Versatile Telluracyclc Synthesis via the Sequential Electrophilic Telluration of C(sp2)–Zn and C(sp2)–H Bonds

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.

Publication
Wu, B.; Melvina; Wu, X.; Yeow, E. K. L.; Yoshikai, N. Chem. Sci. 2017, 8, 4527-4532.