Benzyne Click Chemistry: Synthesis of Benzotriazoles from Benzynes and Azides
作者:Feng Shi、Jesse P. Waldo、Yu Chen、Richard C. Larock
DOI:10.1021/ol800675u
日期:2008.6.1
A variety of substituted benzotriazoles have been prepared by the [3 + 2] cycloaddition of azides to benzynes. The reaction scope is quite general, affording a rapid and easy entry to substituted, functionalized benzotriazoles under mild conditions.
A method for the C-H activation of aryl triazene compounds followed by intramolecular amination is described. It involves the use of a catalytic amount of Pd(OAc)(2) that efficiently effects the cyclization to provide 1-aryl-1H-benzotriazoles at moderate temperature.
Development and Application of <i>O</i>-(Trimethylsilyl)aryl Fluorosulfates for the Synthesis of Arynes
作者:Qiao Chen、Hongmei Yu、Zhaoqing Xu、Li Lin、Xianxing Jiang、Rui Wang
DOI:10.1021/acs.joc.5b00923
日期:2015.7.2
A class of o-(trimethylsilyl)aryl fluorosulfates was synthesized by a concise method and successfully used as aryne precursors for the first time. Different trapping agents such as azides, furans, and acyl acetoacetates could successfully react with the aryne precursors under mild conditions with good to excellent yields.
Benzyne Click Chemistry with in Situ Generated Aromatic Azides
作者:Fengzhi Zhang、John E. Moses
DOI:10.1021/ol9002338
日期:2009.4.2
An efficient synthesis of substituted benzotriazoles using an azide-alkyne 1,3-dipolar cycloaddition "click reaction" is described. Key to the procedure is the in situ generation of the reactive aromatic azide and benzyne reaction partners.