State Markownikoff's rule. Explain the rule in terms of carbocation stability .

State anti Markownikoff 's rule.

Define Markownikoffs rule.

Define Markownikoffs rule.

Markownikoff rule is best applicable to

State anti Merkovnikoff's rule and explain with an example.

Acid catalysed hydration of alkene gives alcohol. In this reaction addition of water takes place according to Markownikoff's rule. Since intermediate carbocation is formed in this reaction, rearrangement of carbocation takes place. In oxymercuration-demercuration reaction hydration of alkene takes place according to Markownikoff's rule. Oxymercuration demercuration is a better process than the catalytic hydration of alkene because in oxymercuration-demercuration, no rearrangement is possible. In hydroboration oxidation, hydration of alkene takes place as if it is according to anti-Markownikoff's addition. In hydroboration oxidation reaction rearrangement is not possible. Both in oxymercuration-demercuration and hydroboration oxidation intermediate carbocation are not formed. The product formed in the following reaction is

The Markownikoff's rule is best applicable to the reaction between