Aryl(TMP)iodonium Tosylate Reagents as a Strategic Entry Point to Diverse Aryl Intermediates: Selective Access to Arynes
作者:Aleksandra Nilova、Bryan Metze、David R. Stuart
DOI:10.1021/acs.orglett.1c01534
日期:2021.6.18
Arenes are broadly found motifs in societally important molecules. Access to diverse arene chemical space is critically important, and the ability to do so from common reagents is highly desirable. Aryl(TMP)iodonium tosylates provide one such access point to arene chemical space via diverse aryl intermediates. Here we demonstrate that controlling reaction pathways selectively leads to arynes with a
A Selective C−H Deprotonation Strategy to Access Functionalized Arynes by Using Hypervalent Iodine
作者:Sunil K. Sundalam、Aleksandra Nilova、Thomas L. Seidl、David R. Stuart
DOI:10.1002/anie.201603222
日期:2016.7.11
highly functionalized arynesfrom unsymmetrical aryl(mesityl)iodonium tosylate salts. The iodonium salts are prepared in a single pot from either commercially available aryl iodides or arylboronic acids. The aryne intermediates are generated by ortho‐C−H deprotonation of aryl(mesityl)iodonium salt with a commercially available amide base and trapped in a cycloaddition reaction with furan in moderate to good
On the use of 2-(trimethylsilyl)iodobenzene as a benzyne precursor
作者:James A. Crossley、James D. Kirkham、Duncan L. Browne、Joseph P.A. Harrity
DOI:10.1016/j.tetlet.2010.10.052
日期:2010.12
A mild method for the generation of benzynes from 2-(trimethylsilyl)iodobenzene derivatives is reported. The employment of silver fluoride in conjunction with caesium fluoride is key for promoting useful levels of elimination and providing benzyne derived products in good yields. Moreover, the substrates are accessed by a novel alkynyl iodide cycloaddition.
An alkynylboronate cycloaddition strategy to functionalised benzyne derivatives
作者:James D. Kirkham、Patrick M. Delaney、George J. Ellames、Eleanor C. Row、Joseph P. A. Harrity
DOI:10.1039/c0cc01345e
日期:——
A new approach to benzyne precursors has been developed that involves the [4+2] cycloaddition of trimethylsilyl alkynylboronates with 2-pyrones, followed by oxidation and trifluoromethylsulfonylation of the boronate moiety.