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 under mild reaction conditions. These building blocks have been used
苯并异恶唑的文库是通过腈与芳烃的[3 + 2]环加成反应合成的,并通过酰化/磺酰化和钯催化的偶联过程进一步多样化。八种关键中间体苯并异恶唑是通过在CsF存在下,邻-(三甲基甲硅烷基)芳基三氟甲磺酸酯和氯肟在温和的反应条件下以良好或优异的收率反应制得的。这些构件已被用作各种3,5,6-三取代的苯并异恶唑的关键组分。