:Aza Paternò−Büchi reaction
{{Short description|Chemical reaction}}
Aza Paternò−Büchi reaction involves an ππ* excited state of alkene reacting with a ground state imine. This strategy was developed by the laboratory Sivaguru and co-workers{{Cite journal|last1=Kumarasamy|first1=Elango|last2=Kandappa|first2=Sunil Kumar|last3=Raghunathan|first3=Ramya|last4=Jockusch|first4=Steffen|last5=Sivaguru|first5=Jayaraman|date=2017-06-12|title=Realizing an Aza Paternò-Büchi Reaction|journal=Angewandte Chemie International Edition|language=en|volume=56|issue=25|pages=7056–7061|doi=10.1002/anie.201702273|pmid=28452104|doi-access=free}} to overcome the shortcomings involving direct excitation of imines. Traditionally addition of excited imines to carbon-carbon double bonds involves making the imines as part of a carbocycle.{{Cite journal|last=Padwa|first=Albert.|date=February 1977|title=Photochemistry of the carbon-nitrogen double bond|journal=Chemical Reviews|language=en|volume=77|issue=1|pages=37–68|doi=10.1021/cr60305a004|issn=0009-2665}}
