Intramolecular Geminal and Vicinal Element Effects in Substitution of Simple Bromo(chloro)alkenes by Methoxide and Thiolate Ions. An Example of a Single Step Substitution?
作者:Michal Beit-Yannai、Zvi Rappoport、Bagrat A. Shainyan、Yuri S. Danilevich
DOI:10.1021/jo9709357
日期:1997.11.1
Intramolecular element effects k(Br)/k(Cl) for substitution of geminal bromochloroalkenes BrC(Cl)=C(Br)Cl (1), BrC(Cl)=CCl(2) (2), Me(2)C=C(Br)Cl (3), and XCH=C(Br)Cl (X = Cl, 4; X = Br, 5), with MeO(-) and RS(-) nucleophiles were investigated. 3 did not give substitution, and 4 and 5 gave substitution with MeO(-) via an initial elimination (to acetylene)-addition route, followed by further reactions