1
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Nishikata T. α-Halocarbonyls as a Valuable Functionalized Tertiary Alkyl Source. ChemistryOpen 2024:e202400108. [PMID: 38989712 DOI: 10.1002/open.202400108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/21/2024] [Indexed: 07/12/2024] Open
Abstract
This review introduces the synthetic organic chemical value of α-bromocarbonyl compounds with tertiary carbons. This α-bromocarbonyl compound with a tertiary carbon has been used primarily only as a radical initiator in atom transfer radical polymerization (ATRP) reactions. However, with the recent development of photo-radical reactions (around 2010), research on the use of α-bromocarbonyl compounds as tertiary alkyl radical precursors became popular (around 2012). As more examples were reported, α-bromocarbonyl compounds were studied not only as radicals but also for their applications in organometallic and ionic reactions. That is, α-bromocarbonyl compounds act as nucleophiles as well as electrophiles. The carbonyl group of α-bromocarbonyl compounds is also attractive because it allows the skeleton to be converted after the reaction, and it is being applied to total synthesis. In our survey until 2022, α-bromocarbonyl compounds can be used to perform a full range of reactions necessary for organic synthesis, including multi-component reactions, cross-coupling, substitution, cyclization, rearrangement, stereospecific reactions, asymmetric reactions. α-Bromocarbonyl compounds have created a new trend in tertiary alkylation, which until then had limited reaction patterns in organic synthesis. This review focuses on how α-bromocarbonyl compounds can be used in synthetic organic chemistry.
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Affiliation(s)
- Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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2
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Zhang S, Zhang X, Li L, Shi Z, Wang Y. Synthesis of Pyridazino[4,5-b]indoles by [3+3] Annulation of 2-Alkenylindoles and Hydrazonyl Chlorides. Chemistry 2024; 30:e202400278. [PMID: 38406889 DOI: 10.1002/chem.202400278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 02/27/2024]
Abstract
A novel [3+3] annulation reaction of 2-alkenylindoles with hydrazonyl chlorides in the presence of base for the formation of pyridazino[4,5-b]indoles was developed. This approach provided a convenient and efficient way to synthesize a series of functionalized pyridazino[4,5-b]indoles derivatives. The method exhibited a broad substrate scope and provided the corresponding pyridazino[4,5-b]indoles products with excellent yields.
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Affiliation(s)
- Shuting Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Xinyu Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Lesong Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Zhenyu Shi
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
| | - Yang Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology (QNLM), Qingdao, 266237, China
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3
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Zhang X, Dai HY, Liu WC, Zeng R, Dai Z, Wang YP, Li JL, Li QZ, Han B. Base-Promoted Formal (3 + 2) Cycloaddition of α-Halohydroxamates with Electron-Deficient Alkenyl-iminoindolines To Synthesize Spiro-indolinepyrrolidinones. J Org Chem 2023; 88:14619-14633. [PMID: 37789599 DOI: 10.1021/acs.joc.3c01619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Construction of pyrrolidinyl-spiroindoles with easily available starting materials has attracted considerable attention from the synthesis community and is in great demand. Here, we describe a base-promoted formal (3 + 2) cycloaddition of α-halohydroxamates with alkenyl-iminoindolines. The present methodology features mild reaction conditions and a broad substrate scope with up to 99% yield and excellent diastereoselectivity. The versatility of this approach is demonstrated through valuable synthetic transformations. Preliminary mechanistic studies shed light on the mechanism of this cycloaddition process.
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Affiliation(s)
- Xiang Zhang
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Hai-Yu Dai
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, P. R. China
| | - Wan-Cong Liu
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Rong Zeng
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Zhen Dai
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Ya-Peng Wang
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Jun-Long Li
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Qing-Zhu Li
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
| | - Bo Han
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of pharmacy, Chengdu University, Chengdu 610106, P. R. China
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
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4
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Lan W, Yu X, Li M, Lei R, Qin Z, Fu B. A concise approach to 2-pyrrolin-5-one scaffold construction from α-halohydroxamates and β-keto compounds. Org Biomol Chem 2023; 21:7535-7540. [PMID: 37674436 DOI: 10.1039/d3ob01140b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
A concise approach to the construction of the 2-pyrrolin-5-one scaffold was developed via a one-pot reaction with formal [3 + 2] annulation/elimination between β-keto nitrile/β-keto ester and unsubstituted α-halohydroxamates. This reaction features mild conditions, easy handling, broad substrate scope and good yields. Remarkably, the products could be readily converted into potentially bioactive alkylidenepyrrolinones, pyrroles, pyran-fused pyrrole heterocycles and other useful compounds, exhibiting versatile synthetic potential.
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Affiliation(s)
- Wenjie Lan
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Xuan Yu
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Mengzhu Li
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Rongchao Lei
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Zhaohai Qin
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Bin Fu
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
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5
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Karjee P, Mandal S, Debnath B, Namdev N, Punniyamurthy T. Expedient (3+3)-annulation of in situ generated azaoxyallyl cations with diaziridines. Chem Commun (Camb) 2023. [PMID: 37317582 DOI: 10.1039/d3cc02136j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Efficient annulation of in situ formed azaoxyallyl cations using a base has been accomplished with diaziridines to provide 1,2,4-triazines at room temperature. The substrate scope, scale up, functional group tolerance and transition-metal free reaction conditions are the important practical features.
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Affiliation(s)
- Pallab Karjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Santu Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Nirali Namdev
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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6
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Deeksha, Sathish E, Kiran, Singh R. Access to Sterically Hindered Thioethers (α-Thioamides) Under Mild Conditions Using α-Halohydroxamates: Application toward 1,4-Benzothiazinones and 4,1-Benzothiazepinones. J Org Chem 2023; 88:901-908. [PMID: 36576371 DOI: 10.1021/acs.joc.2c02274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, we report a new and highly efficient approach for synthesizing congested α-thioamides under mild reaction conditions (mild base, room temperature, and short duration) using α-halo hydroxamates as direct alkylating agents. The reaction works well with both (hetero)aryl and alkyl thiols, tolerating a broad functional group and diverse substrate scope, including benzeneselenol for selenoether construction. The strategy enables efficient synthesis of biologically relevant 1,4 benzothiazinone and 4,1-benzothiazepinone cores, along with various other functionalized sulfur-based scaffolds of biological importance.
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Affiliation(s)
- Deeksha
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - Elagandhula Sathish
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - Kiran
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - Ritesh Singh
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
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7
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Bera T, Singh B, Gandon V, Saha J. Experimental and Theoretical Investigation of an Azaoxyallyl Cation‐Templated Intramolecular Aryl Amination Leading to Oxindole Derivatives. Chemistry 2022; 28:e202201208. [DOI: 10.1002/chem.202201208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Tishyasoumya Bera
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
| | - Bandana Singh
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168, Ecole Polytechnique Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau cedex France
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
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8
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Motiwala HF, Armaly AM, Cacioppo JG, Coombs TC, Koehn KRK, Norwood VM, Aubé J. HFIP in Organic Synthesis. Chem Rev 2022; 122:12544-12747. [PMID: 35848353 DOI: 10.1021/acs.chemrev.1c00749] [Citation(s) in RCA: 117] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) is a polar, strongly hydrogen bond-donating solvent that has found numerous uses in organic synthesis due to its ability to stabilize ionic species, transfer protons, and engage in a range of other intermolecular interactions. The use of this solvent has exponentially increased in the past decade and has become a solvent of choice in some areas, such as C-H functionalization chemistry. In this review, following a brief history of HFIP in organic synthesis and an overview of its physical properties, literature examples of organic reactions using HFIP as a solvent or an additive are presented, emphasizing the effect of solvent of each reaction.
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Affiliation(s)
- Hashim F Motiwala
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Ahlam M Armaly
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jackson G Cacioppo
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Thomas C Coombs
- Department of Chemistry, University of North Carolina Wilmington, Wilmington, North Carolina 28403 United States
| | - Kimberly R K Koehn
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Verrill M Norwood
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
| | - Jeffrey Aubé
- Divison of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 United States
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9
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Bera T, Singh B, Jana M, Saha J. Access to 3,3'-disubstituted peroxyoxindole derivatives and α-peroxyamides via azaoxyallyl cation-guided addition of hydroperoxides. Chem Commun (Camb) 2022; 58:7538-7541. [PMID: 35703384 DOI: 10.1039/d2cc02378d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a transition metal-free approach for access to 3,3'-disubstituted peroxyoxindole is disclosed, which harnesses a transient azaoxyallyl cation. This strategy is also applicable to the synthesis of structurally diverse α-peroxycarboxylic acid surrogates. The method exhibits good functional group tolerance and is suitable for generating a library of peroxy-containing compounds.
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Affiliation(s)
- Tishyasoumya Bera
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India. .,Department of Chemistry, University of Kalyani, Kalyani-741235, India
| | - Bandana Singh
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Manoranjan Jana
- Department of Chemistry, University of Kalyani, Kalyani-741235, India
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
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10
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Wan H, Xia S, Liu X, Jian Y, An Y, Wang Y. Synthesis of spirocyclic oxazole derivatives from 2-arylidene cycloalkanones and α-halohydroxamates. Org Biomol Chem 2022; 20:4293-4297. [PMID: 35575057 DOI: 10.1039/d2ob00701k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein we disclose a facile route to spirocyclic oxazole derivatives via [3 + 2] cycloaddition reactions between 2-arylidene cycloalkanones and azaoxyallyl cations that formed in situ from α-halohydroxamates in the presence of base. This methodology was shown to lead to an efficient formation of a series of functionalized spirocyclic oxazole derivatives in good to excellent yields.
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Affiliation(s)
- Huiyang Wan
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Shuangshuang Xia
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Xinghua Liu
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Yongchan Jian
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Yuanyuan An
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China.
| | - Yubin Wang
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211816, P.R. China.
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11
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Xie L, Hu L, Wu P, Zhao Y, Li G, Cui J, Gao Z, Wu L, Nie S. [8 + 3]‐cycloaddition reactions of heptafulvenes or azaheptafulvenes with a‐halohydroxamates. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lei Xie
- Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 252000 Liao cheng CHINA
| | - Lina Hu
- Liao Cheng University: Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
| | - Ping Wu
- Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
| | - Yunxu Zhao
- Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
| | - Guiling Li
- Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
| | - Jichun Cui
- Liaocheng University College of Chemistry and Chemical Engineering No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
| | - Zhenzhen Gao
- Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
| | - Ligang Wu
- Liaocheng University College of Chemistry and Chemical engineering No. 1, Hunan Road 252000 Liaocheng CHINA
| | - Shaozhen Nie
- Liaocheng University School of Pharmaceutical Sciences No. 1 Hunan Road, Liaocheng City, Shandong Province, China 25200 Liao Cheng CHINA
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12
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Lei X, Feng J, Guo Q, Xu C, Shi J. Base-Promoted Formal [3 + 2] Cycloaddition of α-Halohydroxamates with Carbon Disulfide to Synthesize Polysubstituted Rhodanines. Org Lett 2022; 24:2837-2841. [PMID: 35394789 DOI: 10.1021/acs.orglett.2c00736] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A concise and practical strategy via potassium-carbonate-mediated [3 + 2]-cycloaddition reaction of α-halohydroxamates with the common solvent carbon disulfide for the synthesis of functionalized rhodanine derivatives in good to excellent yields is developed. The present methodology features a wide substrate scope as well as good functional group tolerance. The potential synthetic utility of this protocol is demonstrated by synthesis of a series of natural product derivatives containing rhodamine skeletons.
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Affiliation(s)
- Xiaoqiang Lei
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Juan Feng
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, People's Republic of China
| | - Qinglan Guo
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Chengbo Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Jiangong Shi
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, People's Republic of China
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13
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Taily IM, Saha D, Banerjee P. Aza-Oxyallyl Cation Driven 3-Amido Oxetane Rearrangement to 2-Oxazolines: Access to Oxazoline Amide Ethers. J Org Chem 2022; 87:2155-2166. [PMID: 35129349 DOI: 10.1021/acs.joc.1c03108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we report a highly facile and unprecedented activation of 3-amido oxetanes to synthesize 2-oxazoline amide ethers using a transient electrophilic aza-oxyallyl cation as an activating as well as an alkylating agent under mild reaction conditions. The aza-oxyallyl cation driven intramolecular rearrangement of 3-amido oxetanes to 2-oxazolines is the hallmark of this transformation and is a new addition to the reactivity profile of aza-oxyallyl cations.
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Affiliation(s)
- Irshad Maajid Taily
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Debarshi Saha
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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14
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Lan W, Lei R, Luo J, Qin Z, Fu B, Xie L. A Facile Approach to Benzosultam‐fused 4‐Imidazolidinone Derivatives from N‐Sulfonyl Ketimine and α‐Halogenated Hydroxamates. ChemistrySelect 2022. [DOI: 10.1002/slct.202103670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wenjie Lan
- College of Science China Agricultural University Beijing 100193 P. R. China
| | - Rong‐chao Lei
- College of Science China Agricultural University Beijing 100193 P. R. China
| | - Jiayu Luo
- College of Science China Agricultural University Beijing 100193 P. R. China
| | - Zhaohai Qin
- College of Science China Agricultural University Beijing 100193 P. R. China
| | - Bin Fu
- College of Science China Agricultural University Beijing 100193 P. R. China
| | - Lei Xie
- School of Pharmacy Liaocheng University Shandong 252000 P. R. China
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15
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Biswas S, Duari S, Maity S, Roy A, Elsharif AM, Biswas S. (3 + 2) cycloaddition of 2-alkoxynaphthalenes with azaoxyallyl cations: access to benzo[ e]indolones. Org Biomol Chem 2022; 20:8400-8404. [DOI: 10.1039/d2ob01441f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A route to functionalized benzo[e]indolones has been reported via (3 + 2) cycloaddition of in situ generated azaoxyallyl cations with alkoxynaphthalene followed by aryl C–O bond cleavage. The intermediate adduct has been isolated and characterized.
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Affiliation(s)
- Subrata Biswas
- Dept. of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata–700 009, West Bengal, India
| | - Surajit Duari
- Dept. of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata–700 009, West Bengal, India
| | - Srabani Maity
- Dept. of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata–700 009, West Bengal, India
| | - Arnab Roy
- Dept. of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata–700 009, West Bengal, India
| | - Asma M. Elsharif
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Srijit Biswas
- Dept. of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata–700 009, West Bengal, India
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16
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Huang L, Yao Z, Huang G, Ao Y, Zhu B, Li S, Cui X. One‐Pot Synthesis of Fused Indolin‐3‐Ones via a [3+3] Cycloaddition Reaction. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100842] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lang Huang
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Zhenyu Yao
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Guanghua Huang
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Yaqi Ao
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Bin Zhu
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Sanshu Li
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Xiuling Cui
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
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17
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Lee CY, Kim S. Metal‐free Nucleophilic α‐Azidation of α‐Halohydroxamates with Azidotrimethylsilane. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100556] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chang Yoon Lee
- Department of Chemistry Kyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
| | - Sung‐Gon Kim
- Department of Chemistry Kyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
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18
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Sun Jang H, Kim SG. Asymmetric catalytic [3 + 3]-cycloaddition of γ-hydroxy-α,β-unsaturated ketones with azaoxyallyl cations. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Hu X, Tan Z, Xiong L, Yang C, Jiang H, Zeng W. Rh(III)-Catalyzed Csp 2-Csp 3 σ-Bond Enolation of α-Indolyl Alcohols. Org Lett 2021; 23:3965-3969. [PMID: 33955759 DOI: 10.1021/acs.orglett.1c01132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Rh(III)-catalyzed Csp2-Csp3 σ-bond carbenoid functionalization of α-(2-indolyl)alcohols with acceptor/acceptor diazo compounds has been developed. This transformation provides an efficient strategy to assemble stable C2-enolated indole skeletons via Csp2-Csp3 σ-bond cleavage.
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Affiliation(s)
- Xinwei Hu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Zheng Tan
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Li Xiong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Can Yang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Wei Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
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20
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Sun X, Guo XQ, Chen LM, Kang TR. Synthesis, Characterization of Spirocyclic λ 3 -Iodanes and Their Application to Prepare 4,1-Benzoxazepine-2,5-diones and 1,3-Diynes. Chemistry 2021; 27:4312-4316. [PMID: 33326645 DOI: 10.1002/chem.202005124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/15/2020] [Indexed: 11/10/2022]
Abstract
Herein, a [3+2] cycloaddition of aza-oxyallylic cations with ethynylbenziodoxolones for synthesis of new λ3 -iodanes containing spirocyclic 4-oxazolidinone has been developed. This cyclic λ3 -iodanes display stability in air and excellent solubility in organic solvent. Using them as substrate, both the 4,1-benzoxazepine-2,5-diones and symmetrical 1,3-diynes derivatives were afforded in high yield under copper(I)-catalyzed conditions.
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Affiliation(s)
- Xu Sun
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China.,Collaborative Innovation Center of Tissue Repair Material of, Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong City, Sichuan, 637002, P. R. China
| | - Xiao-Qiang Guo
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China
| | - Lian-Mei Chen
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China
| | - Tai-Ran Kang
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China.,Collaborative Innovation Center of Tissue Repair Material of, Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong City, Sichuan, 637002, P. R. China
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21
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Leng HJ, Li QZ, Xiang P, Qi T, Dai QS, Jia ZQ, Gou C, Zhang X, Li JL. Diastereoselective [3 + 1] Cyclization Reaction of Oxindolyl Azaoxyallyl Cations with Sulfur Ylides: Assembly of 3,3'-Spiro[β-lactam]-oxindoles. Org Lett 2021; 23:1451-1456. [PMID: 33522815 DOI: 10.1021/acs.orglett.1c00130] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oxindoles and β-lactams are attractive structural motifs because of their unique biological importance. However, the fusion of the two moieties featuring 3,3'-spirocyclic scaffolds is a challenging task in organic synthesis. Herein we designed a novel type of oxindole-based azaoxyallyl cation synthons, which could readily participate in the [3 + 1] cyclization with sulfur ylides. With this protocol, a collection of 3,3-spiro[β-lactam]-oxindoles were facilely produced in up to 94% yield with perfect diastereoselectivity.
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Affiliation(s)
- Hai-Jun Leng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
| | - Qing-Zhu Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Peng Xiang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Ting Qi
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Qing-Song Dai
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Zhi-Qiang Jia
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Chuan Gou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Xiang Zhang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China
| | - Jun-Long Li
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, School of Pharmacy, Chengdu University, Chengdu 610052, China.,State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China
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22
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Reddy CR, Srinivasu E, Sathish P, Subbarao M, Donthiri RR. One-Pot Arylative Benzannulation of 2-Carbonyl-3-propargyl Indoles with Boronic Acids Leading to Arylated Carbazoles. J Org Chem 2021; 86:1118-1132. [PMID: 33322899 DOI: 10.1021/acs.joc.0c02601] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Arylative annulation of 2-carbonyl-3-propargyl indoles with boronic acids under sequential palladium/triflic acid catalysis is described. The present strategy to provide di- and triaryl carbazoles in one pot involves benzannulation through difunctionalization of alkynes. The strategy showed a good substrate scope with respect to boronic acids as well as 2-carbonyl-3-propargyl indoles to afford the corresponding carbazoles in decent yields.
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Affiliation(s)
- Chada Raji Reddy
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ejjirotu Srinivasu
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Puppala Sathish
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Muppidi Subbarao
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ramachandra Reddy Donthiri
- Department of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
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23
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Fang QY, Jin HS, Wang RB, Zhao LM. A Role for Isatin Azomethine Imines as a Dipolarophile in Cycloaddition Reactions. Org Lett 2020; 22:7358-7362. [PMID: 32875804 DOI: 10.1021/acs.orglett.0c02705] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unusual [2 + 3] cycloaddition of isatin azomethine imines (AIs) and in situ generated azaoxyallyl cations has been developed. It is the first example where AIs serve as the [C,O] 2-atom synthon in organic synthesis. This work not only reveals a new role of isatin AIs in cycloaddition reaction but also provides an efficient access to unprecedented spiroheterocycle compounds.
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Affiliation(s)
- Qing-Yun Fang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Hai-Shan Jin
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Ru-Bing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China.,State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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24
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Transition-metal-free synthesis of 1,4-benzoxazepines via [4+3]-cycloaddition of para-quinone methides with azaoxyallyl cations. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9832-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Kim E, Lee CY, Kim S. HFIP‐Mediated Decarboxylative [4+3]‐Annulation of Azaoxyallyl Cations with Isatoic Anhydride. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000439] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eunjin Kim
- Department of ChemistryKyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Chang Yoon Lee
- Department of ChemistryKyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Sung‐Gon Kim
- Department of ChemistryKyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
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26
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Son EC, Lee J, Kim SG. Base-Promoted Cycloaddition of γ-Hydroxy- and δ-Hydroxy-α,β-Unsaturated Carbonyls with Azaoxyallyl Cations: Rapid Synthesis of N,O
-Heterocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000368] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Eun Chae Son
- Department of Chemistry; Kyonggi University; 154-42 Gwanggyosan-ro 16227 Yeongtong-gu Suwon Republic of Korea
| | - Jiseon Lee
- Department of Chemistry; Kyonggi University; 154-42 Gwanggyosan-ro 16227 Yeongtong-gu Suwon Republic of Korea
| | - Sung-Gon Kim
- Department of Chemistry; Kyonggi University; 154-42 Gwanggyosan-ro 16227 Yeongtong-gu Suwon Republic of Korea
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27
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Chae Son E, Kim S. Metal‐free Nucleophilic Alkoxylation of in Situ‐Generated Azaoxyallyl Cations: Synthesis of Hindered Dialkyl Ether Derivatives. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Eun Chae Son
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
| | - Sung‐Gon Kim
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
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28
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Xie L, Guo SN, Wu P, Gao Z, Liu F, Yuan C. [3 + 3] Cycloaddition of aza-oxyallyl cations with 1,4-dithiane-2,5-diols for the construction of 3-thiomorpholinones. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1740738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Lei Xie
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong, P. R. China
| | - Sheng-nan Guo
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong, P. R. China
| | - Ping Wu
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong, P. R. China
| | - Zhenzhen Gao
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong, P. R. China
| | - Fang Liu
- School of Pharmacy, Liaocheng University, Liaocheng, Shandong, P. R. China
| | - Chunhao Yuan
- College of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai’an, Shandong, P. R. China
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29
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Yuan C, Zhang H, Yuan M, Xie L, Cao X. Synthesis of 1,4-diazepinone derivatives via a domino aza-Michael/S N2 cyclization of 1-azadienes with α-halogenoacetamides. Org Biomol Chem 2020; 18:1082-1086. [PMID: 31971222 DOI: 10.1039/c9ob02626f] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel cyclization of α-halogenoacetamides with 1-azadienes has been developed for the efficient preparation of monocyclic 1,4-diazepinones in one step under transition metal-free conditions. Various α-halogenoacetamides and 1-azadienes are well tolerated and give the desired products in good to excellent yields. This cyclization also demonstrates potential synthetic utility on a gram-scale and further transformation.
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Affiliation(s)
- Chunhao Yuan
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, P. R. China.
| | - Hui Zhang
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, P. R. China.
| | - Mengna Yuan
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, P. R. China.
| | - Lei Xie
- School of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, P. R. China
| | - Xiaoqun Cao
- School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, Shandong, P. R. China.
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30
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Liu H, Slawin AMZ, Smith AD. Isothiourea-Catalyzed Enantioselective Synthesis of Tetrahydro-α-carbolinones. Org Lett 2020; 22:1301-1305. [DOI: 10.1021/acs.orglett.9b04615] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Honglei Liu
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K
| | - Alexandra M. Z. Slawin
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K
| | - Andrew D. Smith
- EaStCHEM, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, U.K
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31
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Fantinati A, Zanirato V, Marchetti P, Trapella C. The Fascinating Chemistry of α-Haloamides. ChemistryOpen 2020; 9:100-170. [PMID: 32025460 PMCID: PMC6996577 DOI: 10.1002/open.201900220] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 11/19/2019] [Indexed: 12/17/2022] Open
Abstract
The aim of this review is to highlight the rich chemistry of α-haloamides originally mainly used to discover new C-N, C-O and C-S bond forming reactions, and later widely employed in C-C cross-coupling reactions with C(sp3), C(sp2) and C(sp) coupling partners. Radical-mediated transformations of α-haloamides bearing a suitable located unsaturated bond has proven to be a straightforward alternative to access diverse cyclic compounds by means of either radical initiators, transition metal redox catalysis or visible light photoredox catalysis. On the other hand, cycloadditions with α-halohydroxamate-based azaoxyallyl cations have garnered significant attention. Moreover, in view of the important role in life and materials science of difluoroalkylated compounds, a wide range of catalysts has been developed for the efficient incorporation of difluoroacetamido moieties into activated as well as unactivated substrates.
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Affiliation(s)
- Anna Fantinati
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Vinicio Zanirato
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Paolo Marchetti
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Claudio Trapella
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
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32
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Ring opening [3 + 2] cyclization of azaoxyallyl cations with benzo[d]isoxazoles: Efficient access to 2-hydroxyaryl-oxazolines. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.09.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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33
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Kwon Y, Choi S, Jang HS, Kim SG. Rapid Access to Hindered α-Amino Acid Derivatives and Benzodiazepin-3-ones from Aza-Oxyallyl Cations. Org Lett 2020; 22:1420-1425. [DOI: 10.1021/acs.orglett.0c00023] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- YongIl Kwon
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro Yeongtong-gu, Suwon 16227, Republic of Korea
| | - Sunyoung Choi
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro Yeongtong-gu, Suwon 16227, Republic of Korea
| | - Hyun Sun Jang
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro Yeongtong-gu, Suwon 16227, Republic of Korea
| | - Sung-Gon Kim
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro Yeongtong-gu, Suwon 16227, Republic of Korea
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34
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Ye C, Yang WL, Zhai Y, Deng H, Luo X, Kai G, Deng WP. Copper(i)-catalyzed asymmetric [3 + 3] annulation involving aziridines to construct tetrahydro-β-carbolines. Org Chem Front 2020. [DOI: 10.1039/d0qo00742k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-catalyzed asymmetric [3 + 3] annulation of 2-vinylindoles with 2-aryl aziridines has been described, providing direct access to enantioenriched tetrahydro-β-carbolines.
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Affiliation(s)
- Chao Ye
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wu-Lin Yang
- College of Pharmacy
- Zhejiang Chinese Medical University
- Hangzhou 310053
- China
- Shanghai Key Laboratory of New Drug Design
| | - Yufei Zhai
- College of Pharmacy
- Zhejiang Chinese Medical University
- Hangzhou 310053
- China
| | - Hua Deng
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiaoyan Luo
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Guoyin Kai
- College of Pharmacy
- Zhejiang Chinese Medical University
- Hangzhou 310053
- China
| | - Wei-Ping Deng
- College of Pharmacy
- Zhejiang Chinese Medical University
- Hangzhou 310053
- China
- Shanghai Key Laboratory of New Drug Design
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35
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Xing S, Guo J, Wang Y, Wang C, Wang K, Zhu B. General and efficient synthesis of 1,2-dihydropyrrolo[3,4- b]indol-3-ones via a formal [3 + 2] cycloaddition initiated by C–H activation. Org Chem Front 2020. [DOI: 10.1039/d0qo00922a] [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 [Cp*RhCl2]2-catalyzed formal [3 + 2] cycloaddition involving a sequential coupling reaction initiated by C–H activation and aza-Michael addition has been developed for the general and efficient synthesis of 1,2-dihydropyrrolo[3,4-b]indol-3-ones.
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Junsuo Guo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Yuhan Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Chenyu Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- People's Republic of China
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36
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Fang QY, Zhao LM. A [4+3] annulation of benzofuran-derived azadienes and α-bromohydroxamates for the synthesis of benzofuran-fused 1,4-diazepinones. Chem Commun (Camb) 2020; 56:14079-14082. [DOI: 10.1039/d0cc06061e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Cs2CO3-mediated formal [4+3] cycloaddition involving benzofuran-derived azadienes (BDAs) and α-bromohydroxamates to afford benzofuran-fused 1,4-diazepinones is established.
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Affiliation(s)
- Qing-Yun Fang
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou 221116
- China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science
- Jiangsu Normal University
- Xuzhou 221116
- China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
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37
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Song B, Wang M, Xu M, Kong L, Xie H, Wang C, Li Y. Controllable synthesis of pyrido[2,3-b]indol-4-ones or indolo[3,2-b]quinolines via formal intramolecular C(sp 2)-H functionalization. Org Biomol Chem 2019; 17:9960-9965. [PMID: 31730146 DOI: 10.1039/c9ob02108f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel Fe-catalyzed protocol for the controllable synthesis of pyrido[2,3-b]indol-4-ones or indolo[3,2-b]quinolines has been developed by using indole-2-carboxylic derivatives as starting materials. Indole-2-carboxenamines were transformed into pyrido[2,3-b]indol-4-ones through intramolecular N-H/C-H coupling, in which a carbonyl 1,2-migration was involved. Whereas, when indole-2-carboxarylamines were employed, indolo[3,2-b]quinolones were produced through direct N-H/C-H coupling. The desired products were obtained under mild reaction conditions in moderate to good yields with wide substrate scope. The natural product quindolinone was conveniently prepared by this reaction.
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Affiliation(s)
- Bo Song
- 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.
| | - Murong Xu
- 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.
| | - 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.
| | - Huihui Xie
- 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.
| | - Chengyu Wang
- School of Chemistry and Chemical Engineering, Linyi University, Shuangling Road, Linyi, Shandong 276000, 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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38
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Roy T, Jacob A, Bhattacharjee S, Biju AT. [8+3]-Cycloaddition of Tropones with Azaoxyallyl Cations. Chem Asian J 2019; 14:4748-4753. [PMID: 31529771 DOI: 10.1002/asia.201901198] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/17/2019] [Indexed: 01/17/2023]
Abstract
Although azaoxyallyl cations are widely used as 1,3-dipoles for various cycloaddition reactions leading to nitrogen-containing heterocycles, their application in higher-order cycloaddition reaction remains scarce. Herein, we present the [8+3]-cycloaddition reaction of tropones with in situ generated azaoxyallyl cations allowing the one-step construction of cycloheptatriene-fused 1,4-oxazinones in moderate to good yields. This base-promoted new carbon-oxygen and carbon-nitrogen bond-forming reaction takes place under mild conditions in the absence of transition metal catalysts.
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Affiliation(s)
- Tony Roy
- Organic Chemistry Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110020, India
| | - Anu Jacob
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-, 560012, India
| | - Subrata Bhattacharjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-, 560012, India
| | - Akkattu T Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-, 560012, India
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39
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Wang CC, Zhou J, Ma ZW, Chen XP, Chen YJ. Synthesis of spirobarbiturate-pyrrolidinones via a domino aza-Michael/S N2 cyclization of barbiturate-derived alkenes with N-alkoxy α-haloamides. Org Biomol Chem 2019; 17:9200-9208. [PMID: 31596301 DOI: 10.1039/c9ob01992h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient domino aza-MIRC (Michael Induced Ring Closure) reaction between barbiturate-derived alkenes and N-alkoxy α-haloamides has been achieved in moderate to excellent yields. This reaction proceeds smoothly under mild conditions via a domino aza-Michael addition/intramolecular SN2 sequence, providing a practical tool in the synthesis of bioactive molecules spirobarbiturate-3-pyrrolidinones.
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Affiliation(s)
- Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 2 Yingcai Street, Huiji District, Zhengzhou 450044, Henan, PR China
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40
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Jin Q, Zhang D, Zhang J. Facile synthesis of 1,2,4,5-tetrahydro-1,4-benzodiazepin-3-ones via cyclization of N-alkoxy α-halogenoacetamides with N-(2-chloromethyl)aryl amides. Org Biomol Chem 2019; 17:9708-9711. [PMID: 31701983 DOI: 10.1039/c9ob02260k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and efficient cyclization of N-alkoxy α-halogenoacetamides with N-(2-chloromethyl)aryl amides has been achieved for rapid access to 1,2,4,5-tetrahydro-1,4-benzodiazepine-3-one derivatives (up to 95% yield). The intriguing features of this intermolecular cyclization include its mild reaction conditions and easy handling for scalable synthesis.
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Affiliation(s)
- Qiaomei Jin
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu, China. and Laboratories of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu, China
| | - Dongjian Zhang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu, China. and Laboratories of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu, China
| | - Jian Zhang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, Jiangsu, China. and Laboratories of Translational Medicine, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, Jiangsu, China
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41
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Bera T, Singh B, Hamlin TA, Sahoo SC, Saha J. One-Step Assembly of Functionalized Morpholinones and 1,4-Oxazepane-3-ones via [3 + 3]- and [3 + 4]-Annulation of Aza-Oxyallyl Cation and Amphoteric Compounds. J Org Chem 2019; 84:15255-15266. [PMID: 31702149 DOI: 10.1021/acs.joc.9b02269] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new [3 + 3]- and [3 + 4]-annulation strategy involving azaoxyallyl cation and [1,m]-amphoteric compounds (m = 3,4) is presented. This concise method enables easy assembly of functionalized saturated N-heterocycles, comprised of six-and seven-membered rings and is of high significance in the context of drug discovery approaches. This reaction also represents a new trapping modality of the azaoxyallyl cation with amphoteric agents of different chain lengths that consist of a heteroatom nucleophilic site and a π-electrophilic site.
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Affiliation(s)
- Tishyasoumya Bera
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus. Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
| | - Bandana Singh
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus. Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
| | - Trevor A Hamlin
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM) , Vrije Universiteit Amsterdam , De Boelelaan 1083 , Amsterdam 1081 HV , The Netherlands
| | - Subash C Sahoo
- Department of Chemistry , Panjab University , Sector 14 , Chandigarh 160014 , India
| | - Jaideep Saha
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus. Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
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42
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Kim E, Mun D, Kim S. Synthesis of Dihydrobenzoxazine‐Fused Spirooxazoline‐4‐ones via [3+2] Cycloaddition of Azaoxyallyl Cations with Vinyl Benzoxazinanones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900517] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Eunjin Kim
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Dasom Mun
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Sung‐Gon Kim
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
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43
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Ji W, Li CL, Chen H, Yu ZX, Liao X. A newly designed heterodiene and its application to construct six-membered heterocycles containing an N-O bond. Chem Commun (Camb) 2019; 55:12012-12015. [PMID: 31538167 DOI: 10.1039/c9cc05694g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of zwitterionic nitrosoalkene generated in situ from dehydrohalogenation of α-halo-N-alkylhydroxamic acids was designed. [4+2] cycloadditions of this heterodiene to olefins provide a facile route to construct six-membered heterocycles containing an N-O bond and a new protocol for 1,2-syn carbohydroxylate alkenes with a hydroxyl and acetamide group. DFT calculations support a concerted cycloaddition pathway and the solvent HFIP can stabilize the transition state through H-bonding interaction.
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Affiliation(s)
- Wenzhi Ji
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
| | - Chen-Long Li
- Beijing National Laboratory for Molecular Science (BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry Of Education, College of Chemistry Peking University, Beijing, 100871, China.
| | - Hui Chen
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Science (BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry Of Education, College of Chemistry Peking University, Beijing, 100871, China.
| | - Xuebin Liao
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, China.
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44
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Gour J, Gatadi S, Akunuri R, Yaddanapudi MV, Nengroo MA, Datta D, Chopra S, Nanduri S. Catalyst-free facile synthesis of polycyclic indole/pyrrole substituted-1,2,3-triazoles. Org Biomol Chem 2019; 17:8153-8165. [PMID: 31460554 DOI: 10.1039/c9ob01560d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general and catalyst-free access to the fused polycyclic N-heterocycles via an intramolecular azide-alkene cascade reaction under mild reaction conditions has been developed. The reaction is applicable to both indole and pyrrole substrates, and a variety of substituents are tolerated. The entire sequence can be carried out in a one-pot operation. This methodology provides a sustainable and efficient access to a variety of novel polycyclic indole/pyrrole substituted-1,2,3-triazoles.
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Affiliation(s)
- Jitendra Gour
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Srikanth Gatadi
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | - Ravikumar Akunuri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
| | | | - Mushtaq Ahmad Nengroo
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Dipak Datta
- Biochemistry Division, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Sitapur Road, Sector 10, Janakipuram Extension, Lucknow 226031, Uttar Pradesh, India
| | - Srinivas Nanduri
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, India.
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45
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Feng J, Zhao M, Lin X. [3 + 2]-Cycloaddition of Azaoxyallyl Cations with 1,2-Benzisoxazoles: A Rapid Entry to Oxazolines. J Org Chem 2019; 84:9548-9560. [PMID: 31257878 DOI: 10.1021/acs.joc.9b01166] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel and efficient [3 + 2] cycloaddition reaction of azaoxyallyl cations and 1,2-benzisoxazoles to give oxazoline derivatives has been developed. The transformation provides a rapid entry to functionalized oxazoline scaffolds under mild and transition-metal-free conditions, which will greatly expand the reaction types of heterocycle chemistry and pave the way for syntheses of bioactive compounds.
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Affiliation(s)
- Juan Feng
- School of Pharmaceutical Sciences , Capital Medical University , Beijing 100069 , China.,Beijing Area Major Laboratory of Peptide and Small Molecular Drugs , Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China , Beijing 100069 , China.,Beijing Laboratory of Biomedical Materials, Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology) , Ministry of Education , Beijing 100029 , China
| | - Ming Zhao
- School of Pharmaceutical Sciences , Capital Medical University , Beijing 100069 , China.,Beijing Area Major Laboratory of Peptide and Small Molecular Drugs , Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China , Beijing 100069 , China.,Beijing Laboratory of Biomedical Materials, Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology) , Ministry of Education , Beijing 100029 , China
| | - Xuanzi Lin
- School of Pharmaceutical Sciences , Capital Medical University , Beijing 100069 , China
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46
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Feng J, Zhou M, Lin X, Lu A, Zhang X, Zhao M. Base-Mediated [3 + 4]-Cycloaddition of Anthranils with Azaoxyallyl Cations: A New Approach to Multisubstituted Benzodiazepines. Org Lett 2019; 21:6245-6248. [DOI: 10.1021/acs.orglett.9b02118] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan Feng
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing, China
- Beijing Laboratory of Biomedical Materials, Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, China
| | - Meng Zhou
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Xuanzi Lin
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - An Lu
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Xiaoyi Zhang
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing, China
- Beijing Laboratory of Biomedical Materials, Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, China
| | - Ming Zhao
- School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing, China
- Beijing Laboratory of Biomedical Materials, Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, China
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47
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He ZL, Chen Y, Wang X, Ni M, Wang G. Access to thiomorpholin-3-one derivatives: [3 + 3]-cycloadditions of α-chlorohydroxamates and 1,4-dithiane-2,5-diol. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.07.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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48
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Sun L, Liu Y, Wang Y, Li Y, Liu Z, Lu T, Li W. An efficient synthesis of oxazolines via a cascade reaction between azaoxyallyl cations and 1,2-benzisoxazoles. Org Biomol Chem 2019; 17:7526-7530. [PMID: 31368471 DOI: 10.1039/c9ob01366k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A formal [3 + 2] cycloaddition reaction between the C and O terminals of azaoxyallyl cations formed in situ and 1,2-benzisoxazoles has been realized. This one-pot cycloaddition method provided an effective and practical pathway to synthesize oxazoline in good yields under mild conditions. The title products exhibited unique fluorescence properties.
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Affiliation(s)
- Li Sun
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
| | - Yi Liu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
| | - Yankai Wang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
| | - Yuanyuan Li
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
| | - Zhiwen Liu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
| | - Tao Lu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
| | - Wenhai Li
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing, 210009, P. R. China.
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49
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Jaiswal V, Mondal B, Singh K, Das D, Saha J. [3 + 2]-Annulation of Azaoxyallyl Cations and Thiocarbonyls for the Assembly of Thiazolidin-4-ones. Org Lett 2019; 21:5848-5852. [PMID: 31294998 DOI: 10.1021/acs.orglett.9b01933] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A base-promoted, efficient [3 + 2] annulation between azaoxyallyl cations and thiocarbonyls is reported for flexible access to highly functionalized thiazolidin-4-one derivatives in good to excellent yields. An intriguing feature of this method is the metal or Lewis acid free late-stage entry of distinct set of functional groups at C2 of thiazolidin-4-ones via substitution of a latent amino functional group. Overall, this approach constitutes a general platform for convenient access to this medicinally important scaffold.
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Affiliation(s)
- Vandana Jaiswal
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus, Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
| | - Biplab Mondal
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus, Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
| | - Kuldeep Singh
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus, Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
| | - Dinabandhu Das
- School of Physical Sciences , Jawaharlal Nehru University , New Delhi 110067 , India
| | - Jaideep Saha
- Division of Molecular Synthesis & Drug Discovery , Centre of Biomedical Research (CBMR) , SGPGIMS Campus, Raebareli Road , Lucknow 226014 , Uttar Pradesh , India
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50
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Zhou S, Cheng X, Xuan J. [3+2]‐Cycloaddition of Azaoxyallyl Cations with Cyclopropenones and Cyclopropenethiones: Synthesis of Spirocyclic Oxazole and Thiazole Derivatives. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900272] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Shuang‐Jing Zhou
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials College of Chemistry & Chemical EngineeringAnhui University Hefei, Anhui 230601 China
| | - Xiao Cheng
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials College of Chemistry & Chemical EngineeringAnhui University Hefei, Anhui 230601 China
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials College of Chemistry & Chemical EngineeringAnhui University Hefei, Anhui 230601 China
- Institute of Physical Science and Information TechnologyAnhui University Hefei, Anhui 230601 China
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