Wu B, Melvina, Wu X, Lee Yeow EK, Yoshikai N. Versatile telluracycle synthesis
via the sequential electrophilic telluration of C(sp
2)-Zn and C(sp
2)-H bonds.
Chem Sci 2017;
8:4527-4532. [PMID:
28970880 PMCID:
PMC5618338 DOI:
10.1039/c7sc01162h]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 04/06/2017] [Indexed: 12/01/2022] Open
Abstract
We report herein a new approach for the synthesis of tellurium-bridged aromatic compounds based on the sequential electrophilic telluration of C(sp2)-Zn and C(sp2)-H bonds with tellurium(iv) chlorides. A combination of transition metal-catalyzed (migratory) arylmetalation of alkynes and sequential telluration allows for the expedient construction of a library of functionalized benzo[b]tellurophenes. Furthermore, a variety of heteroarene-fused benzotellurophenes and other novel tellurium-embedded polycyclic aromatics can be readily synthesized from the corresponding 2-iodoheterobiaryls.
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