1
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Wakabayashi R, Wang S, Kurogi T, Yorimitsu H. Arylation of benzazoles at the 4 positions by activation of their 2-methylsulfinyl groups. Chem Commun (Camb) 2024; 60:6166-6169. [PMID: 38804671 DOI: 10.1039/d4cc01918k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Treatment of 2-methylsulfinylbenzazoles with triflic anhydride in the presence of phenols yields the corresponding 4-(p-hydroxyphenyl)-2-methylsulfanylbenzazoles. This regioselective dehydrative C-H/C-H coupling arylation represents a rare example of functionalizations on the benzene rings of benzo-fused azoles.
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Affiliation(s)
- Ryota Wakabayashi
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Shuo Wang
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Takashi Kurogi
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | - Hideki Yorimitsu
- Department of Chemistry Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
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2
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Fan Z, Chen X, Tanaka K, Park HS, Lam NYS, Wong JJ, Houk KN, Yu JQ. Molecular editing of aza-arene C-H bonds by distance, geometry and chirality. Nature 2022; 610:87-93. [PMID: 35944562 PMCID: PMC10292866 DOI: 10.1038/s41586-022-05175-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 08/02/2022] [Indexed: 11/09/2022]
Abstract
Direct molecular editing of heteroarene carbon-hydrogen (C-H) bonds through consecutive selective C-H functionalization has the potential to grant rapid access into diverse chemical spaces, which is a valuable but often challenging venture to achieve in medicinal chemistry1. In contrast to electronically biased heterocyclic C-H bonds2-9, remote benzocyclic C-H bonds on bicyclic aza-arenes are especially difficult to differentiate because of the lack of intrinsic steric/electronic biases10-12. Here we report two conceptually distinct directing templates that enable the modular differentiation and functionalization of adjacent remote (C6 versus C7) and positionally similar (C3 versus C7) positions on bicyclic aza-arenes through careful modulation of distance, geometry and previously unconsidered chirality in template design. This strategy enables direct C-H olefination, alkynylation and allylation at adjacent C6 and C7 positions of quinolines in the presence of a competing C3 position that is spatially similar to C7. Notably, such site-selective, iterative and late-stage C-H editing of quinoline-containing pharmacophores can be performed in a modular fashion in different orders to suit bespoke synthetic applications. This Article, in combination with previously reported complementary methods, now fully establishes a unified late-stage 'molecular editing' strategy to directly modify bicyclic aza-arenes at any given site in different orders.
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Affiliation(s)
- Zhoulong Fan
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Keita Tanaka
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Han Seul Park
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Nelson Y S Lam
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA
| | - Jonathan J Wong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA.
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, USA.
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3
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Sun H, Cheng Y, Teng H, Chen X, Niu X, Yang H, Cui YM, Xu LW, Yang L. 3-Alkyl-2-pyridyl Directing Group-Enabled C2 Selective C-H Silylation of Indoles and Pyrroles via an Iridium Catalyst. J Org Chem 2022; 87:13346-13351. [PMID: 36129738 DOI: 10.1021/acs.joc.2c01385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An iridium-catalyzed, directing group-enabled site selective intra- and intermolecular silylation of indoles and pyrroles with hydrosilanes has been developed under ligand-free conditions. Fine-tuning of the removable 3-alkyl-2-pyridyl directing group was found to be crucial for achieving high yields for C2-silylated indole and pyrrole products. Moreover, the scalability was demonstrated, and further transformations of the silylation products were achieved.
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Affiliation(s)
- Hui Sun
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yi Cheng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Houyun Teng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaoqi Chen
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaokang Niu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Hao Yang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yu-Ming Cui
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Li-Wen Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Lei Yang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
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4
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de las Heras L, Esteruelas MA, Oliván M, Oñate E. Rhodium-Promoted C-H Bond Activation of Quinoline, Methylquinolines, and Related Mono-Substituted Quinolines. Organometallics 2022; 41:2317-2326. [PMID: 36866062 PMCID: PMC9969481 DOI: 10.1021/acs.organomet.2c00270] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Indexed: 11/28/2022]
Abstract
The C-H bond activation of methylquinolines, quinoline, 3-methoxyquinoline, and 3-(trifluoromethyl)quinoline promoted by the square-planar rhodium(I) complex RhH{κ3-P,O,P-[xant(PiPr2)2]} [1; xant(PiPr2)2 = 9,9-dimethyl-4,5-bis(diisopropylphosphino)xanthene] has been systematically studied. Results reveal that the activation of the heteroring is preferred over the activation of the carbocycle, and the activated position depends upon the position of the substituent in the substrate. Thus, 3-, 4-, and 5-methylquinoline reacts with 1 to quantitatively form square-planar rhodium(I)-(2-quinolinyl) derivatives, whereas 2-, 6-, and 7-methylquinoline quantitatively leads to rhodium(I)-(4-quinolinyl) species. By contrast, quinoline and 8-methylquinoline afford mixtures of the respective rhodium(I)-(2-quinolinyl) and -(4-quinolinyl) complexes. 3-Methoxyquinoline displays the same behavior as that of 3-methylquinoline, while 3-(trifluoromethyl)quinoline yields a mixture of rhodium(I)-(2-quinolinyl), -(4-quinolinyl), -(6-quinolinyl), and -(7-quinolinyl) isomers.
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5
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Zhong RL, Suzuki K, Yamashita M, Sakaki S. Theoretical Insight into Catalysis of the Aluminabenzene–Iridium Complex for C(sp 3)–H Borylation of NEt 3: How to Control α- and β-Regioselectivities? ACS Catal 2022. [DOI: 10.1021/acscatal.1c05792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Rong-Lin Zhong
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, College of Chemistry, Jilin University, Changchun 130023, P. R. China
| | - Katsunori Suzuki
- Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, Daigakudori 1-1-1, Sanyo-Onoda, Yamaguchi 756-0884, Japan
| | - Makoto Yamashita
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Shigeyoshi Sakaki
- Element Strategy Initiative for Catalysts and Batteries, Kyoto University, Goryo-Ohara 1-30,
Nishikyo-ku, Kyoto 615-8245, Japan
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6
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Mahamudul Hassan MM, Mondal B, Singh S, Haldar C, Chaturvedi J, Bisht R, Sunoj RB, Chattopadhyay B. Ir-Catalyzed Ligand-Free Directed C–H Borylation of Arenes and Pharmaceuticals: Detailed Mechanistic Understanding. J Org Chem 2022; 87:4360-4375. [DOI: 10.1021/acs.joc.2c00046] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mirja Md Mahamudul Hassan
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Biplab Mondal
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Sukriti Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Chabush Haldar
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Jagriti Chaturvedi
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Ranjana Bisht
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Raghavan B. Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Buddhadeb Chattopadhyay
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
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7
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Xu J, Cai H, Shen J, Shen C, Wu J, Zhang P, Liu X. Photo-Induced Cross-Dehydrogenative Alkylation of Heteroarenes with Alkanes under Aerobic Conditions. J Org Chem 2021; 86:17816-17832. [PMID: 34875167 DOI: 10.1021/acs.joc.1c02125] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a Minisci-type cross-dehydrogenative alkylation in an aerobic atmosphere using abundant and inexpensive cerium chloride as a photocatalyst and air as an oxidant. This photoreaction exhibits excellent tolerance to functional groups and is suitable for both heteroarene and alkane substrates under mild conditions, generating the corresponding products in moderate-to-good yields. Our method provides an alternative approach for the late-stage functionalization of valuable substrates.
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Affiliation(s)
- Jun Xu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou 215123, China
| | - Heng Cai
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiabin Shen
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Chao Shen
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jie Wu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou 215123, China
| | - Pengfei Zhang
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou 215123, China
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8
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Murai M. Silylative Cyclization with Dehydrogenation Leading to Benzosilole‐Fused Azulenes Showing Unique Stimuli‐Responsive Fluorescence. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Masahito Murai
- Department of Chemistry Graduate School of Science Nagoya University Furo, Chikusa 464-8602 Nagoya Japan
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9
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Sinha SK, Guin S, Maiti S, Biswas JP, Porey S, Maiti D. Toolbox for Distal C-H Bond Functionalizations in Organic Molecules. Chem Rev 2021; 122:5682-5841. [PMID: 34662117 DOI: 10.1021/acs.chemrev.1c00220] [Citation(s) in RCA: 175] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transition metal catalyzed C-H activation has developed a contemporary approach to the omnipresent area of retrosynthetic disconnection. Scientific researchers have been tempted to take the help of this methodology to plan their synthetic discourses. This paradigm shift has helped in the development of industrial units as well, making the synthesis of natural products and pharmaceutical drugs step-economical. In the vast zone of C-H bond activation, the functionalization of proximal C-H bonds has gained utmost popularity. Unlike the activation of proximal C-H bonds, the distal C-H functionalization is more strenuous and requires distinctly specialized techniques. In this review, we have compiled various methods adopted to functionalize distal C-H bonds, mechanistic insights within each of these procedures, and the scope of the methodology. With this review, we give a complete overview of the expeditious progress the distal C-H activation has made in the field of synthetic organic chemistry while also highlighting its pitfalls, thus leaving the field open for further synthetic modifications.
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Affiliation(s)
- Soumya Kumar Sinha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sudip Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Jyoti Prasad Biswas
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sandip Porey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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10
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Prabagar B, Yang Y, Shi Z. Site-selective C-H functionalization to access the arene backbone of indoles and quinolines. Chem Soc Rev 2021; 50:11249-11269. [PMID: 34486584 DOI: 10.1039/d0cs00334d] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The site-selective C-H bond functionalization of heteroarenes can eventually provide chemists with great techniques for editing and building complex molecular scaffolds. During the past decade, benzo-fused N-heterocycles such as indoles and quinolines have been among the most widely investigated organic templates. Early developments have led to site-selective C-H bond functionalization on the pyrrole and pyridine cores of indoles and quinolines; however, C-H functionalization on the benzenoid ring has remained a great challenge in catalysis. In this review, we elaborate on recent developments in the highly challenging functionalization of C-H bonds on the less-reactive benzenoid core of indoles and quinolines. These findings are mainly described as selective directing group assisted strategies, remote C-H functionalization techniques and their reaction mechanisms. The underlying principle in each strategy is elucidated, which aims to facilitate the design of a more advanced structure of heterocycles based on bioactive molecules, synthetic drugs, and material aspects. Moreover, the challenges and perspectives for catalytic C-H functionalization to access the arene backbone of indoles and quinolines are also proposed in the conclusion section.
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Affiliation(s)
- B Prabagar
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Youqing Yang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
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11
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Yan ZB, Peng M, Chen QL, Lu K, Tu YQ, Dai KL, Zhang FM, Zhang XM. An effective and versatile strategy for the synthesis of structurally diverse heteroarylsilanes via Ir(iii)-catalyzed C-H silylation. Chem Sci 2021; 12:9748-9753. [PMID: 34349947 PMCID: PMC8293992 DOI: 10.1039/d1sc02344f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 06/08/2021] [Indexed: 12/19/2022] Open
Abstract
A versatile silylation of heteroaryl C–H bonds is accomplished under the catalysis of a well-defined spirocyclic NHC Ir(iii) complex (SNIr), generating a variety of heteroarylsilanes. A significant advantage of this catalytic system is that multiple types of intermolecular C–H silylation can be achieved using one catalytic system at α, β, γ, or δ positions of heteroatoms with excellent regioselectivities. Mechanistic experiments and DFT calculations indicate that the polycyclic ligand of SNIr can form an isolable cyclometalated intermediate, which leaves a phenyl dentate free and provides a hemi-open space for activating substrates. In general, favorable silylations occur at γ or δ positions of chelating heteroatoms, forming 5- or 6-membered C–Ir–N cyclic intermediates. If such an activation mode is prohibited sterically, silylations would take place at the α or β positions. The mechanistic studies would be helpful for further explaining the reactivity of the SNIr system. A versatile silylation of heteroaryl C–H bonds is accomplished under the catalysis of a well-defined spirocyclic NHC Ir(iii) complex (SNIr), generating a variety of heteroarylsilanes.![]()
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Affiliation(s)
- Zhi-Bo Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Meng Peng
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Qi-Long Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Ka Lu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China .,School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Kun-Long Dai
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University Lanzhou 730000 P. R. China
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12
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Zhang J, Liu S, Zhang T, Liu T, Lan Y. Oxidation of Pd(II) with disilane in a palladium-catalyzed disilylation of aryl halides: a theoretical view. Dalton Trans 2021; 50:7656-7666. [PMID: 33973588 DOI: 10.1039/d1dt00399b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Density functional theory (DFT) calculation has been used to reveal the mechanism of the Pd-catalyzed disilylation reaction of aryl halides. The DFT calculations indicate that the reaction starts with the oxidative addition of the C-I bond to the Pd(0) catalyst. Concerted metalation-deprotonation (CMD) can then generate a five-membered palladacycle. Insertion of Pd(ii) into the Si-Si bond in disilane followed by two sequential steps of reductive eliminations yields the disilylation product and regenerates the Pd(0) catalyst. According to the NPA charge analysis along the reaction coordinates, the formal oxidative addition of the Si-Si bond to palladium could be considered as the insertion of palladium into the Si-Si bond. However, the conventional oxidative addition of the C-I bond to palladium is exactly an oxidation process with the electron transfer from the palladium atom to the C-I bond. Therefore, electron rich Pd(0) is beneficial for the oxidation process, and Pd(ii) prone to acquire electrons is beneficial for the insertion process.
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Affiliation(s)
- Jing Zhang
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, P. R. China.
| | - Shihan Liu
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P. R. China.
| | - Tao Zhang
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou, Henan 450001, China
| | - Tao Liu
- Department of Chemistry and Chemical Engineering, Jining University, Qufu 273155, P. R. China.
| | - Yu Lan
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 400030, P. R. China. and Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou, Henan 450001, China
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13
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Buil ML, Collado A, Esteruelas MA, Gómez-Gallego M, Izquierdo S, Nicasio AI, Oñate E, Sierra MA. Preparation and Degradation of Rhodium and Iridium Diolefin Catalysts for the Acceptorless and Base-Free Dehydrogenation of Secondary Alcohols. Organometallics 2021; 40:989-1003. [PMID: 35692372 PMCID: PMC9180741 DOI: 10.1021/acs.organomet.1c00068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Indexed: 01/21/2023]
Abstract
![]()
Rhodium
and iridium diolefin catalysts for the acceptorless and
base-free dehydrogenation of secondary alcohols have been prepared,
and their degradation has been investigated, during the study of the
reactivity of the dimers [M(μ-Cl)(η4-C8H12)]2 (M = Rh (1), Ir
(2)) and [M(μ-OH)(η4-C8H12)]2 (M = Rh (3), Ir (4)) with 1,3-bis(6′-methyl-2′-pyridylimino)isoindoline
(HBMePHI). Complex 1 reacts with HBMePHI, in dichloromethane,
to afford equilibrium mixtures of 1, the mononuclear
derivative RhCl(η4-C8H12){κ1-Npy-(HBMePHI)} (5), and the binuclear species [RhCl(η4-C8H12)]2{μ-Npy,Npy-(HBMePHI)} (6). Under
the same conditions, complex 2 affords the iridium counterparts
IrCl(η4-C8H12){κ1-Npy-(HBMePHI)} (7) and [IrCl(η4-C8H12)]2{μ-Npy,Npy-(HBMePHI)} (8). In contrast to chloride,
one of the hydroxide groups of 3 and 4 promotes
the deprotonation of HBMePHI to give [M(η4-C8H12)]2(μ-OH){μ-Npy,Niso-(BMePHI)} (M = Rh
(9), Ir (10)), which are efficient precatalysts
for the acceptorless and base-free dehydrogenation of secondary alcohols.
In the presence of KOtBu, the [BMePHI]− ligand undergoes three different degradations: alcoholysis
of an exocyclic isoindoline-N double bond, alcoholysis of a pyridyl-N
bond, and opening of the five-membered ring of the isoindoline core.
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Affiliation(s)
- María L. Buil
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Alba Collado
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Mar Gómez-Gallego
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Susana Izquierdo
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Antonio I. Nicasio
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Miguel A. Sierra
- Departamento de Química Orgánica I, Facultad de CC. Químicas, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad Complutense de Madrid, 28040 Madrid, Spain
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14
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Wright JS, Scott PJH, Steel PG. Iridium-Catalysed C-H Borylation of Heteroarenes: Balancing Steric and Electronic Regiocontrol. Angew Chem Int Ed Engl 2021; 60:2796-2821. [PMID: 32202024 PMCID: PMC7894576 DOI: 10.1002/anie.202001520] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/09/2020] [Indexed: 12/19/2022]
Abstract
The iridium-catalysed borylation of aromatic C-H bonds has become the preferred method for the synthesis of aromatic organoboron compounds. The reaction is highly efficient, tolerant of a broad range of substituents and can be applied to both carbocyclic and heterocyclic substrates. The regioselectivity of C-H activation is dominated by steric considerations and there have been considerable efforts to develop more selective processes for less constrained substrates. However, most of these have focused on benzenoid-type substrates and in contrast, heteroarenes remain much desired but more challenging substrates with the position and/or nature of the heteroatom(s) significantly affecting reactivity and regioselectivity. This review will survey the borylation of heteroarenes, focusing on the influence of steric and electronic effects on regiochemical outcome and, by linking to current mechanistic understandings, will provide insights to what is currently possible and where further developments are required.
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Affiliation(s)
- Jay S. Wright
- Department of ChemistryUniversity of DurhamScience Laboratories, South Road DurhamDurhamDH1 3LEUK
- Department of RadiologyUniversity of MichiganAnn ArborMichiganUSA
| | | | - Patrick G. Steel
- Department of ChemistryUniversity of DurhamScience Laboratories, South Road DurhamDurhamDH1 3LEUK
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15
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Wang D, Chen X, Wong JJ, Jin L, Li M, Zhao Y, Houk KN, Shi Z. Phosphorus(III)-assisted regioselective C-H silylation of heteroarenes. Nat Commun 2021; 12:524. [PMID: 33483484 PMCID: PMC7822902 DOI: 10.1038/s41467-020-20531-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 11/24/2020] [Indexed: 01/19/2023] Open
Abstract
Heteroarenes containing carbon-silicon (C-Si) bonds are important building blocks that play an important role in the construction of natural products, pharmaceuticals, and organic materials. In this context, the C-H silylation of heteroarenes is a topic of intense interest. Indole C-H silylation can preferentially occur at the nucleophilic C3 and C2 position (pyrrole core), while accessing the C4-C7 positions (benzene core) of the indole remains highly challenging. Here, we show a general strategy for the regioselective C7-H silylation of indole derivatives. Mainly, the regioselectivity is determined by strong coordination of the palladium catalyst with phosphorus (III) directing group. Using this expedient synthetic strategy, the diverse C7-silylated indoles are synthesized effectively which exhibits the broad functional group compatibility. Moreover, this protocol also been extended to other heteroarenes such as carbazoles. The obtained silylated indoles have been employed in various transformations to enable the corresponding differently functionalized indole derivatives. Significantly, a cyclopalladated intermediate is successfully synthesized to test the hypothesis about the P(III)-directed C-H metalation event. A series of mechanistic experiments and density functional theory (M06-2X) calculations has shown the preferred pathway of this directed C-H silylation process.
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Affiliation(s)
- Dingyi Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jonathan J Wong
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA
| | - Liqun Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Mingjie Li
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.
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16
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Jiao J, Nie W, Song P, Li P. A new air-stable Si,S-chelating ligand for Ir-catalyzed directed ortho C-H borylation. Org Biomol Chem 2021; 19:355-359. [PMID: 33315038 DOI: 10.1039/d0ob02335c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new air-stable Si,S-chelating ligand has been developed and used in an iridium-catalyzed ortho C-H borylation reaction with a broad substrate scope. This study provides the first example of using a sulfur-containing ligand in the catalytic C-H borylation process. It provides a rapid, efficient, and economical method for the preparation of organoboron compounds.
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Affiliation(s)
- Jiao Jiao
- School of Chemistry, Xi'an Jiaotong University, Xi'an, China. and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an, China
| | - Wenzheng Nie
- School of Chemistry, Xi'an Jiaotong University, Xi'an, China.
| | - Peidong Song
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China.
| | - Pengfei Li
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China. and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an, China
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17
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Lin Q, Lin Z, Pan M, Zheng Q, Li H, Chen X, Darcel C, Dixneuf PH, Li B. Alkenes as hydrogen trappers to control the regio-selective ruthenium(ii) catalyzed ortho C–H silylation of amides and anilides. Org Chem Front 2021. [DOI: 10.1039/d0qo01031f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A convenient and practical pathway to versatile silylated amides and anilides is described via efficient and selective ruthenium(ii) catalyzed ortho C–H silylation with different alkenes as the hydrogen acceptors.
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Affiliation(s)
- Qiao Lin
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Zirui Lin
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Mingxing Pan
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Qiaojin Zheng
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Hui Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
| | - Christophe Darcel
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes)
- F-35000 Rennes
- France
| | - Pierre H. Dixneuf
- Univ. Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes)
- F-35000 Rennes
- France
| | - Bin Li
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- P.R. China
- Univ. Rennes
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18
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Wright JS, Scott PJH, Steel PG. Iridium‐katalysierte C‐H‐Borylierung von Heteroarenen: Eine Balance zwischen sterischer and elektronischer Regiokontrolle. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001520] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jay S. Wright
- Department of Chemistry University of Durham Science Laboratories, South Road Durham Durham DH1 3LE Großbritannien
- Department of Radiology University of Michigan Ann Arbor Michigan USA
| | - Peter J. H. Scott
- Department of Radiology University of Michigan Ann Arbor Michigan USA
| | - Patrick G. Steel
- Department of Chemistry University of Durham Science Laboratories, South Road Durham Durham DH1 3LE Großbritannien
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19
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Lou SJ, Zhang L, Luo Y, Nishiura M, Luo G, Luo Y, Hou Z. Regiodivergent C-H Alkylation of Quinolines with Alkenes by Half-Sandwich Rare-Earth Catalysts. J Am Chem Soc 2020; 142:18128-18137. [PMID: 32985182 DOI: 10.1021/jacs.0c08362] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The regiodivergent catalysis of C-H alkylation with alkenes is of great interest and importance but has remained hardly explored to date. We report herein the first regiodivergent C-H alkylation of quinolines with alkenes by half-sandwich rare-earth catalysts. The regiodivergence was achieved by fine-tuning the metal/ligand combination or steric and electronic properties of the catalysts. The use of the C5Me5-ligated scandium catalyst Sc-3 for the reaction of quinolines with styrenes and that of the C5Me4H-ligated yttrium catalyst Y-2 for the reaction with aliphatic olefins exclusively afforded the corresponding C8-H alkylation products, thus constituting the first example of direct C8-H alkylation of neutral quinolines. In contrast, the Sc-3-catalyzed reaction of 2-arylquinolines with aliphatic olefins and the Y-2-catalyzed reaction with styrenes selectively gave the 2-aryl o-C-H alkylation products. On the basis of the catalyst/substrate-controlled regiodivergence, the sequential regiospecific dialkylation of quinolines with two different alkenes has also been achieved. DFT studies revealed that the C-H activation of 2-phenylquinoline at both the C8 position and an ortho position of the 2-phenyl substituent was possible, and these two types of initially formed C-H activation products were interconvertible through the coordination and C-H activation of another molecule of quinoline. The regioselectivity for the C-H alkylation reactions was governed not only by the ease of the initial formation of the C-H activation products but also by the energy barriers for their interconversions, as well as by the energy barriers or steric and electronic influences in the subsequent alkene insertion processes. This work has not only constituted an efficient protocol for the selective synthesis of diversified quinoline derivatives but also offered unprecedented insights into the C-H activation and transformation of quinolines and may help in the design of more efficient, selective, or complementary catalysts.
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Affiliation(s)
- Shao-Jie Lou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Liang Zhang
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yong Luo
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Masayoshi Nishiura
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Gen Luo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, People's Republic of China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Zhaomin Hou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
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20
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Dhiman AK, Thakur A, Kumar R, Sharma U. Rhodium‐Catalyzed Selective C−H Bond Functionalization of Quinolines. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000341] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ankit K. Dhiman
- Chemical Technology Division and AcSIR CSIR-Institute of Himalayan Bioresource Technology Palampur India
| | - Ankita Thakur
- Chemical Technology Division and AcSIR CSIR-Institute of Himalayan Bioresource Technology Palampur India
| | - Rakesh Kumar
- Chemical Technology Division and AcSIR CSIR-Institute of Himalayan Bioresource Technology Palampur India
| | - Upendra Sharma
- Chemical Technology Division and AcSIR CSIR-Institute of Himalayan Bioresource Technology Palampur India
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21
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2-Aminobenzaldehyde, a common precursor to acridines and acridones endowed with bioactivities. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131435] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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22
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Prybil J, Wallace R, Warren A, Klingman J, Vaillant R, Hall MB, Yang X, Brennessel WW, Chin RM. Silylation of Pyridine, Picolines, and Quinoline with a Zinc Catalyst. ACS OMEGA 2020; 5:1528-1539. [PMID: 32010826 PMCID: PMC6990635 DOI: 10.1021/acsomega.9b03317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 12/30/2019] [Indexed: 06/10/2023]
Abstract
Zn(OTf)2 (OTf- = trifluoromethanesulfonate) catalyzes the silylation of pyridine, 3-picoline, and quinoline to afford the silylated products, where the silyl groups are meta to the nitrogen. The isolated yields of the products range from 41 to 26%. The 2- and 4-picolines yielded the silylmethylpyridines, where the CH3 groups were silylated instead of the ring. The pyridine silylation can occur via two separate pathways, involving either a 1,4- or a 1,2-hydrosilylation of pyridine as the first step. A byproduct of the pyridine silylation is a head-to-tail dimerization of N-silyl-1,4-dihydropyridine to form a diazaditwistane molecule.
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Affiliation(s)
- Joshua
W. Prybil
- Department
of Chemistry and Biochemistry, University
of Northern Iowa, Cedar
Falls, Iowa 50614-0423, United States
| | - Rodney Wallace
- Department
of Chemistry and Biochemistry, University
of Northern Iowa, Cedar
Falls, Iowa 50614-0423, United States
| | - Alexandra Warren
- Department
of Chemistry and Biochemistry, University
of Northern Iowa, Cedar
Falls, Iowa 50614-0423, United States
| | - Jordan Klingman
- Department
of Chemistry and Biochemistry, University
of Northern Iowa, Cedar
Falls, Iowa 50614-0423, United States
| | - Romane Vaillant
- École
nationale supérieure de chimie de Rennes, Sciences Chimiques
de Rennes, Rennes, Bretagne 35700, France
| | - Michael B. Hall
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Xin Yang
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - William W. Brennessel
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Robert M. Chin
- Department
of Chemistry and Biochemistry, University
of Northern Iowa, Cedar
Falls, Iowa 50614-0423, United States
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23
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Murai M, Nishinaka N, Enoki T, Takai K. Regioselective Sequential Silylation and Borylation of Aromatic Aldimines as a Strategy for Programming Synthesis of Multifunctionalized Benzene Derivatives. Org Lett 2020; 22:316-321. [PMID: 31850763 DOI: 10.1021/acs.orglett.9b04338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regioselective difunctionalization of two different C-H bonds in one pot using a three-component coupling reaction is described. The reaction order is important for controlling the reactivity and regioselectivity, and the first silylation promotes the second borylation. The introduced formyl, silyl, and boryl functional groups could be independently converted to other functional groups, and the substitution pattern for the resulting benzenes is difficult to access by conventional methods.
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Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan.,Department of Chemistry, Graduate School of Science , Nagoya University , Furo, Chikusa, Nagoya 464-8602 , Japan
| | - Naoki Nishinaka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
| | - Takahiro Enoki
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
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24
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Iridium-Catalyzed Silylation. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Kawabata K, Usui S, Takimiya K. Synthesis of Soluble Dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene (DNTT) Derivatives: One-Step Functionalization of 2-Bromo-DNTT. J Org Chem 2019; 85:195-206. [DOI: 10.1021/acs.joc.9b02585] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kohsuke Kawabata
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- Emergent Molecular Function Research Team, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
| | - Sayaka Usui
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kazuo Takimiya
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- Emergent Molecular Function Research Team, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
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26
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Mandal A, Dana S, Chowdhury D, Baidya M. Recent Advancements in Transition-Metal-Catalyzed One-Pot Twofold Unsymmetrical Difunctionalization of Arenes. Chem Asian J 2019; 14:4074-4086. [PMID: 31584753 DOI: 10.1002/asia.201901213] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/28/2019] [Indexed: 12/14/2022]
Abstract
Transition-metal-catalyzed direct C-H bond activation reactions have been embraced as a powerful synthetic tool to access diverse functionalized arenes. However, site-selective incorporation of multiple distinct functionalities in an arene has always been a formidable challenge. Recent efforts from the synthetic community have disclosed a few dynamic synthetic approaches to fabricate multifunctionalized arenes in one-pot using a single catalytic system. These reports manifested the immense potential of such approaches to expedite contemporary organic synthesis towards building molecular complexity. In this minireview, we have illustrated the recent progress in this area, highlighting the contribution from several synthetic chemists including our group.
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Affiliation(s)
- Anup Mandal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Suman Dana
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Deepan Chowdhury
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
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27
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Wang K, Li L, Hu T, Gao L, Song Z. One-Pot Twofold Unsymmetrical C-Si Bond 2,6-Bifunctionalization of Arenes via Sequential [1,4]-Csp 2 to O-Silyl Migration. J Org Chem 2019; 84:12583-12595. [PMID: 31499002 DOI: 10.1021/acs.joc.9b02014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Twofold unsymmetrical C-Si bond bifunctionalization of 2,6-di(trimethylsilyl) benzyl alcohols has been achieved in one pot via sequential [1,4]-Csp2 to O-silyl migration. The hydroxyl group functions as an "on-off-on" switch to control two successive silyl migrations, and 4,7-dimethyl-o-phenanthroline ligand favors cleavage of the endocyclic C-Si bond. Diverse Csp3/Csp3 or Csp2/Csp3 electrophiles can be installed at the 2- and 6-positions. This approach was used to chemoselectively functionalize the three C-Si bonds of 2,4,6-tri(trimethylsilyl) benzyl alcohol, transforming it into isochroman derivatives. The approach even works as a five-component reaction to construct complex symmetric structures.
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Affiliation(s)
- Kai Wang
- Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy , Sichuan University , Chengdu , 610041 China
| | - Linjie Li
- Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy , Sichuan University , Chengdu , 610041 China
| | - Tianbao Hu
- Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy , Sichuan University , Chengdu , 610041 China
| | - Lu Gao
- Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy , Sichuan University , Chengdu , 610041 China
| | - Zhenlei Song
- Sichuan Engineering Laboratory for Plant-Sourced Drug and Research Center for Drug Industrial Technology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy , Sichuan University , Chengdu , 610041 China.,State Key Laboratory of Elemento-organic Chemistry , Nankai University , Tianjin , 300071 China
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28
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Shishido R, Sasaki I, Seki T, Ishiyama T, Ito H. Direct Dimesitylborylation of Benzofuran Derivatives by an Iridium-Catalyzed C-H Activation with Silyldimesitylborane. Chemistry 2019; 25:12924-12928. [PMID: 31432548 DOI: 10.1002/chem.201903776] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Indexed: 12/23/2022]
Abstract
Direct dimesitylborylation of benzofuran derivatives by a C-H activation catalyzed by an iridium(I)/N-heterocyclic carbene (NHC) complex in the presence of Ph2 MeSi-BMes2 afforded the corresponding dimesitylborylation products in good to high yield with excellent regioselectivity. This method provides a straightforward route to donor-(π-spacer)-acceptor systems with intriguing solvatochromic luminescence properties.
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Affiliation(s)
- Ryosuke Shishido
- Division of Applied Chemistry, Graduate School of Engineering Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Ikuo Sasaki
- Department of Chemistry and Bioscience, Faculty of Science and Technology, Aoyama Gakuin University, 5-10-1, Fuchinobe, Chuo-ku, Sagamihara, 252-5258, Japan
| | - Tomohiro Seki
- Division of Applied Chemistry, Graduate School of Engineering Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICRD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
| | - Tatsuo Ishiyama
- Division of Applied Chemistry, Graduate School of Engineering Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICRD), Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo, 001-0021, Japan
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29
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Wang D, Zhao Y, Yuan C, Wen J, Zhao Y, Shi Z. Rhodium(II)‐Catalyzed Dehydrogenative Silylation of Biaryl‐Type Monophosphines with Hydrosilanes. Angew Chem Int Ed Engl 2019; 58:12529-12533. [DOI: 10.1002/anie.201906975] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/01/2019] [Indexed: 01/26/2023]
Affiliation(s)
- Dingyi Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Yunfei Zhao
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Chengkai Yuan
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Jian Wen
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Yue Zhao
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
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Ren Q, An S, Wang Y, Tong W. Density Functional Theory Study of the Mechanisms of Iron‐Catalyzed Regioselective Anti‐Markovnikov Addition of C‐H Bonds in Aromatic Ketones to Alkenes. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5183] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Qinghua Ren
- Department of ChemistryShanghai University 99 Shangda Road Shanghai 200444 China
| | - Shanshan An
- Department of ChemistryShanghai University 99 Shangda Road Shanghai 200444 China
| | - Yuling Wang
- Department of ChemistryShanghai University 99 Shangda Road Shanghai 200444 China
| | - Weiqi Tong
- Department of ChemistryShanghai University 99 Shangda Road Shanghai 200444 China
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31
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Wang D, Zhao Y, Yuan C, Wen J, Zhao Y, Shi Z. Rhodium(II)‐Catalyzed Dehydrogenative Silylation of Biaryl‐Type Monophosphines with Hydrosilanes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dingyi Wang
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Yunfei Zhao
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Chengkai Yuan
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Jian Wen
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Yue Zhao
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210093 China
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Murai M, Nishinaka N, Kimura M, Takai K. Regioselective Functionalization of 9,9-Dimethyl-9-silafluorenes by Borylation, Bromination, and Nitration. J Org Chem 2019; 84:5667-5676. [PMID: 30938531 DOI: 10.1021/acs.joc.9b00598] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Despite the utility of 9-silafluorenes as functional materials and as building blocks, methods for efficient functionalization of their backbone are rare, probably because of the presence of easily cleavable C-Si bonds. Although controlling the regioselectivity of iridium-catalyzed direct borylation of C-H bonds is difficult, we found that bromination and nitration of 2-methoxy-9-silafluorene under mild conditions occurred predominantly at the electron-rich position. The resulting product having methoxy and bromo groups can be utilized as a building block for the synthesis of unsymmetrically substituted 9-silafluorene-containing π-conjugated molecules.
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Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
| | - Naoki Nishinaka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
| | - Mizuki Kimura
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushimanaka , Kita-ku, Okayama 700-8530 , Japan
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33
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Wang Z, Wang X, Nishihara Y. Nickel-catalysed decarbonylative borylation of aroyl fluorides. Chem Commun (Camb) 2018; 54:13969-13972. [DOI: 10.1039/c8cc08504h] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A transformation of aroyl fluorides with diboron via nickel-catalysed carbon–fluorine bond cleavage and a sequential decarbonylation, which provides an efficient protocol to functionalize arylboronates, has been reported.
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Affiliation(s)
- Zhenhua Wang
- Graduate School of Natural Science and Technology
- Okayama University
- Kita-ku
- Japan
| | - Xiu Wang
- Graduate School of Natural Science and Technology
- Okayama University
- Kita-ku
- Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science
- Okayama University
- Kita-ku
- Japan
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