1
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Han AJ, Tan Q, He ZT. Palladium-Catalyzed Asymmetric O-1,5-Addition with Oximes via Hydroximation of Unsaturated Esters. Org Lett 2024; 26:89-93. [PMID: 38127266 DOI: 10.1021/acs.orglett.3c03687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Different from electronically matched 1,4- and 1,6-additions, herein, we disclose an electronically mismatched 1,5-conjugate addition process with oximes as the nucleophiles. By this design, the oxime moieties are readily introduced to the γ-position of the electron-deficient substrates in good yields, excellent regioselectivities, and high enantioselectivities. The corresponding allyl oximes are also conveniently transformed into a series of valuable enantioenriched skeletons.
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Affiliation(s)
- Ai-Jun Han
- Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Qitao Tan
- Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Zhi-Tao He
- Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
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2
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Nagaraju S, Sathish K, Kashinath D. Applications of 3,5‐Dialkyl‐4‐nitroisoxazoles and Their Derivatives in Organic Synthesis
#. ChemistrySelect 2021. [DOI: 10.1002/slct.202101719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sakkani Nagaraju
- Department of Chemistry National Institute of Technology Warangal-506 004 India 2677
| | - Kota Sathish
- Department of Chemistry National Institute of Technology Warangal-506 004 India 2677
| | - Dhurke Kashinath
- Department of Chemistry National Institute of Technology Warangal-506 004 India 2677
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3
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Asano K. Multipoint Recognition of Molecular Conformations with Organocatalysts for Asymmetric Synthetic Reactions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200343] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Keisuke Asano
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
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4
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Wang H, Gu S, Yan Q, Ding L, Chen FE. Asymmetric catalysis in synthetic strategies for chiral benzothiazepines. GREEN SYNTHESIS AND CATALYSIS 2020. [DOI: 10.1016/j.gresc.2020.05.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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5
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Hayama N, Kobayashi Y, Sekimoto E, Miyazaki A, Inamoto K, Kimachi T, Takemoto Y. A solvent-dependent chirality-switchable thia-Michael addition to α,β-unsaturated carboxylic acids using a chiral multifunctional thiourea catalyst. Chem Sci 2020; 11:5572-5576. [PMID: 32874501 PMCID: PMC7444369 DOI: 10.1039/d0sc01729a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/14/2020] [Indexed: 01/19/2023] Open
Abstract
An asymmetric thia-Michael addition of arylthiols to α,β-unsaturated carboxylic acids using a thiourea catalyst that bears arylboronic acid and tertiary amine moieties is reported.
An asymmetric thia-Michael addition of arylthiols to α,β-unsaturated carboxylic acids using a thiourea catalyst that bears arylboronic acid and tertiary amine moieties is reported. Both enantiomers of the Michael adducts can be obtained in high enantioselectivity and good yield merely by changing the solvent. The origin of the chirality switch in the products was examined in each solvent via spectroscopic analyses.
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Affiliation(s)
- Noboru Hayama
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan . .,School of Pharmacy and Pharmaceutical Sciences , Mukogawa Women's University , 11-68, 9-Bancho, Koshien , Nishinomiya , Hyogo 663-8179 , Japan
| | - Yusuke Kobayashi
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
| | - Eriko Sekimoto
- School of Pharmacy and Pharmaceutical Sciences , Mukogawa Women's University , 11-68, 9-Bancho, Koshien , Nishinomiya , Hyogo 663-8179 , Japan
| | - Anna Miyazaki
- School of Pharmacy and Pharmaceutical Sciences , Mukogawa Women's University , 11-68, 9-Bancho, Koshien , Nishinomiya , Hyogo 663-8179 , Japan
| | - Kiyofumi Inamoto
- School of Pharmacy and Pharmaceutical Sciences , Mukogawa Women's University , 11-68, 9-Bancho, Koshien , Nishinomiya , Hyogo 663-8179 , Japan
| | - Tetsutaro Kimachi
- School of Pharmacy and Pharmaceutical Sciences , Mukogawa Women's University , 11-68, 9-Bancho, Koshien , Nishinomiya , Hyogo 663-8179 , Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku , Kyoto 606-8501 , Japan .
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6
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Dočekal V, Petrželová S, Císařová I, Veselý J. Enantioselective Cyclopropanation of 4‐Nitroisoxazole Derivatives. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Vojtěch Dočekal
- Department of Organic Chemistry, Faculty of ScienceCharles University Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Simona Petrželová
- Department of Teaching and Didactics of Chemistry, Faculty of ScienceCharles University Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of ScienceCharles University Hlavova 2030/8 128 43 Prague 2 Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of ScienceCharles University Hlavova 2030/8 128 43 Prague 2 Czech Republic
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7
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Rani D, Bhargava M, Agarwal J. Asymmetric Michael Addition of Unactivated Ketones with β‐Nitrostyrenes Mediated by Bifunctional L‐Prolinamide Organocatalysts. ChemistrySelect 2020. [DOI: 10.1002/slct.202000136] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dixita Rani
- Department of Chemistry and Center of Advanced Studies Panjab University Chandigarh 160014 India
| | - Meha Bhargava
- Department of Chemistry and Center of Advanced Studies Panjab University Chandigarh 160014 India
| | - Jyoti Agarwal
- Department of Chemistry and Center of Advanced Studies Panjab University Chandigarh 160014 India
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8
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Yin C, Yang T, Pan Y, Wen J, Zhang X. Rh-Catalyzed Asymmetric Hydrogenation of Unsaturated Medium-Ring NH Lactams: Highly Enantioselective Synthesis of N-Unprotected 2,3-Dihydro-1,5-benzothiazepinones. Org Lett 2020; 22:920-923. [PMID: 31916777 DOI: 10.1021/acs.orglett.9b04478] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A straightforward method to prepare 1,5-benzothiazepines was reported. Catalyzed by a Rh/Zhaophos complex, unsaturated cyclic NH lactams with a medium-size ring were hydrogenated smoothly, giving remarkably high enantioselectivities. The sulfur atom in the substrates did not bring an inhibition which was observed with commercially available bisphosphine ligands. This method was successfully applied in the scale-up synthesis of (R)-(-)-thiazesim.
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Affiliation(s)
- Congcong Yin
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
| | - Tao Yang
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
| | - Yingmin Pan
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
| | - Jialin Wen
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China.,Academy for Advanced Interdisciplinary Studies , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China
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9
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Ray Choudhury A, Mukherjee S. Deconjugated butenolide: a versatile building block for asymmetric catalysis. Chem Soc Rev 2020; 49:6755-6788. [PMID: 32785345 DOI: 10.1039/c9cs00346k] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Deconjugated butenolides have emerged as a popular synthon for the enantioselective synthesis of γ-lactones. This review provides a comprehensive overview on the catalytic asymmetric reactions of deconjugated butenolides reported till date.
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Affiliation(s)
| | - Santanu Mukherjee
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
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10
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Zhu B, Lu B, Zhang H, Xu X, Jiang Z, Chang J. Phase-Transfer-Catalyzed, Enantioselective Vinylogous Conjugate Addition–Cyclization of Olefinic Azlactones To Access Multifunctionalized Chiral Cyclohexenones. Org Lett 2019; 21:3271-3275. [DOI: 10.1021/acs.orglett.9b01001] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bo Zhu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Bohua Lu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Huifang Zhang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Xinyao Xu
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
| | - Zhiyong Jiang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province, Henan University, Jinming Campus, Kaifeng, Henan 475004, P.R. China
| | - Junbiao Chang
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P.R. China
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11
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Buttard F, Berthonneau C, Hiebel MA, Brière JF, Suzenet F. Organocatalytic aza-Michael Reaction to 3-Vinyl-1,2,4-triazines as a Valuable Bifunctional Platform. J Org Chem 2019; 84:3702-3714. [PMID: 30791682 DOI: 10.1021/acs.joc.9b00141] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An unprecedented catalytic aza-Michael addition to substituted 3-vinyl-1,2,4-triazines, as original bifunctional platforms for the domino conjugate addition inverse-electron-demand hetero-Diels-Alder/retro-Diels-Alder ( ihDA/ rDA) reaction, was achieved using the highly acidic triflimide as an organocatalyst. Based on the use of alkoxyamine nucleophiles, this sequence not only highlights a rare example of the catalytic aza-Michael reaction to alkenylazaarenes but also proves to be useful for the elaboration of an array of biorelevant tetrahydro-[1,6]-naphthyridines.
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Affiliation(s)
- Floris Buttard
- Université d'Orléans, CNRS, ICOA, UMR 7311 , Orléans 45067 , France
| | | | | | | | - Franck Suzenet
- Université d'Orléans, CNRS, ICOA, UMR 7311 , Orléans 45067 , France
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12
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Zhang CL, Han YF, Ye S. N-Heterocyclic carbene-catalyzed β-addition of enals to 3-alkylenyloxindoles: synthesis of oxindoles with all-carbon quaternary stereocenters. Chem Commun (Camb) 2019; 55:7966-7969. [PMID: 31219115 DOI: 10.1039/c9cc03099a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The N-heterocyclic carbene-catalyzed β-addition of enals to 3-alkylenyloxindoles was developed. All of the β-aryl, β-alkenyl and β-alkyl enals worked well for the reaction to give the corresponding 3,3-disubstituted oxindoles bearing contiguous all-carbon quaternary and tertiary stereocenters in good yields with moderate to high diastereoselectivities and excellent enantioselectivities.
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Affiliation(s)
- Chun-Lin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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13
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Xia X, Zhu Q, Wang J, Chen J, Cao W, Zhu B, Wu X. Direct Asymmetric Vinylogous Mannich Addition of 3,5-Disubstituted-4-nitroisoxazoles to Isatin-Derived Imines Catalyzed by a Bifunctional Phase-Transfer-Catalyst. J Org Chem 2018; 83:14617-14625. [PMID: 30411890 DOI: 10.1021/acs.joc.8b02439] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Asymmetric Mannich-type addition of 3,5-disubstituted-4-nitroisoxazoles to isatin-derived Boc-protected imines has been realized by using 0.01 equiv of amide phosphonium salt as a phase transfer catalyst. Our current methodology allows for the formation of 3-isoxazolylmethyl-substituted 3-aminooxindoles in excellent yields with good to excellent enantioselectivities. The practical value of this methodology was exemplified by a gram-scale synthesis of 5an, a key intermediate for the formal synthesis (+)-AG-041R.
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Affiliation(s)
- Xuejian Xia
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences , Shanghai University , 99 Shangda Lu , Shanghai 200444 , China
| | - Qiongqiong Zhu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences , Shanghai University , 99 Shangda Lu , Shanghai 200444 , China
| | - Jing Wang
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences , Shanghai University , 99 Shangda Lu , Shanghai 200444 , China
| | - Jie Chen
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences , Shanghai University , 99 Shangda Lu , Shanghai 200444 , China
| | - Weiguo Cao
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences , Shanghai University , 99 Shangda Lu , Shanghai 200444 , China
| | - Bo Zhu
- School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang 453007 , China
| | - Xiaoyu Wu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences , Shanghai University , 99 Shangda Lu , Shanghai 200444 , China
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14
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Meninno S, Quaratesi I, Volpe C, Mazzanti A, Lattanzi A. Catalytic enantioselective one-pot approach to cis- and trans-2,3-diaryl substituted 1,5-benzothiazepines. Org Biomol Chem 2018; 16:6923-6934. [PMID: 30226256 DOI: 10.1039/c8ob01988f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first enantioselective catalytic approach to cis- and trans-2,3-diaryl substituted 1,5-benzothiazepines has been conveniently developed in a one-pot fashion, starting from α,β-unsaturated acyl pyrazoles and 2-aminothiophenol. The organocatalytic two-step sulfa-Michael/lactamization sequence is promoted by a readily available bifunctional thiourea and p-toluenesulfonic acid, respectively. The protocol enables access to both N-unprotected cis- and trans-diastereoisomers in moderate to satisfactory overall yields (up to 84%) and good to excellent ee values (up to 99%). Mechanistic investigations helped to shed light on the regio- and stereoselective outcome of the process.
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia "A. Zambelli", Università di Salerno, Via Giovanni Paolo II 132, I-84084, Fisciano, Italy.
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15
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Dwivedi KD, Marri SR, Nandigama SK, Chowhan RL. An efficient solvent-free synthesis of 3-methyl-4-nitro-5-styrylisoxazoles using solid nano-titania. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1534-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Sharma V, Kaur J, Chimni SS. Chiral Squaramide Catalyzed Enantioselective 1,6-Michael Addition of Pyrazolin-5-ones to Styrylisoxazole Derivatives. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800589] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vivek Sharma
- Department of Chemistry; U. G. C. Centre of Advance Studies in Chemistry; Guru Nanak Dev University; 143005 Amritsar India
| | - Jasneet Kaur
- Department of Chemistry; U. G. C. Centre of Advance Studies in Chemistry; Guru Nanak Dev University; 143005 Amritsar India
| | - Swapandeep S. Chimni
- Department of Chemistry; U. G. C. Centre of Advance Studies in Chemistry; Guru Nanak Dev University; 143005 Amritsar India
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17
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Affiliation(s)
- Keisuke Asano
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
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18
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Sharma V, Bhardwaj VK, Chimni SS. Stereoselective Organocatalytic Synthesis of
γ,γ‐
Disubstituted Butenolides. ChemistrySelect 2018. [DOI: 10.1002/slct.201801217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vivek Sharma
- Department of ChemistryU.G.C. Centre of Advanced StudiesGuru Nanak Dev University Amritsar 143005 India
| | - Vimal K. Bhardwaj
- Department of ChemistryIndian Institute of Technology Ropar Nangal Road Rupnagar 140001 India
| | - Swapandeep S. Chimni
- Department of ChemistryU.G.C. Centre of Advanced StudiesGuru Nanak Dev University Amritsar 143005 India
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19
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Reddy MS, Chowhan LR, Satish Kumar N, Ramesh P, Mukkamala SB. An expedient regio and diastereoselective synthesis of novel spiropyrrolidinylindenoquinoxalines via 1,3-dipolar cycloaddition reaction. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.044] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Rout S, Joshi H, Singh VK. Asymmetric Construction of Remote Vicinal Quaternary and Tertiary Stereocenters via Direct Doubly Vinylogous Michael Addition. Org Lett 2018; 20:2199-2203. [DOI: 10.1021/acs.orglett.8b00493] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Subhrajit Rout
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
| | - Harshit Joshi
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, UP, India
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, MP, India
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21
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Kumar NS, Bheeram VR, Mukkamala SB, Rao LC, Vasantha R. An Efficient and Environmentally Benign Protocol for the 1,6-Michael Addition of Nitroalkanes to 3-Methyl-4-nitro-5-styrylisoxazoles in WERSA. ChemistrySelect 2018. [DOI: 10.1002/slct.201702788] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Nandigama Satish Kumar
- Nanoscience and nanotechnology Laboratory, Department of Chemistry, Gitam Institute of Science; GITAM (Deemed to be University); Visakhapatnam- 530045, Andhrapradesh India
| | - Vema Reddy Bheeram
- Nanoscience and nanotechnology Laboratory, Department of Chemistry, Gitam Institute of Science; GITAM (Deemed to be University); Visakhapatnam- 530045, Andhrapradesh India
| | - Saratchandra Babu Mukkamala
- Nanoscience and nanotechnology Laboratory, Department of Chemistry, Gitam Institute of Science; GITAM (Deemed to be University); Visakhapatnam- 530045, Andhrapradesh India
| | - L. Chandrasekhara Rao
- Department of Chemistry; Rajiv Gandhi University of Knowledge Technologies; Srikakulam- 532402, Andhrapradesh India
| | - R. Vasantha
- School of Chemical Science; Central University of Gujarat; Gandhinagar- 382030, Gujarat. India
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22
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Zhu B, Lee R, Yin Y, Li F, Coote ML, Jiang Z. Enantioselective Vinylogous Amination of 5-Alkyl-4-nitroisoxazoles with a Dipeptide-Based Guanidinium Phase-Transfer Catalyst. Org Lett 2018; 20:429-432. [DOI: 10.1021/acs.orglett.7b03759] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bo Zhu
- Key
Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, 475004, P. R. China
- School
of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P. R. China
| | - Richmond Lee
- ARC Centre of Excellence for Electromaterials Research & Research School of Chemistry, Australian National University, Canberra ACT, 2601, Australia
- Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Yanli Yin
- Key
Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Fuyuan Li
- Key
Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, 475004, P. R. China
| | - Michelle L. Coote
- ARC Centre of Excellence for Electromaterials Research & Research School of Chemistry, Australian National University, Canberra ACT, 2601, Australia
| | - Zhiyong Jiang
- Key
Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan, 475004, P. R. China
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23
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Li F, Pei W, Wang J, Liu J, Wang J, Zhang ML, Chen Z, Liu L. Organocatalytic asymmetric synthesis of compounds bearing both isoxazole and pyrazole moieties via 1,6-addition of pyrazol-5-ones to 3-methyl-4-nitro-5-alkenylisoxazoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00084k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Bifunctional thiourea catalyzed 1,6-addition of pyrazol-5-ones to 3-methyl-4-nitro-5-alkenylisoxazoles to provide the desired products in 72–90% yield and 83–94% ee.
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Affiliation(s)
- Feng Li
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Wenlong Pei
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jingjing Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Jie Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Juan Wang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Ming-liang Zhang
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
| | - Zhiming Chen
- School of Chemistry and Materials Science
- Guizhou Normal University
- Guiyang
- People's Republic of China
| | - Lantao Liu
- Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals
- School of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- People's Republic of China
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24
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Fukata Y, Yao K, Miyaji R, Asano K, Matsubara S. Asymmetric Net Cycloaddition for Access to Diverse Substituted 1,5-Benzothiazepines. J Org Chem 2017; 82:12655-12668. [DOI: 10.1021/acs.joc.7b02451] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yukihiro Fukata
- Department of Material Chemistry, Graduate
School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Koichi Yao
- Department of Material Chemistry, Graduate
School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Ryota Miyaji
- Department of Material Chemistry, Graduate
School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Keisuke Asano
- Department of Material Chemistry, Graduate
School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate
School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo, Kyoto 615-8510, Japan
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25
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Chen XY, Li S, Sheng H, Liu Q, Jafari E, von Essen C, Rissanen K, Enders D. N-Heterocyclic Carbene Catalyzed [3+2] Cycloaddition of Enals with Masked Cinnamates for the Asymmetric One-Pot Synthesis of Adipic Acid Derivatives. Chemistry 2017; 23:13042-13045. [DOI: 10.1002/chem.201703579] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xiang-Yu Chen
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Sun Li
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - He Sheng
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Qiang Liu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Ehsan Jafari
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Carolina von Essen
- Department of Chemistry, Nanoscience Center; University of; Jyvaskyla 40014 JYU Finland
| | - Kari Rissanen
- Department of Chemistry, Nanoscience Center; University of; Jyvaskyla 40014 JYU Finland
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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26
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Meninno S, Volpe C, Lattanzi A. Catalytic Enantioselective Synthesis of Protecting-Group-Free 1,5-Benzothiazepines. Chemistry 2017; 23:4547-4550. [DOI: 10.1002/chem.201700837] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Chiara Volpe
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
| | - Alessandra Lattanzi
- Dipartimento di Chimica e Biologia “A. Zambelli”; Università di Salerno; Via Giovanni Paolo II 84084 Fisciano Italy
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27
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Chauhan P, Kaya U, Enders D. Advances in Organocatalytic 1,6-Addition Reactions: Enantioselective Construction of Remote Stereogenic Centers. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601342] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Uğur Kaya
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Dieter Enders
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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28
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Unhale RA, Molleti N, Rana NK, Dhanasekaran S, Bhandary S, Singh VK. Chiral phosphoric acid catalyzed enantioselective addition of thiols to in situ generated ketimines: Synthesis of N , S -ketals. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2016.11.114] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Affiliation(s)
- Liang Hong
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
| | - Wangsheng Sun
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Dongxu Yang
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Guofeng Li
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
| | - Rui Wang
- School
of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006 China
- Key
Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, 730000 China
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30
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Li W, Schlepphorst C, Daniliuc C, Glorius F. Asymmetric Hydrogenation of Vinylthioethers: Access to Optically Active 1,5-Benzothiazepine Derivatives. Angew Chem Int Ed Engl 2016; 55:3300-3. [DOI: 10.1002/anie.201512032] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Indexed: 01/21/2023]
Affiliation(s)
- Wei Li
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Christoph Schlepphorst
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Constantin Daniliuc
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
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31
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Li W, Schlepphorst C, Daniliuc C, Glorius F. Asymmetrische Hydrierung von Vinylthioethern: Zugang zu optisch aktiven 1,5-Benzothiazepinderivaten. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201512032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wei Li
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Christoph Schlepphorst
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Constantin Daniliuc
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
| | - Frank Glorius
- Westfälische Wilhelms-Universität Münster; Organisch-Chemisches Institut; Corrensstraße 40 48149 Münster Deutschland
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32
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Liu K, Xiong Y, Wang ZF, Tao HY, Wang CJ. Ligand-controlled stereodivergent 1,3-dipolar cycloaddition of azomethine ylides with 3-methyl-4-nitro-5-styrylisoxazoles. Chem Commun (Camb) 2016; 52:9458-61. [DOI: 10.1039/c6cc03169b] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An unprecedented Ag(i)-catalyzed ligand-controlled stereodivergent 1,3-dipolar cycloaddition of azomethine ylides with 3-methyl-4-nitro-5-styrylisoxazoles has been developed to afford heterocycles bearing both methylisoxazole and pyrrolidine moieties.
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Affiliation(s)
- Kang Liu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Yong Xiong
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Zuo-Fei Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Hai-Yan Tao
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072
- China
- State Key Laboratory of Organometallic Chemistry
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33
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34
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Hu F, Szostak M. Recent Developments in the Synthesis and Reactivity of Isoxazoles: Metal Catalysis and Beyond. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500319] [Citation(s) in RCA: 220] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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35
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Chauhan P, Mahajan S, Raabe G, Enders D. Organocatalytic one-pot 1,4-/1,6-/1,2-addition sequence for the stereocontrolled formation of six consecutive stereocenters. Chem Commun (Camb) 2015; 51:2270-2. [PMID: 25563802 PMCID: PMC4612129 DOI: 10.1039/c4cc09730k] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An unprecedented stereoselective organocatalytic one-pot 1,4-/1,6-/1,2-addition sequence between β-dicarbonyl compounds, β-nitroalkenes and 4-nitro-5-styrylisoxazoles sequentially catalyzed by low loading of a squaramide catalyst and an achiral base has been developed. The protocol opens an efficient entry to isoxazole bearing cyclohexanes with six consecutive stereogenic centers including one tetrasubstituted carbon in good yields and excellent diastereo- and enantioselectivities.
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Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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36
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Zhang Y, Wei B, Lin H, Cui W, Zeng X, Fan X. Organocatalyzed Asymmetric Vinylogous Michael Reactions of 3,5-Dialkyl-Substituted 4-Nitroisoxazoles: A Direct Method for the Synthesis of Chiral Isoxazole Derivatives. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400833] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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37
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Monge D, Jiang H, Alvarez-Casao Y. Masked Unsaturated Esters/Amides in Asymmetric Organocatalysis. Chemistry 2015; 21:4494-504. [DOI: 10.1002/chem.201405552] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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38
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Moccia M, Wells RJ, Adamo MFA. An improved procedure to prepare 3-methyl-4-nitroalkylenethylisoxazoles and their reaction under catalytic enantioselective Michael addition with nitromethane. Org Biomol Chem 2015; 13:2192-5. [DOI: 10.1039/c4ob02109f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A two-step preparation of 3-methyl-4-nitro-5-alkylethenyl isoxazoles is herein reported. These were reacted with nitromethane under phase-transfer catalysis to provide highly enantioenriched adducts (up to 93% ee).
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Affiliation(s)
- Maria Moccia
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Robert J. Wells
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Mauro. F. A. Adamo
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
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39
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Nagaraju S, Satyanarayana N, Paplal B, Vasu AK, Kanvah S, Sridhar B, Sripadi P, Kashinath D. One-pot synthesis of functionalized isoxazole–thiolane hybrids via Knoevenagel condensation and domino sulfa-1,6-Michael/intramolecular vinylogous Henry reactions. RSC Adv 2015. [DOI: 10.1039/c5ra16721c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
One-pot synthesis of isoxazole–thiolane hybrids are reported via the Knoevenagel condensation, domino sulfa-1,6-Michael/intramolecular vinylogous Henry reactions using piperidine (30 mol%) with >95% yields in 2–2.5 h overall reaction time.
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Affiliation(s)
- Sakkani Nagaraju
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Neeli Satyanarayana
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Banoth Paplal
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
| | - Anuji K. Vasu
- Department of Chemistry
- Indian Institute of Technology, Gandhinagar
- Ahmedabad
- India
| | - Sriram Kanvah
- Department of Chemistry
- Indian Institute of Technology, Gandhinagar
- Ahmedabad
- India
| | - Balasubramanian Sridhar
- X-ray Crystallography Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad – 500007
- India
| | - Prabhakar Sripadi
- National Centre for Mass Spectrometry
- CSIR-Indian Institute of Chemical Technology
- Hyderabad – 500007
- India
| | - Dhurke Kashinath
- Department of Chemistry
- National Institute of Technology
- Warangal-506 004
- India
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40
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Disetti P, Moccia M, Salazar Illera D, Suresh S, Adamo MFA. Catalytic enantioselective addition of isocyanoacetate to 3-methyl-4-nitro-5-styrylisoxazoles under phase transfer catalysis conditions. Org Biomol Chem 2015; 13:10609-12. [DOI: 10.1039/c5ob01880c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The reaction between 3-methyl-4-nitro-5-styrylisoxazoles and ethyl isocyanoacetate proceeded under PTC to give enantioenriched monoadducts in high ee (up to 99%).
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Affiliation(s)
- Paolo Disetti
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Maria Moccia
- National Research Council-Institute of Crystallography
- 70126 Bari
- Italy
| | - Diana Salazar Illera
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Surisetti Suresh
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
| | - Mauro F. A. Adamo
- Centre for Synthesis and Chemical Biology (CSCB)
- Department of Pharmaceutical and Medicinal Chemistry
- Royal College of Surgeons in Ireland
- Dublin 2
- Ireland
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41
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Zheng L, Qiao Y, Lu M, Chang J. Theoretical investigations of the reaction between 1,4-dithiane-2,5-diol and azomethine imines: mechanisms and diastereoselectivity. Org Biomol Chem 2015; 13:7558-69. [DOI: 10.1039/c5ob00807g] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The detailed mechanism of the DABCO-catalyzed reaction between 1,4-dithiane-2,5-diol and azomethine imines.
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Affiliation(s)
- Linjie Zheng
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Yan Qiao
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
| | - Mengxue Lu
- The College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Junbiao Chang
- Department of Pathophysiology
- School of Basic Medical Sciences
- Zhengzhou University
- Zhengzhou
- China
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42
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Wang R, Xu J. Enantioselective Sulfur-MichaelAddition of Thioacetic Acid to Nitroalkenes Catalyzed by Bifunctional Amine-Thiourea Catalysts. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201400125] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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43
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Wang R, Liu J, Xu J. Organocatalytic Enantioselective Sulfur-Michael Addition of Thioacetic Acid to Arylmethylidenemalonates. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400664] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Li Y, López-Delgado FJ, Jørgensen DKB, Nielsen RP, Jiang H, Jørgensen KA. Trienamine-mediated asymmetric [4+2]-cycloaddition of α,β-unsaturated ester surrogates applying 4-nitro-5-styrylisoxazoles. Chem Commun (Camb) 2014; 50:15689-91. [DOI: 10.1039/c4cc08171d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Chauhan P, Mahajan S, Enders D. Organocatalytic carbon-sulfur bond-forming reactions. Chem Rev 2014; 114:8807-64. [PMID: 25144663 DOI: 10.1021/cr500235v] [Citation(s) in RCA: 457] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pankaj Chauhan
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 , 52074 Aachen, Germany
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46
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Kawai H, Shibata N. Asymmetric Synthesis of Agrochemically Attractive Trifluoromethylated Dihydroazoles and Related Compounds under Organocatalysis. CHEM REC 2014; 14:1024-40. [DOI: 10.1002/tcr.201402023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Science and Department of Frontier Materials; Graduate School of Engineering; Nagoya Institute of Technology; Gokiso Showa-ku Nagoya 466-8555 Japan
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47
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Akagawa K, Nishi N, Sen J, Kudo K. Peptide-catalyzed consecutive 1,6- and 1,4-additions of thiols to α,β,γ,δ-unsaturated aldehydes. Org Biomol Chem 2014; 12:3581-5. [PMID: 24769865 DOI: 10.1039/c4ob00565a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Regio- and enantioselective addition of thiols to α,β,γ,δ-unsaturated aldehydes was performed with a resin-supported peptide catalyst. It was shown that a 1,4-adduct was generated mainly at the initial stage of the reaction, and this was eventually converted to a thermodynamically stable 1,6- and 1,4-diadduct through retro-addition/addition reactions.
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Affiliation(s)
- Kengo Akagawa
- Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
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48
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49
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Organocatalytic diastereo- and enantioselective sulfa-Michael addition to α,β-disubstituted nitroalkenes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.125] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Yang HJ, Xiong FJ, Chen XF, Chen FE. Highly Enantioselective Thiolysis of Prochiral Cyclic Anhydrides Catalyzed by Amino Alcohol Bifunctional Organocatalysts and Its Application to the Synthesis of Pregabalin. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300464] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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