Preferred Label : di-π-methane rearrangement; 
IUPAC definition : photochemical reaction of a molecular entity comprising two π-systems, separated by
               a saturated carbon atom (a 1,4-diene or an allyl-substituted aromatic analogue), to
               form an ene- (or aryl-) substituted cyclopropane.; 
Scope note : the rearrangement formally amounts to a 1,2 shift of one ene group (in the diene)
               or the aryl group (in the allyl-aromatic analogue) and bond formation between the
               lateral carbons of the non-migrating moiety.; 
         
         
            Origin ID : D01745; 
 See also See also
 
         
         
         photochemical reaction of a molecular entity comprising two π-systems, separated by
            a saturated carbon atom (a 1,4-diene or an allyl-substituted aromatic analogue), to
            form an ene- (or aryl-) substituted cyclopropane.