… Isotope Effects and Rates for the Methanolic Sodium Methoxide Reactions of 9-R-Fluorene to Those for p-CF 3 C 6 H 4 CHClR (R= CH 2 Cl, CH 2 F and CF 3)

…, EL Ruggles, M van Laren, AM van Roon

Index: Koch, Heinz F.; Pomerantz, William C.; Ruggles, Erik L.; Van Laren, Martijn; Van Roon, Anne-Marie Collection of Czechoslovak Chemical Communications, 2002 , vol. 67, # 10 p. 1505 - 1516

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Abstract

Abstract Kinetic primary isotope effects and activation parameters associated with the methanolic sodium methoxide-promoted dehydrohalogenation reactions of 9-(chloromethyl) fluorene and 9-(fluoromethyl) fluorene are reported and compared to for p-CF 3 C 6 H 4 CHClCH 2 Cl and p-CF 3 C 6 H 4 CHClCH 2 F. The element effect, k HCl/k HF= 4 at 25 C, for the fluorenyl compounds is only a tenth of the value, k HCl/k HF= 54, obtained for the ...