1
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Šebesta R, Veverková E, Molnosiová P. Asymmetric Sequential Michael Addition and Cyclization Reactions of 2-(2-Nitrovinyl)phenols Catalyzed by Bifunctional Amino-Squaramides. SYNOPEN 2021. [DOI: 10.1055/s-0040-1719843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
AbstractIn this work, we describe the Michael addition–cyclization reaction of 2-(2-nitrovinyl)phenol with two different reactive Michael donors, which lead to chiral benzopyran derivatives. Specifically, bifunctional amino-squaramides with one or two chiral units in the side chains were evaluated as catalysts in these transformations. Furthermore, the utility of selected green solvents as reaction media for these processes was also tested. The best result was achieved with methyl-cyclopentanone-2-carboxylate as the Michael donor in ethyl (–)-l-lactate with quinine-based amino-squaramide as catalyst (yield 72%, dr >99:1, ee 99%).
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2
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Zhu DX, Liu JG, Xu MH. Stereodivergent Synthesis of Enantioenriched 2,3-Disubstituted Dihydrobenzofurans via a One-Pot C-H Functionalization/Oxa-Michael Addition Cascade. J Am Chem Soc 2021; 143:8583-8589. [PMID: 34061536 DOI: 10.1021/jacs.1c03498] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A one-pot rhodium-catalyzed C-H functionalization/organocatalyzed oxa-Michael addition cascade reaction has been developed. This methodology enables the stereodivergent synthesis of diverse 2,3-disubstituted dihydrobenzofurans with broad functional group compatibility in good yields with high levels of stereoselectivity under exceptionally mild conditions. The full complement of stereoisomers of chiral 2,3-disubstituted dihydrobenzofurans and 3,4-disubstituted isochromans could be accessed at will by appropriate permutations of the two chiral catalysts. The current work provides a rare example of two chiral catalysts independently controlling two contiguous stereogenic centers subsequently via a two-step reaction in a single operation.
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Affiliation(s)
- Dong-Xing Zhu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, People's Republic of China
| | - Jian-Guo Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, People's Republic of China
| | - Ming-Hua Xu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen 518055, People's Republic of China
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3
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Feng J, Wang S, Feng J, Li Q, Yue J, Yue G, Zou P, Wang G. Mild and efficient synthesis of trans-3-aryl-2-nitro-2,3-dihydrobenzofurans on water. NEW J CHEM 2020. [DOI: 10.1039/d0nj00548g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A protocol to prepare trans-3-aryl-2-nitro-2,3-dihydrobenzofurans has been developed on water. The protocol avoids the use of toxic solvents, tedious work-up procedures, and chromatographic separation.
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Affiliation(s)
- Juhua Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Siyuan Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Jinxiang Feng
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Qiuju Li
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Junping Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guizhou Yue
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Ping Zou
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
| | - Guangtu Wang
- College of Science
- Sichuan Agricultural University
- Ya’an
- P. R. China
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4
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NHC-catalysed enantioselective intramolecular formal [4+2] cycloadditions using carboxylic acids as azolium enolate precursors. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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5
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Chavan LN, Mainkar PS, Chandrasekhar S. Organocatalytic Asymmetric Synthesis of Tetrahydrofuran and 1,2-Dihydrobenzofuran Scaffolds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Lahu N. Chavan
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
| | - Prathama S. Mainkar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
| | - S. Chandrasekhar
- Department of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; 500007 Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 201 002 Uttar Pradesh Ghaziabad India
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6
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Modrocká V, Veverková E, Mečiarová M, Šebesta R. Bifunctional Amine-Squaramides as Organocatalysts in Michael/Hemiketalization Reactions of β,γ-Unsaturated α-Ketoesters and α,β-Unsaturated Ketones with 4-Hydroxycoumarins. J Org Chem 2018; 83:13111-13120. [PMID: 30277392 DOI: 10.1021/acs.joc.8b01847] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The catalytic efficiency of various amine-squaramides was tested in Michael/hemiketalization reactions of 4-hydroxycoumarines with two types of enones. Tertiary amine-squaramide organocatalysts afforded the best results regarding both activity and enantioselectivity when β,γ-unsaturated α-ketoesters were used as the Michael acceptors (yields up to 98%, enantioselectivities up to 90% ee). On the other hand, the primary amine-squaramides are the best choice for related reactions of 4-hydroxycoumarins with enones. The corresponding pyrano[3,2- c]chromen-5-on products were obtained in high enantiomeric purities (up to 96%). The Michael addition of 4-hydroxycoumarin to 4-phenylbut-3-en-2-on directly produced chiral anticoagulant drug ( S)-warfarin in 92% ee when green solvent 2-MeTHF and catalyst ( S, S)-C8 were used. Moreover, an enantiomeric catalyst ( R, R)-C8 gave ( R)-warfarin in >99% ee.
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Affiliation(s)
- Viktória Modrocká
- Faculty of Natural Sciences, Department of Organic Chemistry , Comenius University in Bratislava , Mlynska dolina, Ilkovičova 6 , SK-84215 Bratislava , Slovakia
| | - Eva Veverková
- Faculty of Natural Sciences, Department of Organic Chemistry , Comenius University in Bratislava , Mlynska dolina, Ilkovičova 6 , SK-84215 Bratislava , Slovakia
| | - Mária Mečiarová
- Faculty of Natural Sciences, Department of Organic Chemistry , Comenius University in Bratislava , Mlynska dolina, Ilkovičova 6 , SK-84215 Bratislava , Slovakia
| | - Radovan Šebesta
- Faculty of Natural Sciences, Department of Organic Chemistry , Comenius University in Bratislava , Mlynska dolina, Ilkovičova 6 , SK-84215 Bratislava , Slovakia
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7
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Paz BM, Li Y, Thøgersen MK, Jørgensen KA. Enantioselective synthesis of cyclopenta[ b]benzofurans via an organocatalytic intramolecular double cyclization. Chem Sci 2017; 8:8086-8093. [PMID: 29568457 PMCID: PMC5855134 DOI: 10.1039/c7sc03006a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Accepted: 09/30/2017] [Indexed: 12/16/2022] Open
Abstract
An enantioselective organocatalytic strategy, combining Brønsted base and N-heterocyclic carbene catalysis in a unique manner, is demonstrated for a concise construction of the privileged cyclopenta[b]benzofuran scaffold, present in many bioactive compounds having both academic and commercial interests. The reaction concept relies on an intramolecular one-pot double cyclization involving a cycle-specific enantioselective Michael addition followed by a benzoin condensation of ortho-substituted cinnamaldehydes. Cyclopenta[b]benzofurans were achieved in moderate to good yields, with excellent stereoselectivities. A proof of principle for a diastereodivergent variation is demonstrated through the synthesis of cyclopenta[b]benzofurans containing two contiguous aromatic substituents in a substitution pattern present in commercial and natural compounds. Furthermore, several transformations have been performed, demonstrating the synthetic utility of the products. Finally, insights into the activation mode and stereoindution models are presented for this new synthetic strategy.
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Affiliation(s)
- Bruno Matos Paz
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark .
| | - Yang Li
- Department of Chemistry , Aarhus University , DK-8000 Aarhus C , Denmark .
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8
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Esumi N, Nishimoto Y, Yasuda M. First anti
-Selective Direct Michael Addition of α-Alkoxy Ketones to Enones by Cooperative Catalysis of Samarium(III) Trifluoromethanesulfonate and Tributyltin Methoxide. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Naoto Esumi
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1, Yamada-oka 565-0871 Suita, Osaka Japan
| | - Yoshihiro Nishimoto
- Frontier Research Base for Global Young Researchers Center for Open Innovation Research and Education (COiRE); Graduate School of Engineering; Osaka University; 2-1, Yamada-oka 565-0871 Suita, Osaka Japan
| | - Makoto Yasuda
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1, Yamada-oka 565-0871 Suita, Osaka Japan
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9
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Zhao B, Li J, Du D. Squaramide‐Catalyzed Asymmetric Reactions. CHEM REC 2017; 17:994-1018. [DOI: 10.1002/tcr.201600140] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 02/27/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Bo‐Liang Zhao
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Jun‐Hua Li
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Da‐Ming Du
- School of Chemistry and Chemical EngineeringBeijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 People's Republic of China
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10
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Barrios Antúnez DJ, Greenhalgh MD, Fallan C, Slawin AMZ, Smith AD. Enantioselective synthesis of 2,3-disubstituted trans-2,3-dihydrobenzofurans using a Brønsted base/thiourea bifunctional catalyst. Org Biomol Chem 2016; 14:7268-74. [DOI: 10.1039/c6ob01326k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The enantioselective synthesis of 2,3-disubstituted trans-2,3-dihydrobenzofuran derivatives via intramolecular Michael addition has been developed using a bifunctional tertiary amine–thiourea catalyst.
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Affiliation(s)
| | | | - Charlene Fallan
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Andrew D. Smith
- EaStCHEM
- School of Chemistry
- University of St Andrews
- St Andrews
- UK
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11
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Pan J, Wang Y, Chen S, Zhang X, Wang Y, Zhou Z. Stereocontrolled construction of 2-(3-indolyl)chromane scaffolds via organocatalyzed cascade Michael addition-hemiketalization followed by Friedel–Crafts alkylation reaction. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.11.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Chauhan P, Mahajan S, Kaya U, Hack D, Enders D. Bifunctional Amine-Squaramides: Powerful Hydrogen-Bonding Organocatalysts for Asymmetric Domino/Cascade Reactions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401003] [Citation(s) in RCA: 412] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Zheng Y, Wang Y, Zhou Z. Organocatalytic multicomponent synthesis of polysubstituted pyrroles from 1,2-diones, aldehydes and arylamines. Chem Commun (Camb) 2015; 51:16652-5. [DOI: 10.1039/c5cc05624a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We have developed an organocatalyzed three-component reaction of 1,2-diones, aldehydes and arylamines, which provides an efficient approach to access polysubstituted pyrroles.
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Affiliation(s)
- Yin Zheng
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University
- Tianjin 300071
- P. R. China
| | - Youming Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University
- Tianjin 300071
- P. R. China
| | - Zhenghong Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering Nankai University
- Tianjin 300071
- P. R. China
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14
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Cui LY, Wang YH, Chen SR, Wang YM, Zhou ZH. Stereocontrolled construction of 3H-furo[3,4-b]chromen-1(9H)-one scaffolds via organocatalyzed Michael addition and the following intramolecular dehydration. RSC Adv 2015. [DOI: 10.1039/c5ra17503h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stereocontrolled construction of 3H-furo[3,4-b]chromen-1(9H)-one scaffolds has been realized via chiral squaramide catalyzed asymmetric Michael addition of tetronic acid to 2-((E)-2-nitrovinyl)phenols and the subsequent intramolecular dehydration.
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Affiliation(s)
- L.-Y. Cui
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
| | - Y.-H. Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
| | - S.-R. Chen
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
| | - Y.-M. Wang
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
| | - Z.-H. Zhou
- Institute and State Key Laboratory of Elemento-Organic Chemistry
- P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300071
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15
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Chen S, Pan J, Wang Y, Zhou Z. Stereocontrolled Construction of the 3,4-Dihydrothiacarbazol-2(9H)-one Skeleton by Using Bifunctional Squaramide-Catalyzed Cascade Reactions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403078] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Duan Y, Wang Y, Li D. A Facile Approach for Synthesis of Benzofuro[2,3-c]pyridinesviaIntramolecular Cascade Annulations. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Chiral bifunctional squaramide catalyzed asymmetric Michael addition of ethyl α-nitroacetate to β,γ-unsaturated α-ketoesters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Jiang S, Hu B, Yu X, Deng W. Fc-PIP Catalyzed Asymmetric Synthesis ofcis-2,3-Dihydrobenzofurans. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400186] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Affiliation(s)
- Xiang Ni
- State Key
Laboratory of Elemento-Organic
Chemistry, Department of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
| | - Xin Li
- State Key
Laboratory of Elemento-Organic
Chemistry, Department of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
| | - Zhen Wang
- State Key
Laboratory of Elemento-Organic
Chemistry, Department of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
| | - Jin-Pei Cheng
- State Key
Laboratory of Elemento-Organic
Chemistry, Department of Chemistry, Nankai University, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300071, China
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Wu L, Wang Y, Song H, Tang L, Zhou Z, Tang C. Organocatalyzed Highly Diastereo- and Enantioselective Tandem Sulfa-Michael-Mannich Reaction of 2-Mercaptoquinoline-3-carbaldimines with Maleimides. ChemCatChem 2014. [DOI: 10.1002/cctc.201300993] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Hu K, Wang Y, Zhou Z, Tang C. Novel thiophosphonodiamides as efficient hydrogen bond donor catalysts in tandem Michael addition–cyclization of malononitrile and 2-(E)-2-nitrovinylphenols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.099] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Tsakos M, Kokotos CG. Primary and secondary amine-(thio)ureas and squaramides and their applications in asymmetric organocatalysis. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.080] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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23
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Hu K, Lu A, Wang Y, Zhou Z, Tang C. Chiral bifunctional squaramide catalyzed asymmetric tandem Michael-cyclization reaction: efficient synthesis of optically active 2-amino-4H-chromene-3-carbonitrile derivatives. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.07.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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