Transposed Paternò−Büchi reaction
The transposed Paternò−Büchi reaction involves a ππ* excited state of alkene reacting with a ground state carbonyl functionality. This is reversal of the traditional Paternò−Büchi reaction where an excited carbonyl group reacts with a ground state alkene. This strategy was first reported by Sivaguru and co-workers with reaction of enamides.{{Cite journal|last1=Kumarasamy|first1=Elango|last2=Raghunathan|first2=Ramya|last3=Kandappa|first3=Sunil Kumar|last4=Sreenithya|first4=A.|last5=Jockusch|first5=Steffen|last6=Sunoj|first6=Raghavan B|last7=Sivaguru|first7=J.|date=2017-01-18|title=Transposed Paternò–Büchi Reaction|url=https://pubs.acs.org/doi/10.1021/jacs.6b05936|journal=Journal of the American Chemical Society|language=en|volume=139|issue=2|pages=655–662|doi=10.1021/jacs.6b05936|pmid=27958726 |issn=0002-7863|url-access=subscription}}
