Solution-Phase Synthesis of a Diverse Library of Benzisoxazoles Utilizing the [3 + 2] Cycloaddition of in Situ-Generated Nitrile Oxides and Arynes
作者:Anton V. Dubrovskiy、Prashi Jain、Feng Shi、Gerald H. Lushington、Conrad Santini、Patrick Porubsky、Richard C. Larock
DOI:10.1021/co300159g
日期:2013.4.8
the [3 + 2] cycloaddition of nitrile oxides with arynes and further diversified by acylation/sulfonylation and palladium-catalyzed coupling processes. The eight key intermediate benzisoxazoles have been prepared by the reaction of o-(trimethylsilyl)aryl triflates and chlorooximes in the presence of CsF in good to excellent yields undermild reaction conditions. These building blocks have been used