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Yongpanich P, Chatrangsan K, Tummatorn J, Thongsornkleeb C, Ruchirawat S. Controllable Chemoselectivity Cascade Reactions for the Synthesis of Phenanthrenols via Palladium-Catalyzed-Suzuki/Heck Reaction and Michael Addition. Chem Asian J 2024; 19:e202400126. [PMID: 38441246 DOI: 10.1002/asia.202400126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/02/2024] [Indexed: 03/28/2024]
Abstract
Palladium serves as a multi-functional catalyst which is controllable by tuning reaction conditions. This work demonstrated the utilization of a palladium catalyst for the synthesis of phenanthrenols by cascade palladium-catalyzed Suzuki/Heck reaction between chalcone and 2-bromophenylboronic acid, followed by Michael addition. The sequential reaction could be controlled by reactivity of the palladium catalyst in different solvents and concentrations of reagents. This protocol could be applied to a broad range of substrates to give products in low to good yields.
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Affiliation(s)
- Phornphan Yongpanich
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxi-cology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
| | - Kamonlak Chatrangsan
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxi-cology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
| | - Jumreang Tummatorn
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxi-cology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxi-cology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxi-cology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, 10210, Bangkok, Thailand
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Bulger AS, Nasrallah DJ, Tena Meza A, Garg NK. Enantioselective nickel-catalyzed Mizoroki-Heck cyclizations of amide electrophiles. Chem Sci 2024; 15:2593-2600. [PMID: 38362425 PMCID: PMC10866352 DOI: 10.1039/d3sc05797f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/08/2024] [Indexed: 02/17/2024] Open
Abstract
Amide cross-couplings that rely on C-N bond activation by transition metal catalysts have emerged as valuable synthetic tools. Despite numerous discoveries in this field, no catalytic asymmetric variants have been disclosed to date. Herein, we demonstrate the first such transformation, which is the Mizoroki-Heck cyclization of amide substrates using asymmetric nickel catalysis. This proof-of-concept study provides an entryway to complex enantioenriched polycyclic scaffolds and advances the field of amide C-N bond activation chemistry.
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Affiliation(s)
- Ana S Bulger
- Department of Chemistry and Biochemistry, University of California at Los Angeles Los Angeles California 90095 USA
| | - Daniel J Nasrallah
- Department of Chemistry and Biochemistry, University of California at Los Angeles Los Angeles California 90095 USA
| | - Arismel Tena Meza
- Department of Chemistry and Biochemistry, University of California at Los Angeles Los Angeles California 90095 USA
| | - Neil K Garg
- Department of Chemistry and Biochemistry, University of California at Los Angeles Los Angeles California 90095 USA
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Pipaón Fernández N, Gaube G, Woelk KJ, Burns M, Hruszkewycz DP, Leitch DC. Palladium-Catalyzed Direct C–H Alkenylation with Enol Pivalates Proceeds via Reversible C–O Oxidative Addition to Pd(0). ACS Catal 2022. [DOI: 10.1021/acscatal.2c01305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nahiane Pipaón Fernández
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
| | - Gregory Gaube
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
| | - Kyla J. Woelk
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
| | - Mathias Burns
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
| | - Damian P. Hruszkewycz
- Chemical Development, GlaxoSmithKline, 1250 S Collegeville Rd, Collegeville, Pennsylvania 19426, United States
| | - David C. Leitch
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada
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