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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120972


    Title: Transition-Metal-Free Tandem Cyclization/N-Arylation Reaction: A Method to Access Biaryl Sultam Derivatives via a Diradical Pathway
    Authors: Thorat, Vijaykumar H.;(謝仁傑), Jen-Chieh Hsieh;Cheng, Chien-Hong
    Date: 2020-08-12
    Issue Date: 2021-08-20 12:13:03 (UTC+8)
    Abstract: A novel procedure for the transition-metal-free tandem cyclization/N-arylation reaction sequence of an aryne with a 1,2,3,4-benzothiatriazine-1,1-dioxide is reported. This reaction goes through the intramolecular homolytic cyclization to generate an N–H biaryl sultam intermediate, which enables aryne insertion to access diversely functionalized biaryl sultam derivatives with high yields. The mechanism study indicates that homolytic cyclization is executed by a diradical species, initiated from the thermal decomposition of 1,2,3,4-benzothiatriazine-1,1-dioxide to release a nitrogen molecule.
    Relation: Organic Letter 22(16), p.6623–6627
    DOI: 10.1021/acs.orglett.0c02393
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

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