HomeStep 4 – The aldol or ketol undergoes spontaneous dehydration to produce the alpha,beta-unsaturated carbonyl compound. Step 4 – The aldol or ketol undergoes spontaneous dehydration to produce the alpha,beta-unsaturated carbonyl compound. Akul Mehta | | June 29, 2011 | Step 4 – The aldol or ketol undergoes spontaneous dehydration to produce the alpha,beta-unsaturated carbonyl compound. About The Author Akul More From This Author Add Comment Cancel reply I accept the Privacy Policy This site uses Akismet to reduce spam. Learn how your comment data is processed.