Examples of 'regioisomer' in a sentence
Meaning of "regioisomer"
Regioisomer is a term used in organic chemistry to describe isomers that differ in the position of atoms within a molecule
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- structural isomer
How to use "regioisomer" in a sentence
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regioisomer
The required regioisomer can be obtained by recrystallization.
Said triazine group may be any regioisomer.
The desired regioisomer can further be isolated by crystallisation.
The reaction is enhanced in aqueous conditions and generates a single regioisomer.
This was mainly the regioisomer indicated in the title.
The mother liquors when evaporated yielded mainly the other regioisomer.
The other regioisomer was also observed but was separated by chromatography.
The fractions containing each pure regioisomer were concentrated in vacuo.
The other regioisomer was not isolated from the chromatographic separation.
Hydroxylation can be effected by treating the regioisomer with mineral acids in an aqueous solution.
The filtrate showed the presence of desired product and the ortho substituted regioisomer.
The required regioisomer has to be taken for the next step.
The desired compound was obtained after CC as single regioisomer.
Converting the regioisomer to the piperidine derivative compound with a piperidine compound.
Isolating the substantially pure regioisomer salt ; and.
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The regioisomer is then converted to the piperidine derivative having a keto group with a piperidine compound.
Reduction with LAH of either regioisomer produces the desired products.
One regioisomer is available by applying the chemistry developed by Louie et al.
The other, unstable regioisomer was not isolated.
The crude product is contaminated with at least 1 regioisomer.
Correct regioisomer is confirmed by NOESY.
The invention further relates to a regioisomer having the formula,.
Only a single regioisomer of 2-norbornane carbonitrile was observed by this analysis.
Or the mixture may be purified to yield a particular stereo - or regioisomer.
A sample of the purified regioisomer had the following characteristics,.
Fractions containing product and a closely ( second ) eluting regioisomer were collected.
Decyclizing the regioisomer to produce an oxobutyl derivative having the formula, and then.
Scheme 3 above depicts a selective synthesis of specific regioisomer by combinatorial method.
Pyrimidine regioisomer ( CVI ) is available by modification of the methods presented above.
A process for preparing a substantially pure regioisomer of the formula, wherein.
The mother liquor from these crystallizations were enriched in the late-eluting regioisomer.
The correct regioisomer was determined to be the only product by H-NMR analysis.
For each compound comprising a chelating group, the major regioisomer was as shown.
A small amount of the N-sulfonylated regioisomer was formed in the reaction, but not isolated.
Regioselective - a process which favors the production of a particular regioisomer over all others.
The desired regioisomer was then partitioned between DCM and sat . aqueous sodium bicarbonate.
With a compound of the formula, under conditions effective to produce the substantially pure regioisomer.
GC-MS indicated the presence of a single aldehyde regioisomer along with benzene and methanol.
A compound according to Claim 1, wherein the compound is a substantially pure regioisomer.
Diels-Alder cycloaddition with tosyl acetylene is expected to give regioisomer 28 based on simple electronic considerations.
The regioisomer obtained in Step 3 of Preparation 1 corresponds to the expected product.
The present invention is also directed to processes for preparing a regioisomer having the formula,.
Preferably, very little regioisomer is detected in the crude amide mixture by 1H NMR.
An alternate procedure which should produce only one isoxazole regioisomer is described in Scheme 8.
A yield of 34 % of a regioisomer in the form of a white solid was obtained.
The product is obtained as a 2:1 ratio in favour of desired regioisomer.
The regioisomer 4 is also isolated.
By this method a single triazole regioisomer H3 is produced.
Isolation through recrystallization gives the compound of formula ( 39 ) and its nitro regioisomer.
A process of preparing a regioisomer of the formula, said process comprising,.
