Phenylfluorophosphoranes: axial-equatorial fluorine exchange in RC6H4PF3H and intermolecular exchange in the PhPF2 (H) OMe-MeOH-base system

LJ Kruczynski, AE Lemire, K Marat…

Index: Kruczynski, Leonard J.; Lemire, Alberta E.; Marat, Kirk; Janzen, Alexander F. Canadian Journal of Chemistry, 1990 , vol. 68, # 3 p. 488 - 491

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Citation Number: 3

Abstract

Activation parameters for axial-equatorial fluorine exchange in arylfluorophosphoranes RC6H4PF3H, where R= o-CF3, m-CF3, p-CF3, m-CH3, were studied by the dynamic nmr technique: varied between 53 and 56 kJ mol-1. The synthesis of difluoromethoxyphenylphosphorane, PhPF2 (H) OMe, from PhPF2 and MeOH is catalyzed by small amounts of Et3N, pyridine, PhPF3H, or HF. Rapid intermolecular ligand ...