Abstract
An efficient method for the preparation of isothiochromene derivatives through the palladium-catalyzed intramolecular hydrothiolation reaction of halides and thiourea is reported. Two carbon–sulfur bonds are formed in this one-pot palladium-catalyzed cascade reaction. This new protocol is free from foul-smelling thiols and operates under mild conditions to give isothiochromene derivatives in excellent yields and with excellent 6-endo-dig selectivity.
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