Journal of Organic Chemistry p. 3769 - 3775 (1991)
Update date:2022-07-29
Topics: Yield Catalyst Chromatography PHOTOCHEMICAL REACTION Substrate Quantum Yield Methodology Reproducibility Experimental conditions Photocyclization
Liu, Longbin
Yang, Bingwei
Katz, Thomas J.
Poindexter, Michael K.
To photocyclize stilbenes, a stoichiometric amount of iodine plus propylene oxide in the absence of air is superior to a catalytic amount of iodine in the air.The propylene oxide prevents HI from photoreducing double bonds.The absence of air prevents photooxidative side reactions, shown in one case to be caused by a photogenerated oxidant, possibly hydrogen peroxide.
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