectivity of acylation for monosubstituted hydrazines.
Selectivity a problem when acylating hydrazines since hydrazine is a difunctional molecule.
Exemplary nucleophiles for such derivatization include hydrazines and thiols.
Substituted aromatic hydrazines can be prepared by reducing the corresponding diazonium salts.
Acylamine transfer has primarily been performed using amines and hydrazines as nucleophiles.
This is because your body changes hydrazines into other compounds called metabolites.
Examples of other antineoplastic agents include platinum compounds and methyl hydrazines.
Amino halides may be employed to form hydrazines with the amino group.
During his time in Munich Fischer continued his research on hydrazines.
Compounds of formula XII are reacted with suitable hydrazines to provide compounds of formula XI.
This intermediate can be prepared in a variety of ways from hydrazines I.
Hydrazines I are readily available starting materials.
The invention is also directed to certain of the disclosed hydrazines as new compounds.
Many substituted hydrazines are known, and several occur naturally.
The roles of electronic and solid-state reactivity of the hydrazines were discussed.
However, aryl hydrazines have not been widely available by convenient, scalable chemistry.
Of course, a wide variety of primary or secondary amines or hydrazines could have been used.
The hydrazines employed here include, for example hydrazine, methylhydrazine and phenylhydrazine, preferably hydrazine.
A large variety of substituted aryl hydrazines such as 6 are commercially available.
The synthesis of carbohydrazide analogues of trolox was achieved by reaction with ( substituted ) hydrazines.
In the Einhorn-Brunner reaction hydrazines react with imides to give triazoles.
Hydrazines are corrosive and strong reducing agents, though they constitute weaker bases than ammonia.
Besides the amines mentioned above, hydrazines and hydrazides can also be employed.
The aromatic amines which can be used are triphenyl amines, benzidines, paraphenylene diamines and hydrazines.
A mixture comprising one or more hydrazines having the following structural formula, wherein.
The insecticidal compounds of the invention comprise substituted hydrazines of the formula, wherein.
Propoxylated hydrazines are available commercially under the tradename Qxypruf ™.
Barton 's hydrazone iodination method involves addition of hydrazines to aldehyde or ketone to form hydrazone.
Propoxylated hydrazines are available commercially under the tradename Oxypruf ™.
The present invention provides insecticidal compounds which are substituted hydrazines of the formula, wherein.
The preparation of substituted hydrazines of Formula 3 can be accomplished by literature methods J.
An alternative mechanism involving a Pummerer-like reaction of seleninamides derived from the hydrazines is proposed.
One method of preparing some of the hydrazines useful herein is illustrated in Scheme 8.
Examples of nucleophilic groups include amines, anilines, alcohols, phenols, thiols and hydrazines.
The invention uses a hydrazine because of the reactivity of hydrazines with modification-resistant polynucleotides.
