Unique solvent effect on photochemistry of ortho-alkylphenacyl benzoates

作者：Park Bong Ser^*; Ryu Hyuk Jun

来源：Tetrahedron Letters, 2010, 51(11): 1512-1516.

DOI：10.1016/j.tetlet.2010.01.046

• Photochemistry
• Solvent effect
• Benzocyclobutenol
• Hydrogen abstraction

Photolysis of 2,4,6-trialkylphenacyl benzoates gives not only the corresponding indanones and benzoic acid, but also the corresponding benzocyclobutenols (CBs), which are also detected in the photolysis of mono-alkylphenacyl benzoates for the first time. The product selectivity was heavily dependent upon solvents and o-alkyl group. H-bonding acceptor solvents strongly favor the formation of the CB. As the size of the o-alkyl group increases, the relative amount of the CB increases.

• 出版日期2010-3-17