1
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Mahanti M, Bhaskar Pal K, Wallentin CJ, Galan MC. Hypervalent Iodine Compounds in Carbohydrate Chemistry: Glycosylation, Functionalization and Oxidation. Chemistry 2024; 30:e202400087. [PMID: 38349955 DOI: 10.1002/chem.202400087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 02/15/2024]
Abstract
This mini review article provides an overview on the use of hypervalent iodine compounds (HICs) in carbohydrate synthesis, focusing on their chemistry and recent applications. HICs are similar to transition metals in their reactivity but have the added benefit of being environmentally benign, and are therefore commonly used as selective oxidants and eco-friendly reagents in organic synthesis. Herein, we summarize various synthetic uses of hypervalent iodine reagents in reactions such as glycosylation, oxidations, functionalization, and C-C bond-forming reactions. The goal of this review is to illustrate the advantages and versatility of using HICs as an environmentally sustainable alternative to heavy metals in carbohydrate chemistry.
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Affiliation(s)
- Mukul Mahanti
- School of Chemistry, University of Bristol Cantock's Close, BS81TS, Bristol, United Kingdom
| | - Kumar Bhaskar Pal
- Department of Chemistry and Molecular Biology, University of Gothenburg, Medicinaregatan 7B, 413 90, Gothenburg, Sweden
| | - Carl Johan Wallentin
- Department of Chemistry and Molecular Biology, University of Gothenburg, Medicinaregatan 7B, 413 90, Gothenburg, Sweden
| | - M Carmen Galan
- School of Chemistry, University of Bristol Cantock's Close, BS81TS, Bristol, United Kingdom
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2
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Ge JC, Wang Y, Guo FW, Kong X, Hu F, Li SS. Dearomatization of 3-Aminophenols for Synthesis of Spiro[chromane-3,1'-cyclohexane]-2',4'-dien-6'-ones via Hydride Transfer Strategy-Enabled [5+1] Annulations. Molecules 2024; 29:1012. [PMID: 38474524 DOI: 10.3390/molecules29051012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024] Open
Abstract
The Sc(OTf)3-catalyzed dearomative [5+1] annulations between readily available 3-aminophenols and O-alkyl ortho-oxybenzaldehydes were developed for synthesis of spiro[chromane-3,1'-cyclohexane]-2',4'-dien-6'-ones. The "two-birds-with-one-stone" strategy was disclosed by the dearomatization of phenols and direct α-C(sp3)-H bond functionalization of oxygen through cascade condensation/[1,5]-hydride transfer/dearomative-cyclization process. In addition, the antifungal activity assay and derivatizations of products were conducted to further enrich the utility of the structure.
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Affiliation(s)
- Jia-Cheng Ge
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
- Hailir Pesticides and Chemicals Group Co., Ltd., Qingdao 266109, China
| | - Yufeng Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Feng-Wei Guo
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiangyun Kong
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
- Hailir Pesticides and Chemicals Group Co., Ltd., Qingdao 266109, China
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3
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Zhao D, Liu M, Bai L, Liu J, Luan X. Rapid Assembly of Spironaphthalenones by Dearomative Spiroannulation of Naphthols and Dielectrophiles. J Org Chem 2023; 88:15913-15924. [PMID: 37924300 DOI: 10.1021/acs.joc.3c02067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
A novel [4 + 1] and [5 + 1] dearomative spiroannulation has been developed by the use of commercial naphthols and phenols with dielectrophiles. Various spirocycles, including spiro[4.5] and spiro[5.5] have been constructed successfully by employing four-atom or five-atom dielectrophilic synthons. This transformation was realized through a sequence of site-selective C-alkylation/dearomative spiroannulation. Moreover, the potential application of this method was exemplified by several further transformation.
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Affiliation(s)
- Dongwei Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Mengtian Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Lu Bai
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Jingjing Liu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
| | - Xinjun Luan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, China
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4
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Liu Y, Dietl MC, Heckershoff R, Han C, Shi H, Rudolph M, Rominger F, Caligiuri I, Asif K, Adeel M, Scattolin T, Hashmi ASK. Gold-Catalyzed Formal [4+2] Cycloaddition as Access to Antitumor-Active Spirocyclic Oxindoles from Alkynes and Isatin-Derived Ketimines. Angew Chem Int Ed Engl 2023; 62:e202304672. [PMID: 37204285 DOI: 10.1002/anie.202304672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/17/2023] [Accepted: 05/17/2023] [Indexed: 05/20/2023]
Abstract
Due to its excellent bioactivity profile, which is increasingly utilized in pharmaceutical and synthetic chemistry, spirooxindole is an important core scaffold. We herein describe an efficient method for the construction of highly functionalized new spirooxindolocarbamates via a gold-catalyzed cycloaddition reaction of terminal alkynes or ynamides with isatin-derived ketimines. This protocol has a good functional group compatibility, uses readily available starting materials, mild reaction conditions, low catalyst loadings and no additives. It enables the transformation of various functionalized alkyne groups into cyclic carbamates. Gram-scale synthesis was achieved and DFT calculations verify the feasibility of the mechanistic proposal. Some of the target products exhibit good to excellent antiproliferative activity on human tumor cell lines. In addition, one of the most active compounds displayed a remarkable selectivity towards tumor cells over normal ones.
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Affiliation(s)
- Yaowen Liu
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Martin C Dietl
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Robin Heckershoff
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Chunyu Han
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Hongwei Shi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Isabella Caligiuri
- Pathology Unit, Department of Molecular Biology and Translational Research, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, via Franco Gallini 2, 33081, Aviano, Italy
| | - Kanwal Asif
- Pathology Unit, Department of Molecular Biology and Translational Research, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, via Franco Gallini 2, 33081, Aviano, Italy
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari, Campus Scientifico Via Torino 155, 30174, Venezia-Mestre, Italy
| | - Muhammad Adeel
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari, Campus Scientifico Via Torino 155, 30174, Venezia-Mestre, Italy
| | - Thomas Scattolin
- Dipartimento di Scienze Chimiche, Università degli studi di Padova, via Marzolo 1, 35131, Padova, Italy
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
- Chemistry Department, Faculty of Science, King Abdulaziz University (KAU), 21589, Jeddah, Saudi Arabia
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5
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Mao HL, Wang YX, Wang X, Wang HY, Hao WJ, Jiang B. Pd-Catalyzed Asymmetric Annulative Dearomatization of Phenols for Regio- and Enantioselective Synthesis of Spirocyclohexadienones. Org Lett 2023; 25:5963-5968. [PMID: 37540111 DOI: 10.1021/acs.orglett.3c02051] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A palladium-catalyzed asymmetric annulative dearomatization of phenols with butene dicarbonate is reported, enabling twofold decarboxylative allylation to regioselectively produce a range of spirocyclohexadienones with 29-95% yields and 74-99% ee. A catalytic dearomative formal [4 + 2] cyclization of 1,1'-biphenyl-2,4'-diols delivered spiro[chromane-4,1'-cyclohexane]-2',5'-dien-4'-ones with high enantioselectivity, whereas enantioenriched spiro[cyclohexane-1,4'-quinoline]-2,5-dien-4-ones were generated starting from 2'-amino-[1,1'-biphenyl]-4-ols as 1,4-dinucleophiles.
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Affiliation(s)
- Hui-Lin Mao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
| | - Yu-Xin Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
| | - Xue Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
| | - Hai-Ying Wang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
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6
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Ye Z, Liu W, Gu H, Yang X. Enantioselective Dearomatization of Substituted Phenols via Organocatalyzed Electrophilic Amination. Org Lett 2023; 25:5838-5843. [PMID: 37523610 DOI: 10.1021/acs.orglett.3c02100] [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
Highly efficient and stereoselective dearomatization of substituted phenols was achieved via chiral phosphoric acid-catalyzed electrophilic para-amination with commercially available azodicarboxylates. This protocol readily afforded a series of chiral 2,5-cyclohexadienones bearing 4-aza-quaternary stereocenters with excellent yields and enantioselectivities (≤99% yield and >99% ee). Easy scale-up of this reaction to a gram scale and diverse derivatizations of the chiral products into α-tertiary amines and α-tertiary heterocycles derivatives well demonstrated the potential of this method.
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Affiliation(s)
- Zidan Ye
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Wei Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Huanchao Gu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xiaoyu Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
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7
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Sun M, Chen J, Ding Z. Synthesis of Oxazolidines and Dihydroxazines via Cyclization of α-Aminated Ketones. J Org Chem 2023. [PMID: 37470361 DOI: 10.1021/acs.joc.3c00690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
A new approach to oxazolidines and dihydroxazines was developed by regioselective cyclization of α-aminated ketones under transition metal-free conditions. Oxazolidine derivatives were generated in the presence of chloro benziodoxole and TFA, while dihydroxazines were formed without a hypervalent iodine reagent. The reaction was performed under room temperature and gave the products in good to excellent yields.
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Affiliation(s)
- Mingze Sun
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Jingjing Chen
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Zhenhua Ding
- Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
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8
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Bera N, Lenka BS, König B, Sarkar D. Riboflavin Photocatalyzed Dearomative Spiro-Etherification of Naphthols. J Org Chem 2023. [PMID: 37356110 DOI: 10.1021/acs.joc.2c03037] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
The dearomative spiro-etherification of naphthols is achieved using catalytic amounts of riboflavin tetracetate (RFTA) as a photosensitizer and molecular oxygen as a terminal oxidizing agent under blue light (440 nm) irradiation in the presence of acid. The presence of acid increases the photooxidation power of RFTA and facilitates the dearomatization reaction.
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Affiliation(s)
- Nabakumar Bera
- Department of Chemistry, National Institute of Technology, Rourkela, Rourkela 769008, India
| | - Bhabani Sankar Lenka
- Department of Chemistry, Indian Institute of Technology, Indore, Madhya Pradesh 453552, India
| | - Burkhard König
- Department of Chemistry and Pharmazie, University of Regensburg, 93040 Regensburg, Germany
| | - Debayan Sarkar
- Department of Chemistry, Indian Institute of Technology, Indore, Madhya Pradesh 453552, India
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9
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Zhang L, Hu F, Shen L, Gao L, Yang Y, Pan Z, Xia C. Redox-Neutral Intramolecular Dearomative Spirocyclization of Phenols Induced by Visible Light. Org Lett 2023; 25:3168-3172. [PMID: 37126087 DOI: 10.1021/acs.orglett.3c01257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Described herein is a redox-neutral intramolecular dearomative spirocyclization induced by visible light. The photochemical cyclization was catalyzed by a phenolate anion-derived photocatalyst and delivered the spirocyclohexadienone. Mechanistic experiments revealed that the aryl halide was reduced to aryl radical via the single-electron transfer (SET) process under visible light irradiation. The electrophilic addition of an aryl radical with the phenolate anion moiety gave a radical anion intermediate, which recycled the photocatalyst by a second SET process.
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Affiliation(s)
- Linlin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
| | - Fengchi Hu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
| | - Lei Shen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
| | - Lijuan Gao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
| | - Yunhong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
| | - Zhiqiang Pan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Pharmacy, Yunnan University, Kunming 650500, China
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10
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Zheng H, Cai L, Pan M, Uyanik M, Ishihara K, Xue XS. Catalyst-Substrate Helical Character Matching Determines the Enantioselectivity in the Ishihara-Type Iodoarenes Catalyzed Asymmetric Kita-Dearomative Spirolactonization. J Am Chem Soc 2023; 145:7301-7312. [PMID: 36940192 DOI: 10.1021/jacs.2c13295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
Catalyst design has traditionally focused on rigid structural elements to prevent conformational flexibility. Ishihara's elegant design of conformationally flexible C2-symmetric iodoarenes, a new class of privileged organocatalysts, for the catalytic asymmetric dearomatization (CADA) of naphthols is a notable exception. Despite the widespread use of the Ishihara catalysts for CADAs, the reaction mechanism remains the subject of debate, and the mode of asymmetric induction has not been well established. Here, we report an in-depth computational investigation of three possible mechanisms in the literature. Our results, however, reveal that this reaction is best rationalized by a fourth mechanism called "proton-transfer-coupled-dearomatization (PTCD)", which is predicted to be strongly favored over other competing pathways. The PTCD mechanism is consistent with a control experiment and further validated by applying it to rationalize the enantioselectivities. Oxidation of the flexible I(I) catalyst to catalytic active I(III) species induces a defined C2-symmetric helical chiral environment with a delicate balance between flexibility and rigidity. A match/mismatch effect between the active catalyst and the substrate's helical shape in the dearomatization transition states was observed. The helical shape match allows the active catalyst to adapt its conformation to maximize attractive noncovalent interactions, including I(III)···O halogen bond, N-H···O hydrogen bond, and π···π stacking, to stabilize the favored transition state. A stereochemical model capable of rationalizing the effect of catalyst structural variation on the enantioselectivities is developed. The present study enriches our understanding of how flexible catalysts achieve high stereoinduction and may serve as an inspiration for the future exploration of conformational flexibility for new catalyst designs.
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Affiliation(s)
- Hanliang Zheng
- Department of Chemistry, Zhejiang Normal University, 688 Yingbin Road, Jinhua 321004, China
| | - Liu Cai
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ming Pan
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Muhammet Uyanik
- Graduate School of Engineering, Nagoya University Furocho, Chikusaku, Nagoya 464-8603, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University Furocho, Chikusaku, Nagoya 464-8603, Japan
| | - Xiao-Song Xue
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.,School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, P. R. China
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11
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Bai L, Wang L, Zhu H, Pang S, Li S, Lv J, Zhang H, Yang D. Development of ProPhenol/Ti(IV) Catalyst for Asymmetric Hydroxylative Dearomatization of Naphthols. Org Lett 2023; 25:867-871. [PMID: 36723617 DOI: 10.1021/acs.orglett.3c00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
By development of ProPhenol/Ti(IV) catalysts, a catalytic enantioselective hydroxylative dearomatization of naphthols is achieved by using TBHP as a simple oxidative reagent. The side coordinative chain equipped on the C1-position of β-naphthols plays an important role for initiating this asymmetric hydroxylative reaction, which might be a result of the proper cocoordination effects to the titanium center in the catalyst. A reasonable catalytic cycle is proposed, the catalytic system is applied to a reasonable range of this type of phenolic compound, and related concise transformations are carried out.
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Affiliation(s)
- Lutao Bai
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Linqing Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Haiyong Zhu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Shiming Pang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Shixin Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Jiaming Lv
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Hailong Zhang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
| | - Dongxu Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Drug Design & Synthesis, School of Basic Medical Sciences, Research Unit of Peptide Science, Chinese Academy of Medical Sciences, 2019RU066, Lanzhou University, Lanzhou 730000, China
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12
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Achiral organoiodine-functionalized helical polyisocyanides for multiple asymmetric dearomative oxidations. Nat Commun 2023; 14:566. [PMID: 36732532 PMCID: PMC9894859 DOI: 10.1038/s41467-023-36327-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 01/24/2023] [Indexed: 02/04/2023] Open
Abstract
Immobilizing organocatalyst onto helical polymers not only facilitates the catalyst recycling from homogeneous reactions, but also boosts enantioselectivity. In this work, achiral organoiodine-functionalized single left- and right-handed helical polyisocyanides were prepared from the same monomers, which catalyzed three asymmetric oxidations gave the desired products in high yields and excellent enantioselectivity. The enantiomeric excess of the target products was up to 95%. Remarkably, the enantioselectivity can be switched by reversing the helicity of the polymer backbone. The polymer catalysts can be facilely recovered and recycled in different asymmetric oxidations with maintained excellent activity and enantioselectivity.
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13
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Cao J, Ma Y, Hu L, Xia W, Zhang X, Xiong Y. Polyhalogenation-Facilitated Spirolactonization at the meta-Position of Phenols. J Org Chem 2023; 88:1075-1084. [PMID: 36598128 DOI: 10.1021/acs.joc.2c02527] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel dearomative spirolactonization/polyhalogenation of phenols that employs hypervalent iodine PhICl2 (iodobenzene dichloride) as both an oxidant and chlorine source with an indispensable base, or only using NBS (N-bromosuccinimide) without any additives, is presented. Halide participations are a vital factor in the cascade reaction of 3'-hydroxy-[1,1'-biphenyl]-2-carboxylic acids with good selectivities and reactivities and induced the rapid constructions of multiple C-halogen bonds and directional C═O bonds in a one-step operation under mild conditions. In gaining a good understanding of the mechanism, the increase in number of bromine atoms was inferred rationally from the spirolactonization process, assisted by DFT calculations and high-resolution mass spectrometry. Mechanistic experiments suggest that the formation of a stable carbocation intermediate plays a great role in the migration of oxygen to spirolactonization.
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Affiliation(s)
- Jiaqi Cao
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - Youcai Ma
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - Liangzhen Hu
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - Wen Xia
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - Xiaohui Zhang
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China
| | - Yan Xiong
- School of Chemistry and Chemical Engineering, and Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China.,School of Chemical and Environmental Engineering, and Collaborative Innovation Center for High Value Transformation of Coal Chemical Process By-products, Xinjiang Institute of Engineering, Xinjiang 830091, China
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14
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Ito T, Harada S, Homma H, Okabe A, Nemoto T. Mechanistic Investigation on Dearomative Spirocyclization of Arenes with α-Diazoamide under Boron Catalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Tsubasa Ito
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Haruka Homma
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Ayaka Okabe
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
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15
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Kraszewski K, Tomczyk I, Kalek M. Intermolecular enantioselective dearomatizing para-methoxylation of phenols using 2-iodoresorcinol/lactamide catalysts. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Lee HJ, Choi ES, Maruoka K. Development of a catalytic ester activation protocol for the efficient formation of amide bonds using an Ar‐I/HF•pyridine/mCPBA system. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hyo-Jun Lee
- Kunsan National University Department of Chemistry KOREA, REPUBLIC OF
| | - Eun-Sol Choi
- Kunsan National University Department of Chemistry KOREA, REPUBLIC OF
| | - Keiji Maruoka
- Kyoto University Graduate School of Pharmaceutical Sciences Sakyo 606-8501 Kyoto JAPAN
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17
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Synthesis of optical active tetramethyl-1,1′-spirobiindane-based iodoarenes and evaluation of their use as axially chiral organocatalysts. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Ravindar L, Hasbullah SA, Hassan NI, Qin HL. Cross‐Coupling of C‐H and N‐H Bonds: a Hydrogen Evolution Strategy for the Construction of C‐N Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200596] [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)
- Lekkala Ravindar
- Universiti Kebangsaan Malaysia Fakulti Teknologi dan Sains Maklumat Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Siti Aishah Hasbullah
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Nurul Izzaty Hassan
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Hua-Li Qin
- Wuhan University of Technology School of Chemistry 430070 Hubei CHINA
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19
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Chen Y, Gu Y, Meng H, Shao Q, Xu Z, Bao W, Gu Y, Xue X, Zhao Y. Metal‐Free C−H Functionalization via Diaryliodonium Salts with a Chemically Robust Dummy Ligand. Angew Chem Int Ed Engl 2022; 61:e202201240. [DOI: 10.1002/anie.202201240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Yixuan Chen
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Yuefei Gu
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Huan Meng
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Qianzhen Shao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Zhenchuang Xu
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Wenjing Bao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Yucheng Gu
- Syngenta Jealott's Hill International Research Centre Bracknell, Berkshire RG42 6EY UK
| | - Xiao‐Song Xue
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Yanchuan Zhao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
- Key Laboratory of Energy Regulation Materials Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
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20
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Khan N, Itaya K, Wirth T. Chiral Iodotriptycenes: Synthesis and Catalytic Applications. Chemistry 2022; 11:e202200145. [PMID: 35822927 PMCID: PMC9278095 DOI: 10.1002/open.202200145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 06/27/2022] [Indexed: 02/05/2023]
Abstract
New iodotriptycenes, including some chiral derivatives, have been synthesised, and their catalytic potential towards oxidative transformations has been investigated. The enantioselectivities observed in the products using chiral iodotriptycene catalysts are low, probably owing to the large distances between the coordinating groups and the iodine moieties in these compounds.
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Affiliation(s)
- Nasim Khan
- School of Chemistry, Cardiff University, Park Place, Main Building, CF10 3AT, Cardiff, UK
| | - Katsunori Itaya
- School of Chemistry, Cardiff University, Park Place, Main Building, CF10 3AT, Cardiff, UK
| | - Thomas Wirth
- School of Chemistry, Cardiff University, Park Place, Main Building, CF10 3AT, Cardiff, UK
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21
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Chu WD, Liang TT, Ni H, Dong ZH, Shao Z, Liu Y, He CY, Bai R, Liu QZ. Palladium-Catalyzed Intermolecular Asymmetric Dearomative Annulation of Phenols with Vinyl Cyclopropanes. Org Lett 2022; 24:4865-4870. [PMID: 35775729 DOI: 10.1021/acs.orglett.2c01594] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we report the Pd(0)-catalyzed intermolecular asymmetric dearomative [3 + 2] annulation of phenols with vinyl cyclopropanes via in situ generated ortho-quinone methide intermediates. A series of highly functionalized spiro-[5,6] bicycles which bear three contiguous stereogenic centers including one all-carbon quaternary were obtained with excellent stereoselectivities. Density functional theory (DFT) calculations indicate that the reactions were controlled by thermodynamics.
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Affiliation(s)
- Wen-Dao Chu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, No. 1, Shida Road, Nanchong 637002, P. R. China.,Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan Provincial Center for Research & Development of Natural Products, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming 650091, P. R. China
| | - Tian-Tian Liang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, No. 1, Shida Road, Nanchong 637002, P. R. China
| | - Hao Ni
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, P. R. China
| | - Zhi-Hong Dong
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, No. 1, Shida Road, Nanchong 637002, P. R. China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan Provincial Center for Research & Development of Natural Products, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming 650091, P. R. China
| | - Yong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, No. 1, Shida Road, Nanchong 637002, P. R. China
| | - Cheng-Yu He
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, No. 1, Shida Road, Nanchong 637002, P. R. China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry, Chongqing University, Chongqing 401331, P. R. China
| | - Quan-Zhong Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, No. 1, Shida Road, Nanchong 637002, P. R. China
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22
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Chen Y, Gu Y, Meng H, Shao Q, Xu Z, Bao W, Gu Y, Xue X, Zhao Y. Metal‐Free C−H Functionalization via Diaryliodonium Salts with a Chemically Robust Dummy Ligand. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yixuan Chen
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Yuefei Gu
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Huan Meng
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Qianzhen Shao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Zhenchuang Xu
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Wenjing Bao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Yucheng Gu
- Syngenta Jealott's Hill International Research Centre Bracknell, Berkshire RG42 6EY UK
| | - Xiao‐Song Xue
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
| | - Yanchuan Zhao
- Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
- Key Laboratory of Energy Regulation Materials Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 China
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23
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Zhang N, Ye Y, Bai L, Liu J, Wang H, Luan X. Transition metal-free dearomatization of halonaphthols with C(sp3)-electrophiles. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.10.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Roy M, Nath AK, Pal I, Dey SG. Second Sphere Interactions in Amyloidogenic Diseases. Chem Rev 2022; 122:12132-12206. [PMID: 35471949 DOI: 10.1021/acs.chemrev.1c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amyloids are protein aggregates bearing a highly ordered cross β structural motif, which may be functional but are mostly pathogenic. Their formation, deposition in tissues and consequent organ dysfunction is the central event in amyloidogenic diseases. Such protein aggregation may be brought about by conformational changes, and much attention has been directed toward factors like metal binding, post-translational modifications, mutations of protein etc., which eventually affect the reactivity and cytotoxicity of the associated proteins. Over the past decade, a global effort from different groups working on these misfolded/unfolded proteins/peptides has revealed that the amino acid residues in the second coordination sphere of the active sites of amyloidogenic proteins/peptides cause changes in H-bonding pattern or protein-protein interactions, which dramatically alter the structure and reactivity of these proteins/peptides. These second sphere effects not only determine the binding of transition metals and cofactors, which define the pathology of some of these diseases, but also change the mechanism of redox reactions catalyzed by these proteins/peptides and form the basis of oxidative damage associated with these amyloidogenic diseases. The present review seeks to discuss such second sphere modifications and their ramifications in the etiopathology of some representative amyloidogenic diseases like Alzheimer's disease (AD), type 2 diabetes mellitus (T2Dm), Parkinson's disease (PD), Huntington's disease (HD), and prion diseases.
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Affiliation(s)
- Madhuparna Roy
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Arnab Kumar Nath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Ishita Pal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Somdatta Ghosh Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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25
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Wang Y, Sun YY, Cui YM, Yu YX, Wu ZG. Construction of Benzimidazolone Derivatives via Aryl Iodide Catalyzed Intramolecular Oxidative C-H Amination. J Org Chem 2022; 87:3234-3241. [PMID: 35170306 DOI: 10.1021/acs.joc.1c02929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The first aryl iodide catalyzed intramolecular C-H amination of phenylurea has been disclosed for high-efficiency synthesis of benzimidazolone derivatives in excellent yields (up to 97%) by an operationally simple one-step organocatalytic oxidative process. Fluorinated protic alcohols can efficiently accelerate the conversion of this transformation. The straightforward method has good functional group tolerance and can be performed with an inexpensive and readily accessible catalyst with high proficiency.
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Affiliation(s)
- Yang Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Yuan-Yuan Sun
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Yi-Mo Cui
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Ying-Xin Yu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Zheng-Guang Wu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
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26
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Huang Y, Wei X, Bao X, Nawaz S, Qu J, Wang B. Asymmetric 1,3-dipolar cycloaddition of 4-aminopyrazolone-based azomethine ylides: a straightforward approach to spiropyrazolones. Org Chem Front 2022. [DOI: 10.1039/d2qo00426g] [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
The asymmetric [3+2] cycloaddition of 4-amino pyrazolone-derived azomethine ylides with α,β-enones has been established for the synthesis of 4-spiropyazolones derivatives with four contiguous stereocenters. This cycloaddition process delivered spiro[pyrrolidine-2,4’-pyrazolone] derivatives...
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27
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A tandem asymmetric oxidation-oxa-Michael sequence for dearomatization of β-naphthols. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.12.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Sasa H, Mori K, Kikushima K, Kita Y, Dohi T. μ-Oxo-Hypervalent-Iodine-Catalyzed Oxidative C-H Amination for Synthesis of Benzolactam Derivatives. Chem Pharm Bull (Tokyo) 2021; 70:106-110. [PMID: 34897163 DOI: 10.1248/cpb.c21-00980] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Benzolactams have unique biological activity and high utility in the synthesis of valuable compounds with direct applicability to oxindole alkaloids and antibacterial agents. Despite recent advances in organic chemistry and the growing number of reported methods for synthesizing benzolactams, their preparation still requires a multistep process. C-H amination reactions can convert aromatic C(sp2)-H bonds directly to C(sp2)-N bonds, and this direct approach to C-N bond formation offers effective access to benzolactams. Hypervalent iodine reagents are promising tools for achieving oxidative C-H amination. Motivated by our ongoing research efforts toward the development of useful hypervalent-iodine-mediated oxidative transformations, we herein describe an effective intramolecular oxidative C-H amination reaction based on μ-oxo hypervalent iodine catalysis for the synthesis of benzolactams bearing various functional groups.
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Affiliation(s)
- Hirotaka Sasa
- College of Pharmaceutical Sciences, Ritsumeikan University
| | - Koyo Mori
- College of Pharmaceutical Sciences, Ritsumeikan University
| | | | - Yasuyuki Kita
- Research Organization of Science and Technology, Ritsumeikan University
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University.,Research Organization of Science and Technology, Ritsumeikan University
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29
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Yang H, Xu WL, Zeng XY, Chen J, Yu L, Zhou L. Hydrogen Bond Assisted Central-to-Spiro Chirality Transfer and Central-to-Axial Chirality Conversion: Asymmetric Synthesis of Spirocycles. Org Lett 2021; 23:9315-9320. [PMID: 34779205 DOI: 10.1021/acs.orglett.1c03710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The asymmetric construction of chiral spiroenones bearing both axial and spiro-central chirality has been established for the first time by a central-to-spiro chirality transfer and a central-to-axial chirality conversion from chiral 2,3-diarylbenzoindolines. Mechanistic studies indicate the hydrogen bonds play important roles in this process, providing an efficient strategy for enantioselective construction of spirocyclic backbones via simultaneously controlling spiro-central and axial chirality in one operation.
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Affiliation(s)
- Hui Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Wen-Lei Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Xin-Yi Zeng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Jie Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Le Yu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
| | - Ling Zhou
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, National Demonstration Center for Experimental Chemistry Education, Northwest University, Xi'an 710127, P. R. China
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30
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Kumar R, Singh FV, Takenaga N, Dohi T. Asymmetric Direct/Stepwise Dearomatization Reactions Involving Hypervalent Iodine Reagents. Chem Asian J 2021; 17:e202101115. [PMID: 34817125 DOI: 10.1002/asia.202101115] [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: 09/26/2021] [Revised: 11/19/2021] [Indexed: 01/06/2023]
Abstract
A remarkable growth in hypervalent iodine-mediated oxidative transformations as stoichiometric reagents as well as catalysts has been well-documented due to their excellent properties, such as mildness, easy handling, high selectivity, environmentally friendly nature, and high stability. This review aims at highlighting the asymmetric oxidative dearomatization reactions involving hypervalent iodine compounds. The present article summarizes asymmetric intra- and intermolecular dearomatization reactions using chiral hypervalent iodine reagents/catalysts as well as hypervalent iodine-mediated dearomatization reactions followed by desymmetrization.
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Affiliation(s)
- Ravi Kumar
- Department of Chemistry, J. C. Bose University of Science & Technology, YMCA Faridabad, NH-2, Sector-6, Mathura Road, Faridabad, Haryana, 121006, India
| | - Fateh V Singh
- Chemistry Division, School of Advanced Sciences (SAS), Vellore Institute of Technology - Chennai, Chennai, 600127, Tamil Nadu, India
| | - Naoko Takenaga
- Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya, 468-8503, Japan
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, 525-0058, Japan
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31
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Zhang SS, Xue J, Gu Q, Jiang X, You SL. Dearomatization reaction of β-naphthols with disulfurating reagents. Org Biomol Chem 2021; 19:8761-8771. [PMID: 34581384 DOI: 10.1039/d1ob01731d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
p-TsOH-catalyzed intermolecular dearomatization reactions of β-naphthols with disulfurating reagents were developed. Various β-naphthalenones bearing a quaternary carbon stereogenic center were obtained smoothly in good to excellent yields with high chemoselectivity in the presence of 5 mol% p-TsOH. This reaction features mild reaction conditions and excellent functional group tolerance.
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Affiliation(s)
- Shan-Shan Zhang
- Chang-Kung Chuang Institute, East China Normal University, Shanghai 200062, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
| | - Jiahui Xue
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
| | - Xuefeng Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
| | - Shu-Li You
- Chang-Kung Chuang Institute, East China Normal University, Shanghai 200062, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
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32
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Li X, Li G, Cheng Y, Du Y. The aryl iodine-catalyzed organic transformation via hypervalent iodine species generated in situ. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2021-0019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The application of hypervalent iodine species generated in situ in organic transformations has emerged as a useful and powerful tool in organic synthesis, allowing for the construction of a series of bond formats via oxidative coupling. Among these transformations, the catalytic aryl iodide can be oxidized to hypervalent iodine species, which then undergoes oxidative reaction with the substrates and the aryl iodine regenerated again once the first cyclic cycle of the reaction is completed. This review aims to systematically summarize and discuss the main progress in the application of in situ-generated hypervalent iodine species, providing references and highlights for synthetic chemists who might be interested in this field of hypervalent iodine chemistry.
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Affiliation(s)
- Xuemin Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency , School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072 , China
| | - Guangchen Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency , School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072 , China
| | - Yifu Cheng
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency , School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072 , China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency , School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072 , China
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33
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Yu Y, Zhang Z, Voituriez A, Rabasso N, Frison G, Marinetti A, Guinchard X. Enantioselective Au(I)-catalyzed dearomatization of 1-naphthols with allenamides through Tethered Counterion-Directed Catalysis. Chem Commun (Camb) 2021; 57:10779-10782. [PMID: 34586114 DOI: 10.1039/d1cc04088j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Tethered Counterion-Directed Catalysis (TCDC) approach has been applied to the enantioselective Au(I) catalyzed dearomatizations of 1-naphthols with allenamides. Stereocontrol is ensured by the intramolecular ion-pairing between the chiral gold-tethered phosphate and an iminium unit, that provides a rigid, well-defined chiral environment to the key electrophilic intermediate.
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Affiliation(s)
- Yunliang Yu
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France. .,Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Zhenhao Zhang
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France. .,LCM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Arnaud Voituriez
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
| | - Nicolas Rabasso
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Orsay cedex, France
| | - Gilles Frison
- LCM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France.,Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, 75005 Paris, France
| | - Angela Marinetti
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
| | - Xavier Guinchard
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France.
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Affiliation(s)
| | - Shovan Mondal
- Department of Chemistry Syamsundar College Shyamsundar 713424 India
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35
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Ueda J, Harada S, Kobayashi M, Yanagawa M, Nemoto T. Maleic Acid/Thiourea‐Catalyzed Dearomative
ipso
‐Friedel–Crafts Reaction of Indoles to Produce Functionalized Spiroindolenines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jun Ueda
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Mayu Kobayashi
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Mai Yanagawa
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences Chiba University 1-8-1, Inohana, Chuo-ku Chiba 260-8675 Japan
- Molecular Chirality Research Center Chiba University 1-33, Yayoi-cho, Inage-ku Chiba 263-8522 Japan
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36
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Shimazaki Y, Wata C, Hashimoto T, Maruoka K. Enantioselective Hydrative
para‐
Dearomatization of Sulfonanilides by an Indanol‐based Chiral Organoiodine Catalyst. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuto Shimazaki
- Department of Chemistry Graduate School of Science Kyoto University 606-8502 Kyoto Sakyo Japan
| | - Chisato Wata
- Chiba Iodine Resource Innovation Center and Department of Chemistry, Graduate School of Science Chiba University 1–33, Yayoi, Inage 263-8522 Chiba Japan
| | - Takuya Hashimoto
- Chiba Iodine Resource Innovation Center and Department of Chemistry, Graduate School of Science Chiba University 1–33, Yayoi, Inage 263-8522 Chiba Japan
| | - Keiji Maruoka
- Department of Chemistry Graduate School of Science Kyoto University 606-8502 Kyoto Sakyo Japan
- School of Chemical Engineering and Light Industry Guangdong University of Technology 510006 Guangzhou Panyu District P. R. China
- Graduate School of Pharmaceutical Sciences Kyoto University 606-8501 Kyoto Sakyo Japan
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37
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Lee E, Hwang Y, Kim YB, Kim D, Chang S. Enantioselective Access to Spirolactams via Nitrenoid Transfer Enabled by Enhanced Noncovalent Interactions. J Am Chem Soc 2021; 143:6363-6369. [DOI: 10.1021/jacs.1c02550] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Euijae Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Yeongyu Hwang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Yeong Bum Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea
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38
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Dohi T, Han JW, Kumar R. Editorial: New Hypervalent Iodine Reagents for Oxidative Coupling. Front Chem 2021; 9:642889. [PMID: 33692987 PMCID: PMC7938304 DOI: 10.3389/fchem.2021.642889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/13/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, Shiga, Japan
| | - Jian-Wei Han
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China
| | - Ravi Kumar
- Department of Chemistry, J. C. Bose University of Science and Technology, YMCA, Faridabad, India
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39
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Ito T, Harada S, Homma H, Takenaka H, Hirose S, Nemoto T. Asymmetric Intramolecular Dearomatization of Nonactivated Arenes with Ynamides for Rapid Assembly of Fused Ring System under Silver Catalysis. J Am Chem Soc 2021; 143:604-611. [PMID: 33382259 DOI: 10.1021/jacs.0c10682] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Arene dearomatization is a straightforward method for converting an aromatic feedstock into functionalized carbocycles. Enantioselective dearomatizations of chemically inert arenes, however, are quite limited and underexplored relative to those of phenols and indoles. We developed a method for diazo-free generation of silver-carbene species from an ynamide and applied it to the dearomatization of nonactivated arenes. Transiently generated norcaradiene could be trapped by intermolecular [4 + 2] cycloaddition, synthesizing polycycles with five consecutive stereogenic centers. This protocol constitutes the first highly enantioselective reaction based on the diazo-free generation of silver-carbene species. Mechanistic investigations revealed a dearomatization followed by two different classes of pericyclic reactions, as well as the origin of the chemo- and enantioselectivity.
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Affiliation(s)
- Tsubasa Ito
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Haruka Homma
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Hiroki Takenaka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shumpei Hirose
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan.,Molecular Chirality Research Center, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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40
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Bauer A, Maulide N. Recent discoveries on the structure of iodine(iii) reagents and their use in cross-nucleophile coupling. Chem Sci 2021; 12:853-864. [PMID: 34163852 PMCID: PMC8178994 DOI: 10.1039/d0sc03266b] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This perspective article discusses structural features of iodine(iii) compounds as a prelude to presenting their use as umpolung reagents, in particular as pertains to their ability to promote the selective coupling of two nucleophilic species via 2e- oxidation.
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Affiliation(s)
- Adriano Bauer
- Institute of Organic Chemistry, University of Vienna Währinger Strasse 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna Währinger Strasse 38 1090 Vienna Austria http://maulide.univie.ac.at
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41
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Nemoto T, Harada S, Ikeda M, Nakayama H, Kanda A. Synthetic Studies on Didymeline Using Spirocyclization of Phenols with Diazo Functionality. HETEROCYCLES 2021. [DOI: 10.3987/com-20-s(k)65] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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42
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Abstract
The focus article discusses the innovation of hypervalent(iii) iodine regarding skeletal rearrangement, cycloaddition and cyclization, and sp3 C–H functionalization in natural product synthesis.
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Affiliation(s)
- Zhuo Wang
- Southern University of Science and Technology
- School of Medicine
- Shenzhen
- People's Republic of China
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43
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Zheng H, Xue XS. Recent Computational Studies on Mechanisms of Hypervalent Iodine(III)-Promoted Dearomatization of Phenols. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200620223218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Hypervalent iodine-promoted dearomatization of phenols has received intense
attention. This mini-review summarizes recent computational mechanistic studies of phenolic
dearomatizations promoted by hypervalent iodine(III) reagents or catalysts. The first part
of this review describes mechanisms of racemic dearomatization of phenols, paying special
attention to the associative and dissociative pathways. The second part focuses on mechanisms
and selectivities of diastereo- or enantio-selective dearomatization of phenols.
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Affiliation(s)
- Hanliang Zheng
- College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiao-Song Xue
- College of Chemistry, Nankai University, Tianjin 300071, China
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44
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Design and synthesis of chiral urea-derived iodoarenes and their assessment in the enantioselective dearomatizing cyclization of a naphthyl amide. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Homma H, Harada S, Ito T, Kanda A, Nemoto T. Atypical Dearomative Spirocyclization of β-Naphthols with Diazoacetamides Using a Silver Catalyst. Org Lett 2020; 22:8132-8138. [PMID: 33026816 DOI: 10.1021/acs.orglett.0c03110] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A chemoselective dearomatization of the less reactive benzenoid unit in β-naphthol was developed. Spirocyclization with a reductant constructs a pivotal structure for drug candidates. One-pot oxidative conversion enabled the tandem dearomatization of β-naphthol, producing conjugated tetraenone variants. The potential utility of the product as an F--selective anion sensor was also demonstrated. Theoretical studies revealed the intermediacy of silver-carbenoid species leading to chemoselective spirocyclization over arene cyclopropanation.
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Affiliation(s)
- Haruka Homma
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Shingo Harada
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tsubasa Ito
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Ayaka Kanda
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
| | - Tetsuhiro Nemoto
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan.,Molecular Chirality Research Center, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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46
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Talukdar R. Tracking down the brominated single electron oxidants in recent organic red-ox transformations: photolysis and photocatalysis. Org Biomol Chem 2020; 18:8294-8345. [PMID: 33020775 DOI: 10.1039/d0ob01652g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A wide range of organic and inorganic brominated compounds including molecular bromine have been extensively used as oxidants in many organic photo-redox transformations in recent years, an area of ever growing interest because of greener and milder approaches. The oxidation power of these compounds is utilized through both mechanistic pathways (by hydrogen atom transfer or HAT in the absence of a photocatalyst and a combination of single electron transfer or SET and/or HAT in the presence of a photocatalyst). Not only as terminal oxidants for regeneration of photocatalysts, but brominated reactants have also contributed to the oxidation of the reaction intermediate(s) to carry on the radical chain process in several reactions. Here in this review mainly the non-brominative oxidative product formations are discussed, carried out since the last two decades, skipping the instances where they acted as terminal oxidants only to regenerate photocatalysts. The reactions are used to generate natural products, pharmaceuticals and beyond.
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Affiliation(s)
- Ranadeep Talukdar
- Molecular Synthesis and Drug Discovery Laboratory, Centre of Biomedical Research, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow-226014, India.
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47
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Chen C, He L. Advances in research of spirodienone and its derivatives: Biological activities and synthesis methods. Eur J Med Chem 2020; 203:112577. [DOI: 10.1016/j.ejmech.2020.112577] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/30/2020] [Accepted: 06/11/2020] [Indexed: 12/17/2022]
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48
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Chen D, Wang Y, Cai XM, Cao X, Jiang P, Wang F, Huang S. Synthesis of Spiroisoxazolines via TEMPO/NaNO 2-Catalyzed Aerobic Oxidative Dearomatization. Org Lett 2020; 22:6847-6851. [PMID: 32808793 DOI: 10.1021/acs.orglett.0c02372] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A catalytic, aerobic oxidative dearomatization protocol has been developed for the preparation of spiroisoxazline scaffolds from oximes using TEMPO and NaNO2 as the catalyst and O2 as the sole oxidant. This dearomatization methodology features its mild reaction conditions, good functional group tolerance, and an unprecedented broad substrate scope, encompassing phenols, aryl ethers, thiophenols, aryl sulfides, etc.
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Affiliation(s)
- Dengfeng Chen
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Yaming Wang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Xu-Min Cai
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Xiaoji Cao
- College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Rd., Hangzhou, Zhejiang 310014, People's Republic of China
| | - Ping Jiang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Fei Wang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Shenlin Huang
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
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49
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Kraszewski K, Tomczyk I, Drabinska A, Bienkowski K, Solarska R, Kalek M. Mechanism of Iodine(III)-Promoted Oxidative Dearomatizing Hydroxylation of Phenols: Evidence for a Radical-Chain Pathway. Chemistry 2020; 26:11584-11592. [PMID: 32608529 DOI: 10.1002/chem.202002026] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/26/2020] [Indexed: 11/09/2022]
Abstract
The oxidative dearomatization of phenols with the addition of nucleophiles to the aromatic ring induced by hypervalent iodine(III) reagents and catalysts has emerged as a highly useful synthetic approach. However, experimental mechanistic studies of this important process have been extremely scarce. In this report, we describe systematic investigations of the dearomatizing hydroxylation of phenols using an array of experimental techniques. Kinetics, EPR spectroscopy, and reactions with radical probes demonstrate that the transformation proceeds by a radical-chain mechanism, with a phenoxyl radical being the key chain-carrying intermediate. Moreover, UV and NMR spectroscopy, high-resolution mass spectrometry, and cyclic voltammetry show that before reacting with the phenoxyl radical, the water molecule becomes activated by the interaction with the iodine(III) center, causing the Umpolung of this formally nucleophilic substrate. The radical-chain mechanism allows the rationalization of all existing observations regarding the iodine(III)-promoted oxidative dearomatization of phenols.
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Affiliation(s)
- Karol Kraszewski
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland.,Faculty of Chemistry, University of Warsaw, L. Pasteura 1, 02-093, Warsaw, Poland
| | - Ireneusz Tomczyk
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland.,Faculty of Chemistry, University of Warsaw, L. Pasteura 1, 02-093, Warsaw, Poland
| | - Aneta Drabinska
- Faculty of Physics, University of Warsaw, L. Pasteura 5, 02-093, Warsaw, Poland
| | - Krzysztof Bienkowski
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland
| | - Renata Solarska
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland
| | - Marcin Kalek
- Centre of New Technologies, University of Warsaw, S. Banacha 2C, 02-097, Warsaw, Poland
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50
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Yadav P, Pratap R, Ji Ram V. Natural and Synthetic Spirobutenolides and Spirobutyrolactones. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000259] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Pratik Yadav
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110 007 India
| | - Ramendra Pratap
- Department of Chemistry University of Delhi Delhi 110 007 India
| | - Vishnu Ji Ram
- B-67, Eldeco Towne IIM road, PO-Diguria Lucknow-226020 Uttar Pradesh India
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