oxa-di-π-methane rearrangement

https://doi.org/10.1351/goldbook.O04359
A @[email protected] of a β,γ-unsaturated ketone to form a saturated α-cyclopropyl ketone. The @[email protected] formally amounts to a 1,2-acyl shift and 'bond formation' between the former α and γ carbon atoms.
O04359.png
See also:
di-π-methane rearrangement
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2258 [Terms] [Paper]