3,5-Diarylisoxazoles 2 a-i were prepared in moderate to high yields (51-94%) by oxidation of chalcone oximes with a new metal complex oxidant, tetrakis(pyridine)cobalt(II) dichromate (TPCD).
A Novel and Convenient Method for the Synthesis of 3, 5-Diarylisoxazoles
作者:Vidya G. Desai、Santosh G. Tilve
DOI:10.1080/00397919908086477
日期:1999.9
Abstract α,β-Unsaturated oximes of chalcones on treatment with 2,3-Dichloro-5,6-dicyano-l,4-benzoquinone (DDQ) in methanol furnish 3,5-disubstituted isoxazoles in good yield.