Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1313944 | Journal of Fluorine Chemistry | 2015 | 6 Pages |
•1,3-Dipolar cycloadditions of nitrile oxides and nitrones are reported.•SF5-substituted alkynes are used in 1,3-dipolar cycloaddition reactions.•Preparations of SF5-substituted isoxazoles and isoxazolines are reported.
A synthetic methodology utilizing 1,3-dipolar cycloadditions was developed for the preparation of pentafluorosulfanyl-substituted heterocycles using SF5-substituted arylacetylenes as key building block dipolarophiles. A group of 4-SF5-isoxazoles were prepared in moderate yields using in situ generated nitrile oxides, and 4-SF5-substituted isoxazolines were obtained when nitrones were used as the 1,3-dipole.
Graphical abstract1,3-Dipolar cycloadditions of nitrile oxides and nitrones with SF5-substituted alkynes.Figure optionsDownload full-size imageDownload as PowerPoint slide