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Palladium-Catalyzed Enantioselective Intermolecular Coupling of Phenols and Allylic Alcohols

An enantioselective intermolecular coupling of oxygen nucleophiles and allylic alcohols to give β-aryloxycarbonyl compounds is disclosed using a chiral pyridine oxazoline-ligated palladium catalyst under mild conditions. As opposed to the formation of traditional Wacker-type products, enantioselecti...

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Published in:Journal of the American Chemical Society 2016-12, Vol.138 (49), p.15881-15884
Main Authors: Race, Nicholas J, Schwalm, Cristiane S, Nakamuro, Takayuki, Sigman, Matthew S
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Language:English
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description An enantioselective intermolecular coupling of oxygen nucleophiles and allylic alcohols to give β-aryloxycarbonyl compounds is disclosed using a chiral pyridine oxazoline-ligated palladium catalyst under mild conditions. As opposed to the formation of traditional Wacker-type products, enantioselective migratory insertion is followed by β-hydride elimination toward the adjacent alcohol. Deuterium labeling experiments suggest a syn-migratory insertion of the alkene into the Pd–O bond. A broad scope of phenols, various allylic alcohols, and an alkyl hydroperoxide are viable coupling partners in this process.
doi_str_mv 10.1021/jacs.6b11486
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Catalysis
Molecular Structure
Palladium - chemistry
Phenols - chemical synthesis
Phenols - chemistry
Propanols - chemical synthesis
Propanols - chemistry
Stereoisomerism
title Palladium-Catalyzed Enantioselective Intermolecular Coupling of Phenols and Allylic Alcohols
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