Diverse photochemistry of sterically congested. alpha.-arylacetophenones: ground-state conformational control of reactivity

PJ Wagner, T Hasegawa, B Zhou…

文献索引：Wagner, Peter J.; Zhou, Boli; Hasegawa, Tadashi; Ward, Donald L. Journal of the American Chemical Society, 1991 , vol. 113, # 25 p. 9640 - 9654

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被引用次数: 33

摘要

Abstract: The effects of a and ortho substituents on the photoreactivity of various a-(0-tolyl)- and a-mesitylacetophenones have been measured. In general, both types of substitution lower the efficiency of cyclization to 2-indanol derivatives in solution. I, 3-Rearrangement of an a-mesityl group to form enol ethers and a-cleavage to radicals compete to various degrees, in some cases becoming dominant. Quenching studies in solution show that all ...