Examples of 'hydrazides' in a sentence
Meaning of "hydrazides"
Hydrazides (noun): Chemical compounds containing a divalent organic radical derived from hydrazine, used in various industries
Show more definitions
- plural of hydrazide
How to use "hydrazides" in a sentence
Basic
Advanced
hydrazides
Hydrazides are used today in different chemical industries.
These compounds are amides or hydrazides rather than carboxylic acids.
Hydrazides and their salts.
Exemplary compounds are hydrazides such as luminol and oxalate esters.
Illustrative examples of suitable nucleophiles include hydrazides and thiols.
Hydrazides and hydrazide derivatives are used commercially for stabilizing polyolefins.
This material was used as is for the formation of acid hydrazides.
The hydrazides were dissolved into dimethylformamide and added to the aqueous solution of MoAb.
Sulfur and nitrogen analogs of these hydrazides are also suitable.
The present invention also concerns conjugate comprising polyacrylamide hydrazides.
This reference disclosed hydrazides and does not suggest alkyl or aryl substituted amides.
None of these prior art compounds are hydrazides of amic acids.
Useful carboxylic acid hydrazides include adipic acid dihydrazide and oxalic acid dihydrazide.
The present disclosure also concerns conjugate comprising polyacrylamide hydrazides.
The reactions with either amines or hydrazides are relatively fast under the appropriate conditions.
See also
The hydrolyzed polysaccharide chains are quite reactive towards amines and hydrazides.
Hydrazides react in a similar manner with anhydrides to form an acyl hydrazide and a carboxylic acid.
Examples of other isolable activated derivatives include hydrazides and active esters.
Hydrazides react with aldehydes as in the case of PAG.
Most preferred chain extenders are polyfunctional amines and carboxylic acid hydrazides.
The prior art HALS hydrazides can not be incorporated into the backbone of the polymers.
Molecular conjugates comprising polymeric carriers other than polyacrylamide hydrazides also are described.
The requisite hydrazides are prepared by contacting an acylhydrazone 14b with an alkylisocyanate.
A TNBS assay indicated the presence of hydrazides.
Hydrazides can also be acylated by active esters or carbodiimide-activated carboxyl groups.
Only the solution containing hydrazides was TNBS positive.
Scheme 4 shows an other way for the synthesis of hydrazides.
Other sulfonyl hydrazides such as p-toluene sulfonyl hydrazide can be used, if desired.
They can be cross-linked with hydrazides and amines.
Preferred chain terminators are monofunctional alcohols, amines, or carboxylic acid hydrazides.
Together, the above results show the a-substituted hydrazides described above are neuroprotective.
Preferred chain extenders are polyfunctional alcohols, amines, or carboxylic acid hydrazides.
For example, singlet oxygen can convert hydrazides directly into fluorescent photoactive indicators.
The hydrazides 3 can be either purchased or prepared from the corresponding methyl esters 6 and hydrazine.
Besides the amines mentioned above, hydrazines and hydrazides can also be employed.
Active hydrogen-containing chain extending compounds with a hydrazine ( or hydrazone ) functionality include diamino hydrazides.
The hydrazides of Formula 14 can be prepared by procedures known in the literature M.
For example, the oxidised product may undergo reaction with substituted acyl hydrazides to give oxadiazoles.
Reaction of the acylisothioureas 4 with hydrazides using a modified procedure affords compounds of Formula I.
Furthermore, the polysaccharides in this Example, once activated, were functionalized with either amines or hydrazides.
Summary of the Invention This invention provides novel N-heterocyclyl hydrazides having surprising neurotrophic activity.
The Zincke reaction can also be performed with hydrazines, hydroxyl amines and carboxylic acid hydrazides.
In the same manner, the following hydrazides are prepared,.
Suitable second functional groups include N-hydroxy succinimide esters and their sulfosuccimide analogues and hydrazides.
Hydrazides of formula ( 3 ) can be prepared using methodologies analogous to those known in the art.
Alkylation with methyl iodide gives the isothiourea LXXI, and reaction with hydrazides produces I-Y.
The reaction with hydrazides is faster than with amines, making this useful for site-specific cross-linking.
Field of the Invention This invention relates to certain novel N-heterocyclyl hydrazides having neurotrophic activity.
Hydrazides and their salts e.g. Isoniazid INN.
Sulphonyl halides, sulphonyl cyanides, sulphonyl hydrazides.
