Table of Contents
Are stereospecific reactions stereoselective?
A stereospecific mechanism specifies the stereochemical outcome of a given reactant, whereas a stereoselective reaction selects products from those made available by the same, non-specific mechanism acting on a given reactant.
Why is the reaction stereoselective how does it differ from stereospecific reactions?
In stereospecific reactions, each stereoisomeric reactant produces a different stereoisomeric product, whereas, in stereoselective reactions, a single reactant can produce two or more different stereoisomeric products. This is the difference between stereospecific and stereoselective reactions.
What makes a reaction stereoselective?
A stereoselective process is one in which one stereoisomer predominates over another when two or more may be formed. If the products are enantiomers, the reaction is enantioselective; if they are diastereoisomers, the reaction is diastereoselective. The product in such a case must also be achiral (or racemic).
Which of the following reactions are both stereospecific?
Option D) E2 reactions are stereospecific reactions as it has anti and syn products.
Why is a reaction not stereoselective?
Those are enantiomers. The first reaction gives no preference to one stereoisomer or the other. So, it’s NOT stereoselective. When the stereochemical relationship between the products is diastereomers, we call such a reaction diastereoselective.
What does not stereoselective mean?
If more than one reaction could occur between a set of reactants under the same conditions giving products that are stereoisomers and if one product forms in greater amounts than the others, the overall reaction is said to be stereoselective. The overall reaction between A and B is not stereoselective.
Which of the following reactions are both stereospecific and stereoselective?
trans-But-2-ene + PhCO3H/H2O→. Hence it is both stereospecfic and regioselective. So the reaction is sterospecific (anti-addition) but non-regioselective since two compounds of (⊕) and (Ө) form are formed in equal amounts. So it is both stereospecific and regioselective.
What is non stereospecific?
A racemic mixture is a mixture that contains equal amounts of both enantiomers of a chiral molecule. In synthesizing enantiomers, if a set of reactants combine to form a racemic mixture, then the reactants are called non-stereoselective or non-stereospecific.