Abstract
A method for stoichiometric functionalization of benzothiophene is developed by Heck-type coupling of alkenes with intramolecularly-generated thiopalladacycles obtained from palladium salts and ortho-thioanisole-substituted propargyl imines. The synthetic strategy for preparing structurally diverse 3-alkenylbenzo[b]thiophene is also extended to 3-alkenylbenzo[b]selenophenes.
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