A 1,2-alkyl shift is a carbocation rearrangement in which an alkyl group in a carbocation migrates to the carbon atom bearing the formal charge of +1 (carbon 2) from an adjacent carbon atom (carbon 1).
OCHEMPAL IS NOW IN THE FORM OF A BOOK
Title: The Elements of Organic Chemistry; Subtitle: A Compendium of Terminology, Definitions, and Concepts for the Beginner.
Available at Amazon or the publisher’s website: http://linusbooks.com/?wpsc-product=the-elements-of-organic-chemistry
The book contains everything on OChemPal except some recent additions, a few biochemical terms, and the Mastery Check feature. So, if you prefer reading a book to reading a screen, the book is for you.