Abstract
The retro-Diels-Alder fragmentation of the adducts (I) of p-benzoquinone with bi-1-cyclohexen-1-yl and with related dienes under electron impact is accompanied by double hydrogen migration. Examination of the mass spectra of deuterium-labeled adducts revealed that the two migrating atoms are attached at positions 8 and 9. A possible mechanism is suggested.
Original language | English |
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Pages (from-to) | 4809-4813 |
Number of pages | 5 |
Journal | Journal of the American Chemical Society |
Volume | 91 |
Issue number | 17 |
DOIs | |
State | Published - Aug 1969 |
Externally published | Yes |