1
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Wu DP, Ou W, Huang PQ. Ir-Catalyzed Chemoselective Reductive Condensation Reactions of Tertiary Amides with Active Methylene Compounds. Org Lett 2022; 24:5366-5371. [PMID: 35849542 DOI: 10.1021/acs.orglett.2c02045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The catalytic reductive condensation reactions of tertiary amides with active methylene compounds leading to multifunctionalized non-N-containing products is described. The reactions proceed through sequential iridium-catalyzed hydrosilylation of the amides followed by acid-mediated condensation with the active methylene compounds. This scalable method is broad in scope and shows remarkable chemoselectivity for the amide group in the presence of several sensitive or even more reactive functionalities such as ester, cyano, nitro, silyl dienol ether, and ketone.
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Affiliation(s)
- Dong-Ping Wu
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Wei Ou
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry, Fujian Provincial Key Laboratory of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
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2
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Wu S, Dong J, Zhou D, Wang W, Liu L, Zhou Y. Phosphorous Acid-Catalyzed Alkylation of Phenols with Alkenes. J Org Chem 2020; 85:14307-14314. [PMID: 31875676 DOI: 10.1021/acs.joc.9b03028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A H3PO3-catalyzed alkylation of phenols with alkenes is achieved in a facile, efficient, and selective manner. The reaction shows a unique selectivity, i.e., excellent regioselectivity, thorough suppression of overalkylation, without alkylation of a simple phenyl ring, and can selectively provide ortho-, meta-, or para-alkylated phenol derivatives in good to excellent yields. This feature along with mild reaction conditions, sensitive functional group tolerance, and scale-up synthesis and late modification of phenolic bioactive compounds make it an ideal and practical alternative for the modification of phenols.
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Affiliation(s)
- Shaofeng Wu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jianyu Dong
- Department of Educational Science, Hunan First Normal University, Changsha 410205, China
| | - Dan Zhou
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Wan Wang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Long Liu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.,Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Yongbo Zhou
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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3
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Nielsen CDT, White AJP, Sale D, Bures J, Spivey AC. Hydroarylation of Alkenes by Protonation/Friedel–Crafts Trapping: HFIP-Mediated Access to Per-aryl Quaternary Stereocenters. J Org Chem 2019; 84:14965-14973. [DOI: 10.1021/acs.joc.9b02393] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christian D.-T. Nielsen
- Imperial College London, White City Campus,
Molecular Sciences Research Hub (MSRH), 80 Wood Lane, London W12 0BZ, United Kingdom
| | - Andrew J. P. White
- Imperial College London, White City Campus,
Molecular Sciences Research Hub (MSRH), 80 Wood Lane, London W12 0BZ, United Kingdom
| | - David Sale
- Process Studies Group, Syngenta, Jealott’s Hill, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Jordi Bures
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Alan C. Spivey
- Imperial College London, White City Campus,
Molecular Sciences Research Hub (MSRH), 80 Wood Lane, London W12 0BZ, United Kingdom
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4
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Affiliation(s)
- Jordan N. Bentley
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
| | - Christopher B. Caputo
- Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
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5
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Novikov RA, Denisov DA, Potapov KV, Tkachev YV, Shulishov EV, Tomilov YV. Ionic Ga-Complexes of Alkylidene- and Arylmethylidenemalonates and Their Reactions with Acetylenes: An In-Depth Look into the Mechanism of the Occurring Gallium Chemistry. J Am Chem Soc 2018; 140:14381-14390. [DOI: 10.1021/jacs.8b08913] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Roman A. Novikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 32 Vavilov Street, 119991 Moscow, Russian Federation
| | - Dmitry A. Denisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Konstantin V. Potapov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Yaroslav V. Tkachev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 32 Vavilov Street, 119991 Moscow, Russian Federation
| | - Evgeny V. Shulishov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
| | - Yury V. Tomilov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospekt, 119991 Moscow, Russian Federation
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6
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Han X, Ye C, Chen F, Chen Q, Wang Y, Zeng X. A highly enantioselective Friedel–Crafts reaction of 3,5-dimethoxylphenol with nitroolefins mediated by a bifunctional quinine derived thiourea catalyst. Org Biomol Chem 2017; 15:3401-3407. [DOI: 10.1039/c7ob00372b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A useful and highly enantioselective Friedel–Crafts reaction of 3,5-dimethoxylphenol with nitroolefins catalyzed by a bifunctional quinine derived thiourea catalyst was developed.
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Affiliation(s)
- Xiaoyu Han
- Zhejiang Provincial Key Laboratory for Chemical & Biological Processing Technology of Farm Products
- School of Biological and Chemical Engineering/School of Light Industry
- Zhejiang University of Science and Technology
- Hangzhou
- China
| | - Can Ye
- Zhejiang Provincial Key Laboratory for Chemical & Biological Processing Technology of Farm Products
- School of Biological and Chemical Engineering/School of Light Industry
- Zhejiang University of Science and Technology
- Hangzhou
- China
| | - Fenfen Chen
- Zhejiang Provincial Key Laboratory for Chemical & Biological Processing Technology of Farm Products
- School of Biological and Chemical Engineering/School of Light Industry
- Zhejiang University of Science and Technology
- Hangzhou
- China
| | - Qu Chen
- Zhejiang Provincial Key Laboratory for Chemical & Biological Processing Technology of Farm Products
- School of Biological and Chemical Engineering/School of Light Industry
- Zhejiang University of Science and Technology
- Hangzhou
- China
| | - Yongjiang Wang
- Zhejiang Provincial Key Laboratory for Chemical & Biological Processing Technology of Farm Products
- School of Biological and Chemical Engineering/School of Light Industry
- Zhejiang University of Science and Technology
- Hangzhou
- China
| | - Xiaofei Zeng
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- P. R. China
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7
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Yamazaki S, Sugiura H, Ohashi S, Ishizuka K, Saimu R, Mikata Y, Ogawa A. Intramolecular [2 + 2] and [4 + 2] Cycloaddition Reactions of Cinnamylamides of Ethenetricarboxylate in Sequential Processes. J Org Chem 2016; 81:10863-10886. [PMID: 27723343 DOI: 10.1021/acs.joc.6b01947] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Intramolecular [2 + 2] and [4 + 2] cycloaddition reactions of cinnamylamides of ethenetricarboxylate in sequential processes have been studied. Reaction of 1,1-diethyl 2-hydrogen ethenetricarboxylate and trans-cinnamylamines in the presence of EDCI/HOBt/Et3N led to pyrrolidine products in one pot, via intramolecular [2 + 2], [4 + 2], and some other cyclizations. The types of the products depend on the substituents on the benzene ring and the reaction conditions. Reaction of cinnamylamines without substituents on the benzene ring and with halogens and OMe on the para position at room temperature gave cyclobutane-fused pyrrolidines as major products via [2 + 2] cycloaddition. The reaction at 80 °C in 1,2-dichloroethane gave δ-lactone fused pyrrolidines as major products, probably via ring-opening of the cyclobutanes. Interestingly, reaction of 1,1-diethyl 2-hydrogen ethenetricarboxylate and cinnamylamines bearing electron-withdrawing groups such as NO2, CN, CO2Me, CO2Et, and CF3 on ortho and para positions in the presence of EDCI/HOBt/Et3N at room temperature or at 60-80 °C gave tetrahydrobenz[f]isoindolines via [4 + 2] cycloaddition as major products. DFT studies have been performed to explained the observed [2 + 2]/[4 + 2] selectivity.
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Affiliation(s)
- Shoko Yamazaki
- Department of Chemistry, Nara University of Education , Takabatake-cho, Nara 630-8528, Japan
| | - Hirotaka Sugiura
- Department of Chemistry, Nara University of Education , Takabatake-cho, Nara 630-8528, Japan.,Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Shinnosuke Ohashi
- Department of Chemistry, Nara University of Education , Takabatake-cho, Nara 630-8528, Japan
| | - Keisuke Ishizuka
- Department of Chemistry, Nara University of Education , Takabatake-cho, Nara 630-8528, Japan
| | - Rina Saimu
- Department of Chemistry, Nara University of Education , Takabatake-cho, Nara 630-8528, Japan
| | - Yuji Mikata
- KYOUSEI Science Center, Nara Women's University , Nara 630-8506, Japan
| | - Akiya Ogawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University , Gakuen-cho 1-1, Nakaku, Sakai, Osaka 599-8531, Japan
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8
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9
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Niharika P, Satyanarayana G. One-pot C–C/C–O bond formation: synthesis of spirocyclic lactones. RSC Adv 2016. [DOI: 10.1039/c5ra22684h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
An efficient and practical method for the synthesis of novel spiro(tri or tetra)cyclic lactones via the formation of C–C and C–O bonds in one-pot is presented.
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Affiliation(s)
- Pedireddi Niharika
- Department of Chemistry
- Indian Institute of Technology, Hyderabad
- Kandi – 502 285
- India
| | - Gedu Satyanarayana
- Department of Chemistry
- Indian Institute of Technology, Hyderabad
- Kandi – 502 285
- India
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10
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Yamazaki S, Sugiura H, Niina M, Mikata Y, Ogawa A. Inter- and Intramolecular Diels-Alder Reaction of Ethenetricarboxylate Derivatives. HETEROCYCLES 2016. [DOI: 10.3987/com-15-13394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Medina FG, Marrero JG, Macías-Alonso M, González MC, Córdova-Guerrero I, Teissier García AG, Osegueda-Robles S. Coumarin heterocyclic derivatives: chemical synthesis and biological activity. Nat Prod Rep 2015; 32:1472-507. [PMID: 26151411 DOI: 10.1039/c4np00162a] [Citation(s) in RCA: 306] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review highlights the broad range of science that has arisen from the synthesis of coumarin-linked and fused heterocycle derivatives. Specific topics include their synthesis and biological activity.
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Affiliation(s)
- Fernanda G Medina
- Instituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Ingeniería Campus Guanajuato, Av. Mineral de Valenciana, No. 200, Col. Fracc. Industrial Puerto Interior, C.P. 36275 Silao de la Victoria, Guanajuato, Mexico.
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12
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Bartolomeu ADA, de Menezes ML, Silva-Filho LCD. Chemoselective Condensation of β-Naphthol, Dimethyl Malonate, and Aromatic Aldehydes Promoted by Niobium Pentachloride. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2014.999341] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Aloisio de Andrade Bartolomeu
- Department of Chemistry, Faculty of Sciences, Laboratory of Organic Synthesis and Processes (LaOSP), São Paulo State University (UNESP), São Paulo, Brazil
| | - Manoel Lima de Menezes
- Department of Chemistry, Faculty of Sciences, Laboratory of Organic Synthesis and Processes (LaOSP), São Paulo State University (UNESP), São Paulo, Brazil
| | - Luiz Carlos da Silva-Filho
- Department of Chemistry, Faculty of Sciences, Laboratory of Organic Synthesis and Processes (LaOSP), São Paulo State University (UNESP), São Paulo, Brazil
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13
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Kamat DP, Tilve SG, Kamat VP, Kirtany JK. Syntheses and Biological Activities of Chroman-2-ones. A Review. ORG PREP PROCED INT 2015. [DOI: 10.1080/00304948.2015.983805] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Srivastava A, Biswas S, Singh S, Mobin SM, Samanta S. Organocatalysed Michael addition on arylmethylidenemalonates involving 4-(2-nitrophenyl)acetoacetate: diversity-oriented access to 8,9-dihydropyrido[1,2-a]indol-6(7H)-one and salicylate scaffolds. RSC Adv 2015. [DOI: 10.1039/c5ra01430a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
A diversity-oriented synthesis of 8,9-dihydropyrido[1,2-a]indol-6(7H)-one and salicylate scaffolds was achieved in high yields with excellent diastereoselectivities (≤96 : 4 dr) via an organocatalytic reaction of alkylidene malonates with 4-(2-nitrophenyl) acetoacetate.
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15
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Engl OD, Fritz SP, Käslin A, Wennemers H. Organocatalytic Route to Dihydrocoumarins and Dihydroquinolinones in All Stereochemical Configurations. Org Lett 2014; 16:5454-7. [DOI: 10.1021/ol502697s] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Oliver D. Engl
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Sven P. Fritz
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Alexander Käslin
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
| | - Helma Wennemers
- ETH Zürich, Laboratory for Organic Chemistry, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland
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16
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Li XH, Fang P, Chen D, Hou XL. Kinetic resolution of 4-substituted-3,4-dihydrocoumarins via Pd-catalyzed asymmetric allylic alkylation reaction: enantioselective synthesis of trans-3,4-disubstituted-3,4-dihydrocoumarins. Org Chem Front 2014. [DOI: 10.1039/c4qo00178h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Synthesis of 4-(thien-2-yl)-substituted coumarins through Lewis acid catalyzed Michael addition of thiophenes to 3-benzoylcoumarins followed by oxidation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.04.112] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Niharika P, Ramulu BV, Satyanarayana G. Lewis acid promoted dual bond formation: facile synthesis of dihydrocoumarins and spiro-tetracyclic dihydrocoumarins. Org Biomol Chem 2014; 12:4347-60. [DOI: 10.1039/c4ob00490f] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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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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20
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Joo JH, Youn SW. Domino Hydroarylation-Cyclization Reaction: One-Pot Synthesis of Indane-Fused 3,4-Dihydrocoumarins. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Sajna KV, Kumara Swamy KC. Allenylphosphonates/Allenylphosphine Oxides as Intermediates/Precursors for Intramolecular Cyclization Leading to Phosphorus-Based Indenes, Indenones, Benzofurans, and Isochromenes. J Org Chem 2012; 77:5345-56. [DOI: 10.1021/jo300705f] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- K. V. Sajna
- School
of Chemistry, University of Hyderabad, Hyderabad 500
046, A. P., India
| | - K. C. Kumara Swamy
- School
of Chemistry, University of Hyderabad, Hyderabad 500
046, A. P., India
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22
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Peng S, Wang L, Guo H, Sun S, Wang J. Facile synthesis of 4-substituted 3,4-dihydrocoumarins via an organocatalytic double decarboxylation process. Org Biomol Chem 2012; 10:2537-41. [PMID: 22366754 DOI: 10.1039/c2ob25075f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3,4-Dihydrocoumarins, considered to be valuable building blocks, have attracted considerable attention due to their various biological activities. Herein, we have documented an efficient and convenient double decarboxylation process for the synthesis of 4-substituted 3,4-dihydrocoumarin in moderate to excellent yields under mild reaction conditions (up to 98%).
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Affiliation(s)
- Shiyong Peng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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23
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Hong BC, Kotame P, Lee GH. Asymmetric Synthesis of 3,4-Dihydrocoumarin Motif with an All-Carbon Quaternary Stereocenter via a Michael–Acetalization Sequence with Bifunctional Amine-thiourea Organocatalysts. Org Lett 2011; 13:5758-61. [DOI: 10.1021/ol202331j] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Bor-Cherng Hong
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C., and Instrumentation Center, National Taiwan University, Taipei, 106, Taiwan, R.O.C
| | - Prakash Kotame
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C., and Instrumentation Center, National Taiwan University, Taipei, 106, Taiwan, R.O.C
| | - Gene-Hsiang Lee
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, 621, Taiwan, R.O.C., and Instrumentation Center, National Taiwan University, Taipei, 106, Taiwan, R.O.C
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24
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First and mild synthesis of fluorene-9-malonic acid and some substituted derivatives via the intramolecular hydroarylation of 2-phenylbenzylidenemalonic acids. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Hong BC, Kotame P, Liao JH. Enantioselective organocatalytic domino Michael–acetalization–Henry reactions of 2-hydroxynitrostyrene and aldehyde for the synthesis of tetrahydro-6H-benzo[c]chromenones. Org Biomol Chem 2011; 9:382-6. [DOI: 10.1039/c0ob00834f] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Six-Membered Ring Systems:. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s0959-6380(11)22015-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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27
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Lu D, Li Y, Gong Y. Organocatalytic Asymmetric Tandem Michael Addition−Hemiacetalization: A Route to Chiral Dihydrocoumarins, Chromanes, and 4H-Chromenes. J Org Chem 2010; 75:6900-7. [DOI: 10.1021/jo101446d] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Dengfu Lu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Yajun Li
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People's Republic of China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, People's Republic of China
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28
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Chattopadhyay K, Jana R, Day VW, Douglas JT, Tunge JA. Mechanistic origin of the stereodivergence in decarboxylative allylation. Org Lett 2010; 12:3042-5. [PMID: 20533852 PMCID: PMC2913676 DOI: 10.1021/ol101042x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A stereochemical test has been used to probe the mechanism of decarboxylative allylation. This probe suggests that the mechanism of DcA reactions can change based on the substitution pattern at the alpha-carbon of the nucleophile; however, reaction via stabilized malonate nucleophiles is the lower energy pathway. Lastly, this mechanistic proposal has predictive power and can be used to explain chemoselectivities in decarboxylative reactions that were previously confounding.
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Affiliation(s)
| | - Ranjan Jana
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Victor W. Day
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Justin T. Douglas
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Jon A. Tunge
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
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29
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Liang D, Wang M, Bekturhun B, Xiong B, Liu Q. One-Pot Synthesis of Polyfunctionalized 4H-Chromenes and Dihydrocoumarins Based on Copper(II) Bromide-Catalyzed CC Coupling of Benzylic Alcohols with Ketene Dithioacetals. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000062] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Lv H, You L, Ye S. Enantioselective Synthesis of DihydrocoumarinsviaN-Heterocyclic Carbene-Catalyzed Cycloaddition of Ketenes ando-Quinone Methides. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900544] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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