1
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Dong Y, Hu F, Wu H, Guo FW, Wang L, Du FY, Li SS. Controllable Synthesis of N-Heterocycles via Hydride Transfer Strategy-Enabled Formal [5 + 1] and [5 + 2] Cyclizations. Org Lett 2024; 26:332-337. [PMID: 38153999 DOI: 10.1021/acs.orglett.3c03986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The Brønsted acid-controlled switchable synthesis of indoline-fused tetrahydroquinolines and indole-fused benzazepines was developed through hydride transfer-enabled formal [5 + 1] and [5 + 2] cyclization reactions from indoles and N-alkyl o-aminobenzoketones. Indoline, furanone, and tetrahydroquinoline hybridized pentacyclic products were unprecedentedly accessed via a cascade condensation/hydride transfer/dearomatization-cyclization/deethylation/nucleophilic addition process. In addition, the undeveloped hydride transfer-involved [5 + 2] cyclizations were also realized for direct construction of indole-fused benzazepines.
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Affiliation(s)
- Ying Dong
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Huixin Wu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Feng-Wei Guo
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Feng-Yu Du
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao 266109, P. R. China
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2
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Pramanik S, Saha P, Ghosh P, Mukhopadhyay C. Substrate Switchable Pathway for Selective Construction of Bridged Dibenzo[b,f][1,5]diazocines and Bridged Spiromethanodibenzo[ b, e]azepines. ACS OMEGA 2023; 8:20579-20588. [PMID: 37323403 PMCID: PMC10268268 DOI: 10.1021/acsomega.3c01046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/17/2023] [Indexed: 06/17/2023]
Abstract
An operationally simple method for the synthesis of bridged dibenzo[b,f][1,5]diazocines and bridged spiromethanodibenzo[b,e]azepines exhibiting bridged eight-membered and seven-membered molecular architecture is reported. This unique approach is based on substrate selective mechanistic pathway, including an unprecendented aerial oxidation-driven mechanism for the synthesis of bridged spiromethanodibenzo[b,e]azepines. The reaction is highly atom economic, and in addition, it allows the construction of two rings and four bonds in a single operation under metal-free condition. The easy availability of β enaminone and ortho phathalaldehyde as starting materials and the simple operation make this approach suitable for the preparation of important dibenzo[b,f][1,5]diazocine and spiromethanodibenzo[b,e]azepine cores.
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Affiliation(s)
- Sayan Pramanik
- Department
of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
| | - Pinaki Saha
- Department
of Chemistry, R. K. Mission Residential
College, Narendrapur, Kolkata 700103, India
| | - Prasanta Ghosh
- Department
of Chemistry, R. K. Mission Residential
College, Narendrapur, Kolkata 700103, India
| | - Chhanda Mukhopadhyay
- Department
of Chemistry, University of Calcutta, 92 APC Road, Kolkata 700009, India
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3
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Zhuang D, Jiang S, Wang Y, Wang X, Shen S, Yan R. I 2-Mediated [6 + 1] Annulation of Alkynes with MsONH 3OTf: Direct Synthesis of Benzo[ b]azepines. Org Lett 2023; 25:3007-3012. [PMID: 37083284 DOI: 10.1021/acs.orglett.3c00790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The synthesis of benzo[b]azepines using protonated aminating reagent (MsONH3OTf) and alkynes through I2-mediated [6 + 1] annulation reaction has been developed. This protocol features excellent functional group tolerance and mild reaction conditions and affords the benzo[b]azepines in moderate to good yields under metal-free reaction conditions.
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Affiliation(s)
- Daijiao Zhuang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, China
| | - Shixuan Jiang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, China
| | - Youzhi Wang
- Chengdu Guibao Science and Technology Co., Ltd, Chengdu, 610041 Sichuan, China
| | - Xiajun Wang
- Chengdu Guibao Science and Technology Co., Ltd, Chengdu, 610041 Sichuan, China
| | - Siwei Shen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 Gansu, China
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4
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Zamani Hargalani F, Shafaei F, Khandan S, Rostami-Charati F. Green Synthesis and Biological Activity Investigation of New Pyrimidotriazinoazepines. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2174995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Fariba Zamani Hargalani
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Faezeh Shafaei
- Department of Chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Samira Khandan
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Faramarz Rostami-Charati
- Research Center for Conservation of Culture Relicst (RCCCR), Research Institute of Cultural Heritage & Tourism, Tehran, Iran
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5
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Aghaei-Meybodi Z, Ghambarian M, Khandan Barani K, Sheikholeslami-Farahani F. Green Synthesis and Study of Biological Activity of New Benzopyrimidoazepines: Reduction of Organic Pollutants Using Synthesized Fe 3O 4/TiO 2/CuO@MWCNTs MNCs. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2118328] [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]
Affiliation(s)
- Zahra Aghaei-Meybodi
- Department of Chemistry, Faculty of Science, East Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Mehdi Ghambarian
- Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemical Institute, Tehran, Iran
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6
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Soleimani-Amiri S, Mohammadi M, Faal Hamedani N, Dehbandi B. An Efficient Synthesis and Study of Biological Activity of New Pyrimidoazepines Using Ag/Fe 3O 4/TiO 2/CuO@MWCNTs Magnetic Nanocomposites: A Combined Experimental and Theoretical Investigation. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2112709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
| | - Marziyeh Mohammadi
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | | | - Behnam Dehbandi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
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7
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Zamani Hargalani F, Shafaei F. Green Synthesis and Antioxidant Activity Investigation of New Thiazinotriazines: Reduction of Organic Pollutant Using Fe 3O 4/TiO 2/CuO@MWCNTs MNCs. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2099913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Fariba Zamani Hargalani
- Department of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Faezeh Shafaei
- Department of Chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran
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8
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Sheikholeslami-Farahani F, Mohammadi M, Ghambarian M, Hossaini Z. Green Synthesis and Biological Activity Investigation of New Thiazinotriazines: A Combined Experimental and Theoretical Investigation. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2078378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Marziyeh Mohammadi
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Mehdi Ghambarian
- Gas Conversion Department, Faculty of Petrochemicals, Iran Polymer and Petrochemical Institute, Tehran, Iran
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9
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Kohestani T, Sayyed-Alangi SZ, Hossaini Z, Baei MT. Production of Pyrimidobenzazepine Derivatives and Reduction of Organic Pollutant Using Ag/Fe 3O 4/TiO 2/CuO@MWCNTs MNCs. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2069134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Tayyebeh Kohestani
- Department of Chemistry, Azadshahr Branch, Islamic Azad University, Azadshahr, Iran
| | | | | | - Mohammad Taghi Baei
- Department of Chemistry, Azadshahr Branch, Islamic Azad University, Azadshahr, Iran
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10
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Kusaka S, Ohmura T, Suginome M. Iridium-Catalyzed Enantioselective Intramolecular Cross-Dehydrogenative Coupling of Alkyl Aryl Ethers Giving Enantioenriched 2,3-Dihydrobenzofurans. CHEM LETT 2022. [DOI: 10.1246/cl.220129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Satoshi Kusaka
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Toshimichi Ohmura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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11
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Wang L, Lv L, Li Z. Concomitant Functionalization of Two Different Ketones by Merging Brønsted Acid Catalysis and Radical Relay Coupling. Org Chem Front 2022. [DOI: 10.1039/d1qo01787j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In previous literature, incorporation of functional groups at the α-position of unactivated carbonyl compounds was mainly restricted to one kind of corresponding precursors. Herein, we report the concomitant functionalization of...
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12
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Shen J, Jiang X, Wu H, Xu J, Zhu Q, Zhang P. Copper-catalyzed selective oxidation of hydrazones through C(sp 3)-H functionalization. Org Biomol Chem 2021; 19:8917-8923. [PMID: 34617555 DOI: 10.1039/d1ob01563j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A simple and mild protocol for copper-catalyzed oxidation of hydrazones at the α-position has been reported. Various substrates are compatible, providing the corresponding products in moderate to good yields. This strategy provides an efficient and convenient solution for the synthesis of carbonyl hydrazone. A free radical pathway mechanism is suggested for the transformation.
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Affiliation(s)
- Jiabin Shen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Xiaoying Jiang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China. .,College of Chemistry and Chemical Engineering, Central south University, Changsha, 410083, P.R. China
| | - Haifeng Wu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Jun Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
| | - Qing Zhu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Pengfei Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, People's Republic of China.
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13
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Shen XQ, Yan XW, Zhang XG. A palladium-catalyzed ring-expansion reaction of cyclobutanols with 2-haloanilines leading to benzazepines and quinolines. Chem Commun (Camb) 2021; 57:10234-10237. [PMID: 34528044 DOI: 10.1039/d1cc04395a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general synthesis of 2-aryl benzazepines has been developed through palladium-catalyzed ring-expansion reactions of cyclobutanols with 2-haloanilines; the further oxidative rearrangement reaction of benzazepines provided an efficient synthesis of 2-acyl quinolines. These transformations feature the efficient construction of six- and seven-membered N-containing heterocycles from easily obtained materials with excellent functional group tolerance.
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Affiliation(s)
- Xiao-Qin Shen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Xiao-Wei Yan
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China. .,Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
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14
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An Z, Ren Y, Liu Y, Yan R. I 2 -Promoted Intramolecular Oxidative Cyclization of Butenyl Anilines: A Facile Route to Benzo[b]azepines. Chem Asian J 2021; 16:2614-2617. [PMID: 34342932 DOI: 10.1002/asia.202100710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/11/2021] [Indexed: 12/16/2022]
Abstract
A metal-free approach for the synthesis of seven-membered N-heterocycles has been developed by the I2 -promoted intramolecular cross-coupling/annulation of butenyl anilines. This cyclization reaction involves C-H activation and C-C bond formation and exhibits good functional group tolerance. A series of benzo[b]azepine derivatives are obtained in moderate to good yields.
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Affiliation(s)
- Zhenyu An
- State Key Laboratory of Applied Organic Chemistry, Key laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yi Ren
- State Key Laboratory of Applied Organic Chemistry, Key laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yafeng Liu
- Chemical Science and Engineering College, North Minzu University, Yinchuan, 750000, P. R. China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry, Key laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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15
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Reamtong O, Lapmanee S, Tummatorn J, Palavong N, Thongsornkleeb C, Ruchirawat S. Synthesis of Benzoazepine Derivatives via Azide Rearrangement and Evaluation of Their Antianxiety Activities. ACS Med Chem Lett 2021; 12:1449-1458. [PMID: 34531953 DOI: 10.1021/acsmedchemlett.1c00275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/13/2021] [Indexed: 12/23/2022] Open
Abstract
A new synthetic method for the construction of benzoazepine analogues has been developed employing ortho-arylmethylbenzyl azide derivatives as precursors using an azide rearrangement reaction. In this work, 14 benzoazepine compounds were successfully synthesized in moderate to excellent yields. All synthetic benzoazepines were evaluated for their cytotoxicity against normal human kidney cell line (HEK cell). The results showed that compound 18c had the lowest cytotoxicity (IC50 = 65.68 μM) among tested compounds, which was comparable with the antianxiety drug diazepam (IC50 = 87.90 μM). Based on the cytotoxicity results, five benzoazepine analogues (compounds 18c, 18h, 18j, 18n, and 18p) were selected to determine the antianxiety effect on stressed rats using elevated plus maze (EPM) and open field test (OFT) methods. Interestingly, compound 18c showed better anxiolytic activity than diazepam without a sedative effect by showing superior hyperlocomotor activity. Therefore, this discovery could pave the way for drug development to treat patients with anxiety disorder.
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Affiliation(s)
- Onrapak Reamtong
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Sarawut Lapmanee
- Preclinical Department, Faculty of Medicine, Siam University, Bangkok 10160, Thailand
| | - Jumreang Tummatorn
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 906 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Nitwaree Palavong
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 906 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Charnsak Thongsornkleeb
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 906 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
| | - Somsak Ruchirawat
- Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology, CHE, Ministry of Education, 906 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
- Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Laksi, Bangkok 10210, Thailand
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16
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Zhang ZQ, Xu YH, Dai JC, Li Y, Sheng J, Wang XS. Copper-Catalyzed Trifluoromethylation/Cyclization of Alkynes for Synthesis of Dioxodibenzothiazepines. Org Lett 2021; 23:2194-2198. [PMID: 33635668 DOI: 10.1021/acs.orglett.1c00344] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A facile and efficient approach for the synthesis of the CF3-containing dioxodibenzothiazepines has been developed via copper-catalyzed trifluoromethylation/cyclization of alkynes utilizing a radical relay strategy. This method has demonstrated low catalyst loading, high regiocontrol, and broad scope under mild conditions. Good compatibility for the N-protecting group, gram-scale experiment, and further derivation of product prove the versatility of this transformation.
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Affiliation(s)
- Zi-Qi Zhang
- 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
| | - Yi-Hao 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
| | - Jing-Cheng Dai
- 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
| | - Yan Li
- 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
| | - Jie Sheng
- 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
| | - Xi-Sheng Wang
- 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
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17
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Jin RX, Dai JC, Li Y, Wang XS. Copper-Catalyzed Intramolecular Amination of C(sp 3)-H Bond of Secondary Amines to Access Azacycles. Org Lett 2021; 23:421-426. [PMID: 33395308 DOI: 10.1021/acs.orglett.0c03934] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The cross-coupling of C-N bond directly from inert C-H bonds is an ideal approach to synthesize saturated azacycles due to its high efficiency and atom economy. In this article, a copper-catalyzed intramolecular amination via the cross coupling of C(sp3)-H and N-H bonds of secondary amine has been reported, which exhibit excellent chemo- and regioselectivity, extensive substrate scope, and functional group tolerance in good to excellent yield, offering an efficient pathway to build nitrogen-containing heterocycle skeletons.
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Affiliation(s)
- Ruo-Xing Jin
- 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
| | - Jing-Cheng Dai
- 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
| | - Yan Li
- 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
| | - Xi-Sheng Wang
- 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
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18
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Yang Y, Gao W, Wang Y, Wang X, Cao F, Shi T, Wang Z. Recent Advances in Copper Promoted Inert C(sp3)–H Functionalization. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04618] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuhang Yang
- School of Pharmacy, Lanzhou University, West Donggang Road No. 199, Lanzhou 730000, Gansu, People’s Republic of China
| | - Weiwei Gao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, People’s Republic of China
| | - Yongqiang Wang
- School of Pharmacy, Lanzhou University, West Donggang Road No. 199, Lanzhou 730000, Gansu, People’s Republic of China
| | - Xiaodong Wang
- School of Pharmacy, Lanzhou University, West Donggang Road No. 199, Lanzhou 730000, Gansu, People’s Republic of China
| | - Fei Cao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, People’s Republic of China
| | - Tao Shi
- School of Pharmacy, Lanzhou University, West Donggang Road No. 199, Lanzhou 730000, Gansu, People’s Republic of China
| | - Zhen Wang
- School of Pharmacy, Lanzhou University, West Donggang Road No. 199, Lanzhou 730000, Gansu, People’s Republic of China
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, People’s Republic of China
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19
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Velasco‐Rubio Á, Varela JA, Saá C. Recent Advances in Transition‐Metal‐Catalyzed Oxidative Annulations to Benzazepines and Benzodiazepines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000808] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Álvaro Velasco‐Rubio
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Jesús A. Varela
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
| | - Carlos Saá
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS) Departamento de Química Orgánica Universidade de Santiago de Compostela 15782 Santiago de Compostela Spain
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20
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Wang CY, Qin ZY, Huang YL, Hou YM, Jin RX, Li C, Wang XS. Enantioselective Copper-Catalyzed Remote C(sp3)–H Alkynylation of Linear Primary Sulfonamides. Org Lett 2020; 22:4006-4009. [DOI: 10.1021/acs.orglett.0c01325] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cheng-Yu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Zi-Yang Qin
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yu-Ling Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yi-Ming Hou
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Ruo-Xing Jin
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Chao Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
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21
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22
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Song HJ, Yoon E, Heo JN. Efficient synthesis of dibenzazepine lactams via a sequential Pd-catalyzed amination and aldol condensation reaction. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Bian KJ, Wang CY, Huang YL, Xu YH, Wang XS. Remote azidation of C(sp3)–H bonds to synthesize δ-azido sulfonamidesviairon-catalyzed radical relay. Org Biomol Chem 2020; 18:5354-5358. [DOI: 10.1039/d0ob00964d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A selective remote C–H azidation was developed with an iron catalyst playing dual roles as a radical initiator and terminator.
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Affiliation(s)
- Kang-Jie Bian
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- Center for Excellence in Molecular Synthesis of CAS
- University of Science and Technology of China
- Hefei
- China
| | - Cheng-Yu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- Center for Excellence in Molecular Synthesis of CAS
- University of Science and Technology of China
- Hefei
- China
| | - Yu-Ling Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- Center for Excellence in Molecular Synthesis of CAS
- University of Science and Technology of China
- Hefei
- China
| | - Yi-Hao Xu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- Center for Excellence in Molecular Synthesis of CAS
- University of Science and Technology of China
- Hefei
- China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- Center for Excellence in Molecular Synthesis of CAS
- University of Science and Technology of China
- Hefei
- China
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24
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Synthesis of naphtho[1,2‐
b
]‐, naphtho[2,1‐
b
]‐, and naphtho[2,3‐
b
]azepinones via proton‐induced cyclization of
N
‐1(2)‐naphthyl styrylacetamides. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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25
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Wang CY, Qin ZY, Huang YL, Jin RX, Lan Q, Wang XS. Enantioselective Copper-Catalyzed Cyanation of Remote C(sp 3)-H Bonds Enabled by 1,5-Hydrogen Atom Transfer. iScience 2019; 21:490-498. [PMID: 31707261 PMCID: PMC6849353 DOI: 10.1016/j.isci.2019.10.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 09/25/2019] [Accepted: 10/23/2019] [Indexed: 12/29/2022] Open
Abstract
The direct functionalization of C(sp3)-H bonds has led to the development of methods to access molecules or intermediates from basic chemicals in an atom- and step-economic fashion. Nevertheless, achieving high levels of chemo-, regio-, and enantioselectivity in these reactions remains challenging due to the ubiquity and low reactivity of C(sp3)-H bonds. Herein, we report an unprecedented protocol for enantioselective cyanation of remote C(sp3)-H bonds. With chiral Box-Cu complex as the catalyst, the reaction of N-fluorosulfonamide furnishes the corresponding products in excellent yields and high enantiomeric excess (ee) under mild reaction conditions. A radical relay pathway involving 1,5-hydrogen atom transfer (1,5-HAT) of N-center radicals followed by enantioselective cyanation of the in situ-formed benzyl radicals is proposed. This enantioselective copper-catalyzed cyanation thus offers insights into an efficient way for the synthesis of bioactive molecules for drug discovery.
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Affiliation(s)
- Cheng-Yu Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Zi-Yang Qin
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Yu-Ling Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Ruo-Xing Jin
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Quan Lan
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China.
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26
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Stockerl S, Danelzik T, Piekarski DG, García Mancheño O. Mild, Metal-Free Oxidative Ring-Expansion Approach for the Synthesis of Benzo[ b]azepines. Org Lett 2019; 21:4535-4539. [PMID: 31184182 DOI: 10.1021/acs.orglett.9b01433] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Benzo[ b]azepines are important structural motifs for the pharmaceutical industry. However, their syntheses are usually lengthy, involving several steps, transition-metal catalysts, and/or harsh conditions. A novel, general, mild, and metal-free oxidative ring expansion tandem reaction of hydroquinolines with TMSCHN2 as a versatile soft nucleophile to gain access to these valuable compounds in a simple and straightforward manner is presented.
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Affiliation(s)
- Sebastian Stockerl
- Organic Chemistry Institute , University of Münster , D-48149 Münster , Germany
| | - Tobias Danelzik
- Organic Chemistry Institute , University of Münster , D-48149 Münster , Germany
| | - Dariusz G Piekarski
- Organic Chemistry Institute , University of Münster , D-48149 Münster , Germany
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27
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Zhang Y, Yin Z, Wu X. Iron‐Catalyzed Synthesis of Dihydronaphthalenones from Aromatic Oxime Esters. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900283] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Youcan Zhang
- Leibniz-Institut für Katalyse e.V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Zhiping Yin
- Leibniz-Institut für Katalyse e.V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Xiao‐Feng Wu
- Leibniz-Institut für Katalyse e.V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
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28
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Gu YR, Duan XH, Chen L, Ma ZY, Gao P, Guo LN. Iminyl Radical-Triggered Intermolecular Distal C(sp3)–H Heteroarylation via 1,5-Hydrogen-Atom Transfer (HAT) Cascade. Org Lett 2019; 21:917-920. [DOI: 10.1021/acs.orglett.8b03865] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yu-Rui Gu
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Xin-Hua Duan
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Li Chen
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Zhi-Yong Ma
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Pin Gao
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
| | - Li-Na Guo
- Department of Chemistry, School of Science, Xi’an Key Laboratory of Sustainable Energy Material Chemistry, and MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an 710049, China
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29
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Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1425] [Impact Index Per Article: 237.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
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Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
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30
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Dhandabani GK, Mutra MR, Wang JJ. Palladium-Catalyzed Regioselective Synthesis of 1-Benzoazepine Carbonitriles from o
-Alkynylanilines via 7-endo
-dig Annulation and Cyanation. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800865] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ganesh Kumar Dhandabani
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University, No. 100; Shih-Chuan 1st Rd, Sanmin District Kaohsiung City, 807 Taiwan
| | - Mohana Reddy Mutra
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University, No. 100; Shih-Chuan 1st Rd, Sanmin District Kaohsiung City, 807 Taiwan
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry; Kaohsiung Medical University, No. 100; Shih-Chuan 1st Rd, Sanmin District Kaohsiung City, 807 Taiwan
- Department of Medical Research; Kaohsiung Medical University Hospital; No. 100 Tzyou 1st Rd, Sanmin District, Kaohsiung City 807 Taiwan
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31
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Kong L, Sun Y, Zheng Z, Tang R, Wang M, Li Y. Chemoselective N–H or C-2 Arylation of Indole-2-carboxamides: Controllable Synthesis of Indolo[1,2-a]quinoxalin-6-ones and 2,3′-Spirobi[indolin]-2′-ones. Org Lett 2018; 20:5251-5255. [DOI: 10.1021/acs.orglett.8b02197] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lingkai Kong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, China
| | - Yue Sun
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Zhong Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Rong Tang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Mengdan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yanzhong Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
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32
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Aeyad T, Jones CG, Coldham I. Preparation of Substituted Tetrahydro-1-benzazepines by Lithiation-Trapping. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800868] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tahani Aeyad
- Department of Chemistry; University of Sheffield; Brook Hill 7HF Sheffield S3 UK
| | - Callum G. Jones
- Department of Chemistry; University of Sheffield; Brook Hill 7HF Sheffield S3 UK
| | - Iain Coldham
- Department of Chemistry; University of Sheffield; Brook Hill 7HF Sheffield S3 UK
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33
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Wang GW, Bower JF. Modular Access to Azepines by Directed Carbonylative C-C Bond Activation of Aminocyclopropanes. J Am Chem Soc 2018; 140:2743-2747. [PMID: 29461050 PMCID: PMC5834216 DOI: 10.1021/jacs.7b13087] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
![]()
A modular
Rh-catalyzed entry to azepines is outlined. Under a CO
atmosphere, protecting group directed C–C bond activation of
aminocyclopropanes provides rhodacyclopentanones. These
intermediates are effective for intramolecular C–H metalation
of either an N-aryl or N-vinyl unit en route to azepine ring systems.
Thus, byproduct-free heterocyclizations are enabled by sequential
C–C activation and C–H functionalization steps.
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Affiliation(s)
- Gang-Wei Wang
- School of Chemistry, University of Bristol , Bristol, BS8 1TS, United Kingdom
| | - John F Bower
- School of Chemistry, University of Bristol , Bristol, BS8 1TS, United Kingdom
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34
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35
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Wang S, An XD, Li SS, Liu X, Liu Q, Xiao J. Hydride transfer initiated ring expansion of pyrrolidines toward highly functionalized tetrahydro-1-benzazepines. Chem Commun (Camb) 2018; 54:13833-13836. [DOI: 10.1039/c8cc08238c] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of ring expansion from a five-membered nitrogen-containing ring to a seven-membered heterocyclic ring has been developed.
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Affiliation(s)
- Shuai Wang
- Shandong Province Key Laboratory of Applied Mycology
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Xiao-De An
- Shandong Province Key Laboratory of Applied Mycology
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Shuai-Shuai Li
- Shandong Province Key Laboratory of Applied Mycology
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Xicheng Liu
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Qing Liu
- College of Chemical and Environmental Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Jian Xiao
- Shandong Province Key Laboratory of Applied Mycology
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
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36
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Zhang J, Jin W, Cheng C, Luo F. Copper-catalyzed remote oxidation of alcohols initiated by radical difluoroalkylation of alkenes: facile access to difluoroalkylated carbonyl compounds. Org Biomol Chem 2018; 16:3876-3880. [DOI: 10.1039/c8ob00889b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A Cu-catalyzed oxidation of alcohols triggered by the radical difluoroalkylation of alkenes has been developed.
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Affiliation(s)
- Jian Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Weiwei Jin
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Cungui Cheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Fang Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Department of Chemistry
- Zhejiang Normal University
- Jinhua 321004
- China
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37
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Li SS, Zhou L, Wang L, Zhao H, Yu L, Xiao J. Organocatalytic C(sp 3)-H Functionalization via Carbocation-Initiated Cascade [1,5]-Hydride Transfer/Cyclization: Synthesis of Dihydrodibenzo[b,e]azepines. Org Lett 2017; 20:138-141. [PMID: 29239184 DOI: 10.1021/acs.orglett.7b03492] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Carbocation-initiated cascade [1,5]-hydride transfer/cyclization and dimerization reactions were developed to synthesize dihydrodibenzo[b,e]azepine and octahydrodipyrroloquinoline derivatives in high yields. These redox-neutral C(sp3)-H functionalization-involving cascade reactions feature transition-metal-free, high atom- and step-economy, and environmental friendliness with water as the sole byproduct.
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Affiliation(s)
- Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Lan Zhou
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Huaili Zhao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Liping Yu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
| | - Jian Xiao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University , Qingdao 266109, China
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