1
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Bania N, Barman D, Pan SC. Organocatalytic Asymmetric Inverse-Electron-Demand Diels-Alder Reaction between Alkylidene Pyrazolones and Allyl Ketones: Access to Tetrahydropyrano[2,3- c]pyrazoles. J Org Chem 2023. [PMID: 37262311 DOI: 10.1021/acs.joc.3c01063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Herein we report a catalytic asymmetric inverse-electron-demand Diels-Alder reaction between alkylidene pyrazolones and allyl ketones. Allyl ketone gets activated by a bifunctional thiourea catalyst and acts as a dienolate in this reaction. The trisubstituted tetrahydropyrano[2,3-c]pyrazoles were obtained in moderate to good yields with high diastereo- and enantioselectivities. Few applications, including a decarbonylation reaction, have been demonstrated.
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Affiliation(s)
- Nimisha Bania
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Dipankar Barman
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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2
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Torán R, Miguélez R, Sanz‐Marco A, Vila C, Pedro JR, Blay G. Asymmetric Addition and Cycloaddition Reactions with Ylidene‐Five‐Membered Heterocycles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ricardo Torán
- Departament de Química Orgànica Universitat de València C/Dr. Moliner 50 46100- Burjassot (València) Spain
| | - Rubén Miguélez
- Departament de Química Orgànica Universitat de València C/Dr. Moliner 50 46100- Burjassot (València) Spain
| | - Amparo Sanz‐Marco
- Departament de Química Orgànica Universitat de València C/Dr. Moliner 50 46100- Burjassot (València) Spain
| | - Carlos Vila
- Departament de Química Orgànica Universitat de València C/Dr. Moliner 50 46100- Burjassot (València) Spain
| | - José R. Pedro
- Departament de Química Orgànica Universitat de València C/Dr. Moliner 50 46100- Burjassot (València) Spain
| | - Gonzalo Blay
- Departament de Química Orgànica Universitat de València C/Dr. Moliner 50 46100- Burjassot (València) Spain
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3
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Wei R, Gao L, Li G, Tang L, Zhang G, Zheng F, Song H, Li Q, Ban S. Squaramide-catalysed asymmetric Friedel-Crafts alkylation of naphthol and unsaturated pyrazolones. Org Biomol Chem 2021; 19:3370-3373. [PMID: 33899883 DOI: 10.1039/d1ob00347j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The first method for highly efficient asymmetric Michael-type Friedel-Crafts alkylation of naphthol and unsaturated pyrazolones has been accomplished under mild reaction conditions. In the presence of the chiral squaramide catalyst, a wide range of substrates are tolerated in excellent yields (up to 99%) with reasonable enantioselectivities (up to 96% ee).
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Affiliation(s)
- Ran Wei
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
| | - Li Gao
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
| | - Gaihui Li
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
| | - Li Tang
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
| | - Guoshun Zhang
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
| | - Feilang Zheng
- Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shanxi, 046000 China
| | - Heng Song
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China. and College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Qingshan Li
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China. and Shanxi Key laboratory of Chronic Inflammatory Targeted Drugs, Shanxi University of Traditional Chinese Medicine, Jinzhong, Shanxi, 030619, China
| | - Shurong Ban
- School of Pharmacy, Shanxi Medical University, Taiyuan, Shanxi, 030001, China.
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4
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Cheng S, Liu H, Jing Y, Cao L, Zhang X. Tandem Conjugate Addition/Aromatization/Acyl Transfer Reaction between 3‐Aryl‐2‐nitropropanoates and Quinone Monoimines. ChemistrySelect 2021. [DOI: 10.1002/slct.202100557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shao‐Bing Cheng
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Hui Liu
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yi Jing
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Lian‐Yi Cao
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiao‐Mei Zhang
- Key Laboratory of Asymmetric Synthesis and Chiraltechnology of Sichuan Province Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences Chengdu 610041 China
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5
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Bania N, Mondal B, Ghosh S, Pan SC. DMAP Catalyzed Domino Rauhut-Currier Cyclization Reaction between Alkylidene Pyrazolones and Nitro-olefins: Access to Tetrahydropyrano[2,3- c]pyrazoles. J Org Chem 2021; 86:4304-4312. [PMID: 33593067 DOI: 10.1021/acs.joc.0c02871] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we employ unsaturated pyrazolones in the Rauhut-Currier reaction for the first time. A domino Rauhut-Currier cyclization reaction has been developed between unsaturated pyrazolones and nitro-olefins. The trisubstituted tetrahydropyrano[2,3-c]pyrazoles were obtained in moderate to high yields with excellent diastereoselectivities. A few applications including a synthesis of disubstituted tetrahydropyrano[2,3-c]pyrazole have been demonstrated. A preliminary catalytic asymmetric version of this process was also studied with chiral DMAP catalysts.
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Affiliation(s)
- Nimisha Bania
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Buddhadeb Mondal
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sounak Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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6
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Awasthi A, Yadav P, Tiwari DK. A three-component, general and practical route for diastereoselective synthesis of aza-spirocyclic pyrazolones via a decarboxylative annulation process. NEW J CHEM 2021. [DOI: 10.1039/d0nj05915c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, general, and practical route for highly diastereoselective synthesis of aza-spirocyclic pyrazolones from easily available α-amino acids, aldehydes, and alkylidene pyrazolones by means of a decarboxylative annulation process is reported.
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Affiliation(s)
- Annapurna Awasthi
- Molecular Synthesis and Drug Discovery Unit
- Center of Biomedical Research (CBMR)
- SGPGIMS Campus
- Lucknow
- India
| | - Pushpendra Yadav
- Molecular Synthesis and Drug Discovery Unit
- Center of Biomedical Research (CBMR)
- SGPGIMS Campus
- Lucknow
- India
| | - Dharmendra Kumar Tiwari
- Molecular Synthesis and Drug Discovery Unit
- Center of Biomedical Research (CBMR)
- SGPGIMS Campus
- Lucknow
- India
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7
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Affiliation(s)
- Sana Sikandar
- Department of Chemistry Government College University Faisalabad Faisalabad Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry Government College University Faisalabad Faisalabad Pakistan
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8
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9
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Maity R, Sahoo SC, Pan SC. Organocatalytic Asymmetric Michael-Acyl Transfer Reaction of α-Nitroketones with 2-Hydroxybenzylidene Ketones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rajendra Maity
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subas Chandra Sahoo
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
| | - Subas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati; Assam 781039 India
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10
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Mutyala R, Reddy VR, Donthi R, Kallaganti VR, Chandra R. Direct catalytic asymmetric method for the synthesis of tetrahydropyranopyrazoles through allene zwitterion chemistry. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Gong Y, Wang Y, Li E, Cui H, Duan Z. Enantio‐ and Diastereoselective Synthesis of β‐Aryl‐β‐pyrazolyl α‐Amino Acid Esters via Copper‐Catalyzed Reaction of Azomethine Ylides with Benzylidenepyrazolones. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801137] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yan‐Chuan Gong
- College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan ProvinceZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Yue Wang
- College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan ProvinceZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Er‐Qing Li
- College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan ProvinceZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Hao Cui
- College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan ProvinceZhengzhou University Zhengzhou 450001 People's Republic of China
| | - Zheng Duan
- College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan ProvinceZhengzhou University Zhengzhou 450001 People's Republic of China
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12
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Cheng C, Sun X, Wu Z, Liu Q, Xiong L, Miao Z. Lewis base catalyzed regioselective cyclization of allene ketones or α-methyl allene ketones with unsaturated pyrazolones. Org Biomol Chem 2019; 17:3232-3238. [PMID: 30840009 DOI: 10.1039/c9ob00179d] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A nitrogen-containing Lewis base catalyzed highly regioselective [4 + 2] cycloaddition of allene ketones or α-methyl allene ketones with unsaturated pyrazolones has been disclosed to give the corresponding tetrahydropyrano [2,3-c] pyrazoles in moderate to good yields under mild conditions. High regioselectivity, 100% atom-economy, broad substrate scope and good functional group tolerance are attractive features of this process and make it a practical and versatile transformation.
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Affiliation(s)
- Cheng Cheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Weijin Road 94, Tianjin 300071, China.
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13
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Mondal B, Pan SC. Organocatalytic Asymmetric Cascade Reaction betweeno-Hydroxycinnamaldehydes andγ/δ-Hydroxyenones: A Route to Tetrahydrofuran/Tetrahydropyran-Fused 3,4-Dihydrocoumarins. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800900] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Buddhadeb Mondal
- Department of Chemistry; Indian Institute of Technology Guwahati, Assam; India 781039
| | - Subhas Chandra Pan
- Department of Chemistry; Indian Institute of Technology Guwahati, Assam; India 781039
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14
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Liu S, Bao X, Wang B. Pyrazolone: a powerful synthon for asymmetric diverse derivatizations. Chem Commun (Camb) 2018; 54:11515-11529. [DOI: 10.1039/c8cc06196c] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This feature article reports recent advances in the asymmetric diverse derivatizations of the pyrazolone scaffold.
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Affiliation(s)
- Siyuan Liu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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15
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Bao X, Wei S, Qu J, Wang B. C6′ steric bulk of cinchona alkaloid enables an enantioselective Michael addition/annulation sequence toward pyranopyrazoles. Chem Commun (Camb) 2018; 54:2028-2031. [DOI: 10.1039/c8cc00154e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A C6′ silyloxyl quinine catalyzed asymmetric Michael addition/annulation cascade between pyrazolones and enynones was developed.
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Affiliation(s)
- Xiaoze Bao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Shiqiang Wei
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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