Absolute Rate Constants for Radical Additions to Alkenes in Solution. The Synergistic Effect of Perfluorination on the Reactivities of n-Alkyl Radicals1

…, KU Ingold, J Lusztyk, WR Dolbier…

Index: Avila, David V.; Ingold; Lusztyk; Dolbier Jr.; Pan Journal of Organic Chemistry, 1996 , vol. 61, # 6 p. 2027 - 2030

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Citation Number: 35

Abstract

Laser flash photolysis has been used to determine the absolute rate constants for addition of several partially fluorinated n-alkyl radicals to three styrenes at 25° C in Freon 113. Fluorination at the γ-position (RCF2CH2CH2) gives radicals with essentially the same reactivity as non-fluorinated n-alkyls. The RCH2CF2CH2 and RCH2CH2CHF radicals are both about three times as reactive as RCF2CH2CH2, but the RCH2CH2CF2 radical is ca. ...