1
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Nishikata T. α-Halocarbonyls as a Valuable Functionalized Tertiary Alkyl Source. ChemistryOpen 2024; 13: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 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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3
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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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4
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Takeda A, Oka M, Iida H. Atom-Economical Syntheses of Dihydropyrroles Using Flavin-Iodine-Catalyzed Aerobic Multistep and Multicomponent Reactions. J Org Chem 2023. [PMID: 37183405 DOI: 10.1021/acs.joc.3c00444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Herein, we report facile, atom-economical syntheses of multisubstituted 2,3-dihydropyrroles using flavin-iodine-catalyzed aerobic oxidative multistep transformations of chalcones with β-enamine ketones or 1,3-dicarbonyl compounds and amines. Exploiting coupled flavin-iodine catalysis, the multistep reaction, including C-C and C-N bond formation, is promoted only by the consumption of O2 (1 atm), thus allowing aerobic oxidative synthesis that generates green H2O as the only waste.
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Affiliation(s)
- Aki Takeda
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Marina Oka
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Hiroki Iida
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
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5
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Liu D, Lu X, Chai Z, Yang H, Sun Y, Yu F. Progress in Construction of 2 H-Pyrrol-2-ones Skeleton. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202207006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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6
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Sathish E, Gupta AK, Deeksha, Mishra SK, Sawant DM, Singh R. Heteroarylation of Congested α-Bromoamides with Imidazo-Heteroarenes and Indolizines via Aza-Oxyallyl Cations: Enroute to Dibenzoazepinone and Zolpidem Analogues. J Org Chem 2022; 87:14168-14176. [PMID: 36260747 DOI: 10.1021/acs.joc.2c01708] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Herein, we report a highly efficient and unprecedented approach for heteroarylation of congested α-bromoamides via electrophilic aromatic substitution of imidazo-heteroarenes and indolizines under mild reaction conditions (room temperature, metal, and oxidant free). The participation of an in situ generated aza-oxyallyl cation as an alkylating agent is the hallmark of this transformation. The method was readily adapted to synthesize novel imidazo-heteroarene-fused dibenzoazepinone architectures of potential medicinal value.
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Affiliation(s)
- Elagandhula Sathish
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan305817, India
| | - Ashis Kumar Gupta
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan305817, India
| | - Deeksha
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan305817, India
| | - Sandeep Kumar Mishra
- Department of Physics and NMR Research Center, Indian Institute of Science Education and Research, 411008Pune, India
| | - Devesh M Sawant
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan305817, India
| | - Ritesh Singh
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan305817, India
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7
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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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8
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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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9
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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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10
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Li Yan Xu, Zhou Y, Wang B, Wang XR, Li Q. Theoretical Prediction of Properties of Cyclopenta[b]pyrrol-2-one Derivatives. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2020. [DOI: 10.1134/s0036024420100313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Iqbal S, Rasheed H, Awan RJ, Awan RJ, Mukhtar A, Moloney MG. Recent Advances in the Synthesis of Pyrroles. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200528125651] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pyrroles are the most prevalent heterocyclic compounds, which are present as the basic cores in
many natural products, such as vitamin B12, bile pigments like bilirubin and biliverdin, the porphyrins of
heme, chlorophyll, chlorins, bacteriochlorins, and porphyrinogens. The biological activities of compounds
having pyrrole analogs include antimicrobial (antibacterial, antifungal), anti-cancer (anti-cytotoxic, antimitotic),
anti-tumor, anti-hyperlipidemic, anti-depressant, anti-inflammatory, antihyperglycemic, antiproliferative,
anti-HIV and anti-viral activities. Accordingly, significant attention has been paid to develop competent
methods for the synthesis of pyrroles with improved yields in short times. This review gives an overview of
different methods for the synthesis of pyrrole using easily available precursors using the following routes.
Synthesis of monosubstituted pyrrole using 2,5-dimethoxyfuran
Synthesis of pyrrole using dialkylacetylene dicarboxylate
Synthesis of pyrroles using β-ketoester
Synthesis of pyrrole using 1,2-dicarbonyl compounds
Synthesis of pyrroles using 1,3-dicarbonyl compounds
Synthesis of pyrroles using 1,3-dicarbonyl, amine, nitro and aldehyde group
Synthesis of pyrroles using 1,4-dicarbonyl compound and amines
Synthesis of pyrrole using enones
Synthesis of pyrroles using moieties having acetylene group
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Affiliation(s)
- Sarosh Iqbal
- Department of Applied Chemistry, Government College University, Faisalabad-38000, Faisalabad, Pakistan
| | - Hina Rasheed
- Department of Applied Chemistry, Government College University, Faisalabad-38000, Faisalabad, Pakistan
| | - Rabiya Javed Awan
- Department of Applied Chemistry, Government College University, Faisalabad-38000, Faisalabad, Pakistan
| | - Ramsha Javed Awan
- Department of Applied Chemistry, Government College University, Faisalabad-38000, Faisalabad, Pakistan
| | - Asma Mukhtar
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering Lahore University of Management Sciences, Lahore-54792, Lahore, Pakistan
| | - Mark G. Moloney
- Department of Chemistry, Chemistry Research Laboratory, The University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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12
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Neto JSS, Zeni G. Transition Metal‐Catalyzed and Metal‐Free Cyclization Reactions of Alkynes with Nitrogen‐Containing Substrates: Synthesis of Pyrrole Derivatives. ChemCatChem 2020. [DOI: 10.1002/cctc.201902325] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jose S. S. Neto
- Departamento de QuímicaUniversidade Federal de Santa Catarina Florianópolis Santa Catarina 88040-900 Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNEUniversidade Federal de Santa Maria Santa Maria Rio Grande do Sul 97105-900 Brazil
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13
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Shi Y, Wang G, Chen Z, Wu M, Wang J, Trigoura L, Guo H, Xing Y, Sun S. Synthesis of spiro(indoline‐3,1′‐pyrazolo[1,2‐
a
]pyrazoles) by 1,3‐dipolar cycloadditions of isatin
N
,
N
′‐cyclic azomethine imines with alkynes. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yang Shi
- School of Pharmacy, Hubei University of Science and Technology, Xianning, China
- Department of ChemistryWilliam Paterson University of New Jersey Wayne New Jersey
- School of Pharmaceutical SciencesTsinghua University Beijing China
| | - Gangqiang Wang
- School of Pharmaceutical SciencesTsinghua University Beijing China
| | - Zhiyu Chen
- Non‐power Nuclear Technology Collaborative Innovation Center, School of Nuclear Technology and Chemistry & BiologyHubei University of Science and Technology Xianning China
- School of Pharmaceutical SciencesTsinghua University Beijing China
| | - Minghu Wu
- Non‐power Nuclear Technology Collaborative Innovation Center, School of Nuclear Technology and Chemistry & BiologyHubei University of Science and Technology Xianning China
| | - Jian Wang
- Non‐power Nuclear Technology Collaborative Innovation Center, School of Nuclear Technology and Chemistry & BiologyHubei University of Science and Technology Xianning China
- School of Pharmaceutical SciencesTsinghua University Beijing China
| | - Leslie Trigoura
- Department of ChemistryWilliam Paterson University of New Jersey Wayne New Jersey
| | - Haibing Guo
- Non‐power Nuclear Technology Collaborative Innovation Center, School of Nuclear Technology and Chemistry & BiologyHubei University of Science and Technology Xianning China
| | - Yalan Xing
- Department of ChemistryWilliam Paterson University of New Jersey Wayne New Jersey
| | - Shaofa Sun
- Non‐power Nuclear Technology Collaborative Innovation Center, School of Nuclear Technology and Chemistry & BiologyHubei University of Science and Technology Xianning China
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14
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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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15
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Rao Kovvuri VR, Xue H, Romo D. Generation and Reactivity of 2-Amido-1,3-diaminoallyl Cations: Cyclic Guanidine Annulations via Net (3 + 2) and (4 + 3) Cycloadditions. Org Lett 2020; 22:1407-1413. [PMID: 32009413 DOI: 10.1021/acs.orglett.0c00019] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Toward a method for direct conversion of alkenes to cyclic guanidines, we report that 1,3-dipolar cycloadditions of 2-amido-1,3-diamino allylic cations with alkenes provide a new method for direct cyclic guanidine annulation. Generated under oxidative conditions, the 2-amido-1,3-diaminoallyl cations react as 1,3-dipoles providing rapid access to 2-amino imidazolines through net (3 + 2) cycloadditions. The utility is demonstrated through a concise synthesis of the oroidin alkaloid, phakellin. The described 1,3-dipole also participates in net (4 + 3) cycloadditions with dienes.
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Affiliation(s)
- V Raghavendra Rao Kovvuri
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , Texas 76798 , United States
| | - Haoran Xue
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , Texas 76798 , United States
| | - Daniel Romo
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place #97348 , Waco , Texas 76798 , United States
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16
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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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17
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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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18
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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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19
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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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20
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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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21
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Cheng X, Cao X, Zhou S, Cai B, He X, Xuan J. Transition‐Metal Free Construction of Isoquinoline‐fused Triazines Containing Alkenyl C−X Bonds. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801181] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xiao Cheng
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui University, Hefei Anhui 230601 People's Republic of China
| | - Xia Cao
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui University, Hefei Anhui 230601 People's Republic of China
| | - Shuang‐Jing Zhou
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui University, Hefei Anhui 230601 People's Republic of China
| | - Bao‐Gui Cai
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui University, Hefei Anhui 230601 People's Republic of China
| | - Xiang‐Kui He
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui University, Hefei Anhui 230601 People's Republic of China
| | - Jun Xuan
- Department of Chemistry and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized MaterialsAnhui University, Hefei Anhui 230601 People's Republic of China
- Institute of Physical Science and Information TechnologyAnhui University, Hefei Anhui 230601 People's Republic of China
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22
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Chen Y, Fuyue L, Wang G, Wang H, Lu C, Guo H, St. Amant C, Sun S, Xing Y. Synthesis of 1,2,4-oxadiazolidines via [3+2] cycloaddition of nitrones with carbodiimides. NEW J CHEM 2019. [DOI: 10.1039/c9nj00030e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient [3+2] cycloaddition of nitrones and carbodiimides has been developed.
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Affiliation(s)
- Yuan Chen
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Liuting Fuyue
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Gangqiang Wang
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Hang Wang
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Chun Lu
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Haibing Guo
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Chiara St. Amant
- Department of Chemistry
- William Paterson University of New Jersey
- Wayne
- USA
| | - Shaofa Sun
- Non-power Nuclear Technology Collaborative Innovation Center
- School of Nuclear Technology and Chemistry & Biology
- Hubei University of Science and Technology
- Xianning 437100
- China
| | - Yalan Xing
- Department of Chemistry
- William Paterson University of New Jersey
- Wayne
- USA
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23
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El Bouakher A, Martel A, Comesse S. α-Halogenoacetamides: versatile and efficient tools for the synthesis of complex aza-heterocycles. Org Biomol Chem 2019; 17:8467-8485. [DOI: 10.1039/c9ob01683j] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review presents the use of α-alkyl- and α-alkoxy-halogenoacetamides as powerful partners for domino and 1,3-dipolar cycloaddition reactions resulting in a ring closure.
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Affiliation(s)
| | - Arnaud Martel
- IMMM
- UMR 6283 CNRS
- Le Mans Université
- 72085 Le Mans
- France
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24
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Sun S, Chen R, Wang G, Wang J. Sodium carbonate promoted [3 + 2] annulation of α-halohydroxamates and isocyanates. Org Biomol Chem 2018; 16:8011-8014. [PMID: 30334046 DOI: 10.1039/c8ob02321b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new [3 + 2] annulation of readily available α-halohydroxamates and isocyanates has been developed. This protocol allows a rapid assembly of various hydantoins in good to high yields as well as a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Shaofa Sun
- Non-power Nuclear Technology Collaborative Innovation Center, School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning, 437100, China.
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25
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Eyilcim O, Issever S, Ocal N, Gronert S, Erden I. Imidazolidin-4-ones via (3+2) cycloadditions of aza-oxyallyl cations onto ( E)- Narylideneanilines. Tetrahedron Lett 2018; 59:3674-3677. [PMID: 30449908 DOI: 10.1016/j.tetlet.2018.08.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
In the course of our studies on the chemistry of oxyallyl species we uncovered a new (3+2) cycloaddition of aza-oxyallyl systems, generated in situ from N-benzyloxy-2-chloroamides in the presence of NEt3, onto N-arylimines yielding imidazolidin-4-ones in moderate to good yields. The cycloadditions are regioselective. Computational modelling using DFT at the M062×/6-311+G** level is in support the observed regioselectivities. Although the path to the trans imidazolin-4-one is favored, the cis product is preferred by almost 8 kcal/mol and could be formed by base-catalyzed epimerization. All products were isolated by chromatography and characterized by means of their FTIR, NMR and HRMS data.
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Affiliation(s)
- Oznur Eyilcim
- Department of Chemistry, Faculty of Arts and Sciences, Yildiz Technical University, Davutpasa Campus, 34220 Esenler-Istanbul, Turkey
| | - Sezin Issever
- Department of Chemistry, Faculty of Arts and Sciences, Yildiz Technical University, Davutpasa Campus, 34220 Esenler-Istanbul, Turkey
| | - Nuket Ocal
- Department of Chemistry, Faculty of Arts and Sciences, Yildiz Technical University, Davutpasa Campus, 34220 Esenler-Istanbul, Turkey
| | - Scott Gronert
- Department of Chemistry Virginia Commonwealth University, 1001 West Main Street, Richmond, Virginia 23284, USA
| | - Ihsan Erden
- Department of Chemistry and Biochemistry, San Francisco State University, 1600 Holloway Avenue, San Francisco, Ca 94132, USA
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26
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Chen R, Sun S, Wang G, Guo H. A highly diastereoselective [3+3] annulation reaction of aza-oxyallyl cations and nitrones. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.085] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Efficient synthesis of 1,2,4-oxadiazine-5-ones via [3+3] cycloaddition of in situ generated aza-oxyallylic cations with nitrile oxides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Highly efficient [3+3] cycloaddition reactions of in situ generated aza-oxyallyl cation with nitrones. HETEROCYCL COMMUN 2018. [DOI: 10.1515/hc-2018-0001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractAn efficient protocol was developed for the synthesis of 1,2,4-oxadiazinan-5-one derivatives via [3+3] cycloaddition ofin situgenerated aza-oxyallyl cations with nitrones. This method provides high yields of the heterocyclic products, excellent regioselectivity and broad substrate scope.
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29
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Ji D, Sun J. [3 + 2]-Cycloaddition of Azaoxyallyl Cations with Hexahydro-1,3,5-triazines: Access to 4-Imidazolidinones. Org Lett 2018; 20:2745-2748. [DOI: 10.1021/acs.orglett.8b00951] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Danqing Ji
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China
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30
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DiPoto MC, Wu J. Synthesis of 2-Aminoimidazolones and Imidazolones by (3 + 2) Annulation of Azaoxyallyl Cations. Org Lett 2018; 20:499-501. [PMID: 29320191 DOI: 10.1021/acs.orglett.7b03719] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first examples of (3 + 2) annulations between azaoxyallyl cations and cyanamides and nitriles to give the corresponding 2-aminoimidazolones and imidazolones are reported. On the basis of the isolation of unexpected imidate products with certain substrates, it is proposed that the reaction proceeds via fast kinetic O-alkylation followed by rearrangement to the thermodynamically favored 2-aminoimidazolones and imidazolones. The method was applied to the formal synthesis of the antihypertensive drug irbesartan.
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Affiliation(s)
- Maria C DiPoto
- Department of Chemistry, Dartmouth College , Hanover, New Hampshire 03755, United States
| | - Jimmy Wu
- Department of Chemistry, Dartmouth College , Hanover, New Hampshire 03755, United States
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31
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Xuan J, Cao X, Cheng X. Advances in heterocycle synthesis via [3+m]-cycloaddition reactions involving an azaoxyallyl cation as the key intermediate. Chem Commun (Camb) 2018; 54:5154-5163. [DOI: 10.1039/c8cc00787j] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This feature article highlights recent advances in heterocycle synthesis via [3+m]-cycloaddition reactions involving an azaoxyallyl cation as the key intermediate.
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Affiliation(s)
- Jun Xuan
- Department of Chemistry
- Anhui University
- Hefei
- China
| | - Xia Cao
- Department of Chemistry
- Anhui University
- Hefei
- China
| | - Xiao Cheng
- Department of Chemistry
- Anhui University
- Hefei
- China
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32
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Zhang Y, Ma H, Liu X, Cui X, Wang S, Zhan Z, Pu J, Huang G. The synthesis of multi-substituted pyrrolidinones via a direct [3 + 2] cycloaddition of azaoxyallyl cations with aromatic ethylenes. Org Biomol Chem 2018; 16:4439-4442. [DOI: 10.1039/c8ob00899j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A novel [3 + 2] cycloaddition reaction of azaoxyallyl cations and aromatic ethylenes has been developed to afford multi-substituted pyrrolidinones in moderate to good yields.
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Affiliation(s)
- Yixin Zhang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Haojie Ma
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Xingxing Liu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Xinfeng Cui
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Shaohua Wang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Zhenzhen Zhan
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Jinghong Pu
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
| | - Guosheng Huang
- State Key Laboratory of Applied Organic Chemistry
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province
- Department of Chemistry
- Lanzhou University
- Lanzhou 730000
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33
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Jin Q, Gao M, Zhang D, Jiang C, Yao N, Zhang J. Base-mediated [2 + 4] cycloadditions of in situ formed azaoxyallyl cations with N-(2-chloromethyl)aryl amides. Org Biomol Chem 2018; 16:7336-7339. [PMID: 30270381 DOI: 10.1039/c8ob02176g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A base-mediated [2 + 4] annulation of in situ formed azaoxyallyl cations with in situ generated aza-oQMs has been realized.
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Affiliation(s)
- Qiaomei Jin
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Meng Gao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Dongjian Zhang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Cuihua Jiang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Nan Yao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
| | - Jian Zhang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine
- Nanjing University of Chinese Medicine
- Nanjing 210028
- China
- Laboratories of Translational Medicine
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34
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Cheng X, Cao X, Xuan J, Xiao WJ. Silver(I)- and Base-Mediated [3 + 3]-Cycloaddition of C,N-Cyclic Azomethine Imines with Aza-oxyallyl Cations. Org Lett 2017; 20:52-55. [PMID: 29215289 DOI: 10.1021/acs.orglett.7b03344] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A silver(I) and base-mediated [3 + 3]-cycloaddition reaction of in situ generated C,N-cyclic azomethine imines with in situ formed aza-oxyallyl cations is reported. This one-pot cycloaddition process shows broad substrate scope an excellent functional group tolerance and provides the corresponding biologically important isoquinoline-fused triazines in good to excellent yields.
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Affiliation(s)
- Xiao Cheng
- Department of Chemistry, Anhui University , Hefei, Anhui 230601, People's Republic of China
| | - Xia Cao
- Department of Chemistry, Anhui University , Hefei, Anhui 230601, People's Republic of China
| | - Jun Xuan
- Department of Chemistry, Anhui University , Hefei, Anhui 230601, People's Republic of China
| | - Wen-Jing Xiao
- Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University , 152 Luoyu Road, Wuhan, Hubei 430079, People's Republic of China
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35
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Wang G, Zhao S, Chen R, Yang L, Wang J, Guo H, Wu M, Domena J, Xing Y, Sun S. Synthesis of thiazolidin-4-ones via [3+2] cycloaddition of in situ generated aza-oxyallylic cations with isothiocyanates. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Xuan J, Cheng X, Cao X. [3+3] Cycloaddition ofin SituFormed Azaoxyallyl Cations with Nitrones: Synthesis of 1,2,4-Oxadiazinan-5-one Derivatives. ChemistrySelect 2017. [DOI: 10.1002/slct.201700826] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jun Xuan
- Department of Chemistry; Anhui University, Hefei; Anhui 230601 People's Republic of China
| | - Xiao Cheng
- Department of Chemistry; Anhui University, Hefei; Anhui 230601 People's Republic of China
| | - Xia Cao
- Department of Chemistry; Anhui University, Hefei; Anhui 230601 People's Republic of China
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37
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Schlegel M, Schneider C. Lewis Acid-Catalyzed Nucleophilic Addition of Indoles to in Situ-Generated 2-Amidoallyl Cations. J Org Chem 2017; 82:5986-5992. [DOI: 10.1021/acs.joc.7b00791] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marcel Schlegel
- Institut für Organische
Chemie, University of Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische
Chemie, University of Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
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