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.
A Domino Process for Benzyne Preparation: Dual Activation of <i>o</i>-(Trimethylsilyl)phenols by Nonafluorobutanesulfonyl Fluoride
Benzynes were generated from o-(trimethylsilyl)phenols using nonafluorobutanesulfonyl fluoride (NfF) by a domino process, i.e., the nonaflation of the phenolic hydroxyl group of o-(trimethylsilyl)phenols by NfF followed by the attack of the produced fluoride ion on the trimethylsilyl group. The generated benzyne immediately underwent various reactions to give polysubstituted benzenes.