Intramolecularcoupling of
diradicals of different sizes (1,4-, 1,5-, 1,6-, 1,7-, 1,8-
diradicals,
as well as very remote
diradicals) formed through
intramolecular hydrogen
abstraction by an excited ketone, yielding cyclic
alcohols of different sizes.
Source:
PAC, 2007, 79, 293
(Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006))
on page 441