Palladium-catalyzed asymmetric carbamoyl-carbonylation of alkenes
2021
An unprecedented palladium-catalyzed asymmetric carbamoyl-carbonylation of tethered alkenes with CO and alcohols has been developed. This reaction provided an efficient route to access oxindoles and γ-lactams bearing β-carbonyl substituted quaternary carbons in good yields with excellent chemo-, regio- and enantioselectivity. Gram-scale synthetic capability and facile transformations of the products to chiral spirooxindole and other functional molecules further illustrated the practicability of this reaction.
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