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Islam MS, Alammari AS, Barakat A, Alshahrani S, Haukka M, Al-Majid AM. Exploiting the Chiral Ligands of Bis(imidazolinyl)- and Bis(oxazolinyl)thiophenes-Synthesis and Application in Cu-Catalyzed Friedel-Crafts Asymmetric Alkylation. Molecules 2021; 26:molecules26237408. [PMID: 34885989 PMCID: PMC8658940 DOI: 10.3390/molecules26237408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/29/2021] [Accepted: 12/03/2021] [Indexed: 12/03/2022] Open
Abstract
Five new C2-symmetric chiral ligands of 2,5-bis(imidazolinyl)thiophene (L1–L3) and 2,5-bis(oxazolinyl)thiophene (L4 and L5) were synthesized from thiophene-2,5-dicarboxylic acid (1) with enantiopure amino alcohols (4a–c) in excellent optical purity and chemical yield. The utility of these new chiral ligands for Friedel–Crafts asymmetric alkylation was explored. Subsequently, the optimized tridentate ligand L5 and Cu(OTf)2 catalyst (15 mol%) in toluene for 48 h promoted Friedel–Crafts asymmetric alkylation in moderate to good yields (up to 76%) and with good enantioselectivity (up to 81% ee). The bis(oxazolinyl)thiophene ligands were more potent than bis(imidazolinyl)thiophene analogues for the asymmetric induction of the Friedel–Crafts asymmetric alkylation.
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Affiliation(s)
- Mohammad Shahidul Islam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia or (A.S.A.); (A.B.); or (S.A.)
- Correspondence: (M.S.I.); (A.M.A-M.)
| | - Abdullah Saleh Alammari
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia or (A.S.A.); (A.B.); or (S.A.)
| | - Assem Barakat
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia or (A.S.A.); (A.B.); or (S.A.)
| | - Saeed Alshahrani
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia or (A.S.A.); (A.B.); or (S.A.)
| | - Matti Haukka
- Department of Chemistry, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland; (M.H.)
| | - Abdullah Mohammed Al-Majid
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia or (A.S.A.); (A.B.); or (S.A.)
- Correspondence: (M.S.I.); (A.M.A-M.)
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2
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Dabiri M, Lehi NF, Mohammadian R. Catalytic stereoselective Mannich-type reactions for construction of fluorinated compounds. Mol Divers 2021; 26:1267-1310. [PMID: 34228344 DOI: 10.1007/s11030-021-10235-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 05/13/2021] [Indexed: 10/20/2022]
Abstract
For its unique role in developing and designing new bioactive materials and healthcare products, fluoro-organic compounds have attracted remarkable interest. Along with ever-increasing demand for a wider availability of fluorine-containing structural units, a large diversity of methods has been introduced to incorporate fluorine atoms specially in a stereoselective fashion. Among them, catalytic Mannich reaction can proceed with a broad variety of reactants and open clear paths for the synthesis of versatile amine synthons in the synthesis of natural product and pharmaceutical molecules. This review provides an overview of the employment of catalytic asymmetric Mannich reactions in the synthesis of fluorine-containing amine compounds and highlights the conceivable distinct mechanisms.
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Affiliation(s)
- Minoo Dabiri
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran.
| | - Noushin Farajinia Lehi
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran
| | - Reza Mohammadian
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran
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3
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Enantioselective Friedel-Crafts alkylation of indole with nitroalkenes in the presence of bifunctional squaramide organocatalysts. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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4
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Li J, Yu B, Lu Z. Chiral Imidazoline Ligands and Their Applications in
Metal‐Catalyzed
Asymmetric Synthesis
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000486] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiajing Li
- Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310058 China
| | - Bing Yu
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310058 China
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 China
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5
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Méndez I, Ferrer C, Rodríguez R, Lahoz FJ, García-Orduña P, Carmona D. Catalytic Enantioselective Alkylation of Indoles with trans-4-Methylthio-β-Nitrostyrene. ACS OMEGA 2020; 5:27978-27989. [PMID: 33163781 PMCID: PMC7643163 DOI: 10.1021/acsomega.0c03485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
The reaction of the rhodium aqua-complex (S Rh,R C)-[Cp*Rh{(R)-Prophos} (OH2)][SbF6]2 [Cp* = C5Me5, Prophos = propane-1,2-diyl-bis(diphenylphosphane)] (1) with trans-4-methylthio-β-nitrostyrene (MTNS) gives two linkage isomers (S Rh,R C)-[Cp*Rh{(R)-Prophos}(κ1 O-MTNS)]2+ (3-O) and (S Rh,R C)-[Cp*Rh{(R)-Prophos}(κ1 S-MTNS)]2+ (3-S) in which the nitrostyrene binds the metal through one of the oxygen atoms of the nitro group or through the sulfur atom, respectively. Both isomers are in equilibrium in dichloromethane solution, the equilibrium constant being affected by the temperature in such a way that when the temperature increases, the relative concentration of the oxygen-bonded isomer 3-O increases. The homologue aqua-complex of iridium, (S Ir,R C)-[Cp*Ir{(R)-Prophos}(OH2)][SbF6]2 (2), also reacts with MTNS; but only the sulfur-coordinated isomer (S Ir,R C)-[Cp*Ir{(R)-Prophos}(κ1 S-MTNS)]2+ (4-S) is detected in the solution by NMR spectroscopy. The crystal structures of 3-S and 4-S have been elucidated by X-ray diffractometric methods. Complexes 1 and 2 catalyze the Friedel-Crafts reaction of indole, N-methylindole, 2-methylindole, or N-methyl-2-methylindole with MTNS. Up to 93% ee has been achieved for N-methyl-2-methylindole. With this indole, the ee increases as conversion increases, ee at 263 K is lower than that obtained at 298 K, and the sign of the chirality of the major enantiomer changes at temperatures below 263 K. Detection and characterization of the catalytic intermediates metal-aci-nitro and the free aci-nitro compound as well as detection of the Friedel-Crafts (FC)-adduct complex involved in the catalysis allowed us to propose a plausible double cycle that accounts for the catalytic observations.
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6
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Yu ZY, Zhao JN, Yang F, Tang XF, Wu YF, Ma CF, Song B, Yun L, Meng QW. Rose bengal as photocatalyst: visible light-mediated Friedel–Crafts alkylation of indoles with nitroalkenes in water. RSC Adv 2020; 10:4825-4831. [PMID: 35495280 PMCID: PMC9049176 DOI: 10.1039/c9ra09227g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/21/2020] [Indexed: 11/21/2022] Open
Abstract
A novel and facile visible-light-mediated alkylation of indoles and nitroalkenes has been developed. In this protocol, rose bengal acts as a photosensitizer, and environmentally benign water was used as the green and efficient reaction medium. Indoles reacted smoothly with nitroalkenes under the irradiation of visible-light and generated corresponding 3-(2-nitroalkyl)indoles in moderate to good yields (up to 87%). A novel and facile visible-light-mediated alkylation of indoles and nitroalkenes has been developed.![]()
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Affiliation(s)
- Zong-Yi Yu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jing-Nan Zhao
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Fan Yang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Xiao-Fei Tang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yu-Feng Wu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Cun-Fei Ma
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Bo Song
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Lei Yun
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Qing-Wei Meng
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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7
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Venkatanna K, Yeswanth Kumar S, Karthick M, Padmanaban R, Ramaraj Ramanathan C. A chiral bicyclic skeleton-tethered bipyridine-Zn(OTf) 2 complex as a Lewis acid: enantioselective Friedel-Crafts alkylation of indoles with nitroalkenes. Org Biomol Chem 2019; 17:4077-4086. [PMID: 30957819 DOI: 10.1039/c9ob00545e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A conformationally rigid chiral bicyclic skeleton tethered bipyridine-Zn(OTf)2 complex facilitated the enantioselective Friedel-Crafts alkylation of indoles with trans-β-nitroarylalkenes in an enantioselective manner at elevated temperature. Indoles reacted smoothly with β-nitroarylalkenes to generate the corresponding 3-(2-nitroalkyl)indoles in good to excellent yields (up to 94%) with moderate to excellent enantioselectivities (up to 91%). The stereochemical outcome of the product from indole and trans-β-nitrostyrene in the presence of the CRCB tethered bipyridine-Zn(OTf)2 complex and the DFT calculation of the CRCB tethered bipyridine-Zn:trans-β-nitrostyrene complex support the si-face attack of indole on trans-β-nitrostyrene.
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Affiliation(s)
- Kesa Venkatanna
- Department of Chemistry, Pondicherry University, Puducherry, 605 014, India.
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8
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Heravi MM, Zadsirjan V, Masoumi B, Heydari M. Organometal-catalyzed asymmetric Friedel-Crafts reactions. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Barrios-Rivera J, Xu Y, Wills M. Applications of N′-monofunctionalised TsDPEN derivatives in asymmetric catalysis. Org Biomol Chem 2019; 17:1301-1321. [DOI: 10.1039/c8ob02889c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
N′-Monoalkylated or N′-mono(thio)acylated(N-sulfonyl)-1,2-diphenylethylene-1,2-diamine (TsDPEN) derivatives are have found extensive applications in asymmetric catalysis of a wide range of synthetic applications.
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Affiliation(s)
| | - Yingjian Xu
- GoldenKeys High-tech Materials Co. Ltd
- Building B
- Innovation & Entrepreneurship Park
- Guian New Area
- China
| | - Martin Wills
- Department of Chemistry
- Warwick University
- Coventry CV4 7AL
- UK
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10
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Min X, Liu J. An Approach to P=N Bond Formation: Straightforward Synthesis of Arylurea-Derived Phosphazenes via Condensation of Ph3
P=O with N
-Monosubstituted Arylureas. ChemistrySelect 2018. [DOI: 10.1002/slct.201801469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiangting Min
- School of Petroleum and Chemical Engineering; Dalian University of Technology, Panjin Campus; Panjin, Liaoning Province 124221 P. R. China
| | - Jianhui Liu
- School of Petroleum and Chemical Engineering; Dalian University of Technology, Panjin Campus; Panjin, Liaoning Province 124221 P. R. China
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian, Liaoning Province 116024 P. R. China
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11
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Aldoshin AS, Tabolin AA, Ioffe SL, Nenajdenko VG. Green, Catalyst-Free Reaction of Indoles with β-Fluoro-β-nitrostyrenes in Water. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800385] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Alexander S. Aldoshin
- Department of Chemistry; Lomonosov Moscow State University; 11999 Moscow Russian Federation
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
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12
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Zhao MX, Dong ZW, Zhu GY, Zhao XL, Shi M. Diastereo- and enantioselective Mannich/cyclization cascade reaction of isocyanoacetates with cyclic sulfamide ketimines by cinchona alkaloid squaramide/AgOAc cooperative catalysis. Org Biomol Chem 2018; 16:4641-4649. [DOI: 10.1039/c8ob01090k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This reaction provides facile access to a variety of optically active imidazoline-fused sulfahydantoin derivatives in excellent yields and good to excellent stereoselectivities.
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Affiliation(s)
- Mei-Xin Zhao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhi-Wen Dong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Guang-Yu Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiao-Li Zhao
- Department of Chemistry
- East China Normal University
- Shanghai
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
- State Key Laboratory of Organometallic Chemistry
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13
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Javorskis T, Orentas E. Chemoselective Deprotection of Sulfonamides Under Acidic Conditions: Scope, Sulfonyl Group Migration, and Synthetic Applications. J Org Chem 2017; 82:13423-13439. [DOI: 10.1021/acs.joc.7b02507] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomas Javorskis
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Edvinas Orentas
- Department of Organic Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
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14
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Liu XL, Zhang XL, Guo YJ, Meng CH, Xia AB, Xu DQ. Asymmetric Synthesis of Functionalized Nitrophenols via a Copper(II)-Mediated Bromination/Debromination Aromatization Sequence. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xue-Li Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 P. R. China
| | - Xiao-Long Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 P. R. China
| | - Yan-Jun Guo
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 P. R. China
| | - Chen-Hong Meng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 P. R. China
| | - Ai-Bao Xia
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 P. R. China
| | - Dan-Qian Xu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology; Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province; Zhejiang University of Technology; Hangzhou 310014 P. R. China
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15
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Iron-catalyzed cross etherification of alcohols to form unsymmetrical benzyl ethers. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2016.12.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Arai T, Tsuchida A, Miyazaki T, Awata A. Catalytic Asymmetric Synthesis of Chiral 2-Vinylindole Scaffolds by Friedel-Crafts Reaction. Org Lett 2017; 19:758-761. [PMID: 28134526 DOI: 10.1021/acs.orglett.6b03584] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A chiral bis(imidazolidine)pyridine (PyBidine)-Ni(OTf)2 complex smoothly catalyzed an asymmetric Friedel-Crafts reaction of 2-vinylindoles with nitroalkenes to give chiral indoles in a highly enantioselective manner while maintaining the 2-vinyl functionality. The chiral 2-vinylindoles offer unique chiral scaffolds for diverse transformations.
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Affiliation(s)
- Takayoshi Arai
- Molecular Chirality Research Center, and Department of Chemistry, Graduate School of Science, Chiba University , 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Akiko Tsuchida
- Molecular Chirality Research Center, and Department of Chemistry, Graduate School of Science, Chiba University , 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Tomoya Miyazaki
- Molecular Chirality Research Center, and Department of Chemistry, Graduate School of Science, Chiba University , 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Atsuko Awata
- Molecular Chirality Research Center, and Department of Chemistry, Graduate School of Science, Chiba University , 1-33 Yayoi, Inage, Chiba 263-8522, Japan
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17
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Le Phuong HA, Cseri L, Whitehead GFS, Garforth A, Budd P, Szekely G. Environmentally benign and diastereoselective synthesis of 2,4,5-trisubstituted-2-imidazolines. RSC Adv 2017. [DOI: 10.1039/c7ra11827a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A one-pot, membrane-assisted synthesis of 2,4,5-trisubstituted-2-imidazolines was developed, and substituent effects, reaction kinetics and mechanism by DFT were studied.
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Affiliation(s)
- Hai Anh Le Phuong
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
| | - Levente Cseri
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
| | | | - Arthur Garforth
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
| | - Peter Budd
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | - Gyorgy Szekely
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
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18
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Chen JB, Jia YX. Recent progress in transition-metal-catalyzed enantioselective indole functionalizations. Org Biomol Chem 2017; 15:3550-3567. [DOI: 10.1039/c7ob00413c] [Citation(s) in RCA: 189] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recent progress on the transition-metal-catalyzed enantioselective functionalization reaction of indoles is reviewed, which is mainly focused on asymmetric indole alkylations, arylations, cycloaddition reactions, and other reactions.
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Affiliation(s)
- Jing-Biao Chen
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Yi-Xia Jia
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
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19
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Ellsworth AA, Magyar CL, Hubbell GE, Theisen CC, Holmes D, Mosey RA. One-pot triflic anhydride-mediated synthesis of 1,2-disubstituted 2-imidazolines from N-(2-haloethyl)amides and amines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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20
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Li NK, Kong LP, Qi ZH, Yin SJ, Zhang JQ, Wu B, Wang XW. Friedel-Crafts Reaction of Indoles with Isatin-Derived β,γ-Unsaturated α-Keto Esters Using a BINOL-Derived Bisoxazoline (BOX)/Copper(II) Complex as Catalyst. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600272] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Nai-Kai Li
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Ling-Pei Kong
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Zheng-Hang Qi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Shao-Jie Yin
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Jun-Qi Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Bing Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
| | - Xing-Wang Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou 215123 People's Republic of China
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21
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Highly Efficient Tetranuclear ZnII2LnIII2 Catalysts for the Friedel–Crafts Alkylation of Indoles and Nitrostyrenes. Catalysts 2016. [DOI: 10.3390/catal6090140] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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22
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Méndez I, Rodríguez R, Polo V, Passarelli V, Lahoz FJ, García-Orduña P, Carmona D. Temperature Dual Enantioselective Control in a Rhodium-Catalyzed Michael-Type Friedel-Crafts Reaction: A Mechanistic Explanation. Chemistry 2016; 22:11064-83. [DOI: 10.1002/chem.201601301] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Isabel Méndez
- Departamento de Catálisis y Procesos Catalíticos; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC -; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Ricardo Rodríguez
- Departamento de Catálisis y Procesos Catalíticos; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC -; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Víctor Polo
- Departamento de Química Física; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Vincenzo Passarelli
- Departamento de Catálisis y Procesos Catalíticos; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC -; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
- Centro Universitario de la Defensa; Ctra. Huesca s/n 50090 Zaragoza Spain
| | - Fernando J. Lahoz
- Departamento de Catálisis y Procesos Catalíticos; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC -; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Pilar García-Orduña
- Departamento de Catálisis y Procesos Catalíticos; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC -; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Daniel Carmona
- Departamento de Catálisis y Procesos Catalíticos; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC -; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
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23
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Bauer JM, Frey W, Peters R. Dual Palladium(II)/Tertiary Amine Catalysis for Asymmetric Regioselective Rearrangements of Allylic Carbamates. Chemistry 2016; 22:5767-77. [PMID: 26990446 DOI: 10.1002/chem.201600138] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Indexed: 11/10/2022]
Abstract
The streamlined catalytic access to enantiopure allylic amines as valuable precursors towards chiral β- and γ-aminoalcohols as well as α- and β-aminoacids is desirable for industrial purposes. In this article an enantioselective method is described that transforms achiral allylic alcohols and N-tosylisocyanate in a single step into highly enantioenriched N-tosyl protected allylic amines via an allylic carbamate intermediate. The latter is likely to undergo a cyclisation-induced [3,3]-rearrangement catalysed by a planar chiral pentaphenylferrocene palladacycle in cooperation with a tertiary amine base. The otherwise often indispensable activation of palladacycle catalysts by a silver salt is not required in the present case and there is also no need for an inert gas atmosphere. To further improve the synthetic value, the rearrangement was used to form dimethylaminosulfonyl-protected allylic amines, which can be deprotected under non-reductive conditions.
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Affiliation(s)
- Johannes Moritz Bauer
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
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24
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Ma HL, Xie L, Zhang Z, Li JQ, Qin ZH, Fu B. Enantioselective Copper(II)-Catalyzed Conjugate Addition of Indoles to β-Substituted Unsaturated Acyl Phosphonates. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500923] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Weiss M, Holz J, Peters R. Regioselective Asymmetric Allylic Alkylation Reaction ofα-Cyanoacetates Catalyzed by a Heterobimetallic Platina-/Palladacycle. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501290] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Functionalized S-perfluorinated sulfoximines: Preparation and evaluation in catalytic processes. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.06.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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27
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Peng J, Zhao BL, Du DM. A Combination of Metal and Organic Catalysis: Highly Diastereo- and Enantioselective Construction of Fluorinated 2-Aminocyclopenta[b]pyran Derivatives. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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28
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Tydlitát J, Bureš F, Růžičková Z. Phenylalanine-Derived Imidazolines Bearing Heteroaromatic Pendants: Synthesis, Characterization, and Application in the AsymmetricHenryReaction. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201500128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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29
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Schrapel C, Peters R. Palladacyclus-katalysierte, hoch enantioselektive Arylierung von Iminen mit Arylboroxinen ohne Verwendung einer exogenen Base. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501846] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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30
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Schrapel C, Peters R. Exogenous-Base-Free Palladacycle-Catalyzed Highly Enantioselective Arylation of Imines with Arylboroxines. Angew Chem Int Ed Engl 2015; 54:10289-93. [DOI: 10.1002/anie.201501846] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/30/2015] [Indexed: 12/18/2022]
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31
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Chen S, Lou Q, Ding Y, Zhang S, Hu W, Zhao J. Organocatalytic Enantioselective Michael Reaction of Malononitrile with β,β-Disubstituted Nitroalkenes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500079] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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32
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Butani HH, Vachhani DD, Bhoya UC, Shah AK, Van der Eycken EV. Remote Amide-Controlled Gold-Catalyzed Stereoselective Hydro-heteroarylation of Acrylamides: Access to Pyrido[3,4-b]indoles. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403682] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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33
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The Future of Catalysis by Chiral Lewis Acids. TOP ORGANOMETAL CHEM 2015. [DOI: 10.1007/3418_2015_141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Nakamura S. Enantioselective Reaction Using Palladium Pincer Complexes with C2-Symmetric Chiral Bis(imidazoline)s. J SYN ORG CHEM JPN 2015. [DOI: 10.5059/yukigoseikyokaishi.73.1062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shuichi Nakamura
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology
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35
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Moritz Bauer J, Peters R. Catalytic asymmetric [3,3]-rearrangements of allylic acetimidates. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01749h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rearrangement of non-halogenated acetimidates in combination with an enzymatic amide hydrolysis is attractive to get almost enantiopure allylic amines.
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Affiliation(s)
- J. Moritz Bauer
- Institut für Organische Chemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
| | - René Peters
- Institut für Organische Chemie
- Universität Stuttgart
- D-70569 Stuttgart
- Germany
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36
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More GV, Bhanage BM. Synthesis of a chiral fluorescence active probe and its application as an efficient catalyst in the asymmetric Friedel–Crafts alkylation of indole derivatives with nitroalkenes. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01456a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A green protocol for the asymmetric Friedel–Crafts alkylation of indole derivatives with nitrostyrene using chiral Zn(ii) catalyst has been developed.
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Affiliation(s)
- Ganesh Vasant More
- Institute of Chemical Technology
- Department of Chemistry
- Mumbai-400019
- India
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37
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Dalpozzo R. Strategies for the asymmetric functionalization of indoles: an update. Chem Soc Rev 2015; 44:742-78. [DOI: 10.1039/c4cs00209a] [Citation(s) in RCA: 290] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
During the past four years, the research of new synthetic methodologies for the rapid construction of enantiomerically pure substituted indole has had a fruitful and important growth.
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Affiliation(s)
- Renato Dalpozzo
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- Cubo 12/C I-87036 Arcavacata di Rende (Cs)
- Italy
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38
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Hellmuth T, Frey W, Peters R. Regioselective Catalytic Asymmetric C-Alkylation of Isoxazolinones by a Base-Free Palladacycle-Catalyzed Direct 1,4-Addition. Angew Chem Int Ed Engl 2014; 54:2788-91. [DOI: 10.1002/anie.201410933] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Indexed: 12/16/2022]
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39
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Hellmuth T, Frey W, Peters R. Regioselektive katalytische asymmetrische C-Alkylierung von Isoxazolinonen durch basenfreie Palladacyclus-katalysierte direkte 1,4-Addition. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410933] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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40
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Weiss M, Peters R. Catalytic Direct Dehydrogenative Cross-Couplings of C–H (Pro)Nucleophiles and Allylic Alcohols without an Additional Oxidant. ACS Catal 2014. [DOI: 10.1021/cs501495g] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Marcel Weiss
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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41
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Sudheendran M, Eitel SH, Naumann S, Buchmeiser MR, Peters R. Heterogenization of ferrocene palladacycle catalysts on ROMP-derived monolithic supports and application to a Michael addition. NEW J CHEM 2014. [DOI: 10.1039/c4nj01253d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Zhao MX, Bi HL, Jiang RH, Xu XW, Shi M. Cinchona Alkaloid Squaramide/AgOAc Cooperatively Catalyzed Diastereo- and Enantioselective Mannich/Cyclization Cascade Reaction of Isocyanoacetates and Cyclic Trifluoromethyl Ketimines. Org Lett 2014; 16:4566-9. [DOI: 10.1021/ol502123z] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mei-Xin Zhao
- Key
Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P.R. China
- CAS
Key Laboratory of Molecular Recognition and Function, Institute of
Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Hong-Lei Bi
- Key
Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Rong-Hui Jiang
- Key
Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Xu-Wei Xu
- Key
Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Min Shi
- Key
Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P.R. China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of
Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China
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43
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Arenes and Hetarenes in Reactions with unsaturated Nitro Compounds (Review). Chem Heterocycl Compd (N Y) 2014. [DOI: 10.1007/s10593-014-1514-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Li WJ. Synthesis of chiral benzene-based tetraoxazolines and their application in asymmetric Friedel–Crafts alkylation of indole derivatives with nitroalkenes. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.04.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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45
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Jia SJ, Du DM. Enantioselective Friedel–Crafts alkylation of indoles with β,γ-unsaturated α-ketoesters catalyzed by new squaramide-linked bisoxazoline–Zn(OTf)2 complexes. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.05.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Direct Enantioselective Three-Component Synthesis of Optically Active Propargylamines in Water. Chemistry 2014; 20:8848-51. [DOI: 10.1002/chem.201402384] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Indexed: 11/07/2022]
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47
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Lancianesi S, Palmieri A, Petrini M. Synthetic Approaches to 3-(2-Nitroalkyl) Indoles and Their Use to Access Tryptamines and Related Bioactive Compounds. Chem Rev 2014; 114:7108-49. [DOI: 10.1021/cr400676v] [Citation(s) in RCA: 238] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Stefano Lancianesi
- School
of Science and Technology,
Chemistry Division, Università di Camerino, via S. Agostino,
1, I-62032 Camerino, Italy
| | - Alessandro Palmieri
- School
of Science and Technology,
Chemistry Division, Università di Camerino, via S. Agostino,
1, I-62032 Camerino, Italy
| | - Marino Petrini
- School
of Science and Technology,
Chemistry Division, Università di Camerino, via S. Agostino,
1, I-62032 Camerino, Italy
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48
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Hellmuth T, Rieckhoff S, Weiss M, Dorst K, Frey W, Peters R. Cooperative Bimetallic Asymmetric Catalysis: Comparison of a Planar Chiral Ruthenocene Bis-Palladacycle to the Corresponding Ferrocene. ACS Catal 2014. [DOI: 10.1021/cs500393x] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Tina Hellmuth
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Stefan Rieckhoff
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Marcel Weiss
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Konstantin Dorst
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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49
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Chiral Bis(Oxazolinyl)thiophenes for Enantioselective Cu(II)-Catalyzed Friedel–Crafts Alkylation of Indole Derivatives with Nitroalkenes. Catal Letters 2014. [DOI: 10.1007/s10562-014-1228-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Ortín I, Dixon DJ. Direct Catalytic Enantio- and Diastereoselective Mannich Reaction of Isocyanoacetates and Ketimines. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201309719] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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