A Convenient Synthetic Method of Isoxazole Derivatives Using Copper(II) Nitrate
作者:Ken-ichi Itoh、Tadashi Aoyama、Hiroaki Satoh、Kenta Hasegawa、Natsumi Meguro、Akira C. Horiuchi、Toshio Takido、Mitsuo Kodomari
DOI:10.3987/com-14-12979
日期:——
3-Acetylisoxazoles were synthesized by the reaction of alkenes or alkynes in acetone as solvent with copper(II) nitrate and formic acid. In the case of ethyl acetate as solvent, 3-benzoylisoxazoles were yielded by the reaction of alkynes and acetophenone with copper(II) nitrate and nitric acid. This synthetic method provides a convenient production of isoxazole derivatives.
Synthetic Diversity from a Versatile and Radical Nitrating Reagent
We leverage the slow liberation of nitrogen dioxide from a newly discovered, inexpensive succinimide-derived reagent to allow for the C-H diversification of alkenes and alkynes. Beyond furnishing a library of aryl β-nitroalkenes, this reagent provides unparalleled access to β-nitrohydrins and β-nitroethers. Detailed mechanistic studies strongly suggest that a mesolytic N-N bond fragmentation liberates