Photochemical process with skeletal isomerization by shift of an acyl group from position 1 to position 2 or 3.
See also: aza-di-π-methane rearrangement, di-π-methane rearrangement, di-π-silane rearrangement, oxa-di-π-methane rearrangement, photo-Fries rearrangement
Source:
PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 301 (https://doi.org/10.1351/pac200779030293)