0000000001314343
AUTHOR
Daniel Hack
Enantioselective synthesis of 4H-pyranonaphthoquinones via sequential squaramide and silver catalysis
Chemical communications 52(8), 1669-1672(2016). doi:10.1039/C5CC09592A
Asymmetric, Three-Component, One-Pot Synthesis of Spiropyrazolones and 2,5-Chromenediones from Aldol Condensation/NHC-Catalyzed Annulation Reactions
A novel one-pot, three-component diastereo- and enantioselective synthesis of spiropyrazolones has been developed involving the aldol condensation of an enal to generate α,β-unsaturated pyrazolones, which react with a second equivalent of enal through an N-heterocyclic carbene (NHC)-catalyzed [3+2] annulation. The desired spirocyclopentane pyrazolones are obtained in moderate to good yields and good to excellent stereoselectivities. Alternatively, starting from cyclic 1,3-diketones, 2,5-chromenediones are available through [2+4] annulation.
CCDC 1442230: Experimental Crystal Structure Determination
Related Article: Lei Wang, Sun Li, Pankaj Chauhan, Daniel Hack,Arne R. Philipps, Rakesh Puttreddy, Kari Rissanen, Gerhard Raabe, Dieter Enders|2016|Chem.-Eur.J.|22|5123|doi:10.1002/chem.201600515
CCDC 1446165: Experimental Crystal Structure Determination
Related Article: Lei Wang, Sun Li, Pankaj Chauhan, Daniel Hack,Arne R. Philipps, Rakesh Puttreddy, Kari Rissanen, Gerhard Raabe, Dieter Enders|2016|Chem.-Eur.J.|22|5123|doi:10.1002/chem.201600515
CCDC 1437688: Experimental Crystal Structure Determination
Related Article: Uğur Kaya, Pankaj Chauhan, Daniel Hack, Kristina Deckers, Rakesh Puttreddy, Kari Rissanen, Dieter Enders|2016|Chem.Commun.|52|1669|doi:10.1039/C5CC09592A