1
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Ying J, Zhou T, Liu Y, Zhou L, Wan JP. Transition-Metal-Free C-H Trifluoromethylthiolation of N,N-Disubstituted Enaminones To Access CF 3S-Functionalized Enaminones and Their Application in the Synthesis of CF 3S-Heteroaryls. J Org Chem 2024; 89:9078-9085. [PMID: 38830227 DOI: 10.1021/acs.joc.4c00704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The α-C-H trifluoromethylthiolation of N,N-disubstituted enaminones has been achieved with simple and cheap CF3SO2Na as the CF3S source. The reactions were run at mild temperature (0 °C to rt) using POCl3 as the only reducing reagent. The work represents the first example on the synthesis of α-trifluoromethylthio enaminones via direct C-H functionalization. In addition, the resulting CF3S-functionalized enaminones have been proven as useful building blocks in the synthesis of various CF3S-functionalized heteroaromatic compounds by simple annulation reactions.
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Affiliation(s)
- Jinbiao Ying
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330033, China
| | - Tao Zhou
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330033, China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330033, China
| | - Liyun Zhou
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330033, China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330033, China
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2
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Seebacher W, Hoffelner M, Belaj F, Pirker T, Alajlani M, Bauer R, Pferschy-Wenzig EM, Saf R, Weis R. Formation of 5-Aminomethyl-2,3-dihydropyridine-4(1 H)-ones from 4-Amino-tetrahydropyridinylidene Salts. Molecules 2023; 28:6869. [PMID: 37836712 PMCID: PMC10574582 DOI: 10.3390/molecules28196869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 09/25/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Various 4-aminotetrahydropyridinylidene salts were treated with aldehydes in an alkaline medium. Their conversion to 5-substituted β-hydroxyketones in a one-step reaction succeeded only with an aliphatic aldehyde. Instead, aromatic aldehydes gave 5-substituted β-aminoketones or a single δ-diketone. The new compounds were characterized using spectroscopic methods and a single crystal structure analysis. Some of them showed anticancer and antibacterial properties.
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Affiliation(s)
- Werner Seebacher
- Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Schubertstrasse 1, 8010 Graz, Austria
| | - Michael Hoffelner
- Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Schubertstrasse 1, 8010 Graz, Austria
| | - Ferdinand Belaj
- Institute of Chemistry, University of Graz, Schubertstrasse 1, 8010 Graz, Austria
| | - Teresa Pirker
- Pharmacognosy, Institute for Pharmaceutical Sciences, University of Graz, Beethovenstrasse 8, 8010 Graz, Austria (R.B.)
| | - Muaaz Alajlani
- Faculty of Pharmacy, Al-Sham Private University, 011 Damascus, Syria
| | - Rudolf Bauer
- Pharmacognosy, Institute for Pharmaceutical Sciences, University of Graz, Beethovenstrasse 8, 8010 Graz, Austria (R.B.)
| | - Eva-Maria Pferschy-Wenzig
- Pharmacognosy, Institute for Pharmaceutical Sciences, University of Graz, Beethovenstrasse 8, 8010 Graz, Austria (R.B.)
| | - Robert Saf
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria
| | - Robert Weis
- Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Schubertstrasse 1, 8010 Graz, Austria
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3
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Lu MZ, Goh J, Maraswami M, Jia Z, Tian JS, Loh TP. Recent Advances in Alkenyl sp 2 C-H and C-F Bond Functionalizations: Scope, Mechanism, and Applications. Chem Rev 2022; 122:17479-17646. [PMID: 36240299 DOI: 10.1021/acs.chemrev.2c00032] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Alkenes and their derivatives are featured widely in a variety of natural products, pharmaceuticals, and advanced materials. Significant efforts have been made toward the development of new and practical methods to access this important class of compounds by selectively activating the alkenyl C(sp2)-H bonds in recent years. In this comprehensive review, we describe the state-of-the-art strategies for the direct functionalization of alkenyl sp2 C-H and C-F bonds until June 2022. Moreover, metal-free, photoredox, and electrochemical strategies are also covered. For clarity, this review has been divided into two parts; the first part focuses on currently available alkenyl sp2 C-H functionalization methods using different alkene derivatives as the starting materials, and the second part describes the alkenyl sp2 C-F bond functionalization using easily accessible gem-difluoroalkenes as the starting material. This review includes the scope, limitations, mechanistic studies, stereoselective control (using directing groups as well as metal-migration strategies), and their applications to complex molecule synthesis where appropriate. Overall, this comprehensive review aims to document the considerable advancements, current status, and emerging work by critically summarizing the contributions of researchers working in this fascinating area and is expected to stimulate novel, innovative, and broadly applicable strategies for alkenyl sp2 C-H and C-F bond functionalizations in the coming years.
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Affiliation(s)
- Ming-Zhu Lu
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Jeffrey Goh
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Manikantha Maraswami
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhenhua Jia
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Teck-Peng Loh
- College of Advanced Interdisciplinary Science and Technology, Henan University of Technology, Zhengzhou 450001, China.,School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.,Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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4
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Duan X, Liu K, Meng Z, Guo Y, Li H, Liu N, Qu W, Duan X, Ma J. 1,3-Dibromo-5, 5-dimethylhydantoin (DBDMH)-Promoted Cross-Coupling of Enaminones with Phenols under Metal-Free Conditions. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Gong HP, Quan ZJ, Wang XC. Palladium-catalyzed Hiyama cross-couplings of 2-chloro pyrimidines with organosilanes. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-02044-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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6
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Behera N, Sethi S. REVIEW: Understanding oxidative addition in organometallics: a closer look. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.2008378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Sipun Sethi
- School of Chemistry, Sambalpur University, Sambalpur, Odisha, India
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7
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Wu XX, Ye H, Jiang G, Hu L. Domino Heck/Hiyama cross-coupling: trapping of the σ-alkylpalladium intermediate with arylsilanes. Org Biomol Chem 2021; 19:4254-4257. [PMID: 33890598 DOI: 10.1039/d1ob00595b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A palladium-catalyzed domino Heck cyclization/Hiyama coupling reaction by the trapping of the σ-alkylpalladium intermediate with arylsilanes is described. A wide range of aryl-tethered alkenes and arylsilanes are all compatible with the reaction conditions. This approach shows good yields and excellent functional group tolerance, presenting a more practical and sustainable alternative to the conventional domino Heck cyclization/Suzuki coupling reaction.
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Affiliation(s)
- Xin-Xing Wu
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, People's Republic of China.
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8
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Li X, Sun K, Shen W, Zhang Y, Lu MZ, Luo X, Luo H. Rhodium(III)-Catalyzed Direct C-H Arylation of Various Acyclic Enamides with Arylsilanes. Org Lett 2021; 23:31-36. [PMID: 33337165 DOI: 10.1021/acs.orglett.0c03578] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The stereoselective β-C(sp2)-H arylation of various acyclic enamides with arylsilanes via Rh(III)-catalyzed cross-coupling reaction was illustrated. The methodology was characterized by extraordinary efficacy and stereoselectivity, a wide scope of substrates, good functional group tolerance, and the adoption of environmentally friendly arylsilanes. The utility of this present method was evidenced by the gram-scale synthesis and further elaboration of the product. In addition, Rh(III)-catalyzed C-H activation is considered to be the critical step in the reaction mechanism.
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Affiliation(s)
- Xiaolan Li
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Kai Sun
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Wenjuan Shen
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Yong Zhang
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ming-Zhu Lu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Xuzhong Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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9
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Lu MZ, Ding X, Shao C, Hu Z, Luo H, Zhi S, Hu H, Kan Y, Loh TP. Direct Hiyama Cross-Coupling of (Hetero)arylsilanes with C(sp 2)-H Bonds Enabled by Cobalt Catalysis. Org Lett 2020; 22:2663-2668. [PMID: 32182081 DOI: 10.1021/acs.orglett.0c00631] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a chelation-assisted C-H arylation of various indoles with sterically and electronically diverse (hetero)arylsilanes enabled by cost-effective Cp*-free cobalt catalysis. Key to the success of this strategy is the judicious choice of copper(II) fluoride as a bifunctional sliane activator and catalyst reoxidant. This methodology features a broad substrate scope and good functional group compatibility. The synthetic versatility of this protocol has been highlighted by the gram-scale synthesis and late-stage diversification of biologically active molecules.
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Affiliation(s)
- Ming-Zhu Lu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Xin Ding
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Changdong Shao
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Zhengsong Hu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Sanjun Zhi
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Huayou Hu
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Yuhe Kan
- Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials, School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian 223300, China
| | - Teck-Peng Loh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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10
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Das R, Khot NP, Deshpande AS, Kapur M. Catalyst Control in Switching the Site Selectivity of C-H Olefinations of 1,2-Dihydroquinolines: An Approach to Positional-Selective Functionalization of Quinolines. Chemistry 2019; 26:927-938. [PMID: 31625636 DOI: 10.1002/chem.201904512] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Indexed: 12/19/2022]
Abstract
A unique approach to achieve site-selective C-H olefinations exclusively at the C-3- or C-8-positions in the quinoline framework has been developed by catalyst control. Distal C(3)-H functionalization is achieved by using palladium catalysis, whereas proximal C(8)-H functionalization is obtained by employing ruthenium catalysis. Switching the site selectivity within a single substrate directly indicates two diverse pathways, which are operating under the palladium- and ruthenium-catalyzed reaction conditions.
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Affiliation(s)
- Riki Das
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066, MP, India.,Present address: Department of Chemistry, University of Minnesota, Minneapolis, MN, 55455-0431, USA
| | - Nandkishor Prakash Khot
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066, MP, India
| | - Akanksha Santosh Deshpande
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institution of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, 462066, MP, India
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11
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Sorabad GS, Maddani MR. Metal-free, green and efficient oxidative α halogenation of enaminones by halo acid and DMSO. NEW J CHEM 2019. [DOI: 10.1039/c8nj06412a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal free oxidative halogenation of N-aryl enaminones has been demonstrated using a DMSO–halo acid combination under mild reaction conditions. The present method is a straightforward approach and is also applied for the synthesis of chromenone derivatives in excellent yields.
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Affiliation(s)
- Ganesh Shivayogappa Sorabad
- Department of Post-Graduate Studies and Research in Chemistry
- Mangalore University
- Mangalagangothri-574199
- India
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12
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Nareddy P, Jordan F, Szostak M. Ruthenium(II)-Catalyzed Direct C–H Arylation of Indoles with Arylsilanes in Water. Org Lett 2017; 20:341-344. [DOI: 10.1021/acs.orglett.7b03567] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pradeep Nareddy
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Frank Jordan
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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13
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Dai Z, Xiao X, Jiang X. Nucleophilic disulfurating reagents for unsymmetrical disulfides construction via copper-catalyzed oxidative cross coupling. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Nareddy P, Jordan F, Szostak M. Highly chemoselective ruthenium(ii)-catalyzed direct arylation of cyclic and N, N-dialkyl benzamides with aryl silanes. Chem Sci 2017; 8:3204-3210. [PMID: 28507696 PMCID: PMC5414548 DOI: 10.1039/c7sc00156h] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 02/16/2017] [Indexed: 11/21/2022] Open
Abstract
The ruthenium(ii)-catalyzed oxidative cross-coupling of C(sp2)-H bonds with organosilanes has been accomplished for the first time. This novel protocol enlists challenging cyclic and N,N-dialkyl benzamides as weakly-coordinating substrates to achieve highly regioselective C(sp2)-H arylation as a proof-of-concept, taking advantage of the attractive features of organosilanes as coupling partners. This innovative method is characterized by very high chemoselectivity, installing halide functional groups (I, Br, Cl) that are incompatible with Ru(ii)-carboxylate systems employing halides as cross-coupling partners, while obviating the need for sensitive organometallic reagents and cryogenic temperatures typical to the classic directed-ortho-metallation (DoM) techniques, employing benzamides to afford bioactive structural motifs.
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Affiliation(s)
- Pradeep Nareddy
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , NJ 07102 , USA .
| | - Frank Jordan
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , NJ 07102 , USA .
| | - Michal Szostak
- Department of Chemistry , Rutgers University , 73 Warren Street , Newark , NJ 07102 , USA .
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15
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Lu MZ, Wang CQ, Song SJ, Loh TP. Rhodium(iii)-catalyzed directed C–H benzylation and allylation of indoles with organosilicon reagents. Org Chem Front 2017. [DOI: 10.1039/c6qo00589f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rhodium(iii)-catalyzed C2-benzylation and allylation of indoles with organosilicon reagents via chelation-assisted C–H activation has been developed.
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Affiliation(s)
- Ming-Zhu Lu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
| | - Cheng-Qiang Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
| | - Sheng-Jin Song
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
| | - Teck-Peng Loh
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
- Division of Chemistry and Biological Chemistry
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16
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Gao Y, Wei L, Liu Y, Wan JP. Iodine-mediated synthesis of sulfur-bridged enaminones and chromones via double C(sp2)–H thiolation. Org Biomol Chem 2017; 15:4631-4634. [DOI: 10.1039/c7ob00619e] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The synthesis of sulfur-bridged enaminones and chromones has been readily achieved via double vinyl C–H thiolation under metal-free conditions by using enaminones and elemental sulfur.
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Affiliation(s)
- Yong Gao
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Li Wei
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
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17
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Tiwari VK, Kamal N, Kapur M. One Substrate, Two Modes of C–H Functionalization: A Metal-Controlled Site-Selectivity Switch in C–H Arylation Reactions. Org Lett 2016; 19:262-265. [DOI: 10.1021/acs.orglett.6b03558] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Virendra Kumar Tiwari
- Department of Chemistry,
330, Academic Building II, Indian Institute of Science Education and Research Bhopal, Bhopal-Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Neha Kamal
- Department of Chemistry,
330, Academic Building II, Indian Institute of Science Education and Research Bhopal, Bhopal-Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
| | - Manmohan Kapur
- Department of Chemistry,
330, Academic Building II, Indian Institute of Science Education and Research Bhopal, Bhopal-Bypass Road, Bhauri, Bhopal 462066, Madhya
Pradesh, India
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18
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Komiyama T, Minami Y, Hiyama T. Recent Advances in Transition-Metal-Catalyzed Synthetic Transformations of Organosilicon Reagents. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02374] [Citation(s) in RCA: 229] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Takeshi Komiyama
- Department
of Applied Chemistry, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Yasunori Minami
- Research
and Development Initiative, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Tamejiro Hiyama
- Research
and Development Initiative, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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19
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Zhao S, Liu B, Zhan BB, Zhang WD, Shi BF. Nickel-Catalyzed Ortho-Arylation of Unactivated (Hetero)aryl C–H Bonds with Arylsilanes Using a Removable Auxiliary. Org Lett 2016; 18:4586-9. [DOI: 10.1021/acs.orglett.6b02236] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sheng Zhao
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bin Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bei-Bei Zhan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Wei-Dong Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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20
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Foubelo F, Nájera C, Yus M. The Hiyama Cross-Coupling Reaction: New Discoveries. CHEM REC 2016; 16:2521-2533. [DOI: 10.1002/tcr.201600063] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 12/19/2022]
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21
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Rossi R, Lessi M, Manzini C, Marianetti G, Bellina F. Achievement of regioselectivity in transition metal-catalyzed direct C–H (hetero)arylation reactions of heteroarenes with one heteroatom through the use of removable protecting/blocking substituents or traceless directing groups. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.02.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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22
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Chattopadhyay AK, Hanessian S. Cyclic enaminones. Part I: stereocontrolled synthesis using diastereoselective and catalytic asymmetric methods. Chem Commun (Camb) 2016; 51:16437-49. [PMID: 26490402 DOI: 10.1039/c5cc05891k] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic enaminones are versatile intermediates to construct a variety of azacyclic frameworks and have been widely used in alkaloid synthesis. Here, we summarize three approaches for stereoselective syntheses of cyclic enaminones and their functionalized derivatives. These include chiral substrates (chirons) as starting materials, syntheses employing non-catalytic (stoichiometric) reagents, and catalytic asymmetric methods.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal, Station Centre Ville, C.P. 6128, Montreal, QC H3C 3J7, Canada.
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre Ville, C.P. 6128, Montreal, QC H3C 3J7, Canada.
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23
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Chattopadhyay AK, Hanessian S. Cyclic enaminones. Part II: applications as versatile intermediates in alkaloid synthesis. Chem Commun (Camb) 2016; 51:16450-67. [PMID: 26490499 DOI: 10.1039/c5cc05892a] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Among many other strategies, the enaminone approach is an important strategy to construct and diversify the azacyclic core in various alkaloids syntheses. In this brief review we discuss the application of cyclic enaminones as building blocks, as well as potential intermediates in the total synthesis of selected alkaloids.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre Ville, C. P. 6128, Montréal, Qc H3C 3J7, Canada.
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24
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Wan JP, Zhong S, Xie L, Cao X, Liu Y, Wei L. KIO3-Catalyzed Aerobic Cross-Coupling Reactions of Enaminones and Thiophenols: Synthesis of Polyfunctionalized Alkenes by Metal-Free C–H Sulfenylation. Org Lett 2016; 18:584-7. [DOI: 10.1021/acs.orglett.5b03608] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jie-Ping Wan
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Shanshan Zhong
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Lili Xie
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Xiaoji Cao
- Research
Centre of Analysis and Measurement, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang 310014, China
| | - Yunyun Liu
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Li Wei
- College
of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
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25
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Das D, Biswas A, Karmakar U, Chand S, Samanta R. C6-Selective Direct Alkylation of Pyridones with Diazo Compounds under Rh(III)-Catalyzed Mild Conditions. J Org Chem 2016; 81:842-8. [DOI: 10.1021/acs.joc.5b02349] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Debapratim Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Aniruddha Biswas
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Ujjwal Karmakar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Santanu Chand
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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26
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Luo H, Liu H, Zhang Z, Xiao Y, Wang S, Luo X, Wang K. Direct and site-selective Pd(ii)-catalyzed C-7 arylation of indolines with arylsilanes. RSC Adv 2016. [DOI: 10.1039/c6ra06915k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Rostamnia S, Golchin Hossieni H, Doustkhah E. Homoleptic chelating N-heterocyclic carbene complexes of palladium immobilized within the pores of SBA-15/IL (NHC–Pd@SBA-15/IL) as heterogeneous catalyst for Hiyama reaction. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Rostamnia S, Zeynizadeh B, Doustkhah E, Hosseini HG. Exfoliated Pd decorated graphene oxide nanosheets (PdNP–GO/P123): Non-toxic, ligandless and recyclable in greener Hiyama cross-coupling reaction. J Colloid Interface Sci 2015; 451:46-52. [DOI: 10.1016/j.jcis.2015.03.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 03/17/2015] [Accepted: 03/20/2015] [Indexed: 10/23/2022]
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29
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Qiu SQ, Xu YH, Loh TP. Palladium-Catalyzed Intermolecular Oxyarylation of Vinylacetates with Retention of an Alkenyl Moiety. Org Lett 2015; 17:3462-5. [PMID: 26135214 DOI: 10.1021/acs.orglett.5b01507] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Palladium-catalyzed intermolecular oxyarylation reaction of vinylacetates with retention of the double bond in the final product is developed. Under the optimized reaction conditions, the desired products of multisubstituted vinylesters could be obtained in moderate to high yields.
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Affiliation(s)
- Sheng-Qi Qiu
- †Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Yun-He Xu
- †Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Teck-Peng Loh
- †Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.,‡Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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30
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Jeong Y, Moon Y, Hong S. Tandem Dehydrogenation/Oxidation/Oxidative Cyclization Approach to Wrightiadione and Its Derivatives. Org Lett 2015; 17:3252-5. [PMID: 26090926 DOI: 10.1021/acs.orglett.5b01618] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Wrightiadione contains a unique tetracyclic isoflavone moiety and has been shown to exhibit a broad range of biological activities. An efficient and straightforward synthetic method for generating the molecular complexity of wrightiadione was developed through three-step tandem dehydrogenation/oxidation/oxidative cyclization reactions with a Pd/Cu catalytic system. This unprecedented one-pot route utilizes a broad range of substrates, providing a convenient and powerful synthetic tool for accessing naturally occurring tetracyclic isoflavone wrightiadione and its nitrogen-containing derivatives.
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Affiliation(s)
- Yujeong Jeong
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 305-701, Korea
| | - Youngtaek Moon
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 305-701, Korea
| | - Sungwoo Hong
- †Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea.,‡Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 305-701, Korea
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31
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Pawar GG, Tiwari VK, Jena HS, Kapur M. Heteroatom-Guided, Palladium-Catalyzed, Site-Selective CH Arylation of 4H-Chromenes: Diastereoselective Assembly of the Core Structure of Myristinin B through Dual CH Functionalization. Chemistry 2015; 21:9905-11. [DOI: 10.1002/chem.201500755] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Indexed: 12/23/2022]
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32
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He J, Takise R, Fu H, Yu JQ. Ligand-enabled cross-coupling of C(sp(3))-H bonds with arylsilanes. J Am Chem Soc 2015; 137:4618-21. [PMID: 25822198 DOI: 10.1021/jacs.5b00890] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Pd(II)-catalyzed cross-coupling of C(sp(3))-H bonds with organosilicon coupling partners has been achieved for the first time. The use of a newly developed quinoline-based ligand is essential for the cross-coupling reactions to proceed.
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Affiliation(s)
- Jian He
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ryosuke Takise
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Haiyan Fu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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33
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Kwon S, Kang D, Hong S. RhI-Catalyzed Site-Selective Decarbonylative Alkenylation and Arylation of Quinolones under Chelation Assistance. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500187] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Tian PP, Cai SH, Liang QJ, Zhou XY, Xu YH, Loh TP. Palladium-Catalyzed Difunctionalization of Internal Alkynes via Highly Regioselective 6-Endo Cyclization and Alkenylation of Enynoates: Synthesis of Multisubstituted Pyrones. Org Lett 2015; 17:1636-9. [DOI: 10.1021/acs.orglett.5b00272] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pan-Pan Tian
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Sai-Hu Cai
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | | | - Xing-Yi Zhou
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yun-He Xu
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Teck-Peng Loh
- Hefei
National Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371, Singapore
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35
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Chen S, Chang X, Tao Y, Chen H, Xia Y. Palladium(ii)-catalyzed direct alkenylation of dihydropyranones. Org Biomol Chem 2015; 13:10675-80. [DOI: 10.1039/c5ob00432b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium(ii)-catalyzed direct alkenylation reaction of dihydropyranones was developed.
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Affiliation(s)
- Shanshan Chen
- Department of Applied Chemistry
- School of Natural Sciences
- Anhui Agricultural University
- Hefei 230036
- China
| | - Xihao Chang
- Department of Applied Chemistry
- School of Natural Sciences
- Anhui Agricultural University
- Hefei 230036
- China
| | - Yu Tao
- Department of Applied Chemistry
- School of Natural Sciences
- Anhui Agricultural University
- Hefei 230036
- China
| | - Haoming Chen
- Department of Applied Chemistry
- School of Natural Sciences
- Anhui Agricultural University
- Hefei 230036
- China
| | - Yong Xia
- Department of Applied Chemistry
- School of Natural Sciences
- Anhui Agricultural University
- Hefei 230036
- China
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36
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Yu YY, Ranade AR, Georg GI. Transition Metal-Free Direct Trifluoromethylation of 2,3-Dihydropyridin-4(1H)-ones at Room Temperature. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400417] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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37
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Wan JP, Zhou Y, Cao S. Domino Reactions Involving the Branched C–N and C═C Cleavage of Enaminones Toward Pyridines Synthesis. J Org Chem 2014; 79:9872-7. [DOI: 10.1021/jo5018266] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jie-Ping Wan
- Key Laboratory of Functional
Small Organic Molecules, Ministry of Education and College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Youyi Zhou
- Key Laboratory of Functional
Small Organic Molecules, Ministry of Education and College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Shuo Cao
- Key Laboratory of Functional
Small Organic Molecules, Ministry of Education and College of Chemistry
and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China
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38
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Traficante CI, Delpiccolo CML, Mata EG. Palladium-catalyzed cross-coupling reactions of arylsiloxanes with aryl halides: application to solid-supported organic synthesis. ACS COMBINATORIAL SCIENCE 2014; 16:211-4. [PMID: 24689507 DOI: 10.1021/co5000322] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The solid-phase version of the Pd-catalyzed Hiyama reaction between a variety of aryltriethoxysilanes and immobilized aryl halides was developed. Smooth cross-coupling was achieved to afford the corresponding biaryl products in moderate to excellent yields. The described protocol would be particularly useful for the construction of 4'-substituted 1,1'-biphenyl derivatives.
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Affiliation(s)
- Carla I. Traficante
- Instituto
de Química
Rosario (CONICET—UNR), Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Argentina
| | - Carina M. L. Delpiccolo
- Instituto
de Química
Rosario (CONICET—UNR), Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Argentina
| | - Ernesto G. Mata
- Instituto
de Química
Rosario (CONICET—UNR), Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Argentina
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39
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Lu MZ, Lu P, Xu YH, Loh TP. Mild Rh(III)-Catalyzed Direct C–H Bond Arylation of (Hetero)Arenes with Arylsilanes in Aqueous Media. Org Lett 2014; 16:2614-7. [DOI: 10.1021/ol500754h] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ming-Zhu Lu
- Hefei National
Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Ping Lu
- Hefei National
Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Yun-He Xu
- Hefei National
Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Teck-Peng Loh
- Hefei National
Laboratory for Physical Sciences at the Microscale and Department
of Chemistry, University of Science and Technology of China, Hefei, 230026, China
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371
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40
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Fan H, Shang Y, Su W. Palladium-Catalyzed Direct Arylation of Polyfluoroarenes with Organosilicon Reagents. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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41
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Moon Y, Kim Y, Hong H, Hong S. Synthesis of heterocyclic-fused benzofurans via C-H functionalization of flavones and coumarins. Chem Commun (Camb) 2014; 49:8323-5. [PMID: 23925467 DOI: 10.1039/c3cc44456b] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method to effect C-O cyclization was developed via the C-H functionalization of chromones and coumarins, affording heterocyclic-fused benzofurans.
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Affiliation(s)
- Youngtaek Moon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea.
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42
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Kim YW, Georg GI. Boron-Heck reaction of cyclic enaminones: regioselective direct arylation via oxidative palladium(II) catalysis. Org Lett 2014; 16:1574-7. [PMID: 24650204 PMCID: PMC3993847 DOI: 10.1021/ol500105d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An oxidative boron-Heck reaction of cyclic enaminones with arylboronic acids is reported. This protocol provides a regioselective arylation at the C6 position of cyclic enaminones. When an N-carbamylated cyclic enaminone was employed, a switch to a conjugate addition reaction occurred in the presence of acid.
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Affiliation(s)
- Yong Wook Kim
- Department of Chemistry, Department of Medicinal Chemistry, and the Institute for Therapeutic Discovery and Development, University of Minnesota , 717 Delaware Street SE, Minneapolis, Minnesota 55414, United States
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43
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Ranade A, Georg GI. Enantioselective synthesis of 3,4-dihydro-1,2-oxazepin-5(2H)-ones and 2,3-dihydropyridin-4(1H)-ones from β-substituted β-hydroxyaminoaldehydes. J Org Chem 2014; 79:984-92. [PMID: 24785413 PMCID: PMC3985460 DOI: 10.1021/jo402445r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Indexed: 12/12/2022]
Abstract
The synthesis of 3,4-dihydro-1,2-oxazepin-5(2H)-ones and 2,3-dihydropyridin-4(1H)-ones from β-substituted β-hydroxyaminoaldehydes is reported. The β-hydroxyaminoaldehydes were prepared by enantioselective organocatalytic 1,4-addition of N-tert-butyl (tert-butyldimethylsilyl)oxycarbamate to α,β-unsaturated aldehydes (MacMillan protocol). Alkyne addition to the aldehydes followed by alcohol oxidation furnished N-Boc O-TBS-protected β-aminoynones. Removal of the TBS protecting group initiated a 7-endo-dig cyclization to yield previously unknown 3,4-dihydro-1,2-oxazepin-5(2H)-ones. Reductive cleavage of the N-O bond of the oxazepinones and Boc-deprotection provided 2-substituted 2,3-dihydropyridin-4(1H)-ones via 6-endo-trig cyclization. 2,3-Dihydropyridin-4(1H)-ones are versatile intermediates that have been used for the synthesis of many alkaloids. The new protocol allows the synthesis of 3-dihydropyridin-4(1H)-ones carrying an array of substituents at C2 that cannot be prepared from commercial β-amino acids or by one-carbon homologation of proteinogenic amino acids. The use of readily available β-hydroxylaminoaldehydes expands the utility of our previously reported method to prepare 2,3-dihydropyridin-4(1H)-ones from β-amino acids as the source of diversity and chirality. A broad substrate scope is possible because β-aminoaldehydes can be prepared from α,β-unsaturated aldehydes by an enantioselective organocatalytic process.
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Affiliation(s)
- Adwait
R. Ranade
- University
of Kansas, 1251 Wescoe
Hall Drive, 4070 Malott
Hall, Lawrence, Kansas 66045-7482, United States
- Department of Medicinal
Chemistry
and Institute for Therapeutics Discovery & Development, University of Minnesota, 717 Delaware Street South East, Minneapolis, Minnesota 55414, United States
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44
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Yu YY, Georg GI. Biomimetic Aerobic C-H Olefination of Cyclic Enaminones at Room Temperature: Development toward the Synthesis of 1,3,5-Trisubstituted Benzenes. Adv Synth Catal 2014; 356:1359-1369. [PMID: 25071423 DOI: 10.1002/adsc.201300904] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A green and mild protocol for the dehydrogenative olefination of cyclic enaminones was devised via palladium catalysis at room temperature using oxygen as the terminal oxidant. The synthetic utility of the olefinated cyclic enaminones afforded a series of unique 1,3,5-trisubstituted benzenes via an unanticipated Diels-Alder tandem reaction. The broad substrate scope and good yields achieved with this new protocol provide an alternative pathway for arene functionalization.
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Affiliation(s)
- Yi-Yun Yu
- Department of Chemistry, Department of Medicinal Chemistry and the Institute for Therapeutics Discovery and Development, University of Minnesota, Twin Cities, 717 Delaware St SE, Minneapolis, Minnesota, USA
| | - Gunda I Georg
- Department of Chemistry, Department of Medicinal Chemistry and the Institute for Therapeutics Discovery and Development, University of Minnesota, Twin Cities, 717 Delaware St SE, Minneapolis, Minnesota, USA
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45
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Tiwari VK, Pawar GG, Jena HS, Kapur M. Palladium catalyzed, heteroatom-guided C–H functionalization in the synthesis of substituted isoquinolines and dihydroisoquinolines. Chem Commun (Camb) 2014; 50:7322-5. [DOI: 10.1039/c4cc03165b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Jafarpour F, Olia MBA, Hazrati H. Highly Regioselective α-Arylation of CoumarinsviaPalladium-Catalyzed CH Activation/Desulfitative Coupling. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300707] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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47
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Pawar GG, Singh G, Tiwari VK, Kapur M. Dehydrogenative Heck Reaction (Fujiwara-Moritani Reaction) of Unactivated Olefins with Simple Dihydropyrans under Aprotic Conditions. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300370] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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48
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Tiwari VK, Pawar GG, Das R, Adhikary A, Kapur M. Heteroatom-Guided, Palladium-Catalyzed Regioselective C–H Functionalization in the Synthesis of 3-Arylquinolines. Org Lett 2013; 15:3310-3. [DOI: 10.1021/ol401349a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Virendra Kumar Tiwari
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Raisen Road, Bhopal 462023, India
| | - Govind Goroba Pawar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Raisen Road, Bhopal 462023, India
| | - Riki Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Raisen Road, Bhopal 462023, India
| | - Amit Adhikary
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Raisen Road, Bhopal 462023, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Raisen Road, Bhopal 462023, India
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49
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Yu YY, Bi L, Georg GI. Palladium-catalyzed direct C-H arylation of cyclic enaminones with aryl iodides. J Org Chem 2013; 78:6163-9. [PMID: 23750615 DOI: 10.1021/jo400830t] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A ligand-free method for the Pd-catalyzed direct arylation of cyclic enaminones using aryl iodides was developed. This method can be applied to a wide range of cyclic enaminones and aryl iodides with excellent C5-regioselectivity. Using widely available aryl iodides, the generality of this transformation provides easy access to a variety of 3-arylpiperidine structural motifs.
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Affiliation(s)
- Yi-Yun Yu
- Department of Chemistry, the Institute for Therapeutics Discovery and Development, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414, United States
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50
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Xu YH, Wang M, Lu P, Loh TP. Palladium-catalyzed alkenyl C–H bond sulfonylation reaction using organosulfonyl chlorides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.071] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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