Ipso substitution of triarylvinyl cations by alkoxide anions

T Kitamura, T Kabashima, I Nakamura…

Index: Kitamura, Tsugio; Kabashima, Takashi; Nakamura, Ichizo; Fukuda, Tetsuro; Taniguchi, Hiroshi Journal of the American Chemical Society, 1991 , vol. 113, # 19 p. 7255 - 7261

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Citation Number: 5

Abstract

Abstract: Photolysis and solvolysis of triarylbromoethanes 1 in the presence of alkoxide anions in alcohols resulted in significant formation of products derived from ipso substitution by alkoxide anions. Photolysis of 1-aryl-I-bromo-2, 2-diphenylethenes 1Aa and 1Ab with IO mol equiv of alkoxide anions gave I-alkoxy-l-aryl-2, 2-diphenylethenes 2A and 3, 3-dialkoxy- 6-(2, 2-diphenylvinylidene)-1, 4-cyclohexadienes 3A (ipso adducts). However, the ...