Preferred Label : de Mayo reaction; 
IUPAC definition : Photochemical process leading to the formation of cyclobutanols by cycloaddition of
               an alkene to a 1,3-dicarbonyl-enol. The enol originates in most cases from the tautomerization
               of a 1,3-dicarbonyl compound. The products of the de Mayo reaction are susceptible
               to undergo a retro-aldol ring opening resulting in the formation of 1,5-dicarbonyl
               compounds.; 
         
         
            Origin ID : DT07354; 
 See also See also
 
         
         
         Photochemical process leading to the formation of cyclobutanols by cycloaddition of
            an alkene to a 1,3-dicarbonyl-enol. The enol originates in most cases from the tautomerization
            of a 1,3-dicarbonyl compound. The products of the de Mayo reaction are susceptible
            to undergo a retro-aldol ring opening resulting in the formation of 1,5-dicarbonyl
            compounds.