FTP identify this rule named for a Russian organic chemist.
Since hyperconjugation prefers secondary and tertiary carbocations to primary ones, protonation should occur on the less substituted carbon, making the more substituted carbon the carbocation. Observed when the halogen attaches to the internal carbon of propene during hydrohalogenation, it explains regioselectivity of electrophilic addition to unsymmetric alkenes. Essentially the reverse of Saytzev rule, it states that a proton will attach to the carbon in a double bond with the most hydrogen substituents. FTP identify this rule named for a Russian organic chemist.
Since hyperconjugation prefers secondary and tertiary carbocations to primary ones, protonation should occur on the less substituted carbon, making the more substituted carbon the carbocation.
{Markovnikov} rule