A 'meta effect'in the fragmentation reactions of ionised alkyl phenols and alkyl anisoles

G Bouchoux, M Sablier, T Miyakoshi…

Index: Bouchoux, Guy; Sablier, Michel; Miyakoshi, Tetsuo; Honda, Takashi Journal of Mass Spectrometry, 2012 , vol. 47, # 4 p. 539 - 546

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Abstract

The competition between benzylic cleavage (simple bond fission [SBF]) and retro-ene rearrangement (RER) from ionised ortho, meta and para RC6H4OH and RC6H4OCH3 (R= n-C3H7, n-C4H9, n-C5H11, n-C7H15, n-C9H19, n-C15H31) is examined. It is observed that the SBF/RER ratio is significantly influenced by the position of the substituent on the aromatic ring. As a rule, phenols and anisoles substituted by an alkyl group in meta ...