http://yfrog.com/64l3h2j
goto the above link the alcohols gets dehydrated with H+ or acid catalysed dehydration
http://yfrog.com/64l3h2j
goto the above link the alcohols gets dehydrated with H+ or acid catalysed dehydration
A is 1-2 di ol ie., a Pinacol, then its Pinacol-Pinacolone rearrangement.
A quick search would yield your query. See any chemistry book. I like Organic Chemistry by Clayden,warren (Oxford)