3. STEREOSPECIFIC REACTION
A stereoisomeric reaction in which a particular stereoisomer reacts to give one specific stereoisomeric product.
This property is called stereospecificity.
Thus each individual stereoisomeric substrate under stereospecific synthesis gives a different isomer of the
product.
Example : bromination of alkene , epoxidation of alkene , sn2 reaction ,hydroboration of alkene , hydrogenation
of alkenes etc.
6. STEREOSELECTIVE RECTION
• Stereoselective reactions are those reactions in which one stereoisomer is formed predominantly or
exclusively out of several possible stereoisomers.
• This property is called stereoselectivity.
• In such reactions one stereoisomer is formed more rapidly than other,
• Thus one stereoisomer forms in excess in the resulting mixture of the products.
9. ENANTIOSELECTIVE REACTION
• Enantioselective reactions are defined as the
reactions or processes in which one of the
enantiomer forms predominantly over the other.
• This property is known as enantioselectivity.
• EXAMPLE
10. DIASTEREOSELECTIVE
REACTION
• Diastereoselective reactions are defined as the reactions or processes in which one of the diastereomer
forms predominantly or exclusively over the other.
• This property is known as Diastereoselectivity
• Diastereoselective is usually achieved through in the presence of steric hindrance.