The kBr/kCl element effect for nucleophilic vinylic substitution of the highly reactive tricyanovinyl-x system by substituted anilines |
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| Authors: | Zvi Rappoport Chaim Rav-Acha |
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| Institution: | Department of Organic Chemistry, The Hebrew University, Jerusalem 91904, Israel |
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| Abstract: | The element effects for the substitution of tricyanovinyl chloride and bromide by the -position of three dialkylanilines are kBr/kCl=2.37±0.18. An early transition state for the expulsion of the halide ion from the intermediate zwitterion is indicated. |
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