Conclusions
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1.
Fragmentation of the [M+H]+ and [M+C2H5]+ ions of the alkyl-substituted phenols is largely determined by the size of the substituent and its position in the benzene ring.
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2.
The [M+H]+ ions of the spatially hindered phenols can eliminate a H2O molecule, even without participation of the gas-reagent proton in the cleavage process.
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3.
The presence of the functional substituents can affect the fragmentation of the compounds in question here, at least under chemical ionization in methane.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2532–2538, November, 1978.
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Kadentsev, V.I., Krokhin, A.V., Chizhov, O.S. et al. Behavior of the spatially hindered phenols under chemical ionization in methane. Russ Chem Bull 27, 2260–2266 (1978). https://doi.org/10.1007/BF00946672
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DOI: https://doi.org/10.1007/BF00946672