Examples of 'regioselectivity' in a sentence
Meaning of "regioselectivity"
Regioselectivity is a term used in chemistry to describe the preference of a reagent for one direction of chemical bond formation over all other possible directions in a molecule. This concept is important in organic synthesis to understand and control the outcome of reactions
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- The condition of being regioselective.
- The degree to which a reaction is regioselective.
How to use "regioselectivity" in a sentence
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regioselectivity
The regioselectivity of epoxide opening is highly selective.
Substituents at the meta position influence regioselectivity.
This regioselectivity mainly depends on the metal used.
The reaction exhibited a high degree of regioselectivity.
The regioselectivity can also be effected by steric hindrance.
These salts were used for studies of regioselectivity in nucleophilic addition reactions.
This regioselectivity does not appear to depend on conjugation or the degree of substitution.
Good catalytic activity was observed despite moderate regioselectivity and enantioselectivity.
It gives a higher regioselectivity but requires activated substrates.
The reaction offers good functional group tolerance and excellent regioselectivity.
The regioselectivity is dependent on the nature of the chiral amine catalyst.
Factors assumed to be responsible for a pronounced regioselectivity in some of the reactions are discussed.
This regioselectivity may often be explained vÃa theoretical and or calculational considerations.
The reaction is carried out at lower temperatures and leads to a higher regioselectivity.
The other is control of the regioselectivity of acylation for monosubstituted hydrazines.
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The hydrogenation step takes place with quantitative yield and complete regioselectivity.
The regioselectivity of the alcohol addition reaction depends on the type of substituents.
The reaction mechanisms accounting for this regioselectivity are a topic of great scientific interest.
Trials of regioselectivity control were made by using groups with enhanced steric hindrance.
This confirmed that activation by dibutyltin oxide was necessary for the observed regioselectivity of sulfation.
The regioselectivity of the compounds obtained was controlled by using ditosylates of differing sizes.
The trimethylsilyl group exerts a strong activating and directing influence on the regioselectivity of this cyclization.
The reaction shows high regioselectivity and proceeds with minimal byproduct formation.
It has been shown that the Demjanov reaction is susceptible to regioselectivity.
The regioselectivity of this reaction was studied by coupling a single aryl group per dibrominated derivative.
Figure 6 illustrates the regioselectivity of the CSAIDs.
Regioselectivity and stereoselectivity of the Dies Alder reactions.
This methodology has shown high regioselectivity and the products were obtained with excellent yields.
Regioselectivity and Stereoselectivity.
Zaitsev 's rule helps to predict regioselectivity for this reaction type.
Nevertheless, these reactions suffer from a lack of specificity and regioselectivity.
Yield and regioselectivity were determined by means of GC.
Enzyme-based syntheses have the advantages of regioselectivity and stereoselectivity.
Moreover, the regioselectivity is low, giving an additional possibility of product.
Moreover, where appropriate, a surprising high regioselectivity to desired isomers was observed.
Thus, the regioselectivity depends on the stereochemistry of the diene oxide double bond.
A co-catalyst may also improve the stereoselectivity or regioselectivity of a polymerization reaction.
Thus, the lower regioselectivity appears to be due to the high temperature.
Thus, the subsequent cyclization proceeds in high regioselectivity and stereselectivity.
At the same time, the regioselectivity of the reaction is not adversely affected.
These enzyme-based conjugations have the advantages of regioselectivity and stereoselectivity.
Regioselectivity and performance of these enzyme 's catalytic reactions were compared to those of CALB.
Furthermore, in some cases the regioselectivity can be controlled with solvents.
Interestingly, these alkenes were obtained with a high control of the stereo - and regioselectivity.
The regioselectivity of the protections was determined using NMR analyses ( HMBC and HSQC ).
It allows this preparation under good economic conditions and, moreover, with an excellent regioselectivity.
High regioselectivity was expected in the pyrazole formation of diketone 26.
By choosing an appropriate combination of primary catalyst and activator / modifier high regioselectivity can be achieved.
Regioselectivity in ring-closure reactions is subject to Baldwin's rules.
The results obtained shown very good catalytic activity, excellent regioselectivity with moderate enantioselectivity.
