51
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Yu CG, Matsuo Y. Nickel-Catalyzed Deaminative Acylation of Activated Aliphatic Amines with Aromatic Amides via C-N Bond Activation. Org Lett 2020; 22:950-955. [PMID: 31961696 DOI: 10.1021/acs.orglett.9b04497] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Deaminative functionalization of aliphatic primary amines has great synthetic utility. Herein, we describe a Ni-catalyzed reductive deaminative cross-electrophile coupling reaction between Katritzky salts and aromatic amides. This work provides examples of the synthesis of various ketones from alkylpyridinium salts, including both primary and secondary alkylamines. Given its mild reaction conditions and high functional group tolerance, this cross-coupling strategy is expected to be useful for late-stage functionalization of complex compounds.
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Affiliation(s)
- Chu-Guo Yu
- Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry, School of Chemistry and Materials Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , China
| | - Yutaka Matsuo
- Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry, School of Chemistry and Materials Science , University of Science and Technology of China , 96 Jinzhai Road , Hefei , Anhui 230026 , China.,Institute of Materials Innovation, Institutes of Innovation for Future Society , Nagoya University , Furo-cho, Chikusa-ku , Nagoya 464-8603 , Japan
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52
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Muniyappan N, Sabiah S. Synthesis, structure, and characterization of picolyl‐ and benzyl‐linked biphenyl palladium N‐heterocyclic carbene complexes and their catalytic activity in acylative cross‐coupling reactions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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53
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Mehta MM, Boit TB, Dander JE, Garg NK. Ni-Catalyzed Suzuki-Miyaura Cross-Coupling of Aliphatic Amides on the Benchtop. Org Lett 2020; 22:1-5. [PMID: 31621338 PMCID: PMC6994262 DOI: 10.1021/acs.orglett.9b03434] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Suzuki-Miyaura cross-couplings of amides offer an approach to the synthesis of ketones that avoids the use of basic or pyrophoric nucleophiles. However, these reactions require glovebox manipulations, thus limiting their practicality. We report a benchtop protocol for Suzuki-Miyaura cross-couplings of aliphatic amides that utilizes a paraffin capsule containing a Ni(0) precatalyst and NHC ligand. This methodology is broad in scope, is scalable, and provides a user-friendly approach to convert aliphatic amides to alkyl-aryl ketones.
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Affiliation(s)
| | | | | | - Neil K. Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United States
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54
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Li S, Jie K, Yan W, Pan Q, Zhang M, Wang Y, Fu Z, Guo S, Cai H. Selective C–C bond cleavage of amides fused to 8-aminoquinoline controlled by a catalyst and an oxidant. Chem Commun (Camb) 2020; 56:13820-13823. [DOI: 10.1039/d0cc04960c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, copper-catalyzed direct C–C bond cleavage of amides fused to 8-aminoquinoline as a directing group to form urea in the presence of amines and dioxygen is reported.
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Affiliation(s)
- Sen Li
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Kun Jie
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Wenjie Yan
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Qingjun Pan
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Min Zhang
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Yufeng Wang
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Zhengjiang Fu
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Shengmei Guo
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
| | - Hu Cai
- Department of Chemistry
- Nanchang University
- Nanchang
- P. R. China
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55
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Synthesis and comparative study of catalytic activity between Pd-metallodendrimer and Pd/Cu-bimetallodendrimer nanoparticle-based on triazine. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2019.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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56
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Li R, Xu H, Zhao N, Jin X, Dang Y. Origins of Chemoselectivity in the Ni-Catalyzed Biaryl and Pd-Catalyzed Acyl Suzuki–Miyaura Cross-Coupling of N-Acetyl-Amides. J Org Chem 2019; 85:833-840. [DOI: 10.1021/acs.joc.9b02826] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Riqing Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Hui Xu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Ning Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Xiaojiao Jin
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
| | - Yanfeng Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin 300072, China
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57
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Li G, Szostak M. Kinetically Controlled, Highly Chemoselective Acylation of Functionalized Grignard Reagents with Amides by N−C Cleavage. Chemistry 2019; 26:611-615. [DOI: 10.1002/chem.201904678] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/05/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Guangchen Li
- Department of ChemistryRutgers University 73 Warren Street Newark NJ 07102 USA
| | - Michal Szostak
- Department of ChemistryRutgers University 73 Warren Street Newark NJ 07102 USA
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58
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Zhou T, Ji CL, Hong X, Szostak M. Palladium-catalyzed decarbonylative Suzuki-Miyaura cross-coupling of amides by carbon-nitrogen bond activation. Chem Sci 2019; 10:9865-9871. [PMID: 32015810 PMCID: PMC6977462 DOI: 10.1039/c9sc03169c] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/31/2019] [Indexed: 12/12/2022] Open
Abstract
Palladium-catalyzed Suzuki-Miyaura cross-coupling or aryl halides is widely employed in the synthesis of many important molecules in synthetic chemistry, including pharmaceuticals, polymers and functional materials. Herein, we disclose the first palladium-catalyzed decarbonylative Suzuki-Miyaura cross-coupling of amides for the synthesis of biaryls through the selective activation of the N-C(O) bond of amides. This new method relies on the precise sequence engineering of the catalytic cycle, wherein decarbonylation occurs prior to the transmetallation step. The reaction is compatible with a wide range of boronic acids and amides, providing valuable biaryls in high yields (>60 examples). DFT studies support a mechanism involving oxidative addition, decarbonylation and transmetallation and provide insight into high N-C(O) bond activation selectivity. Most crucially, the reaction establishes the use of palladium catalysis in the biaryl Suzuki-Miyaura cross-coupling of the amide bond and should enable the design of a wide variety of cross-coupling methods in which palladium rivals the traditional biaryl synthesis from aryl halides and pseudohalides.
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Affiliation(s)
- Tongliang Zhou
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , NJ 07102 , USA .
| | - Chong-Lei Ji
- Department of Chemistry , Zhejiang University , Hangzhou 310027 , China .
| | - Xin Hong
- Department of Chemistry , Zhejiang University , Hangzhou 310027 , China .
| | - Michal Szostak
- College of Chemistry and Chemical Engineering , Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry , Ministry of Education, Shaanxi University of Science and Technology , Xi'an 710021 , China
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , NJ 07102 , USA .
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59
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Xiong L, Deng R, Liu T, Luo Z, Wang Z, Zhu X, Wang H, Zeng Z. Selective C−N Bond Cleavage of
N
‐Acylisatins: Towards High Performance Acylation/Arylation/Transamination Reagents. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900819] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Li Xiong
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Rong Deng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapySun Yat-sen University Cancer Center Guangzhou 510060 People's Republic of China
| | - Tingting Liu
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Zhongfeng Luo
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Zijia Wang
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Xiao‐Feng Zhu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and TherapySun Yat-sen University Cancer Center Guangzhou 510060 People's Republic of China
| | - Hui Wang
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
| | - Zhuo Zeng
- College of Chemistry and EnvironmentSouth China Normal University Guangzhou 510006 People's Republic of China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai People's Republic of China 200032
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60
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Gaikwad VV, Mane PA, Dey S, Bhanage BM. Dppf‐Ligated Palladium Complex as an Efficient Catalyst for the Synthesis of Biaryl Ketones Using Co
2
(CO)
8
as a C1 Source with High TON and TOF. ChemistrySelect 2019. [DOI: 10.1002/slct.201901930] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Vinayak V. Gaikwad
- Department of Chemistry, Institute of Chemical TechnologyN.Parekh Marg, Matunga, Mumbai 400 019 Maharashtra India)
| | - Pravin A. Mane
- Chemistry Division, Bhabha Atomic Research Centre Mumbai 400 085 India
| | - Sandip Dey
- Chemistry Division, Bhabha Atomic Research Centre Mumbai 400 085 India
- Homi Bhabha National InstituteTraining School Complex Mumbai 400 094 India
| | - Bhalchandra M. Bhanage
- Department of Chemistry, Institute of Chemical TechnologyN.Parekh Marg, Matunga, Mumbai 400 019 Maharashtra India)
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61
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Luo Z, Xiong L, Liu T, Zhang Y, Lu S, Chen Y, Guo W, Zhu Y, Zeng Z. Palladium-Catalyzed Decarbonylative Suzuki–Miyaura Coupling of Amides To Achieve Biaryls via C–N Bond Cleavage. J Org Chem 2019; 84:10559-10568. [DOI: 10.1021/acs.joc.9b01103] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhongfeng Luo
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Li Xiong
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Tingting Liu
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Yuqi Zhang
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Siqi Lu
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Yuwen Chen
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Weijie Guo
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Yulin Zhu
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
| | - Zhuo Zeng
- College of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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62
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Zhao Q, Zhang J, Szostak M. Ruthenium(0)-Catalyzed Cross-Coupling of Anilines with Organoboranes by Selective Carbon–Nitrogen Cleavage. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02440] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Qun Zhao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Jin Zhang
- College of Chemistry and Chemical Engineering and Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- College of Chemistry and Chemical Engineering and Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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63
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Kadam AA, Metz TL, Qian Y, Stanley LM. Ni-Catalyzed Three-Component Alkene Carboacylation Initiated by Amide C–N Bond Activation. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01620] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Abhishek A. Kadam
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Tanner L. Metz
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Yiqiu Qian
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Levi M. Stanley
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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64
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65
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Wu W, Yi J, Xu H, Li S, Yuan R. An Efficient, One-Pot Transamidation of 8-Aminoquinoline Amides Activated by Tertiary-Butyloxycarbonyl. Molecules 2019; 24:E1234. [PMID: 30934862 PMCID: PMC6480081 DOI: 10.3390/molecules24071234] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 03/22/2019] [Accepted: 03/22/2019] [Indexed: 11/25/2022] Open
Abstract
The efficient, one-pot access to the transamidation of 8-aminoquinoline (8-AQ), notorious for its harsh removal conditions, has been widely employed as an auxiliary in C⁻H functionalization reactions due to its strong directing ability. In this study, the facile and mild Boc protection of the corresponding 8-AQ amide was critical to activate the amide C(acyl)⁻N bond by twisting its geometry to lower the amidic resonance energy. Both aryl and alkyl amines proceeded transamidation in one-pot, user-friendly conditions with excellent yields.
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Affiliation(s)
- Wengang Wu
- College of Chemistry, Chemical Engineering and Materials Science of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China.
| | - Jun Yi
- Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, China.
| | - Huipeng Xu
- Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, China.
| | - Shuangjun Li
- Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, China.
| | - Rongxin Yuan
- Jiangsu Laboratory of Advanced Functional Material, School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, China.
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66
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Rendón-Nava D, Álvarez-Hernández A, Rheingold AL, Suárez-Castillo OR, Mendoza-Espinosa D. Hydroxyl-functionalized triazolylidene-based PEPPSI complexes: metallacycle formation effect on the Suzuki coupling reaction. Dalton Trans 2019; 48:3214-3222. [PMID: 30672933 DOI: 10.1039/c8dt04432e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the preparation and full characterization of a series of hydroxyl functionalized 1,2,3-triazolylidene-based PEPPSI complexes 2a-c and their catalytic application in the Suzuki cross coupling reaction of aryl chlorides/amides with boronic acids. Under basic reaction conditions, complexes 2a-c show a notable increase in their catalytic efficiency compared with two ether-wingtip functionalized PEPPSI analogues (3 and 4) and a commercially available NHC-Pd complex (5). The catalytic results suggest that deprotonation of the hydroxyl group in complexes 2a-c plays an important role in the overall process. Deprotonation of the alcohol moiety of complexes 2a-b with sodium tert-butoxide allows for the isolation of metallacycles 6a-b, which are proposed as the active species of cross coupling reactions.
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Affiliation(s)
- David Rendón-Nava
- Área Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo, 42090, Mexico.
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67
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N-Acylphthalimides: Efficient Acyl Coupling Reagents in Suzuki–Miyaura Cross-Coupling by N–C Cleavage Catalyzed by Pd–PEPPSI Precatalysts. Catalysts 2019. [DOI: 10.3390/catal9020129] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We report a general, highly selective method for Suzuki–Miyaura cross-coupling of N-acylphthalimides via N–C(O) acyl cleavage catalyzed by Pd–PEPPSI-type precatalysts. Of broad synthetic interest, the method introduces N-acylphthalimides as new, bench-stable, highly reactive, twist-controlled, amide-based precursors to acyl-metal intermediates. The reaction delivers functionalized biaryl ketones by acylative Suzuki–Miyaura cross-coupling with readily available boronic acids. Studies demonstrate that cheap, easily prepared, and broadly applicable Pd–PEPPSI-type precatalysts supported by a sterically demanding IPr (1,3-Bis-(2,6-diisopropylphenyl)imidazol-2-ylidene) ancillary ligand provide high yields in this reaction. Preliminary selectivity studies and the effect of Pd–N-heterocyclic carbenes (NHC) complexes with allyl-type throw-away ligands are described. We expect that N-acylphthalimides will find significant use as amide-based acyl coupling reagents and cross-coupling precursors to acyl-metal intermediates.
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68
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Zhang ZB, Ji CL, Yang C, Chen J, Hong X, Xia JB. Nickel-Catalyzed Kumada Coupling of Boc-Activated Aromatic Amines via Nondirected Selective Aryl C–N Bond Cleavage. Org Lett 2019; 21:1226-1231. [DOI: 10.1021/acs.orglett.9b00242] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zheng-Bing Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Chong-Lei Ji
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ce Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Jie Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ji-Bao Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), University of Chinese Academy of Sciences, Chinese Academy of Sciences, Lanzhou 730000, China
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69
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Szostak R, Szostak M. Tröger's Base Twisted Amides: High Amide Bond Twist and N-/O-Protonation Aptitude. J Org Chem 2019; 84:1510-1516. [PMID: 30571109 DOI: 10.1021/acs.joc.8b02937] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Tröger's base twisted amides have emerged as attractive scaffolds to readily achieve substantial nonplanarity of the amide bond in a bicyclic lactam framework. Herein, we report structures and proton affinities of a diverse set of Tröger's base twisted amides and compare them with related nonplanar bridged lactams. The data demonstrate that Tröger's base twisted amides embedded in a [3.3.1] scaffold are among the most twisted bridged lactams prepared to date. Intriguingly, while these amides also favor N-protonation, our data show that the best model for probing N-protonation aptitude in the series of nonplanar amides are less twisted benzofused 1-azabicyclo[3.3.1]nonan-2-one derivatives. This work (1) provides the understanding for future design of nonplanar bridged lactams to directly access N-protonated amide bonds, (2) validates the use of the additive Winkler-Dunitz distortion parameter, and (3) emphasizes the importance of peripheral modification to modulate properties of nonplanar amides.
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Affiliation(s)
- Roman Szostak
- Department of Chemistry , Wroclaw University , F. Joliot-Curie 14 , Wroclaw 50-383 , Poland
| | - Michal Szostak
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , New Jersey 07102 , United States
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70
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Vemula SR, Chhoun MR, Cook GR. Well-Defined Pre-Catalysts in Amide and Ester Bond Activation. Molecules 2019; 24:E215. [PMID: 30634382 PMCID: PMC6359523 DOI: 10.3390/molecules24020215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/02/2019] [Accepted: 01/02/2019] [Indexed: 11/17/2022] Open
Abstract
Over the past few decades, transition metal catalysis has witnessed a rapid and extensive development. The discovery and development of cross-coupling reactions is considered to be one of the most important advancements in the field of organic synthesis. The design and synthesis of well-defined and bench-stable transition metal pre-catalysts provide a significant improvement over the current catalytic systems in cross-coupling reactions, avoiding excess use of expensive ligands and harsh conditions for the synthesis of pharmaceuticals, agrochemicals and materials. Among various well-defined pre-catalysts, the use of Pd(II)-NHC, particularly, provided new avenues to expand the scope of cross-coupling reactions incorporating unreactive electrophiles, such as amides and esters. The strong σ-donation and tunable steric bulk of NHC ligands in Pd-NHC complexes facilitate oxidative addition and reductive elimination steps enabling the cross-coupling of broad range of amides and esters using facile conditions contrary to the arduous conditions employed under traditional catalytic conditions. Owing to the favorable catalytic activity of Pd-NHC catalysts, a tremendous progress was made in their utilization for cross-coupling reactions via selective acyl C⁻X (X=N, O) bond cleavage. This review highlights the recent advances made in the utilization of well-defined pre-catalysts for C⁻C and C⁻N bond forming reactions via selective amide and ester bond cleavage.
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Affiliation(s)
- Sandeep R Vemula
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108⁻6050, USA.
| | - Michael R Chhoun
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108⁻6050, USA.
| | - Gregory R Cook
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108⁻6050, USA.
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71
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Abstract
Acyl Suzuki cross-coupling involves the coupling of an organoboron reagent with an acyl electrophile (acyl halide, anhydride, ester, amide). This review provides a timely overview of the very important advances that have recently taken place in the acylative Suzuki cross-coupling. Particular emphasis is directed toward the type of acyl electrophiles, catalyst systems and new cross-coupling partners. This review will be of value to synthetic chemists involved in this rapidly developing field of Suzuki cross-coupling as well as those interested in using acylative Suzuki cross-coupling for the synthesis of ketones as a catalytic alternative to stoichiometric nucleophilic additions or Friedel-Crafts reactions.
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72
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Zhou PX, Shi S, Wang J, Zhang Y, Li C, Ge C. Palladium/copper-catalyzed decarbonylative heteroarylation of amides via C–N bond activation. Org Chem Front 2019. [DOI: 10.1039/c9qo00106a] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A novel strategy for the synthesis of 2-arylated oxazole derivatives via palladium/copper-catalyzed decarbonylative heteroarylation of amides via C–N bond activation by ground-state destabilization is reported.
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Affiliation(s)
- Ping-Xin Zhou
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
| | - Shuai Shi
- School of Foreign Language
- Xinxiang Medical University
- Xinxiang
- China
| | - Jia Wang
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
| | - Yalei Zhang
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
| | - Changzheng Li
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
| | - Chunpo Ge
- School of Basic Medical Sciences
- Xinxiang Medical University
- Xinxiang
- China
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73
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Wang H, Zhang SQ, Hong X. Computational studies on Ni-catalyzed amide C–N bond activation. Chem Commun (Camb) 2019; 55:11330-11341. [DOI: 10.1039/c9cc05763c] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This review summarizes the mechanistic models of Ni-catalyzed amide C–N bond cleavage and discusses their applications in related transformations.
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Affiliation(s)
- Hongliang Wang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Shuo-Qing Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Xin Hong
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
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74
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Wang T, Guo J, Wang X, Guo H, Jia D, Wang H, Liu L. Cross coupling of benzylammonium salts with boronic acids using a well-defined N-heterocyclic carbene–palladium(ii) precatalyst. RSC Adv 2019; 9:5738-5741. [PMID: 35515917 PMCID: PMC9060798 DOI: 10.1039/c8ra10439e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/11/2019] [Indexed: 11/25/2022] Open
Abstract
N-heterocyclic carbene–palladium(ii)-catalyzed cross-coupling of benzylammonium salts with arylboronic acids for the synthesis of diarylmethane derivatives via C–N bond activation has been developed. Notably, in the presence of the easily prepared and bench-stable Pd-PEPPSI precatalyst, the Csp3–N bond activation of the benzylammonium salt even proceeded smoothly in isopropanol at room temperature. N-heterocyclic carbene–palladium(ii)-catalyzed cross-coupling of benzylammonium salts with arylboronic acids for the synthesis of diarylmethane derivatives via C–N bond activation has been developed.![]()
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Affiliation(s)
- Tao Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jiarui Guo
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Xiaojuan Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Han Guo
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Dingli Jia
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Hengjin Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
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75
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Abstract
Rhodium-catalyzed pyridyl-directed alkenyl C–H bond functionalization with aroyl- or acryl-amides via C–H/C–N activation was carried out.
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Affiliation(s)
- Yao Huang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry
- University of Science and Technology of China
- Hefei
- People's Republic of China
| | - Wen-Jing Pan
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry
- University of Science and Technology of China
- Hefei
- People's Republic of China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry
- University of Science and Technology of China
- Hefei
- People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering
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76
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Chaudhari MB, Gnanaprakasam B. Recent Advances in the Metal-Catalyzed Activation of Amide Bonds. Chem Asian J 2018; 14:76-93. [DOI: 10.1002/asia.201801317] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/13/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Moreshwar B. Chaudhari
- Indian Institute of Science Education and Research (IISER) Pune; Dr. Homi Bhabha Road Pune 411008 India
| | - Boopathy Gnanaprakasam
- Indian Institute of Science Education and Research (IISER) Pune; Dr. Homi Bhabha Road Pune 411008 India
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77
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Pd-Catalyzed Suzuki-Miyaura Cross-Coupling of Pentafluorophenyl Esters. Molecules 2018; 23:molecules23123134. [PMID: 30501083 PMCID: PMC6321476 DOI: 10.3390/molecules23123134] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/15/2018] [Accepted: 11/23/2018] [Indexed: 11/23/2022] Open
Abstract
Although the palladium-catalyzed Suzuki-Miyaura cross-coupling of aryl esters has received significant attention, there is a lack of methods that utilize cheap and readily accessible Pd-phosphane catalysts, and can be routinely carried out with high cross-coupling selectivity. Herein, we report the first general method for the cross-coupling of pentafluorophenyl esters (pentafluorophenyl = pfp) by selective C–O acyl cleavage. The reaction proceeds efficiently using Pd(0)/phosphane catalyst systems. The unique characteristics of pentafluorophenyl esters are reflected in the fully selective cross-coupling vs. phenolic esters. Of broad synthetic interest, this report establishes pentafluorophenyl esters as new, highly reactive, bench-stable, economical, ester-based, electrophilic acylative reagents via acyl-metal intermediates. Mechanistic studies strongly support a unified reactivity scale of acyl electrophiles by C(O)–X (X = N, O) activation. The reactivity of pfp esters can be correlated with barriers to isomerization around the C(acyl)–O bond.
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78
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Abstract
Pd/DNA catalysts were prepared in a mixed H2O/EtOH solvent using palladium precursors, Pd(OAc)2 and PdCl2, in different dosages and salmon fish sperm DNA. As prepared, the Pd/DNA contained Pd(II) and Pd(0) nanoparticles of various sizes and morphologies, depending on the preparation method. Pd/DNA efficiently catalyzed the Suzuki–Miyaura cross-coupling of various aryl bromides with phenylboronic acids. The catalyst was recovered by simple phase separation and then reused in seven consecutive cycles with a high activity.
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79
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Abstract
We present recent advances and key developments in the field of decarbonylative cross-coupling reactions of amides by a formal double N–C/C–C bond activation as well as discuss future challenges and potential applications for this exciting field.
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Affiliation(s)
- Chengwei Liu
- Department of Chemistry
- Rutgers University
- Newark
- USA
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