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Khuntia R, Maity D, Chandra Pan S. Catalytic Asymmetric De Novo Synthesis of Chiral Pyrroles Through Desymmetrizing Oxidative [3+2]-Cycloaddition and the Van Leusen Reaction. Chemistry 2025; 31:e202404511. [PMID: 39910876 DOI: 10.1002/chem.202404511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2024] [Indexed: 02/07/2025]
Abstract
Central chirality in heteroarene derivatives arising from unsymmetrically substituted heteroarene rings is an intriguing but underexplored topic. Herein, we reported the first catalytic enantioselective de novo construction of centrally chiral pyrroles through desymmetrizing oxidative [3+2]-cycloaddition by employing silver catalysis. This judicious desymmetrization can produce at least four continuous stereogenic centers without creating any additional stereocenter. Furthermore, to introduce a more diverse set of substituents, we developed the first catalytic asymmetric Van Leusen reaction with α-substituted TosMIC for the synthesis of centrally chiral pyrroles. A wide range of polycyclic 2-substituted, 3,4-fused pyrroles were obtained in high yields and with good to high enantioselectivities. This report includes the elaboration of methanobenzo[f]isoindole to synthetically challenging building block chiral isoindole compounds, which are synthesized enantioselectively for the first time.
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Affiliation(s)
- Rupkumar Khuntia
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India
| | - Diptendu Maity
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam, 781039, India
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2
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Ray S, Behera D, Singh Harariya M, Das S, Tarafdar PK, Mukherjee S. Alkoxy-Directed Dienamine Catalysis in [4 + 2]-Cycloaddition: Enantioselective Synthesis of Benzo-[3]-ladderanol. J Am Chem Soc 2025; 147:2523-2536. [PMID: 39797784 DOI: 10.1021/jacs.4c13713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2025]
Abstract
Despite tremendous progress of dienamine catalysis along with its application in enantioselective synthesis over nearly two decades, certain limitations, especially with respect to the regioselectivity in the dienamine generation step, continue to persist. To overcome these shortcomings of classical dienamine catalysis, we now introduce the concept of alkoxy-directed dienamine catalysis and apply it to the enantioselective de novo arene construction by desymmetrizing meso-enediones through [4 + 2]-cycloaddition. Catalyzed by a diphenylprolinol silyl ether, this reaction utilizes γ-alkoxy α,β-unsaturated aldehydes as the substrate and proceeds in a highly regioselective fashion through the intermediacy of δ-alkoxy dienamine. Besides carrying out mechanistic elucidation through density functional theory (DFT) calculation, the utility of this newly developed strategy is demonstrated for the concise enantioselective synthesis of a benzo-analogue of the natural ladderane phospholipid component (+)-[3]-ladderanol. Designed as a functional analogue of natural [3]-ladderanol, this unnatural benzo-[3]-ladderanol was found to impart lower proton permeability and higher stability to the membrane compared to its natural counterpart.
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Affiliation(s)
- Sayan Ray
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Deepak Behera
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Mahesh Singh Harariya
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Subrata Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia 741246, India
| | - Pradip K Tarafdar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia 741246, India
| | - Santanu Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560012, India
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3
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Biswas S, Pan SC. Catalytic Asymmetric Desymmetrizing [4+2] Cycloaddition/Base-Mediated Oxidative Aromatization Sequence: De Novo Synthesis of Isobenzofuranone-Embedded Chiral Arenes. Org Lett 2025; 27:309-314. [PMID: 39731753 DOI: 10.1021/acs.orglett.4c04342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2024]
Abstract
Herein, an organocatalytic asymmetric desymmetrizing [4+2] cycloaddition/base-mediated oxidative aromatization reaction sequence has been developed between spirophthalide 2,5-cyclohexadienones and β-methyl cinnamaldehydes. The reaction proceeds through in situ chiral dienamine intermediate formation, and the densely functionalized spirocyclic isobenzofuranone-embedded chiral arenes were formed in high yields with excellent enantioselectivities. A 2-fold desymmetrization reaction was also performed, and the products were obtained in high enantioselectivities.
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Affiliation(s)
- Subhankar Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
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4
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Singh S, Saini R, Joshi A, Singh N, Singh RP. Desymmetric homologating annulation to access chiral pentafulvenes and their application in bioimaging. Nat Commun 2024; 15:2101. [PMID: 38453892 PMCID: PMC10920648 DOI: 10.1038/s41467-024-45346-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 01/16/2024] [Indexed: 03/09/2024] Open
Abstract
The architectural design of polycyclic/multisubstituted pentafulvenes has demonstrated great potential for the development of electrochromic materials and biologically active motifs. Unfortunately, the enantioselective construction of such distinctive cores with all carbon quaternary chiral centers has remained untouched to date. Herein, we disclose an enantioselective homologating annulation of cyclopent-4-ene-dione with 3-cyano-4-methylcoumarins through L-tert-leucine derived thiourea catalysis, affording a wide range of enantioenriched polycyclic multisubstituted embedded aminopentafulvenes with excellent stereocontrol (up to 99:1 er) and chemical yields up to 87%. A detailed photophysical and cytotoxicity analysis of racemic and chiral homologated adducts unveils the exceptional behavior of chiral adducts over their racemic analogs, highlighting the importance of stereoselectivity of the developed scaffolds. A cellular uptake experiment in a mammalian fibroblast cell line confirmed the potential of developed polycyclic aminopentafulvene cores as a highly promising labeling dye that can be utilized for bioimaging without any adverse effects.
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Affiliation(s)
- Sanjay Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Ravi Saini
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Akshay Joshi
- Center for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Neetu Singh
- Center for Biomedical Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Ravi P Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India.
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5
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Du SS, Zhai YH, Zhang C, Wang MC, Jia SK, Mei GJ, Hua YZ. Dinuclear Zinc-Catalyzed Asymmetric Desymmetrization of Cyclopentendiones: Access to Functional Cyclopentanediones Bearing an All-carbon Quaternary Stereocenter. Chem Asian J 2023; 18:e202300591. [PMID: 37524655 DOI: 10.1002/asia.202300591] [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: 07/07/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/02/2023]
Abstract
The success in the identification of the two enantioisomeric surfaces of electrophiles by dinuclear zinc catalysts is disclosed. This protocol realizes a dinuclear zinc-cocatalyzed desymmetrization of cyclopentendiones using α-hydroxy aryl ketones as nucleophiles through Michael addition reaction. Under mild conditions, a series of functional cyclopentanediones bearing multiple stereogenic centers including an all-carbon quaternary stereocenter, were obtained in moderate to good yields with excellent stereoselectivities.
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Affiliation(s)
- Si-Si Du
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
| | - Ying-Hui Zhai
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
| | - Cui Zhang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
| | - Min-Can Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
| | - Shi-Kun Jia
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
| | - Guang-Jian Mei
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, No. 100, Science Road, Zhengzhou City Henan Province, 450000, P. R. China
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6
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Li LQ, Zhao JQ, Zhang YP, You Y, Wang ZH, Ge ZZ, Zhou MQ, Yuan WC. Diastereoselective Formal 1,3-Dipolar Cycloaddition of Trifluoroethyl Amine-Derived Ketimines Enables the Desymmetrization of Cyclopentenediones. Molecules 2023; 28:5372. [PMID: 37513245 PMCID: PMC10386021 DOI: 10.3390/molecules28145372] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
In this research, a metal-free diastereoselective formal 1,3-dipolar cycloaddition of N-2,2,2-trifluoroethylisatin ketimines and cyclopentene-1,3-diones which can efficiently lead to the desymmetrization of cyclopentene-1,3-diones is developed. With the developed protocol, a series of tetracyclic spirooxindoles containing pyrrolidine and cyclopentane subunits can be smoothly obtained with good results (up to 99% yield and 91:9 dr). Furthermore, the methodology can be extended to trifluoromethyl-substituted iminomalonate, and the corresponding formal [3+2] cycloaddition reaction affords bicyclic heterocycles containing fused pyrrolidine and cyclopentane moieties in moderate yields with >20:1 dr. The synthetic potential of the methodology is demonstrated by the scale-up experiment and by versatile transformations of the products.
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Affiliation(s)
- Lin-Qiang Li
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Jian-Qiang Zhao
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yan-Ping Zhang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Zhen Ge
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Ming-Qiang Zhou
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Wei-Cheng Yuan
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
- School of Pharmacy, Zunyi Medical University, Zunyi 563000, China
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7
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Wang L, Ma R, Xia J, Liu X, Sun J, Zheng G, Zhang Q. DBU-Mediated Isomerization/6-π Electro-Cyclization/Oxidation Cascade of Sulfonyl-Substituted Allenyl Ketones for the Construction of Hetero-1,3,5-Trisubstituted Benzene. Chemistry 2023; 29:e202203309. [PMID: 36509732 DOI: 10.1002/chem.202203309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/26/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
1,3,5-tri-substituted benzene rings emerged with unique properties has widespread applications in materials, boosting the rapid development of their synthesis. Despite the significance, the direct construction of hetero-1,3,5-trisubstituted benzene core was far less-developed. Herein, we realized a DBU-mediated isomerization/6-π electro-cyclization/oxidative aromatization cascade of sulfonyl-substituted allenyl ketones under an air atmosphere (DBU=1,8-diazabicyclo[5.4.0]undec-7-ene). This versatile protocol featured metal-free conditions, easy operation, and broad functional group tolerance provides a new avenue for the construction of hetero-1,3,5-tri-substituted benzene.
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Affiliation(s)
- Lihong Wang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Ruiyang Ma
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Jiuli Xia
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Ximin Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Jiaqiong Sun
- School of Environment, Northeast Normal University, Changchun 130117, Changchun, 130024, P. R. China
| | - Guangfan Zheng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Qian Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
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8
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Ghosh B, Harariya MS, Mukherjee S. Catalytic Enantioselective
de novo
Construction of Chiral Arenes through Desymmetrizing Oxidative [4+2]‐Cycloaddition. Angew Chem Int Ed Engl 2022; 61:e202204523. [DOI: 10.1002/anie.202204523] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Biki Ghosh
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
| | | | - Santanu Mukherjee
- Department of Organic Chemistry Indian Institute of Science Bangalore 560 012 India
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9
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Ghosh B, Harariya MS, Mukherjee S. Catalytic Enantioselective de novo Construction of Chiral Arenes through Desymmetrizing Oxidative [4+2]‐Cycloaddition. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204523] [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)
- Biki Ghosh
- IISc: Indian Institute of Science Department of Organic Chemistry C V Raman Road 560012 Bangalore INDIA
| | - Mahesh Singh Harariya
- IISc: Indian Institute of Science Department of Organic Chemistry C V Raman Road 560012 Bangalore INDIA
| | - Santanu Mukherjee
- Indian Institute of Science Department of Organic Chemistry C V Raman Avenue 560012 Bangalore INDIA
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10
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Chen IT, Guan RY, Han JL. Asymmetric Sequential Vinylogous Mannich/annulation/acylation Process of 2‐Ethylidene 1,3‐indandiones and Isatin N‐Boc ketimines: Access to Chiral Spiro‐oxindole Piperidine Derivatives. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Lv J, Nong Y, Chen K, Wang Q, Jin J, Li T, Jin Z, Chi YR. N-Heterocyclic carbene catalyzed C-acylation reaction for access to linear aminoenones. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.05.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Maurya S, Jadhav SB, Chegondi R. Metal-Free Oxidative Formal C(sp2)-H Arylation of Cyclopentene-1,3-diones with β-Naphthols. Org Biomol Chem 2022; 20:2059-2063. [DOI: 10.1039/d2ob00156j] [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
An efficient, mild, and transition-metal free formal C(sp2)−H arylation of prochiral 2,2-disubstituted cyclopentene-1,3-diones is reported. This oxidative arylation with β-naphthols proceeds via base-mediated C-Michael addition followed by aerial oxygen insertion...
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13
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Xu Y, Zhai TY, Xu Z, Ye LW. Recent advances towards organocatalytic enantioselective desymmetrizing reactions. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2021.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Ni Q, Zhu Z, Fan Y, Chen X, Song X. Chiral Phosphoric Acid Catalyzed Desymmetrization of Cyclopentendiones via Friedel-Crafts Conjugate Addition of Indolizines. Org Lett 2021; 23:9548-9553. [PMID: 34855406 DOI: 10.1021/acs.orglett.1c03780] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An organocatalytic highly diastero- and enantioselective Friedel-Crafts conjugate addition of indolizines to prochiral cyclopentenediones has been successfully developed. This desymmetric transformation provides a direct access to the desired indolizine-substituted cyclopentanediones in yields of 62-91% and excellent stereoselectivities. The utility of the approach was demonstrated by diverse late-stage functionalizations through reduction or oxidation. Importantly, the direct sp2 C-H functionalization with nitromethane in one-pot process resulted in the indolizine-linked axially chiral styrene bearing a remote chiral center.
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Affiliation(s)
- Qijian Ni
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, Anhui, P. R. China
| | - Zhiming Zhu
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, Anhui, P. R. China
| | - Yanjun Fan
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, Anhui, P. R. China
| | - Xiaoyun Chen
- Jiangsu University of Science and Technology, School of Environmental and Chemical Engineering, No. 2 Mengxi Road, Zhenjiang, Jiangsu, 212003, P. R. China
| | - Xiaoxiao Song
- Key Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, Anhui, P. R. China
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15
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16
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Lodhi R, Prakash M, Samanta S. Diastereoselective desymmetrization reactions of prochiral para-quinamines with cyclopropenes generated in situ: access to fused hydroindol-5-one scaffolds. Org Biomol Chem 2021; 19:7129-7133. [PMID: 34369544 DOI: 10.1039/d1ob01322j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Interesting desymmetric [3 + 2] annulation reactions between p-quinamines as prochiral N-donors and 2-aroyl-1-chlorocyclopropanecarboxylates facilitated by a base are reported. This successive double Michael reaction delivered a unique class of cyclopropane-fused hydoindol-5-one frameworks, each having four contiguous stereogenic centers, with three of them being fully substituted. Moreover, this method was found to provide acceptable chemical yields with promising diastereoselectivities (dr of up to ≤95 : 5) and to work with a variety of substrates. Importantly, a polycyclic tacrine analogue used to treat Alzheimer's disease was synthesized using our developed method.
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Affiliation(s)
- Rajni Lodhi
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, 453552, India.
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17
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Zhao C, Blaszczyk SA, Wang J. Asymmetric reactions of N-heterocyclic carbene (NHC)-based chiral acyl azoliums and azolium enolates. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.03.003] [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] Open
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18
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Gao J, Feng J, Du D. Generation of azolium dienolates as versatile nucleophilic synthons via N-heterocyclic carbene catalysis. Org Chem Front 2021. [DOI: 10.1039/d1qo01127h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The recent advances in N-heterocyclic carbene (NHC)-catalyzed generation of azolium dienolates from different precursors and their synthetic applications for the construction of various valuable molecules are summarized comprehensively in this review.
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Affiliation(s)
- Jian Gao
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009, P. R. China
| | - Jie Feng
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009, P. R. China
| | - Ding Du
- Department of Chemistry, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009, P. R. China
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19
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Das T. Desymmetrization of Cyclopentene‐1,3‐Diones via Alkylation, Arylation, Amidation and Cycloaddition Reactions. ChemistrySelect 2020. [DOI: 10.1002/slct.202003341] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tapas Das
- Department of Chemistry NIT Jamshedpur Jamshedpur 831014 India
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20
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Mies T, Ma TK, Barrett AGM. Syntheses of polyfunctional aromatic compounds from non-aromatic precursors. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Shee S, Mukherjee S, Gonnade RG, Biju AT. Enantioselective Synthesis of Tricyclic β-Lactones by NHC-Catalyzed Desymmetrization of Cyclic 1,3-Diketones. Org Lett 2020; 22:5407-5411. [DOI: 10.1021/acs.orglett.0c01756] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sayan Shee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Subrata Mukherjee
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
| | - Rajesh G. Gonnade
- Centre for Materials Characterization, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
| | - Akkattu T. Biju
- Department of Organic Chemistry, Indian Institute of Science, Bangalore-560012, India
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22
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Zhao Q, Peng C, Zhan G, Han B. Synthesis of polysubstituted arenes through organocatalytic benzannulation. RSC Adv 2020; 10:40983-41003. [PMID: 35519191 PMCID: PMC9057797 DOI: 10.1039/d0ra08068c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/03/2020] [Indexed: 12/23/2022] Open
Abstract
Polysubstituted arenes serve as ubiquitous structural cores of aromatic compounds with significant applications in chemistry, biological science, and materials science. Among all the synthetic approaches toward these highly functionalized arenes, organocatalytic benzannulation represents one of the most efficient and versatile transformations in the assembly of structurally diverse arene architectures under mild conditions with exceptional chemo-, regio- or stereoselectivities. Thus, the development of new benzannulation reactions through organocatalysis has attracted much attention in the past ten years. This review systemically presents recent advances in the organocatalytic benzannulation strategies, categorized as follows: (1) Brønsted acid-catalysis, (2) secondary amine catalysis, (3) primary amine catalysis, (4) tertiary amine catalysis, (5) tertiary phosphine catalysis, and (6) N-heterocyclic carbene catalysis. Each part is further classified into several types according to the number of carbon atoms contributed by different synthons participating in the cyclization reaction. The reaction mechanisms involved in different benzannulation strategies were highlighted. Organocatalytic benzannulation represents one of the most efficient transformations for assembling polysubstituted arenes, this review presents recent advances in organocatalytic benzannulation strategies to construct functionalized benzenes.![]()
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Affiliation(s)
- Qian Zhao
- School of Basic Medical Sciences
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Cheng Peng
- School of Basic Medical Sciences
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Gu Zhan
- State Key Laboratory of Southwestern Chinese Medicine Resources
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| | - Bo Han
- School of Basic Medical Sciences
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu 611137
- China
| |
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