Examples of 'pyridine hydrochloride' in a sentence
Meaning of "pyridine hydrochloride"
pyridine hydrochloride - It is a chemical compound consisting of pyridine and hydrochloric acid, often used in pharmaceuticals or organic synthesis.
How to use "pyridine hydrochloride" in a sentence
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pyridine hydrochloride
Optionally a catalyst such as pyridine hydrochloride can be included.
The pyridine hydrochloride thus precipitated was filtered away and the tetrahydrofuran was distilled off.
Optionally a catalytic amount of pyridine hydrochloride can be included.
The precipitated pyridine hydrochloride is filtered off and the filtrate is concentrated under reduced pressure.
The byproduct in the above reaction is pyridine hydrochloride.
Further, pyridine salts such as pyridine hydrochloride and pyridine paratoluenesulfonate may be mentioned.
A preferred dealkylating agent is pyridine hydrochloride.
The aqueous phase containing pyridine hydrochloride was decanted and again extracted with 3 l of benzene.
And said acid salt of pyridine is a pyridine hydrochloride.
Pyridine hydrochloride ( 0.1 g ) was then added, and the reaction was heated at reflux for one hour.
The distillation bottoms are again free of pyridine hydrochloride.
Other alternative reagents include pyridine hydrochloride or boron trichloride.
A preferred cleavage reaction is the treatment of a quinazoline derivative of the formula I with pyridine hydrochloride.
Optionally, catalytic pyridine hydrochloride can be added.
Then the membrane was washed with water to remove pyridine hydrochloride.
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A mixture of Compound 4B and pyridine hydrochloride is heated under nitrogen.
The resultant precipitates were washed with water to remove pyridine hydrochloride.
The protected product from above is demethylated with pyridine hydrochloride neat at 200 degrees for 3 hours.
Surprisingly, this provided insoluble product diester and solubilized the unreacted HQ and the pyridine hydrochloride.
Experimental examples are described employing p-dimethylamine tosylate and pyridine hydrochloride as amine acid complexes.
A preparation of claim 2, wherein the preparation is substantially free of pyridine hydrochloride.
The residue was washed with THF several times to remove pyridine hydrochloride.
In a particularly preferred embodiment, the catalyst is pyridine hydrochloride.
The distillation bottoms, on the other hand, are free of pyridine hydrochloride.
This displays a minimum azeotrope at a proportion by mass of 85 % by weight of pyridine hydrochloride.
A compound of embodiment 8, wherein there is less than 5 % by weight pyridine hydrochloride.
A preparation of claim 1, wherein the preparation comprises less than 5 % by weight pyridine hydrochloride.
The method of claim 1, wherein the preparation comprises less than 5 % by weight pyridine hydrochloride.
Salts used in this reaction include, for example, sodium cyanide, lithium iodide and pyridine hydrochloride.
A small aliquot of this solution When cooled to ~ 5°C exhibited crystallization of water soluble pyridine hydrochloride.
The resulting methyl ether intermediate ( III ) is cleaved to the corresponding phenol ( I ) with pyridine hydrochloride.
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Examples of using Pyridine
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Typical bases include pyridine and triethylamine
Pyridine is also used as a base in condensation reactions
Related to these are pyridine and its derivatives
Examples of using Hydrochloride
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Metformin hydrochloride is excreted unchanged in the urine
Precipitation of the imidazole hydrochloride started immediately
Ambroxol hydrochloride is secreted into breast milk
