Palladium/N-heterocyclic carbene catalysed regio and diastereoselective reaction of ketones with allyl reagents via inner-sphere mechanism
Abstract
The palladium-catalysed allylic substitution reaction is one of the most important reactions in transition-metal catalysis and has been well-studied in the past decades. Most of the reactions proceed through an outer-sphere mechanism, affording linear products when monosubstituted allyl reagents are used. Here, we report an efficient Palladium-catalysed protocol for reactions of beta-substituted ketones with monosubstituted allyl substrates, simply by using N-heterocyclic carbene as ligand, leading to branched products with up to three contiguous stereocentres in a (syn, anti)-mode with excellent regio and diastereoselectivities. The scope of the protocol in organic synthesis has been examined preliminarily. As a result, mechanistic studies by both experiments and density functional theory ( DFT) calculations reveal that the reaction proceeds via an inner-sphere mechanism-nucleophilic attack of enolate oxygen on Palladium followed by C-C bond-forming [3,3']-reductive elimination.
- Authors:
-
- Chinese Academy of Sciences, Shanghai (China). State Key Laboratory of Organometallic Chemistry, Shanghai Instit. of Organic Chemistry
- Cornell University, Ithaca, NY (United States). Dept. of Chemistry and Chemical Biology, Baker Laboratory
- Chinese Academy of Sciences, Shanghai (China). State Key Laboratory of Organometallic Chemistry, Shanghai Instit. of Organic Chemistry and Shanghai Hong Kong Joint Laboratory in Chemical Synthesis
- Publication Date:
- Research Org.:
- Chinese Academy of Sciences, Shanghai (China); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1287338
- Grant/Contract Number:
- SC0001057
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature Communications
- Additional Journal Information:
- Journal Volume: 7; Journal ID: ISSN 2041-1723
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; asymmetric conjugate addition; chiral phosphine-ligands; c bond formation; allylpalladium complexes; reductive elimination; alpha-allylation; alkylation; construction; derivatives; metathesis
Citation Formats
Bai, Da -Chang, Yu, Fei -Le, Wang, Wan -Ying, Chen, Di, Li, Hao, Liu, Qing -Rong, Ding, Chang -Hua, Chen, Bo, and Hou, Xue -Long. Palladium/N-heterocyclic carbene catalysed regio and diastereoselective reaction of ketones with allyl reagents via inner-sphere mechanism. United States: N. p., 2016.
Web. doi:10.1038/ncomms11806.
Bai, Da -Chang, Yu, Fei -Le, Wang, Wan -Ying, Chen, Di, Li, Hao, Liu, Qing -Rong, Ding, Chang -Hua, Chen, Bo, & Hou, Xue -Long. Palladium/N-heterocyclic carbene catalysed regio and diastereoselective reaction of ketones with allyl reagents via inner-sphere mechanism. United States. https://doi.org/10.1038/ncomms11806
Bai, Da -Chang, Yu, Fei -Le, Wang, Wan -Ying, Chen, Di, Li, Hao, Liu, Qing -Rong, Ding, Chang -Hua, Chen, Bo, and Hou, Xue -Long. Fri .
"Palladium/N-heterocyclic carbene catalysed regio and diastereoselective reaction of ketones with allyl reagents via inner-sphere mechanism". United States. https://doi.org/10.1038/ncomms11806. https://www.osti.gov/servlets/purl/1287338.
@article{osti_1287338,
title = {Palladium/N-heterocyclic carbene catalysed regio and diastereoselective reaction of ketones with allyl reagents via inner-sphere mechanism},
author = {Bai, Da -Chang and Yu, Fei -Le and Wang, Wan -Ying and Chen, Di and Li, Hao and Liu, Qing -Rong and Ding, Chang -Hua and Chen, Bo and Hou, Xue -Long},
abstractNote = {The palladium-catalysed allylic substitution reaction is one of the most important reactions in transition-metal catalysis and has been well-studied in the past decades. Most of the reactions proceed through an outer-sphere mechanism, affording linear products when monosubstituted allyl reagents are used. Here, we report an efficient Palladium-catalysed protocol for reactions of beta-substituted ketones with monosubstituted allyl substrates, simply by using N-heterocyclic carbene as ligand, leading to branched products with up to three contiguous stereocentres in a (syn, anti)-mode with excellent regio and diastereoselectivities. The scope of the protocol in organic synthesis has been examined preliminarily. As a result, mechanistic studies by both experiments and density functional theory ( DFT) calculations reveal that the reaction proceeds via an inner-sphere mechanism-nucleophilic attack of enolate oxygen on Palladium followed by C-C bond-forming [3,3']-reductive elimination.},
doi = {10.1038/ncomms11806},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Fri Jun 10 00:00:00 EDT 2016},
month = {Fri Jun 10 00:00:00 EDT 2016}
}
Web of Science
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Raising the p K a Limit of “Soft” Nucleophiles in Palladium-Catalyzed Allylic Substitutions: Application of Diarylmethane Pronucleophiles
journal, November 2013
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Congested C–C Bonds by Pd-Catalyzed Enantioselective Allyl–Allyl Cross-Coupling, a Mechanism-Guided Solution
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Steric Tuning of Silylacetylenes and Chiral Phosphine Ligands for Rhodium-Catalyzed Asymmetric Conjugate Alkynylation of Enones
journal, February 2008
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Strategy for Employing Unstabilized Nucleophiles in Palladium-Catalyzed Asymmetric Allylic Alkylations
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Palladium-Catalyzed Decarboxylative Asymmetric Allylic Alkylation of Enol Carbonates
journal, December 2009
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- Journal of the American Chemical Society, Vol. 131, Issue 51
Enyne versus Diene RCM in the Synthesis of Cyclopentene Derivatives toward the A Ring of FR182877.
journal, July 2004
- Funel, Jacques-Alexis; Prunet, Joëlle
- The Journal of Organic Chemistry, Vol. 69, Issue 16
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Stereocomplementary Construction of Optically Active Bicyclo[4.3.0]nonenone Derivatives
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