We developed a one-pot method for the generation of benzynes from a range of readily available 2-hydroxyphenylboronic acids. This method features the in situ activation of both boronic acid and hydroxyl groups of the substrate to enhance benzyne generation at 60 °C. Such mild conditions facilitate the generation of functionalized benzynes that immediately react with diverse arynophiles to produce multisubstituted
Cycloaddition of benzynes and nitrile oxides: synthesis of benzisoxazoles
作者:James A. Crossley、Duncan L. Browne
DOI:10.1016/j.tetlet.2010.02.103
日期:2010.4
A mild and efficient process has been developed for the synthesis of benzisoxazoles through the cycloaddition of benzynes and nitrileoxides. This method allows access to both (hetero)aromatic and alkenyl-substituted benzisoxazoles. Preliminary studies concerning regioselectivity are also reported.