Intramolecular 2+2 Photocycloaddition of 3-and 4-(But-3-enyl)oxyquinolones: Influence of the Alkene Substitution Pattern, Photophysical Studies, and Enantioselective Catalysis by a Chiral Sensitizer

Maturi, M. M.; Wenninger, M.; Alonso, R.; Bauer, A.; Pothig, A.; Riedle, E.; Bach, T.

doi:10.1002/chem.201300203

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Document type:: Journal Article
Author(s):: Maturi, M. M.; Wenninger, M.; Alonso, R.; Bauer, A.; Pothig, A.; Riedle, E.; Bach, T.
Title:: Intramolecular 2+2 Photocycloaddition of 3-and 4-(But-3-enyl)oxyquinolones: Influence of the Alkene Substitution Pattern, Photophysical Studies, and Enantioselective Catalysis by a Chiral Sensitizer
Abstract:: The intramolecular [2+2] photocycloaddition of four 4-(but-3-enyl)oxyquinolones (substitution pattern at the terminal alkene carbon atom: CH2, Z-CHEt, E-CHEt, CMe2) and two 3-(but-3-enyl)oxyquinolones (substitution pattern: CH2, CMe2) was studied. Upon direct irradiation at =300nm, the respective cyclobutane products were formed in high yields (8395
Congress title:: ISI Document Delivery No.: 150UT Times Cited: 0 Cited Reference Count: 99 Maturi, Mark M. Wenninger, Matthias Alonso, Rafael Bauer, Andreas Poethig, Alexander Riedle, Eberhard Bach, Thorsten Deutsche Forschungsgemeinschaft (DFG) [GRK 1626]; GRK; Alexander von Humboldt research fellowship This project was supported by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the DFG Research Training Group "Chemical Photocatalysis" (GRK 1626). M. M. M. and M. W. acknowledge fellowship support by the GRK. R. A. is the recipient of an Alexander von Humboldt research fellowship. We thank Olaf Ackermann and Georg Rudolf (AK Sieber) for help with the HPLC analysis. 0 Wiley-v c h verlag gmbh Weinheim «
ISI Document Delivery No.: 150UT Times Cited: 0 Cited Reference Count: 99 Maturi, Mark M. Wenninger, Matthias Alonso, Rafael Bauer, Andreas Poethig, Alexander Riedle, Eberhard Bach, Thorsten Deutsche Forschungsgemeinschaft (DFG) [GRK 1626]; GRK; Alexander von Humboldt research fellowship This project was supported by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the DFG Research Training Group "Chemical Photocatalysis" (GRK 1626). M. M. M. and M. W. acknowledge fellowship suppo... »
Journal title:: Chemistry-a European Journal
Year:: 2013
Journal volume:: 19
Journal issue:: 23
Pages contribution:: 7461-7472
Fulltext / DOI:: doi:10.1002/chem.201300203
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