1
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Deeksha, Singh R. Heteroannulation of Arynes with α-Bromodifluorohydroxamates: An Efficient and General Approach to Access 2,2-Difluoro Indoxyls. Org Lett 2024; 26:5682-5688. [PMID: 38934600 DOI: 10.1021/acs.orglett.4c01720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Herein, we report the first general approach to access N-alkoxy-2,2-difluoro indoxyls, via formal 3 + 2 cycloaddition of aryne and (putative) fluorinated-aza-oxyallyl cation. This transition-metal/oxidant-free transformation occurs under mild reaction conditions with a short reaction time. Mechanistic investigation indicates the possible involvement of the closed form of fluorinated-aza-oxyallyl cation, viz., α-lactam, in the current transformation.
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Affiliation(s)
- Deeksha
- Department of Chemistry, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
| | - Ritesh Singh
- Department of Chemistry, Central University of Rajasthan, Ajmer, Rajasthan 305817, India
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2
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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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3
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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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4
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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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5
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Wang B, Ren H, Cao HJ, Lu C, Yan H. A switchable redox annulation of 2-nitroarylethanols affording N-heterocycles: photoexcited nitro as a multifunctional handle. Chem Sci 2022; 13:11074-11082. [PMID: 36320483 PMCID: PMC9516892 DOI: 10.1039/d2sc03590a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/15/2022] [Indexed: 09/09/2023] Open
Abstract
The efficient transformation of nitroaromatics to functional molecules such as N-heterocycles has been an attractive and significant topic in synthesis chemistry. Herein, a photoexcited nitro-induced strategy for switchable annulations of 2-nitroarylethanols was developed to construct N-heterocycles including indoles, N-hydroxyl oxindoles and N-H oxindoles. The metal- and photocatalyst-free reaction proceeds through intramolecular redox C-N coupling of branched hydroxyalkyl and nitro units, which is initiated by a double hydrogen atom abstraction (d-HAA) process. The key to the switchable reaction outcomes is the mediation of a diboron reagent by its favorable oxy-transfer reactivity to in situ generated nitroso species. The utility of this protocol was well demonstrated by broad substrate scope, excellent yields, functional group tolerance and wide applications. Finally, detailed mechanistic studies were performed, and kinetic isotope effect (KIE) experiments indicate that the homolysis of the C-H bond is involved in the rate-determining step.
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Affiliation(s)
- Bin Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Hongyuan Ren
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Hou-Ji Cao
- School of Chemistry and Chemical Engineering, Henan Normal University XinXiang Henan 453007 China
| | - Changsheng Lu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University Nanjing 210023 China
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6
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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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7
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Sarmah M, Hazarika H, Gogoi P. Aryne Annulations for the Synthesis of Carbocycles and Heterocycles: An Updated Review. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1863-8622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Carbocycles and heterocycles are the most relevant structural moieties, which find boundless applications in interdisciplinary areas. In this regard, the interesting chemistry of aryne is highly embraced by the researchers for the synthesis of structurally different polycyclic systems i.e. carbocycles and heterocycles. In this review, we intended to provide a comprehensive overview on annulative approach considering Kobayashi's aryne intermediate as the key reactive species with diverse nucleo-/electrophilic partners. The review highlights the different aryne annulation reactions adopted for the synthesis of carbocycles and heterocycles (covering articles mainly from middle of 20’s), showcasing their viability towards broad range of substrates bearing diverse functionalities.
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Affiliation(s)
| | | | - Pranjal Gogoi
- Medicinal Chemistry, CSIR-NEIST Jorhat, Jorhat, India
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8
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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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9
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Shen H, Du Y, Kan J, Su W. Synthesis of 3-substituted 2-oxindoles from secondary α-bromo-propionanilides via palladium-catalyzed intramolecular cyclization. Org Biomol Chem 2022; 20:3589-3597. [PMID: 35420109 DOI: 10.1039/d2ob00480a] [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
In contrast to aromatic halides, coupling reactions involving oxidative addition of alkyl halides, especially secondary or tertiary halides, to transition metals tend to be more challenging. Herein a palladium-catalyzed intramolecular cyclization of α-bromo-propionanilides has been developed, delivering a series of 3-substituted 2-oxindoles in high yields. The method features easy to prepare starting materials, broad substrate scope and excellent functional group tolerance. A detailed mechanistic investigation has been performed.
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Affiliation(s)
- Hui Shen
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Yu Du
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Jian Kan
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Weiping Su
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China.,Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, P. R. China
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10
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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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11
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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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12
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Liu S, Xie P, Wu L, Zhao J, Cai Z, He L. Transition-Metal-Free Synthesis of 4-Amino Isoquinolin-1(2H)-ones via Tandem Reaction of Arynes and Oxazoles. Org Chem Front 2022. [DOI: 10.1039/d1qo01666k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and transition-metal-free method for the synthesis of 4-amino isoquinolin-1(2H)-ones has been developed. Arynes react with 4, 5-disubstituted oxazoles through a tandem Diels-Alder reaction/dehydrogenation-aromatization/tautamerization process to produce 4-amino isoquinolin-1(2H)-ones...
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13
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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14
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Mukherjee A, Ansari AJ, Rajagopala Reddy S, Kanti Das G, Singh R. Mechanistic Investigations for the Formation of Active Hexafluoroisopropyl Benzoates Involving Aza‐Oxyallyl Cation and Anthranils. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000424] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anirban Mukherjee
- National Institute of Pharmaceutical Education and Research (NIPER) Raebareli, Uttar Pradesh 229010 India
| | - Arshad J. Ansari
- School of Chemical Sciences and Pharmacy Central University of Rajasthan Bandarsindri, Kishangarh 305817, Rajasthan India
| | - S. Rajagopala Reddy
- School of Chemical Sciences and Pharmacy Central University of Rajasthan Bandarsindri, Kishangarh 305817, Rajasthan India
| | - Gourab Kanti Das
- Department of Chemistry Institute of Science (Siksha Bhavana) Visva-Bharati, Santiniketan 731235, West Bengal India
| | - Ritesh Singh
- School of Chemical Sciences and Pharmacy Central University of Rajasthan Bandarsindri, Kishangarh 305817, Rajasthan India
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15
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Adepu R, Dhanaji JR, Samatha P, Mainkar PS, Chandrasekhar S. Synthesis of 2-Amino-2′-hydroxy-1,1′-biaryls via Cascade Benzannulation and C–N Bond Cleavage Sequence. Org Lett 2020; 22:8224-8228. [DOI: 10.1021/acs.orglett.0c02749] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Raju Adepu
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jadhav Rahul Dhanaji
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Polasani Samatha
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Prathama S. Mainkar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srivari Chandrasekhar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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16
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Liu Y, Wu Z, Wang Y, Zhang Y, Shao J, Lu T, Li W. Synthesis of Active Hexafluoroisopropyl Benzoates via a Multicomponent Reaction. J Org Chem 2020; 85:7840-7847. [PMID: 32469532 DOI: 10.1021/acs.joc.0c00476] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we describe an efficient, practical free-metal rapid access to active hexafluoroisopropyl benzoates from anthranils, hexafluoroisopropanol, and N-alkoxy α-halogenoacetamides. Notably, this process includes anthranils that underwent a distinct pattern reaction. The protocol has good functional group tolerance and a broad substrate scope. Using a simple and general method, we accomplished potential synthetic application of active ester.
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Affiliation(s)
- Yi Liu
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Ziqiao Wu
- 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
| | - Yuheng Zhang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Shao
- 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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17
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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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18
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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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19
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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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20
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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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21
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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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22
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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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23
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Zhou J, Zhang H, Chen XL, Qu YL, Zhu Q, Feng CG, Chen YJ. Regio- and Diastereoselective Access to 4-Imidazolidinones via an Aza-Mannich Initiated Cyclization of Sulfamate-Derived Cyclic Imines with α-Halo Hydroxamates. J Org Chem 2019; 84:9179-9187. [DOI: 10.1021/acs.joc.9b01128] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jing Zhou
- School of Pharmaceutical Sciences; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, PR China
| | - Hong Zhang
- Mineral Processing and Biometallurgy Institute, Rock and Mineral Testing Center of Henan Province, 28 Jinshui Road, Zhengzhou, Henan 450012, PR China
| | - Xue-Lian Chen
- School of Pharmaceutical Sciences; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, PR China
| | - Ya-Li Qu
- School of Pharmaceutical Sciences; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, PR China
| | - Qianqian Zhu
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, PR China
| | - Chen-Guo Feng
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, PR China
| | - Ya-Jing Chen
- School of Pharmaceutical Sciences; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China; Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan 450001, PR China
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24
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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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25
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Wang W, Wan H, Du G, Dai B, He L. Synthesis of Benzo[b]fluoranthenes and Spiroacridines from Fluorene-Derived Alkenes and N-Arylimines via a Tandem Reaction with Benzynes. Org Lett 2019; 21:3496-3500. [DOI: 10.1021/acs.orglett.9b00659] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Weihua Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Hongwei Wan
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Guangfen Du
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Bin Dai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, China
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26
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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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27
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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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28
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Baldé B, Force G, Marin L, Guillot R, Schulz E, Gandon V, Lebœuf D. Synthesis of Cyclopenta[b]piperazinones via an Azaoxyallyl Cation. Org Lett 2018; 20:7405-7409. [DOI: 10.1021/acs.orglett.8b03103] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Boubacar Baldé
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Guillaume Force
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Lucile Marin
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Emmanuelle Schulz
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Université Paris-Saclay, route de Saclay, 91128 Palaiseau cedex, France
| | - David Lebœuf
- Institut de Chimie Moléculaire et des Matériaux d’Orsay (ICMMO), CNRS UMR 8182, Université Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
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