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Zhang Y, Wu XY, Han J. Chiral iminophosphorane catalyzed asymmetric Henry reaction of α,β-alkynyl ketoesters. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.04.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Cao W, Feng X, Liu X. Reversal of enantioselectivity in chiral metal complex-catalyzed asymmetric reactions. Org Biomol Chem 2019; 17:6538-6550. [PMID: 31219126 DOI: 10.1039/c9ob01027k] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Asymmetric catalysis represents an efficient approach to prepare optically active compounds. Commonly, both enantiomers of a chiral catalyst are used to synthesize two enantiomers of a chiral compound, however, it is quite difficult to obtain the catalysts with opposite configurations in most cases. Thus, chemists pay much attention to look for new strategies. Enantiodivergent synthesis demonstrates cost effectiveness and practicability to solve this issue by tuning the reaction parameters with the use of ligands derived from a single chiral source. In 2003 and 2008, two reviews have commendably summarized the enantiodivergent reactions, and some representative examples were illustrated. In this review, reversal of enantioselectivity in metal complex-mediated asymmetric catalysis from 2008 to present was updated. Several factors of delivering enantiodivergence are introduced, including metal salts, ligands, additives, solvents, temperature and so on.
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Affiliation(s)
- Weidi Cao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
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Zhou Y, Cao Y, Gong G, Zhang Y, Zhao H, Gao X, Zhao G. A simple but effective ferrocene derivative as a redox, and fluorescent receptor for highly selective recognition of Al3+ ions. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.08.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Dixit A, Kumar P, Singh S. Synthesis of chiral salalen ligands and their in-situ generated Cu-complexes for asymmetric Henry reaction. Chirality 2018; 30:1257-1268. [PMID: 30238505 DOI: 10.1002/chir.23019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 11/11/2022]
Abstract
Chiral salalen ligands derived from (S)-proline and derivatives of salicyaldehydes were synthesized, and their in-situ generated Cu (II) complexes were evaluated in the asymmetric Henry reaction. Salalen ligand of different substituents on the phenyl moiety showed remarkable effect on the enantioselectivity of nitro-aldol product of 4-nitrobenzaldehyde and nitromethane. Cu (II) complex generated in situ with (S)-2-(tert-butyl)-6-((2-(((2-hydroxy-3-methylbenzylidene)amino)methyl)pyrrolidin-1-yl)methyl) phenol (10 mol%) and Cu (OAc)2 .H2 O (10 mol%), found to be better catalyst for nitro-aldol reaction between 4-nitrobenzaldehyde and nitromethane, gave corresponding product in 85% yield and 88% enantiomeric excess (ee) in isopropanol at 35°C after 40 hours. The catalyst also used for the Henry reaction with different substituted benzaldehydes and corresponding products were obtained in 22% to 99% yields with 66% to 92% ee. Henry reaction of 4-nitrobenzaldehyde and prochiral nitroethane gave anti-selective product (dr = 79/21; anti/syn) in a 91% yield with 80% ee.
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Affiliation(s)
- Ashish Dixit
- Department of Chemistry, University of Delhi, North Campus, Delhi, India
| | - Pramod Kumar
- Department of Chemistry, University of Delhi, North Campus, Delhi, India
| | - Surendra Singh
- Department of Chemistry, University of Delhi, North Campus, Delhi, India
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5
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Asymmetric Henry reaction catalyzed by chiral Cu(II) salalen and salan complexes derived from ( S )-proline. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.04.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
This review covers diastereo- and enantiodivergent catalyzed reactions in acyclic and cyclic systems using metal complexes or organocatalysts. Among them, nucleophilic addition to carbon-carbon and carbon-nitrogen double bonds, α-functionalization of carbonyl compounds, allylic substitutions, and ring opening of oxiranes and aziridines are considered. The diastereodivergent synthesis of alkenes from alkynes is also included. Finally, stereodivergent intramolecular and intermolecular cycloadditions and other cyclizations are also reported.
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Affiliation(s)
- Irina P Beletskaya
- Chemistry Department , M. V. Lomonosov Moscow State University , Leninskie Gory 1 , 119992 Moscow , Russia
| | - Carmen Nájera
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Alicante , Apdo. 99 , E-03080 Alicante , Spain
| | - Miguel Yus
- Departamento de Química Orgánica and Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Alicante , Apdo. 99 , E-03080 Alicante , Spain
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Li ZM, Li YW, Cao XP, Chow HF, Kuck D. Biconcave and Convex-Concave Tribenzotriquinacene Dimers. J Org Chem 2018; 83:3433-3440. [PMID: 29554430 DOI: 10.1021/acs.joc.8b00375] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new chiral tribenzotriquinacene bearing an ortho-bromoaniline nucleus was synthesized and optically resolved. The individual enantiomers, the absolute configuration of which was confirmed by single-crystal X-ray structure analysis, were stereoselectively converted into the same pyrazine-fused syn-bis-TBTQ derivative by chirality-assisted Buchwald-Hartwig amination. The corresponding diastereomeric anti-dimer was obtained alongside the syn-dimer from the racemic sample under similar reaction conditions. X-ray structure analysis of the dimers confirmed the mutual biconcave and convex-concave configuration of their TBTQ moieties and the preservation of the orthogonal orientation of the indane wings within each of them.
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Affiliation(s)
- Zhi-Min Li
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , P.R. China
| | - Ya-Wei Li
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , P.R. China
| | - Xiao-Ping Cao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , P.R. China
| | - Hak-Fun Chow
- Department of Chemistry and Center of Novel Functional Molecules , The Chinese University of Hong Kong , Shatin , Hong Kong SAR
| | - Dietmar Kuck
- Department of Chemistry and Center for Molecular Materials (CM2) , Bielefeld University , 33615 Bielefeld , Germany
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9
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10
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Adate PA, Matsunaga T, Shin H, Harada T. Chiral Aluminum Catalyst System for the Enantioselective Addition of Vinylaluminum Reagents to Aldehydes: Metal Controlled Reversal of Enantioselectivity. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Priyanka A. Adate
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan, Fax: (+81)-75-724-7580
| | - Takuya Matsunaga
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan, Fax: (+81)-75-724-7580
| | - Hirata Shin
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan, Fax: (+81)-75-724-7580
| | - Toshiro Harada
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan, Fax: (+81)-75-724-7580
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Boobalan R, Chang YM, Chen C, Lee GH. Copper Complex of Pinene based Schiff base [CuSBADBH]2: Synthesis and its Application in Catalytic Asymmetric Nitroaldol (Henry) Reaction. ChemistrySelect 2016. [DOI: 10.1002/slct.201600359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ramalingam Boobalan
- Department of Chemistry; National Dong Hwa University; Soufeng Hualien 974 Taiwan
| | - You-Ming Chang
- Department of Chemistry; National Dong Hwa University; Soufeng Hualien 974 Taiwan
| | - Chinpiao Chen
- Department of Chemistry; National Dong Hwa University; Soufeng Hualien 974 Taiwan
- Department of Nursing; Tzu Chi University of Science and Technology; Hualien 970 Taiwan
| | - Gene-Hsian Lee
- Instrumentation Center; College of Science; National Taiwan University; Taipei 106 Taiwan
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Kaldun J, Prause F, Scharnagel D, Freitag F, Breuning M. Evaluation of 5-cis-Substituted Prolinamines as Ligands in Enantioselective, Copper-Catalyzed Henry Reactions. ChemCatChem 2016. [DOI: 10.1002/cctc.201600240] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Johannes Kaldun
- Organic Chemistry Laboratory; University of Bayreuth; Universitätsstraße 30 95447 Bayreuth Germany
| | - Felix Prause
- Organic Chemistry Laboratory; University of Bayreuth; Universitätsstraße 30 95447 Bayreuth Germany
| | - Dagmar Scharnagel
- Organic Chemistry Laboratory; University of Bayreuth; Universitätsstraße 30 95447 Bayreuth Germany
| | - Frederik Freitag
- Organic Chemistry Laboratory; University of Bayreuth; Universitätsstraße 30 95447 Bayreuth Germany
| | - Matthias Breuning
- Organic Chemistry Laboratory; University of Bayreuth; Universitätsstraße 30 95447 Bayreuth Germany
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Jiao T, Tu J, Li G, Xu F. Cu-catalyzed asymmetric Henry reaction promoted by chiral camphor Schiff bases. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.02.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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A simple complex: ‘on–off–on’ colorimetric and ratiometric fluorescence response towards fluoride ions and its solid state optical properties. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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15
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Qian X, Han J, Wang L. Copper-catalyzed selective ortho-arylations of 2-naphthol and phenol derivatives with diaryliodonium salts. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.100] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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