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Translational energy release and stereochemistry of steroids 6—Contribution of the 18‐ and 19‐methyl groups to the translational energy release for the angular methyl loss in unsaturated steroids
Author(s) -
Zaretskii Z. V. I.,
Kustanovich Z.,
Kingston E. E.,
Bey J. H.,
Lauber R.,
Schlunegger U. P.,
Djerassi Carl
Publication year - 1985
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210200709
Subject(s) - chemistry , methyl group , translational energy , methyl oleate , allylic rearrangement , medicinal chemistry , stereochemistry , ion , group (periodic table) , organic chemistry , catalysis
Abstract The translational energy, T , released during angular methyl loss from the molecular ions of unsaturated steriod hydrocarbons and alcohols, containing the double bond in the position allylic to either the 19‐CH 3 or 18‐CH 3 group, has been measured. The different contributions of the two angular methyl groups to the overall T value for the [M] + ˙→[MCH 3 ] + reaction are discussed.