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Mbaezue II, Li SG, Reddy ACS, Titi HM, Tsantrizos YS. Solvent-Switchable Remote C-H Activation via 1,4-Palladium Migration Enables Site-Selective C-P Bond Formation: A Tool for the Synthesis of P-Chiral Phosphinyl Imidazoles. Org Lett 2024; 26:4200-4204. [PMID: 38739265 DOI: 10.1021/acs.orglett.4c00903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Solvent-switchable and site-selective phosphorylation of imidazoles at the C2 or C5 position of the imidazole ring was achieved via 1,4-palladium migration. P-Chiral tert-butyl(aryl)phosphine oxides were cross-coupled to 1-(2-bromophenyl)-1H-imidazoles with high enantiospecificity, thereby leading to a novel class of chiral imidazole-based phosphine oxides. As proof of concept, reduction of an analogue yielded the corresponding P-chiral 2-phosphinyl imidazole ligand, which was shown to induce high enantioselectivity in the formation of axially chiral molecules synthesized via Pd-catalyzed Suzuki-Miyaura cross-coupling.
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Affiliation(s)
- Ifenna I Mbaezue
- Department of Chemistry, McGill University. 801 Sherbrooke St. West, Montréal, Québec H3A 0B8, Canada
| | - Shi-Guang Li
- Department of Chemistry, McGill University. 801 Sherbrooke St. West, Montréal, Québec H3A 0B8, Canada
| | - Angula C S Reddy
- Department of Chemistry, McGill University. 801 Sherbrooke St. West, Montréal, Québec H3A 0B8, Canada
| | - Hatem M Titi
- Department of Chemistry, McGill University. 801 Sherbrooke St. West, Montréal, Québec H3A 0B8, Canada
| | - Youla S Tsantrizos
- Department of Chemistry, McGill University. 801 Sherbrooke St. West, Montréal, Québec H3A 0B8, Canada
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2
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Chen D, Li J, Zhang X, Liu G, Wang X, Liu Y, Liu X, Shan Y. Rapid Access to Fused Tetracyclic N-Heterocycles via Amino-to-Alkyl 1,5-Palladium Migration Coupled with Intramolecular C(sp 3)-C(sp 2) Coupling. Org Lett 2023; 25:6272-6277. [PMID: 37607048 DOI: 10.1021/acs.orglett.3c02034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An unprecedented route for the preparation of fused tetracyclic N-heterocycles is presented through the palladium-catalyzed cyclization of isocyanides with alkyne-tethered aryl iodides. In this transformation, a novel amino-to-alkyl 1,5-palladium migration/intramolecular C(sp3)-C(sp2) coupling sequence was observed first. More importantly, isocyanide exhibited three roles, serving simultaneously as a C1 synthon, a C1N1 synthon, and the donor of C(sp3) for C(sp3)-C(sp2) coupling, and the reaction was the sole successful example that achieved C(sp3)-H activation of isocyanide.
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Affiliation(s)
- Dianpeng Chen
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Jianming Li
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xiuhua Zhang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Gongle Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xin Wang
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yongwei Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Xuan Liu
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
| | - Yingying Shan
- Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China
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3
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Li M, Li SX, Chen DP, Gao F, Qiu YF, Wang XC, Quan ZJ, Liang YM. Regioselective C-H Active Carbonylation via 1,4-Palladium Migration. Org Lett 2023; 25:2761-2766. [PMID: 37052909 DOI: 10.1021/acs.orglett.3c00567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
We report a highly regioselective three-component coupling reaction of styrene, CO gas, and an amine compound to synthesize multisubstituted α,β-unsaturated amides, which involves a palladium-catalyzed sequential 1,4-palladium migration, C(sp2)-H activation, carbonylation, and amination. Salient features of this strategy include the use of 1 atm of CO, excellent stereochemistry, and good functional group tolerance. Further, a series of control experiments and density functional theory calculations were performed to afford some insights for the transfer mechanism.
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Affiliation(s)
- Ming Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Shun-Xi Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Dong-Ping Chen
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Fan Gao
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Yi-Feng Qiu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Xi-Cun Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Zheng-Jun Quan
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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4
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Sun J, Ye H, Zhang H, Wu XX. Palladium-Catalyzed Cyclization Coupling with Cyclobutanone-Derived N-Tosylhydrazones: Synthesis of Benzofuran-3-Cyclobutylidenes and Spirocyclobutanes. J Org Chem 2023; 88:1568-1577. [PMID: 36648061 DOI: 10.1021/acs.joc.2c02620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A palladium-catalyzed cyclization coupling of iodoarene-tethered alkynes with cyclobutanone-derived N-tosylhydrazones is reported, providing a convenient and efficient approach to benzofuran-3-cyclobutylidenes. On this basis, spirocyclobutanes can be generated smoothly in an efficient cascade manner by the addition of dienophiles. Good yields and scalability are demonstrated. Sequential intramolecular carbopalladation, palladium-carbene migratory insertion, δ-hydride elimination, and cycloaddition processes are involved.
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Affiliation(s)
- Jie Sun
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, P. R. China
| | - Hao Ye
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, P. R. China
| | - Haibin Zhang
- College of Pharmaceutical and Environmental Engineering, Nantong Vocational University, Nantong 226007, P. R. China
| | - Xin-Xing Wu
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, P. R. China
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5
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Li MY, Wei D, Feng CG, Lin GQ. Tandem Reactions involving 1,4‐Palladium Migrations. Chem Asian J 2022; 17:e202200456. [PMID: 35661425 DOI: 10.1002/asia.202200456] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/01/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Meng-Yao Li
- Shanghai Cancer Institute Shanghai Jiao Tong University School of Medicine 1630 Dongfang Road 200127 Shanghai CHINA
| | - Dong Wei
- Shanghai Jiao Tong University General Surgery No.1665 Kongjiang Road, Shanghai 200092 Shanghai CHINA
| | - Cheng-Guo Feng
- Chinese Academy of Sciences Shanghai Institute of Organic Chemistry CAS Key Laboratory of Synthetic Chemistry of Natural Substances CHINA
| | - Guo-Qiang Lin
- Chinese Academy of Sciences Shanghai Institute of Organic Chemistry CAS Key Laboratory of Synthetic Chemistry of Natural Substances CHINA
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Ji XM, Chen YZ, Fu JG, Zhang SS, Feng CG. Phosphorylation of C(sp 3)-H Bonds via 1,4-Palladium Migration. Org Lett 2022; 24:3781-3785. [PMID: 35593884 DOI: 10.1021/acs.orglett.2c01303] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1,4-Palladium migration has emerged as a reliable method for directed C-H functionalization. In contrast to coupling with carbon nucleophiles, limited examples with heteroatom nucleophiles have been reported. Herein we report a palladium-catalyzed intermolecular C(sp3)-H phosphorylation reaction via 1,4-palladium migration, which is often difficult because of the strong coordination of phosphorus reagents to palladium catalysts. Phosphorylation of C(sp3)-H bonds is accomplished in good reaction yields with excellent regioselectivity. The judicious selection of the phosphine ligand proved to be the key to the success of this cascade process.
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Affiliation(s)
- Xiao-Ming Ji
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yan-Zhen Chen
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jian-Guo Fu
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Shu-Sheng Zhang
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Chen-Guo Feng
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.,Key Laboratory of Synthetic Chemistry of Natural Substances, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
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7
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Chen S, Van der Eycken EV, Sharma UK. Remote Alkenylation
via
Carbopalladation/1,4‐Palladium Migration/Heck Reaction Sequence with Unactivated Alkenyl Alcohols. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Su Chen
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
- Peoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya street 6 RU-117198 Moscow Russia
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
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8
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Zuo X, Cheng C, Zhang Y. Palladium-catalyzed cross-coupling of 2-iodobiphenyls with ortho-chloroacetophenones through dual C–H arylation for the construction of tribenzo[ a, c, f]cyclooctanones. Org Chem Front 2022. [DOI: 10.1039/d2qo00647b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pd-catalyzed cross-coupling reaction of 2-iodobiphenyls with ortho-chloroacetophenones has been developed through C–H activation. The reaction provides a straightforward method for the construction of tribenzo[a,c,f]cyclooctanones.
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Affiliation(s)
- Xiang Zuo
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Cang Cheng
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
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