Current time in Korea 12:39 Dec 02 (Wed) Year 2020 KCS KCS Publications
KCS Publications
My Journal  Log In  Register
HOME > Search > Browsing(BKCS) > Archives

Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 9
BKCSDE 35(9)
September 20, 2014 

Synthesis of 3,4,5-Trisubstituted Isoxazoles through Gold-Catalyzed Cascade Cyclization−Oxidative Alkynylation and Cyclization-Fluorination of 2-Alkynone O-Methyloximes
Doo-Hee Song, Jae-Sang Ryu*
Gold, Isoxazole, O-Methyloxime, Cross-coupling, Alkyne
Gold-catalyzed tandem cyclization−oxidative alkynylation and cyclization-fluorination reactions of 2- alkynone O-methyloximes are described. The reactions proceed smoothly at room temperature in the presence of 10 mol % of (PPh3)AuNTf2, 2.5 equivalents of selectfluor, and 2 equivalents of K3PO4. 2-Alkynone Omethyloximes undergo intramolecular oxyauration/cyclization and ensuing oxidative cross-coupling and fluorination process to afford the corresponding 3,4,5-trisubstituted isoxazoles in a cascade manner.
2635 - 2644
Full Text