Mass spectrometry in structural and stereochemical problems. CXLV. Factors governing the preferential loss of small vs. large radicals in ketones, Schiff bases, and …

WR Carpenter, AM Duffield…

Index: Carpenter,W. et al. Journal of the American Chemical Society, 1967 , vol. 89, p. 6167 - 6170

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Citation Number: 15

Abstract

Abstract: Study of the low-voltage (10 ev) spectra of a series of aliphatic ketones with regard to the a-cleavage process (I-.+ a+ b) reveals that the smallest alkyl radical is preferentially eliminated, contrary to the situation existing at 70 ev. A series of aliphatic Schiff bases at low voltage behave in a similar fashion. Aliphatic ethers lose an alkyl radical by a-cleavage (11- + c) in preference to a methyl radical but when a choice between two alkyl radicals (ethyl ...