Unimolecular Dissociations of the +. Metastable Ion

Article abstract of DOI:10.1002/oms.1210220712

The metastable molecular ion of 2-hexanone loses a methyl radical mainly (ca. 80percent) from positions C(4) and C(6), in equal proportions, as indicated by 13C labelling.The necessary skeletal rearrangement of the butyl chain is interpreted in terms of a 1,2-^+. shift .The results and the mechanisms concerning the minor eliminations of C2H4, C2H5^., C3H5^. and C3H6 neutrals are also discussed.