Synthesis and Photochemical Transformations of a few 3,3-Bis(4-chlorophenyl)-5-aryl-2(3H)-furanones

Vidya Raman, Rakesh Natarajan, Tomson Devassia, Ligi M. Lalu


A few 3,3-bis(4-chlorophenyl)-5-aryl-2(3H)-furanones were synthesized and their photochemical transformations were studied.  On direct irradiation, these aryl substituted 2(3H)-furanones underwent decarbonylation to yield corresponding a,b-unsaturated carbonyl compounds and upon sensitized irradiation, they underwent dimerization arising through a [2+2] cycloaddition reaction.


4,4’-Dichlorobenzil, 2(3H)-furanones, 2(5H)-furanones, [2+2] cycloaddition.

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