1
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Wang H, Wei Y, He Y, He TJ, Lin YW. Phosphine-Catalyzed Ring-Opening Regioselective Addition of Cyclopropenones with Amides. J Org Chem 2024; 89:10093-10098. [PMID: 38935753 DOI: 10.1021/acs.joc.4c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
A series of amides, including α-bromo hydroxamates, N-alkoxyamides, and N-aryloxyamides, were subjected to phosphine-catalyzed ring-opening O-selective addition with cyclopropenones, producing various special α,β-unsaturated esters containing oxime ether motif, in moderate to excellent yields, with high regioselectivity, and exclusive O-selectivity. The methodology is highly atom-economical, with simple operation procedures, and compatible with a wide substrate scope (more than 44 examples).
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Affiliation(s)
- Huamin Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Yibo Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Yongjun He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Tian-Juan He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, P. R. China
- Hengyang Medical College, University of South China, Hengyang 421001, P. R. China
- Laboratory of Protein Structure and Function, University of South China Medical School, Hengyang 421001, P. R. China
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2
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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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3
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Almajidi YQ, Abdullaev S, Haydar S, Al-Hetty HRAK, Ahmad I, Shafik SS, Alawadi AH, Alsalamy A, Bisht YS, Abbas HA. Magnetic nanocomposite based on chitosan-gelatin hydrogel embedded with copper oxide nanoparticles: A novel and promising catalyst for the synthesis of polyhydroquinoline derivatives. Int J Biol Macromol 2024; 263:130211. [PMID: 38423902 DOI: 10.1016/j.ijbiomac.2024.130211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/18/2024] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
Nanocatalysts are vital in several domains, such as chemical processes, energy generation, energy preservation, and environmental pollution mitigation. An experimental study was conducted at room temperature to evaluate the catalytic activity of the new gelatin-chitosan hydrogel/CuO/Fe3O4 nanocomposite in the asymmetric Hantzsch reaction. All components of the nanocomposite exhibit a synergistic effect as a Lewis acid, promote the reaction. Dimedone, ammonium acetate, ethyl acetoacetate, and other substituted aldehydes were used to synthesize diverse polyhydroquinoline derivatives. The nanocomposite exhibited exceptional efficacy (over 90 %) and durability (retaining 80 % of its original capacity after 5 cycles) as a catalyst in the one-pot asymmetric synthesis of polyhydroquinoline derivatives. Also, turnover numbers (TON) and turnover frequency (TOF) have been checked for catalyst (TON and TOF = 50,261 and 100,524 h-1) and products. The experiment demonstrated several benefits, such as exceptional product efficacy, rapid reaction time, functioning at ambient temperature without specific requirements, and effortless separation by the use of an external magnet after the reaction is finished. The results suggest the development of a magnetic nanocatalyst with exceptional performance. The composition of the Ge-CS hydrogel/CuO/Fe3O4 nanocomposite was thoroughly analyzed using several methods including FT-IR, XRD, FE-SEM, EDX, VSM, BET, and TGA. These analyses yielded useful information into the composition and characteristics of the nanocomposite, hence further enhancing the knowledge of its possible uses.
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Affiliation(s)
- Yasir Qasim Almajidi
- Baghdad College of Medical Sciences-department of pharmacy (pharmaceutics), Baghdad, Iraq
| | - Sherzod Abdullaev
- Faculty of Chemical Engineering, New Uzbekistan University, Tashkent, Uzbekistan; Scientific and Innovation Department, Tashkent State Pedagogical University named after Nizami, Tashkent, Uzbekistan.
| | - Sami Haydar
- Faculty of Mechanics and Design, Moscow Automobile and Road Construction State Technical University, Moscow, Russia; Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Mishref Campus, Kuwait
| | - Hussein Riyadh Abdul Kareem Al-Hetty
- Center Of Desert, University Of Anbar, Ramadi, Anbar, Iraq; Department of Biology, College of Education for Pure Sciences, University Of Anbar, Ramadi 31001, Anbar, Iraq.
| | - Irshad Ahmad
- Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Shafik Shaker Shafik
- Experimental Nuclear Radiation Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Iraq
| | - Ahmed Hussien Alawadi
- College of technical engineering, the Islamic University, Najaf, Iraq; College of technical engineering, the Islamic University of Al Diwaniyah, Iraq; College of technical engineering, the Islamic University of Babylon, Iraq
| | - Ali Alsalamy
- College of Technical Engineering, Imam Ja'afar Al-Sadiq University, Al-Muthanna, 66002, Iraq
| | - Yashwant Singh Bisht
- Department of Mechanical Engineering, Uttaranchal Institute of Technology, Uttaranchal University, Dehradun 248007, India
| | - Hussein Abdullah Abbas
- College of Technical Engineering, National University of Science and Technology, Dhi Qar, Iraq
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4
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Yao WZ, Cai BG, Xuan J. Rhodium-Catalyzed [3+2]-Cycloaddition of in-situ Generated Nitrile Ylides with Nitrosoarenes. Chem Asian J 2023:e202301053. [PMID: 38108615 DOI: 10.1002/asia.202301053] [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: 11/26/2023] [Revised: 12/16/2023] [Accepted: 12/18/2023] [Indexed: 12/19/2023]
Abstract
Herein we report the rhodium-catalyzed one-pot three-component reaction of diazo compounds, nitriles, and nitrosoarenes to construct 2,5-dihydro-1,2,4-oxadiazole derivatives. Mechanistic studies indicate that the transformation may proceed through the formation of nitrile ylides intermediates, which then undergo [3+2]-cycloaddition with nitrosoarenes. The strategy exhibits several synthetic advantages, including operational simplicity, good functional group tolerance, and scalability.
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Affiliation(s)
- Wei-Zhong Yao
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui, 230601, People's Republic of China
| | - Bao-Gui Cai
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui, 230601, People's Republic of China
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui, 230601, People's Republic of China
- Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University), Ministry of Education, Hefei, Anhui, 230601, People's Republic of China
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5
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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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6
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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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7
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Pramanik S, Mondal S, Chinarev A, Bovin NV, Saha J. Hydroxamate-directed access to β-Kdo glycosides. Chem Commun (Camb) 2023; 59:10028-10031. [PMID: 37526627 DOI: 10.1039/d3cc02609d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The reaction repertoire for forming transient aziridinone or azaoxyallyl cations from α-halohydroxamate is conceptually extended to design Kdo-glycosyl donors by installing the hydroxamate moiety at an anomeric centre, which is shown to be highly effective for stereoselective access to β-Kdo glycosides. The pivotal roles of hydroxamate over amide are revealed in control experiments.
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Affiliation(s)
- Sourav Pramanik
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), Lucknow 226014, India
| | - Soumik Mondal
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), Lucknow 226014, India
| | - Alexander Chinarev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - Nicolai V Bovin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - Jaideep Saha
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Mohali 160062, India.
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8
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Karjee P, Mandal S, Debnath B, Namdev N, Punniyamurthy T. Expedient (3+3)-annulation of in situ generated azaoxyallyl cations with diaziridines. Chem Commun (Camb) 2023. [PMID: 37317582 DOI: 10.1039/d3cc02136j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Efficient annulation of in situ formed azaoxyallyl cations using a base has been accomplished with diaziridines to provide 1,2,4-triazines at room temperature. The substrate scope, scale up, functional group tolerance and transition-metal free reaction conditions are the important practical features.
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Affiliation(s)
- Pallab Karjee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Santu Mandal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Bijoy Debnath
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Nirali Namdev
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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9
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Chniti S, Kollár L, Bényei A, Dörnyei Á, Takács A. Highly Chemoselective One‐Step Synthesis of Novel
N
‐Substituted‐Pyrrolo[3,4‐b]quinoline‐1,3‐diones via Palladium‐Catalyzed Aminocarbonylation/Carbonylative Cyclisation Sequence. European J Org Chem 2023. [DOI: 10.1002/ejoc.202201374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Sami Chniti
- Department of General and Inorganic Chemistry Faculty of Sciences University of Pécs Ifjúság útja 6. 7624 Pécs Hungary
| | - László Kollár
- Department of General and Inorganic Chemistry Faculty of Sciences University of Pécs Ifjúság útja 6. 7624 Pécs Hungary
- János Szentágothai Research Centre University of Pécs Ifjúság útja 20. 7624 Pécs Hungary
- ELKH-PTE Research Group for Selective Chemical Syntheses Ifjúság útja 6. 7624 Pécs Hungary
| | - Attila Bényei
- Department of Pharmaceutical Chemistry University of Debrecen Egyetem tér 1. H-4032 Pécs Hungary
| | - Ágnes Dörnyei
- Department of Analytical and Environmental Chemistry Faculty of Sciences University of Pécs Ifjúság útja 6. 7624 Pécs Hungary
| | - Attila Takács
- Department of General and Inorganic Chemistry Faculty of Sciences University of Pécs Ifjúság útja 6. 7624 Pécs Hungary
- János Szentágothai Research Centre University of Pécs Ifjúság útja 20. 7624 Pécs Hungary
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10
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Cai BG, Li Q, Xuan J. Copper-catalyzed 2,3-dihydro-1,2,4-triazoles synthesis through [3+2]-cycloaddition of nitrile ylides with azodicarboxylates. GREEN SYNTHESIS AND CATALYSIS 2023. [DOI: 10.1016/j.gresc.2023.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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11
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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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12
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Mane KD, Bagwe SS, More SG, Suryavanshi G. Synthesis of 3‑alkyl and 1,3-Bis(alkyl)indolizine amides from α-bromohydroxamates. Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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13
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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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14
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Champetter P, Alahyen I, Taillier C, Brière J, Dalla V, Oudeyer S, Comesse S. Probing
N
‐Alkoxy Effects in Domino Reactions of α‐Bromoacetamide Derivatives Towards Functionalized γ‐Lactams. ChemistrySelect 2022. [DOI: 10.1002/slct.202203305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Ismail Alahyen
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM 76600 Le Havre France
| | | | | | - Vincent Dalla
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM 76600 Le Havre France
| | - Sylvain Oudeyer
- Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA 76000 Rouen France
| | - Sébastien Comesse
- Normandie Univ, UNILEHAVRE FR 3038 CNRS, URCOM 76600 Le Havre France
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15
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Bera T, Singh B, Gandon V, Saha J. Experimental and Theoretical Investigation of an Azaoxyallyl Cation‐Templated Intramolecular Aryl Amination Leading to Oxindole Derivatives. Chemistry 2022; 28:e202201208. [DOI: 10.1002/chem.202201208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Tishyasoumya Bera
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
| | - Bandana Singh
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO) CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM) CNRS UMR 9168, Ecole Polytechnique Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau cedex France
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry Centre of Biomedical Research (CBMR) SGPGIMS Campus. Raebareli Road Lucknow 226014 Uttar Pradesh India
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16
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Bera T, Singh B, Jana M, Saha J. Access to 3,3'-disubstituted peroxyoxindole derivatives and α-peroxyamides via azaoxyallyl cation-guided addition of hydroperoxides. Chem Commun (Camb) 2022; 58:7538-7541. [PMID: 35703384 DOI: 10.1039/d2cc02378d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a transition metal-free approach for access to 3,3'-disubstituted peroxyoxindole is disclosed, which harnesses a transient azaoxyallyl cation. This strategy is also applicable to the synthesis of structurally diverse α-peroxycarboxylic acid surrogates. The method exhibits good functional group tolerance and is suitable for generating a library of peroxy-containing compounds.
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Affiliation(s)
- Tishyasoumya Bera
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India. .,Department of Chemistry, University of Kalyani, Kalyani-741235, India
| | - Bandana Singh
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Manoranjan Jana
- Department of Chemistry, University of Kalyani, Kalyani-741235, India
| | - Jaideep Saha
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research (CBMR), SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
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17
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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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18
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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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19
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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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20
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Taily IM, Saha D, Banerjee P. Aza-Oxyallyl Cation Driven 3-Amido Oxetane Rearrangement to 2-Oxazolines: Access to Oxazoline Amide Ethers. J Org Chem 2022; 87:2155-2166. [PMID: 35129349 DOI: 10.1021/acs.joc.1c03108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we report a highly facile and unprecedented activation of 3-amido oxetanes to synthesize 2-oxazoline amide ethers using a transient electrophilic aza-oxyallyl cation as an activating as well as an alkylating agent under mild reaction conditions. The aza-oxyallyl cation driven intramolecular rearrangement of 3-amido oxetanes to 2-oxazolines is the hallmark of this transformation and is a new addition to the reactivity profile of aza-oxyallyl cations.
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Affiliation(s)
- Irshad Maajid Taily
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Debarshi Saha
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India
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21
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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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22
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Zhang L, Liu Y, Zhou Y. A Computational Study on Cycloaddition Reactions between Isatin Azomethine Imine and in situ Generated Azaoxyallyl Cation. ChemistrySelect 2022. [DOI: 10.1002/slct.202104059] [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 Zhang
- School of Science Tianjin Chengjian University Tianjin 300384 P. R. China
| | - Ying Liu
- School of Science Tianjin Chengjian University Tianjin 300384 P. R. China
| | - Yongzhu Zhou
- School of Science Tianjin Chengjian University Tianjin 300384 P. R. China
- School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P. R. China
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23
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Ma JT, Chen T, Chen XL, Zhou Y, Yu ZC, Zhuang SY, Alimu M, Wu YD, Xiang JC, Wu AX. One-step synthesis of azepino[3,4- b]indoles by cooperative aza-[4 + 3] cycloaddition from readily available feedstocks. Org Chem Front 2022. [DOI: 10.1039/d2qo00816e] [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
We demonstrate the feasibility of obtaining azepino[3,4-b]indoles by one-step synthesis from a four-component reaction system comprising readily available starting materials. This transformation affords a diverse range of azepino[3,4-b]indoles in a highly efficient manner.
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Affiliation(s)
- Jin-Tian Ma
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Ting Chen
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiang-Long Chen
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - You Zhou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Zhi-Cheng Yu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Shi-Yi Zhuang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Maierhaba Alimu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jia-Chen Xiang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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24
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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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25
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Zhou X, Zhang A, Zhang Q, Liu Q, Xuan J. Visible Light-Induced 4-Chromanones Synthesis: Radical Cascade Cyclization of α-Oxocarboxylic Acids with o-(Allyloxy)arylaldehydes Promoted by Phenyliodine(III) Diacetate. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202204005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Huang L, Yao Z, Huang G, Ao Y, Zhu B, Li S, Cui X. One‐Pot Synthesis of Fused Indolin‐3‐Ones via a [3+3] Cycloaddition Reaction. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100842] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lang Huang
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Zhenyu Yao
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Guanghua Huang
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Yaqi Ao
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Bin Zhu
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Sanshu Li
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
| | - Xiuling Cui
- Engineering Research Centre of Molecular Medicine of Ministry of Education, Key Laboratory of Fujian Molecular Medicine, Key Laboratory of Precision Medicine and Molecular Diagnosis of Fujian Universities, Key Laboratory of Xiamen Marine and Gene Drugs, School of Biomedical Sciences Huaqiao University Xiamen 361021 People's Republic of China
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27
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Lee CY, Kim S. Metal‐free Nucleophilic α‐Azidation of α‐Halohydroxamates with Azidotrimethylsilane. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100556] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chang Yoon Lee
- Department of Chemistry Kyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
| | - Sung‐Gon Kim
- Department of Chemistry Kyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
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28
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Sun Jang H, Kim SG. Asymmetric catalytic [3 + 3]-cycloaddition of γ-hydroxy-α,β-unsaturated ketones with azaoxyallyl cations. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Ghosh A, Dey R, Banerjee P. Relieving the stress together: annulation of two different strained rings towards the formation of biologically significant heterocyclic scaffolds. Chem Commun (Camb) 2021; 57:5359-5373. [PMID: 33969833 DOI: 10.1039/d1cc00998b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Small carbo- and heterocycles have become versatile building blocks owing to their intrinsic ring strain and ease of synthesis. However, the traditional approaches of heterocycle synthesis involved the combination of one strained-carbocycle or heterocycle with one unsaturated molecule. On the contrary, there is an exciting possibility of combining two different strained rings to furnish varieties of heterocycles, where one of the strained rings can act as a valuable alternative to the unsaturated molecule. These strategies are also useful to access multi-functionalized rings. Despite these distinctive synthetic benefits, this chemistry has not drawn considerable attention of the community. In this minireview, we explicitly choose this topic to reveal the unexplored possibilities with these different strained rings. This minireview provides comprehensive details with the mechanistic rationale about the reactivity of these pairs of small rings when they are allowed to react together in the presence of different Lewis acids. Subsequently, it will also open a new avenue for heterocycle synthesis.
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Affiliation(s)
- Asit Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Raghunath Dey
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab-140001, India.
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30
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Lee CY, Kwon YI, Jang HS, Lee S, Chun YL, Jung J, Kim S. Organocatalytic Enantioselective [4+3]‐Cycloadditions of Azaoxyallyl Cations with 2‐Aminophenyl Enones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100676] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chang Yoon Lee
- Department of Chemistry Kyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Yong Il Kwon
- Department of Chemistry Kyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Hyun Sun Jang
- Department of Chemistry Kyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Sumin Lee
- Department of Anatomy and Neurobiology, College of Medicine Kyung Hee University 26, Kyungheedae-ro, Dongdaemun-gu Seoul 02447 Republic of Korea
| | - Yoo Lim Chun
- Department of Anatomy and Neurobiology, College of Medicine Kyung Hee University 26, Kyungheedae-ro, Dongdaemun-gu Seoul 02447 Republic of Korea
| | - Junyang Jung
- Department of Anatomy and Neurobiology, College of Medicine Kyung Hee University 26, Kyungheedae-ro, Dongdaemun-gu Seoul 02447 Republic of Korea
| | - Sung‐Gon Kim
- Department of Chemistry Kyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
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31
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Sun X, Guo XQ, Chen LM, Kang TR. Synthesis, Characterization of Spirocyclic λ 3 -Iodanes and Their Application to Prepare 4,1-Benzoxazepine-2,5-diones and 1,3-Diynes. Chemistry 2021; 27:4312-4316. [PMID: 33326645 DOI: 10.1002/chem.202005124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/15/2020] [Indexed: 11/10/2022]
Abstract
Herein, a [3+2] cycloaddition of aza-oxyallylic cations with ethynylbenziodoxolones for synthesis of new λ3 -iodanes containing spirocyclic 4-oxazolidinone has been developed. This cyclic λ3 -iodanes display stability in air and excellent solubility in organic solvent. Using them as substrate, both the 4,1-benzoxazepine-2,5-diones and symmetrical 1,3-diynes derivatives were afforded in high yield under copper(I)-catalyzed conditions.
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Affiliation(s)
- Xu Sun
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China.,Collaborative Innovation Center of Tissue Repair Material of, Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong City, Sichuan, 637002, P. R. China
| | - Xiao-Qiang Guo
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China
| | - Lian-Mei Chen
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China
| | - Tai-Ran Kang
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China.,Collaborative Innovation Center of Tissue Repair Material of, Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong City, Sichuan, 637002, P. R. China
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32
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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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33
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Wang CC, Qu YL, Liu XH, Ma ZW, Yang B, Liu ZJ, Chen XP, Chen YJ. Synthesis of Five-Membered Cyclic Guanidines via Cascade [3 + 2] Cycloaddition of α-Haloamides with Organo-cyanamides. J Org Chem 2021; 86:3546-3554. [PMID: 33538590 DOI: 10.1021/acs.joc.0c02932] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The convenient preparation of N2-unprotected five-membered cyclic guanidines was achieved through a cascade [3 + 2] cycloaddition between organo-cyanamides and α-haloamides under mild conditions in good to excellent yields (up to 99%). The corresponding cyclic guanidines could be easily transformed into hydantoins via hydrolysis.
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Affiliation(s)
- Chuan-Chuan Wang
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China.,College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Ya-Li Qu
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Xue-Hua Liu
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Zhi-Wei Ma
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Bo Yang
- College of Chemistry, Zhengzhou University, 100 Science Avenue, Zhengzhou 450001, Henan, China
| | - Zhi-Jing Liu
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, China
| | - Xiao-Pei Chen
- Faculty of Science, Henan University of Animal Husbandry and Economy, No. 146 Yingcai Street, Zhengzhou 450044, Henan, 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 450001, Henan, China
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34
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Yoon Lee C, Kim S. Highly Efficient DMSO‐Promoted α‐Hydrolysis of α‐Halohydroxamates under Mild Conditions. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chang Yoon Lee
- Department of Chemistry Kyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Sung‐Gon Kim
- Department of Chemistry Kyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
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35
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Chen J, Liang E, Shi J, Wu Y, Wen K, Yao X, Tang X. Metal-free synthesis of 1,4-benzodiazepines and quinazolinones from hexafluoroisopropyl 2-aminobenzoates at room temperature. RSC Adv 2021; 11:4966-4970. [PMID: 35424458 PMCID: PMC8694548 DOI: 10.1039/d1ra00324k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 01/20/2021] [Indexed: 11/29/2022] Open
Abstract
Herein, we describe the novel reactivity of hexafluoroisopropyl 2-aminobenzoates. The metal-free synthesis of 1,4-benzodiazepines and quinazolinones from hexafluoroisopropyl 2-aminobenzoates has been developed at room temperature. These procedures feature good functional group tolerance, mild reaction conditions, and excellent yields. The newly formed products can readily be converted to other useful N-heterocycles. Moreover, the products and their derivatives showed potent anticancer activities in vitro by MTT assay. A metal-free synthesis of 1,4-benzodiazepines and quinazolinones from hexafluoroisopropyl 2-aminobenzoates has been developed at room temperature.![]()
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Affiliation(s)
- Jiewen Chen
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - En Liang
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Jie Shi
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Yinrong Wu
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Kangmei Wen
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Xingang Yao
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening
- School of Pharmaceutical Sciences
- Southern Medical University
- Guangzhou 510515
- P. R. China
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36
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Liu J, Xie Y, Yang Q, Huang N, Wang L. Ugi Four-Component Reaction Based on the in situ Capture of Amines and Subsequent Modification Tandem Cyclization Reaction: "One-Pot" Synthesis of Six- and Seven-Membered Heterocycles. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202012040] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Sun J, Wang T, Zhu X, Xu W, Cheng B, Zhai H. Synthesis of thiazolidin-4-ones from α-enolic dithioesters and α-halohydroxamates. NEW J CHEM 2021. [DOI: 10.1039/d1nj01970h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A facile access to thiazolidin-4-ones from α-enolic dithioesters and α-halohydroxamates in situ derived active 1,3-dipolar aza-oxyallyl cations was achieved under mild conditions.
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Affiliation(s)
- Jianguo Sun
- State Key Laboratory of Chemical Oncogenomics
- Shenzhen Engineering Laboratory of Nano Drug Slow-Release
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
| | - Taimin Wang
- Institute of Marine Biomedicine
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Xuecheng Zhu
- Institute of Marine Biomedicine
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Wei Xu
- Institute of Marine Biomedicine
- Shenzhen Polytechnic
- Shenzhen 518055
- China
| | - Bin Cheng
- Institute of Marine Biomedicine
- Shenzhen Polytechnic
- Shenzhen 518055
- China
- State Key Laboratory of Applied Organic Chemistry
| | - Hongbin Zhai
- State Key Laboratory of Chemical Oncogenomics
- Shenzhen Engineering Laboratory of Nano Drug Slow-Release
- Peking University Shenzhen Graduate School
- Shenzhen 518055
- China
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38
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Wang KK, Li YL, Lv YJ, Shen RH, Zhao W, Chen R. 1,3-Dipolar cycloaddition reactions of azomethine ylides with seven-membered cyclic N-sulfony imines access to polycyclic sulfonamides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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39
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Organic Azides: Versatile Synthons in Transition Metal‐Catalyzed C(
sp
2
)−H Amination/Annulation for N‐Heterocycle Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001168] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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40
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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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41
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Luo Y, Chen CH, Zhu F, Mo DL. Synthesis of α-aminooxy amides through [3 + 3] cycloaddition and Sc(OTf) 3-catalyzed double C-N bond cleavage in a one-pot reaction. Org Biomol Chem 2020; 18:8209-8218. [PMID: 33043956 DOI: 10.1039/d0ob01788d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Various α-aminooxy amides bearing a quaternary carbon at the α-position were prepared in good to excellent yields under mild reaction conditions from N-vinyl nitrones and α-bromohydroxamates. The N-vinyl nitrones tolerate a wide range of N-vinyl fluorenone nitrones and N-vinyl isatin nitrones. Mechanistic studies show that the reaction initially proceeds through [3 + 3] cycloaddition between N-vinyl nitrones and aza-oxyallyl cations generated from α-bromohydroxamates to afford six-membered N,O-heterocycles, followed by double C-N bond cleavage in the presence of the Sc(OTf)3 catalyst. A selective N-O bond cleavage of the obtained α-aminooxy amides is also realized under Fe/NH4Cl conditions. Furthermore, gram-scalable preparations of α-aminooxy amides are easily achieved.
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Affiliation(s)
- Yan Luo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China.
| | - Chun-Hua Chen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China.
| | - Fan Zhu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China.
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China.
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42
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Fang QY, Jin HS, Wang RB, Zhao LM. A Role for Isatin Azomethine Imines as a Dipolarophile in Cycloaddition Reactions. Org Lett 2020; 22:7358-7362. [PMID: 32875804 DOI: 10.1021/acs.orglett.0c02705] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An unusual [2 + 3] cycloaddition of isatin azomethine imines (AIs) and in situ generated azaoxyallyl cations has been developed. It is the first example where AIs serve as the [C,O] 2-atom synthon in organic synthesis. This work not only reveals a new role of isatin AIs in cycloaddition reaction but also provides an efficient access to unprecedented spiroheterocycle compounds.
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Affiliation(s)
- Qing-Yun Fang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Hai-Shan Jin
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China
| | - Ru-Bing Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Li-Ming Zhao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, Jiangsu, China.,State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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43
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Transition-metal-free synthesis of 1,4-benzoxazepines via [4+3]-cycloaddition of para-quinone methides with azaoxyallyl cations. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9832-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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44
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Cheng B, Zhang X, Zhai S, He Y, Tao Q, Li H, Wei J, Sun H, Wang T, Zhai H. Synthesis of 1,2,3,4‐Tetrahydrobenzofuro[3,2‐
d
]pyrimidines via [4+2] Annulation Reaction of 1,3,5‐Triazinanes and Aurone‐Derived α,β‐Unsaturated Imines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000713] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bin Cheng
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Xinping Zhang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Shengxian Zhai
- College of Chemistry and Environmental Engineering Anyang Institute of Technology Anyang 455000 People's Republic of China
| | - Yixuan He
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Qingqing Tao
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
| | - Hui Li
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 People's Republic of China
| | - Jian Wei
- State Key Laboratory of Chemical Oncogenomics Shenzhen Engineering Laboratory of Nano Drug Slow-Release Peking University Shenzhen Graduate School Shenzhen 518055 People's Republic of China
| | - Haiyan Sun
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
| | - Taimin Wang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
| | - Hongbin Zhai
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials Shenzhen Polytechnic Shenzhen 518055 People's Republic of China
- State Key Laboratory of Chemical Oncogenomics Shenzhen Engineering Laboratory of Nano Drug Slow-Release Peking University Shenzhen Graduate School Shenzhen 518055 People's Republic of China
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45
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Jang HS, Kwon YI, Kim S. Facile Synthesis of Functionalized 1,4‐Benzodiazepine‐3‐One‐5‐Acetates via [4 + 3]‐Annulation of Azaoxyallyl Cations With 2‐Aminophenyl α,β‐Unsaturated Esters. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12060] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hyun Sun Jang
- Department of ChemistryKyonggi University Suwon 16227 Republic of Korea
| | - Yong Il Kwon
- Department of ChemistryKyonggi University Suwon 16227 Republic of Korea
| | - Sung‐Gon Kim
- Department of ChemistryKyonggi University Suwon 16227 Republic of Korea
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46
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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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47
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Kim E, Lee CY, Kim S. HFIP‐Mediated Decarboxylative [4+3]‐Annulation of Azaoxyallyl Cations with Isatoic Anhydride. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000439] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Eunjin Kim
- Department of ChemistryKyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Chang Yoon Lee
- Department of ChemistryKyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
| | - Sung‐Gon Kim
- Department of ChemistryKyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon 16227 Republic of Korea
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48
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Son EC, Lee J, Kim SG. Base-Promoted Cycloaddition of γ-Hydroxy- and δ-Hydroxy-α,β-Unsaturated Carbonyls with Azaoxyallyl Cations: Rapid Synthesis of N,O
-Heterocycles. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000368] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Eun Chae Son
- Department of Chemistry; Kyonggi University; 154-42 Gwanggyosan-ro 16227 Yeongtong-gu Suwon Republic of Korea
| | - Jiseon Lee
- Department of Chemistry; Kyonggi University; 154-42 Gwanggyosan-ro 16227 Yeongtong-gu Suwon Republic of Korea
| | - Sung-Gon Kim
- Department of Chemistry; Kyonggi University; 154-42 Gwanggyosan-ro 16227 Yeongtong-gu Suwon Republic of Korea
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49
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Ansari AJ, Yadav A, Mukherjee A, Sathish E, Nagesh K, Singh R. Metal free amination of congested and functionalized alkyl bromides at room temperature. Chem Commun (Camb) 2020; 56:4804-4807. [PMID: 32227034 DOI: 10.1039/d0cc00826e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a highly facile and unprecedented approach to synthesize congested N-(hetero)aryl amines en route to α-amino acid amides using α-bromoamides as alkylating agents under mild reaction conditions (room temperature). The involvement of aza-oxyallyl cations as alkylating agents is the hallmark of this reaction. The method was readily adapted for the rapid synthesis of coveted 1,4-benzodiazepine-3,5-diones.
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Affiliation(s)
- Arshad J Ansari
- School of Chemical Sciences and Pharmacy, Central University of Rajasthan, Ajmer, Rajasthan 305817, India.
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50
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Chae Son E, Kim S. Metal‐free Nucleophilic Alkoxylation of in Situ‐Generated Azaoxyallyl Cations: Synthesis of Hindered Dialkyl Ether Derivatives. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Eun Chae Son
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
| | - Sung‐Gon Kim
- Department of ChemistryKyonggi University 154-42 Gwanggyosan-ro, Yeongtong-gu Suwon 16227 (Republic of Korea
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