Electron impact mass spectrometry of 2-hydroxymethyl-3,4,5,6,7,8-hexahydro-2H-1-benzopyran-5-ones. The unusual presence of [MH3O]+ species in the fragmentation pattern of 4-phenyl derivatives
AbstractThe mass spectrometric behaviour of some 2‐hydroxymethyl‐3,4,5,6,7,8‐hexahydro‐2H‐1‐benzopyran‐5‐ones is described and discussed with the aid of exact mass measurements, linked scans, labelling experiments and low electron energy measurements. The unusual presence of abundant [MH3O]+ species in the mass spectra of 4‐phenyl substituted compounds is discussed in detail and a mechanism is proposed.
Greenhill,J.V.; Mohamed,M.I., Journal of the Chemical Society. Perkin transactions I, 1979, p. 1411 - 1414
作者:Greenhill,J.V.、Mohamed,M.I.
DOI:——
日期:——
Robinson-Mannich Annelation of Cyclohexane-1,3-dione