1
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Saini N, Khajuria C, Biswas RG, Singh VK. Organocatalytic Asymmetric Cascade Michael-Acyl Transfer Reaction between 2-Fluoro-1,3-diketones and 2-Hydroxynitrostyrenes. J Org Chem 2024. [PMID: 38175926 DOI: 10.1021/acs.joc.3c02512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
An organocatalytic asymmetric cascade Michael-acyl transfer reaction of 2-hydroxynitrostyrenes and monofluorinated β-diketones has been developed employing a cooperative catalytic system. A combination of quinine-derived bifunctional squaramide catalyst and achiral hydrogen bond donor cocatalyst was found to be the most effective for this reaction and provided the fluorinated acyl transfer products in high yields with good diastereo- and excellent enantioselectivities. Synthetic transformations have been demonstrated, including the synthesis of functionalized 2,3-dihydrobenzofurans and 1-pyrroline.
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Affiliation(s)
- Nidhi Saini
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Chhavi Khajuria
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Rayhan G Biswas
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Vinod K Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
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2
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Sahoo SC, Parida C, Pan SC. Organocatalytic Asymmetric Domino [3+2]-Cycloaddition-Acyl Transfer Reaction between Azomethine Ylides and α-Nitro-α,β-Unsaturated Ketones. Chem Asian J 2023; 18:e202300563. [PMID: 37578733 DOI: 10.1002/asia.202300563] [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: 06/29/2023] [Revised: 08/10/2023] [Accepted: 08/14/2023] [Indexed: 08/15/2023]
Abstract
Herein we have developed an organocatalytic asymmetric domino [3+2]-cycloaddition-acyl transfer reaction between in situ generated azomethine ylides and α-nitro-α,β-unsaturated ketones. The desired penta-substituted pyrrolidine products were obtained in high yields and in moderate to good enantio- and diastereoselectivities. Also, an isomerization reaction in silica gel was performed for the formation of another diastereomer in high yields with retention of enantioselectivities.
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Affiliation(s)
- Subas Chandra Sahoo
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, India, 781039
| | - Chandrakanta Parida
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, India, 781039
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam, India, 781039
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3
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Yan H, Zhang C, Han JJ, Du SS, Hua YZ, Wang MC, Mei GJ, Jia SK. Zinc-Catalyzed Asymmetric Cascade Michael/Acyl Transfer Reaction between α-Hydroxy Aryl Ketones and Enynones. Org Lett 2023; 25:1918-1923. [PMID: 36926928 DOI: 10.1021/acs.orglett.3c00446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
We described herein a neoteric enantioselective cascade Michael/acyl transfer reaction of enynones and α-hydroxy aryl ketones catalyzed by dinuclear zinc cooperative catalysis. A series of structurally diverse chiral 1,5-dicarbonyl compounds were synthesized in good yields with excellent stereoselectivities. This strategy features broad substrate scope, high atom economy, as well as enynones as efficient electrophilic acyl transfer reagents in asymmetric cascade reactions for the first time.
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Affiliation(s)
- Hang Yan
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Cui Zhang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Jiao-Jiao Han
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Si-Si Du
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Yuan-Zhao Hua
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Min-Can Wang
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Guang-Jian Mei
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
| | - Shi-Kun Jia
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou, Henan 450000, People's Republic of China
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4
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Yu S, Cai Q, Li J, Yu T, Liang J, Jiao Z, Yao C, Li YM. Enantioselective Michael addition of malonates to β,γ-unsaturated α-ketoesters catalysed by Cu(II) complexes bearing binaphthyl-proline hybrid ligands. Org Biomol Chem 2023; 21:1764-1770. [PMID: 36723244 DOI: 10.1039/d2ob02305a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
High yields (up to 96%) and high ee (up to 92%) were achieved for chiral copper(II) complex-catalysed enantioselective Michael addition of malonates to β,γ-unsaturated-α-ketoesters. The chiral ligands took advantage of both the binaphthyl and the proline moieties, and substituents with different electronic and steric features could be tolerated. The reactions could be carried out under mild conditions, and a gram scale reaction could be realised without the loss of yield and enantioselectivity.
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Affiliation(s)
- Shibo Yu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Qihang Cai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Jiahui Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Tianxu Yu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Jiemian Liang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Zilin Jiao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Chao Yao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
| | - Yue-Ming Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, China.
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5
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Biswas RG, Ray SK, Unhale RA, Singh VK. Organocatalytic Asymmetric Cascade Michael-acyl Transfer Reaction between 2-Fluoro-1,3-diketones and Unsaturated Thiazolones: Access to Fluorinated 4-Acyloxy Thiazoles. Org Lett 2021; 23:6504-6509. [PMID: 34351776 DOI: 10.1021/acs.orglett.1c02313] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Quinine derived bifunctional urea catalyzed cascade Michael-acyl transfer reaction of 5-alkenyl thiazolones and monofluorinated β-diketones has been developed. The fluorine containing 4-acyloxy thiazoles were synthesized in high yields and good diastereo-and excellent enantioselectivities. Synthetic transformations, including synthesis of 4-hydroxy thiazoles, have been demonstrated.
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Affiliation(s)
- Rayhan G Biswas
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India
| | - Sumit K Ray
- Department of Chemistry, Kharagpur College, Paschim Medinipur, West Bengal 721305, India
| | - Rajshekhar A Unhale
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India
| | - Vinod K Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
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6
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Parida C, Pan SC. Organocatalytic asymmetric Michael/acyl transfer reaction between α-nitroketones and 4-arylidenepyrrolidine-2,3-diones. Beilstein J Org Chem 2021; 17:1447-1452. [PMID: 34221173 PMCID: PMC8218544 DOI: 10.3762/bjoc.17.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/31/2021] [Indexed: 01/04/2023] Open
Abstract
An organocatalytic asymmetric Michael/acyl transfer reaction between α-nitroketones and 4-arylidenepyrrolidine-2,3-diones is reported. A bifunctional thiourea catalyst was found to be effective for this reaction. With 10 mol % of the catalyst, good results were attained for a variety of 1,5-dihydro-2H-pyrrol-2-ones under mild reaction conditions.
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Affiliation(s)
- Chandrakanta Parida
- 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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7
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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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8
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Liang S, Jiang B, Xiao B, Chen Z, Du. W, Chen Y. Phosphine Catalyzed Enantioselective Cascade Reaction Initiated by Intermolecular Cross Rauhut‐Currier Reaction of Electron‐Deficient
ortho
‐Formyl Styrenes. ChemCatChem 2020. [DOI: 10.1002/cctc.202000910] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Shu‐Yuan Liang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China
| | - Bo Jiang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China
| | - Ben‐Xian Xiao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China
| | - Zhi‐Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China
| | - Wei Du.
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China
| | - Ying‐Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China
- College of Pharmacy Third Military Medical University Shapingba Chongqing 400038 P. R. China
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9
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Mukhopadhyay S, Gharui C, Pan SC. Applications of Bifunctional Organocatalysts on
ortho
‐Quinone Methides. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900466] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Chandan Gharui
- Department of ChemistryIndian Institute of Technology Guwahati Assam 781039 India
| | - Subhas Chandra Pan
- Department of ChemistryIndian Institute of Technology Guwahati Assam 781039 India
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10
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Song Y, Du D. Bifunctional Squaramide‐Catalysed Asymmetric Michael/Hemiketalization/Retro‐Aldol Reaction of Unsaturated Thiazolones with α‐Nitroketones: Synthesis of Chiral 4‐Acyloxythiazole Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900901] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yong‐Xing Song
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 People's Republic of China
| | - Da‐Ming Du
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology Beijing 100081 People's Republic of China
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11
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Parida C, Maity R, Chandra Sahoo S, Chandra Pan S. α-Nitro-α,β-Unsaturated Ketones: An Electrophilic Acyl Transfer Reagent in Catalytic Asymmetric Friedel–Crafts and Michael Reactions. Org Lett 2019; 21:6700-6704. [DOI: 10.1021/acs.orglett.9b02310] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Chandrakanta Parida
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Rajendra Maity
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Subas Chandra Sahoo
- 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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12
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Asymmetric organocatalytic cascade Michael/acyl transfer reaction of 2-hydroxychalcones with α-nitroketones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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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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14
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Sahoo S, Maity R, Pan SC. DBU-Mediated Addition of α-Nitroketones to α-Cyano-enones and α,β-Unsaturated α-Ketoesters: Synthesis of Dihydrofurans and Conjugated Dienes. ACS OMEGA 2019; 4:2792-2803. [PMID: 31459511 PMCID: PMC6648157 DOI: 10.1021/acsomega.8b03651] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 01/25/2019] [Indexed: 05/03/2023]
Abstract
1,8-Diazabicyclo[5.4.0]undec-7-ene-mediated reactions of α-nitroketones with α-cyano-enones and α,β-unsaturated α-ketoesters have been developed. The products, namely, dihydrofurans and conjugated dienes, were isolated in moderate to good yields, and a range of substitutions were tolerated.
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15
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Abstract
This review summarizes the recent developments of the reactions of α-nitroketones and the consequent formation of a variety of structural frameworks is discussed.
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Affiliation(s)
- Chandan Gharui
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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16
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Bania N, Pan SC. Organocatalytic asymmetric Michael/hemiketalization/acyl transfer reaction of 1,3-propanediones with (E)-2-(2-nitrovinyl)phenols. Org Biomol Chem 2019; 17:1718-1721. [DOI: 10.1039/c8ob01771a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An organocatalytic asymmetric cascade Michael/hemiketalization/acyl transfer reaction between (E)-2-(2-nitrovinyl)phenols and 1,3-propanediones is disclosed to generate products having keto, ester and nitro functionalities.
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Affiliation(s)
- Nimisha Bania
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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17
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Nagaraju S, Sathish K, Paplal B, Satyanarayana N, Kashinath D. 3-Hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-one as a versatile intermediate for retro-Henry and Friedel–Crafts alkylation reactions in aqueous medium. NEW J CHEM 2019. [DOI: 10.1039/c9nj03209f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The first example of a retro-Henry type reaction is reported using 3-hydroxy-3-((3-methyl-4-nitroisoxazol-5-yl)methyl)indolin-2-ones which are prepared via catalyst-free Henry reaction of 3,5-dimethyl-4-nitroisoxazole and isatin.
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Affiliation(s)
- Sakkani Nagaraju
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Kota Sathish
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Banoth Paplal
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Neeli Satyanarayana
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Dhurke Kashinath
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
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18
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Mo Y, Liu S, Liu Y, Ye L, Shi Z, Zhao Z, Li X. Highly stereoselective synthesis of 2,3-dihydrofurans via a cascade Michael addition-alkylation process: a nitro group as the leaving group. Chem Commun (Camb) 2019; 55:6285-6288. [PMID: 31086904 DOI: 10.1039/c9cc01509d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Michael addition-alkylation process between gem-benzoyl-nitrostyrenes and 1,3-dicarbonyl compounds proceeded smoothly in the presence of a bifunctional squaramide, exclusively providing 2,3-dihydrofurans as trans-diastereomers in 33-92% isolated yields and excellent enantioselectivities (29->99% ee).
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Affiliation(s)
- Yiran Mo
- College of Chemistry and Environment Protection Engineering, Southwest Minzu University, Chengdu 610041, China.
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19
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Gharui C, Behera D, Pan SC. Organocatalytic Asymmetric Domino Michael/Acyl Transfer Reaction Between α
-Nitroketones and in situ-
Generated ortho
-Quinone Methides: Route to 2-(1-Arylethyl)phenols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chandan Gharui
- Department of Chemistry; Indian Institute of Technology Guwahati, Assam; India 781039
| | - Debasmita Behera
- 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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20
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Asymmetric synthesis and biological evaluation of 3-nitro-2H-chromenes as potential antibacterial agents. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Cristòfol À, Escudero-Adán EC, Kleij AW. Palladium-Catalyzed (Z)-Selective Allylation of Nitroalkanes: Access to Highly Functionalized Homoallylic Scaffolds. J Org Chem 2018; 83:9978-9990. [DOI: 10.1021/acs.joc.8b01372] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Àlex Cristòfol
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, Tarragona 43007, Spain
- Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, c/Marcel·lí Domingo, 1, Tarragona 43007, Spain
| | - Eduardo C. Escudero-Adán
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, Tarragona 43007, Spain
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, Tarragona 43007, Spain
- Catalan Institute of Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, Barcelona 08010, Spain
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22
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Mondal K, Pan SC. Organocatalytic Asymmetric Domino Michael/Acyl Transfer Reaction between γ/δ-Hydroxyenones and α-Nitroketones. J Org Chem 2018; 83:5301-5312. [DOI: 10.1021/acs.joc.8b00436] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keshab Mondal
- 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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23
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Desimoni G, Faita G, Quadrelli P. Forty Years after “Heterodiene Syntheses with α,β-Unsaturated Carbonyl Compounds”: Enantioselective Syntheses of 3,4-Dihydropyran Derivatives. Chem Rev 2018; 118:2080-2248. [DOI: 10.1021/acs.chemrev.7b00322] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Desimoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Giuseppe Faita
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
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24
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Maity R, Pan SC. Organocatalytic asymmetric Michael/hemiacetalization/acyl transfer reaction of α-nitroketones with o-hydroxycinnamaldehydes: synthesis of 2,4-disubstituted chromans. Org Biomol Chem 2018; 16:1598-1608. [DOI: 10.1039/c8ob00078f] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic asymmetric synthesis of 2,4-disubstituted chroman compounds has been developed via a Michael/hemiketalization/acyl transfer reaction between o-hydroxycinnamaldehydes and α-nitroketones.
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Affiliation(s)
- Rajendra Maity
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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25
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Hsieh YY, Raja A, Hong BC, Kotame P, Chang WC, Lee GH. Organocatalytic Enantioselective Michael–Acetalization–Henry Reaction Cascade of 2-Hydroxynitrostyrene and 5-Oxohexanal for the Entry to the Hexahydro-6H-benzo[c]chromenones with Four Consecutive Stereogenic Centers and an Approach to Aflatoxin Analogues. J Org Chem 2017; 82:12840-12848. [DOI: 10.1021/acs.joc.7b02178] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yu-You Hsieh
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Arun Raja
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Bor-Cherng Hong
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Prakash Kotame
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Wan-Chen Chang
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Gene-Hsiang Lee
- Instrumentation
Center, National Taiwan University, Taipei 106, Taiwan, R.O.C
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26
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Maity R, Gharui C, Sil AK, Pan SC. Organocatalytic Asymmetric Michael/Hemiketalization/Retro-aldol Reaction of α-Nitroketones with Unsaturated Pyrazolones: Synthesis of 3-Acyloxy Pyrazoles. Org Lett 2017; 19:662-665. [DOI: 10.1021/acs.orglett.6b03823] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Rajendra Maity
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Chandan Gharui
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati, Assam 781039, India
| | - Arun K. Sil
- 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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27
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Quintard A, Rodriguez J. Organo- and Iron(0) Catalysis for an Enantioselective Michael Addition-Hemiketalization-Fragmentation Sequence to Protected ω-Hydroxy-nitroketones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600618] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adrien Quintard
- Aix Marseille Univ; CNRS; Centrale Marseille, iSm2 13397 Marseille France
| | - Jean Rodriguez
- Aix Marseille Univ; CNRS; Centrale Marseille, iSm2 13397 Marseille France
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28
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Rong C, Pan H, Liu M, Tian H, Shi Y. A Facile Approach to Optically Active Hydroquinoline-2-carboxylates by a One-Pot Asymmetric Michael/Transamination/Cyclization Process. Chemistry 2016; 22:2887-91. [DOI: 10.1002/chem.201503327] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Chao Rong
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Hongjie Pan
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Mao Liu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Hua Tian
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Department of Chemistry; Colorado State University; Fort Collins Colorado 80523 USA
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29
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Wang Y, Pan J, Jiang R, Wang Y, Zhou Z. Stereocontrolled Construction of 3,4‐Dihydrocoumarin Scaffolds with a Quaternary Amino Acid Moiety
via
Chiral Squaramide‐Catalyzed Cascade Michael Addition/Lactonization Reaction. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500862] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuehua Wang
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China, Fax: (+86)‐22‐2350‐3627
| | - Jianping Pan
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China, Fax: (+86)‐22‐2350‐3627
| | - Rongrong Jiang
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China, Fax: (+86)‐22‐2350‐3627
| | - Youming Wang
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China, Fax: (+86)‐22‐2350‐3627
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People's Republic of China, Fax: (+86)‐22‐2350‐3627
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30
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Ren Q, Sun S, Huang J, Li W, Wu M, Guo H, Wang J. An enantioselective cascade reaction between α,β-unsaturated aldehydes and malonic half-thioesters: a rapid access to chiral δ-lactones. Chem Commun (Camb) 2015; 50:6137-40. [PMID: 24776538 DOI: 10.1039/c4cc01736f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We disclose a novel efficient enantioselective organocatalytic cascade reaction for the preparation of δ-lactones in good to excellent yields (69-93%) and with high to excellent enantioselectivities (88-96% ee).
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Affiliation(s)
- Qiao Ren
- Hubei Collaborative Innovation Centre for Non-power Nuclear Technology, College of Chemistry and Biological Sciences, Hubei University of Science and Technology, Hubei Province 437100, People's Republic China
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31
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Zhang W, Wang Y, Bai C, Wen J, Wang N. One-Pot Synthesis of Aliphatic Nitro Compounds by Michael/retro-Claisen Fragmentation Domino Reaction. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201400836] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Konda S, Guo QS, Abe M, Huang H, Arman H, Zhao JCG. Organocatalyzed Asymmetric Aldol Reactions of Ketones and β,γ-Unsaturated α-Ketoesters and Phenylglyoxal Hydrates. J Org Chem 2014; 80:806-15. [DOI: 10.1021/jo502254e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Swapna Konda
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Qun-Sheng Guo
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Manabu Abe
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima City, Hiroshima 739-8526, Japan
| | - Huicai Huang
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - Hadi Arman
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
| | - John C.-G. Zhao
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249-0698, United States
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33
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Organocatalytic asymmetric cascade Michael/hemiketalization/retro-aldol reaction of 3-acetyl-oxindole with β,γ-unsaturated ketoesters catalyzed by bifunctional amino-squaramides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Konda S, Zhao JCG. High enantioselective Michael addition of malonates to β,γ-unsaturated α-ketoesters catalyzed by bifunctional thioureas. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.112] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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35
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Roudier M, Constantieux T, Quintard A, Rodriguez J. Enantioselective Cascade Formal Reductive Insertion of Allylic Alcohols into the C(O)–C Bond of 1,3-Diketones: Ready Access to Synthetically Valuable 3-Alkylpentanol Units. Org Lett 2014; 16:2802-5. [DOI: 10.1021/ol500821c] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Mylène Roudier
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
| | - Thierry Constantieux
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
| | - Adrien Quintard
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
| | - Jean Rodriguez
- Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397 Marseille, France
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36
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Zhang HR, Xue JJ, Chen R, Tang Y, Li Y. A bifunctional rosin-derived thiourea catalyzed asymmetric tandem reaction and its new mechanism. CHINESE CHEM LETT 2014. [DOI: 10.1016/j.cclet.2013.12.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Xuan YN, Chen ZY, Yan M. An organocatalytic cascade reaction of 2-nitrocyclohexanone and α,β-unsaturated aldehydes with unusual regioselectivity. Chem Commun (Camb) 2014; 50:10471-3. [DOI: 10.1039/c4cc04298k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An organocatalytic cascade reaction of 2-nitrocyclohexanone and α,β-unsaturated aldehydes was developed.
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Affiliation(s)
- Yi-ning Xuan
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006, China
| | - Zhen-yu Chen
- College of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou 510006, China
| | - Ming Yan
- Industrial Institute of Fine Chemicals and Synthetic Drugs
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006, China
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38
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Scheffler U, Mahrwald R. Recent Advances in Organocatalytic Methods for Asymmetric CC Bond Formation. Chemistry 2013; 19:14346-96. [DOI: 10.1002/chem.201301996] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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39
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Liu Y, Wang Y, Song H, Zhou Z, Tang C. Asymmetric Organocatalytic Cascade Michael/Hemiketalization/Retro-Aldol Reaction of 2-[(E)-2-Nitrovinyl]phenols with 2,4-Dioxo-4-arylbutanoates: A Convenient Access to Chiral α-Keto Esters. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300552] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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40
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Desimoni G, Faita G, Quadrelli P. Substituted (E)-2-Oxo-3-butenoates: Reagents for Every Enantioselectively-Catalyzed Reaction. Chem Rev 2013; 113:5924-88. [DOI: 10.1021/cr4000732] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Desimoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Giuseppe Faita
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
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41
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Zeng X. Recent Advances in Catalytic Sequential Reactions Involving Hydroelement Addition to Carbon–Carbon Multiple Bonds. Chem Rev 2013; 113:6864-900. [DOI: 10.1021/cr400082n] [Citation(s) in RCA: 374] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xiaoming Zeng
- Center for
Organic Chemistry, Frontier Institute of
Science and Technology, Xi’an Jiaotong University, Xi’an, Shaanxi, 710054, P. R. China
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42
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Ding XH, Cui WC, Li X, Ju X, Liu D, Wang S, Yao ZJ. Organocatalytic enantioselective conjugate addition of 2-nitrocyclohexanone to acrylaldehyde: a concise two-step synthesis of chiral building block 1-azaspiro[4.5]decan-6-one. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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43
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Giorgi G, López-Alvarado P, Miranda S, Rodriguez J, Menéndez JC. Michael Additions in Aqueous Media: “On-Water” and “In-Water” Processes from α-Nitro Ketones and Their Anions. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201431] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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44
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Li W, Huang J, Wang J. Organocatalytic conjugate addition promoted by multi-hydrogen-bond cooperation: access to chiral 2-amino-3-nitrile-chromenes. Org Biomol Chem 2013. [DOI: 10.1039/c2ob27102h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Zhang L, Liu H, Yang Y, Chong Z, Feng T, Huang X. The mechanism investigation of the imidazolidinone catalyzed five-membered ring synthesis reaction. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.3073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lili Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry; Jilin University; ChangChun 130023 China
| | - Huiling Liu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry; Jilin University; ChangChun 130023 China
| | - Yuhong Yang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry; Jilin University; ChangChun 130023 China
| | - Zhihui Chong
- School of Pharmaceutical Sciences; Jilin University; Changchun 130023 China
| | - Tingting Feng
- School of Pharmaceutical Sciences; Jilin University; Changchun 130023 China
| | - Xuri Huang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry; Jilin University; ChangChun 130023 China
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46
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Shiri M, Heravi MM, Soleymanifard B. Arylidene pyruvic acids (APAs) in the synthesis of organic compounds. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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47
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Sugimura H, Miyazaki H, Makita Y. Lewis acid-promoted reaction of β,γ-unsaturated α,α-dimethoxy esters with silyl nucleophiles. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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48
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Li W, Liu H, Jiang X, Wang J. Enantioselective Organocatalytic Conjugate Addition of Nitroalkanes to Electrophilic 2-Iminochromenes. ACS Catal 2012. [DOI: 10.1021/cs300313j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wenjun Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3,
Singapore, 117543
| | - Hui Liu
- Shanghai
Key Laboratory of Green
Chemistry and Chemical Process, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Xuefeng Jiang
- Shanghai
Key Laboratory of Green
Chemistry and Chemical Process, East China Normal University, 3663N Zhongshan Road, Shanghai, 200062, China
| | - Jian Wang
- Department of Chemistry, National University of Singapore, 3 Science Drive 3,
Singapore, 117543
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49
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Siau WY, Li W, Xue F, Ren Q, Wu M, Sun S, Guo H, Jiang X, Wang J. Catalytic and Enantioselective α-Functionalization of Oxindoles Through Oxidative Reactions with Naphthoquinones. Chemistry 2012; 18:9491-5. [DOI: 10.1002/chem.201200206] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 05/22/2012] [Indexed: 11/09/2022]
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50
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Tan HR, Ng HF, Chang J, Wang J. Highly Enantioselective Assembly of Functionalized Tetrahydroquinolines with Creation of an All-Carbon Quaternary Center. Chemistry 2012; 18:3865-70. [DOI: 10.1002/chem.201103136] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Indexed: 11/08/2022]
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