On the McLafferty and Double Hydrogen Rearrangements in Cycloalkylacetones

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概要

• 論文の詳細を見る

• In the electron impact mass spectra of a series of cycloalkylacetones with ring sizes varying from cyclopropane to cycloheptane, the intensity of the McLafferty rearrangement ion at m/z 58 increases with the larger, less strained rings. The larger ring ketones give surprisingly intense “McLafferty plus one” ions at m/z 59, which is the base peak in the mass spectrum of cyclohexylacetone. This double hydrogen McLafferty rearrangement is favored over the single hydrogen rearrangement at both high (70 eV) and low (14 eV) ionizing voltages. Deuterium labelling confirms the expected considerable hydrogen migration in the cycloalkyl ring, occurring following hydrogen transfer to the carbonyl oxygen and prior to C-C bond cleavage.

• 日本質量分析学会の論文
• 1998-02-01

著者

• Lightner David

  Department Of Chemistry University Of Nevada

• Steinberg Frank

  Department Of Chemistry University Of Nevada

• HUESTIS Laurence

  Department of Chemistry, University of Nevada

• Huestis Laurence

  Department Of Chemistry University Of Nevada

関連論文

• On the McLafferty and Double Hydrogen Rearrangements in Cycloalkylacetones

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