Hammett Analysis of Photodecarbonylation in Crystalline 1,3-Diarylacetones
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The relative quantum yields and chemical efficiencies of crystalline p,p‘-disubstituted 1,3-diphenyl-2-propanones with 4-MeO, 4-Me, 4-F, 4-CF3, and 3,4-diMeO groups were determined by parallel irradiation of polycrystalline samples. Variations in quantum yields that span a factor of 4 are analyzed in terms of the effects of substituents on the stability of the benzylic radical. All solid-state reactions proceeded with 100% chemoselectivity and in >95% chemical yield.
创建时间：
2016-05-06
