The mass spectra of [2H1]phenylacetylene shows 100% H/D randomisation in the molecular ion prior to expulsion of an acetylene fragment. In analogous benzene-substituted phenylacetylenes 70-100% H/D randomisation occurs in the molecular ion or some subsequent fragment. Symmetrical intermediates are proposed to account for the scrambling and it seems likely that carbon-carbon bond fission takes place prior to formation of these intermediates.
|Original language||English (US)|
|Number of pages||4|
|Journal||Journal of the Chemical Society B: Physical Organic|
|State||Published - 1971|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry