Abstract
Diaryltellurides 2 and diarylditellurides 3 undergo a smooth tellurium-zinc exchange reaction in the presence of catalytic amounts of Ni(acac) 2 (5–10 mmol %) leading to arylzinc derivatives 1. The reaction can be extended to the preparation of alkylzinc compounds and allows a stereoselective cyclization to a 2,4-disubstituted tetrahydrofuran by a radical ring closure of an unsaturated telluride.
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