User talk:125.63.177.55

About the '''migratory aptitude in Pinacol-pinacol rearrangement ''' There had been different views on the migratory aptitudes for different reaction (Baeyer-Villiger Oxidation for example), as suggested by differen researchers during different reaction conditions with different substrates...

About pinacol rearrangement, some text-books on reaction mechanism, like one by Jie Jack Li, 3 Ed., p 464 suggest the order of migratory aptitude to be such that: The most electron-rich alkyl group (more substituted carbon) migrates first.

The general migration order: tertiary alkyl > cyclohexyl > secondary alkyl > benzyl > phenyl > primary alkyl > methyl >> H. For substituted aryls: p-MeO-Ar > p-Me-Ar > p-Cl-Ar > p-Br-Ar > p-MeOAr > p-O2N-Ar

Pinacol_JieJackLi_3Ed

--VimalS.Katiyar 09:17, 10 September 2021 (UTC)