The regioselective 1,3-dipolar cycloaddition of alpha-bromo-pentafluorophenyl vinylsulfonate with nitrile oxides has been used to rapidly access a range of 3,5-isoxazoles which could be converted directly to their corresponding sulfonamides.
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| http://dx.doi.org/10.1039/b911098d | DOI Listing |
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