Some examples of pinacol rearrangements

CHAPTER 8 REACTIONS INVOLVING ELECTRON-DEFICIENT INTERMEDIATES 

More recently, it has been found that trimethylsilyl cyanide reacts with ketones to 

Another method for the synthesis of aminomethylcycloalkanols involves reduction of the adducts of nitromethane and cyclic ketones  

SECTION 8.5. SOME SYNTHETICALLY USEFUL CARBONIUM-lON REACTIONS 

Diazotization of aminomethylcycloalkanes can also lead to ring expansion, but the absence of participation by a hydroxyl group in the rearrangement makes this a much less specific reaction. Mixtures of alkenes and alcohols, both rearranged and unrearranged, are usually obtained and the reaction is seldom synthetically attrac- 

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