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Effects of substituents and generation methods for insertion-addition selectivities of arylcarbene in alcohol-olefin binary mixtures. Intervention of reaction of diazo …

H Tomioka, S Suzuki, Y Izawa

文献索引:Tomioka, Hideo; Suzuki, Shinji; Izawa, Yasuji Journal of the American Chemical Society, 1982 , vol. 104, # 4 p. 1047 - 1050

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被引用次数: 10

摘要

Abstract: A Hammett study of the insertion-addition selectivity (ki/ka) and cyclopropanation stereoselectivity (k,/k,) of'arylcarbene” generated either photolytically or thermally in 2- propanol-ethyl vinyl ether binary mixtures showed that p values are highly sensitive to the generation method. Thus, plots of ki/ka and kJk, vs. u (u') in the photolytic run gave p values of-0.96 (r=-0.96) and-0.15 (r=-0.95), respectively, whereas similar values are+ 1.4 (r= 0.93 ...

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