1
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Zhu YF, Wei BL, Wang WQ, Xuan LJ. A facile and efficient method for synthesis of β-iodocarboxylates from terminal epoxides. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.151353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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2
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Alfonzo E, Mendoza JWL, Beeler AB. One-pot synthesis of epoxides from benzyl alcohols and aldehydes. Beilstein J Org Chem 2018; 14:2308-2312. [PMID: 30254694 PMCID: PMC6142752 DOI: 10.3762/bjoc.14.205] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 08/21/2018] [Indexed: 11/23/2022] Open
Abstract
A one-pot synthesis of epoxides from commercially available benzyl alcohols and aldehydes is described. The reaction proceeds through in situ generation of sulfonium salts from benzyl alcohols and their subsequent deprotonation for use in Corey–Chaykovsky epoxidation of aldehydes. The generality of the method is exemplified by the synthesis of 34 epoxides that were made from an array of electronically and sterically varied alcohols and aldehydes.
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Affiliation(s)
- Edwin Alfonzo
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Jesse W L Mendoza
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Aaron B Beeler
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
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3
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Yao L, Zhu Q, Wei L, Wang ZF, Wang CJ. Dysprosium(III)-Catalyzed Ring-Opening ofmeso-Epoxides: Desymmetrization by Remote Stereocontrol in a Thiolysis/Elimination Sequence. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lu Yao
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Qiao Zhu
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Liang Wei
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Zuo-Fei Wang
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
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4
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Yao L, Zhu Q, Wei L, Wang ZF, Wang CJ. Dysprosium(III)-Catalyzed Ring-Opening ofmeso-Epoxides: Desymmetrization by Remote Stereocontrol in a Thiolysis/Elimination Sequence. Angew Chem Int Ed Engl 2016; 55:5829-33. [DOI: 10.1002/anie.201601083] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Lu Yao
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Qiao Zhu
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Liang Wei
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Zuo-Fei Wang
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 China
- State Key Laboratory of Elemento-organic Chemistry; Nankai University; Tianjin 300071 China
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5
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Ma LF, Shi ZZ, Li FF, Zhang J, Wang LY. Coordination polymers with free Brønsted acid sites for selective catalysis. NEW J CHEM 2015. [DOI: 10.1039/c4nj01898b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cu(ii) coordination polymers with free –COOH groups as Brønsted acid sites show high activity and regioselectivity in catalyzing epoxide ring-opening reactions.
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Affiliation(s)
- Lu-Fang Ma
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- the Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Zhen-Zhen Shi
- Department of Physics and Chemistry
- Henan Polytechnic University
- Jiaozuo, 454000
- P. R. China
| | - Fei-Fei Li
- Department of Physics and Chemistry
- Henan Polytechnic University
- Jiaozuo, 454000
- P. R. China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- the Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Li-Ya Wang
- College of Chemistry and Chemical Engineering
- Luoyang Normal University
- Luoyang 471022
- P. R. China
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6
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Lin T, Ma S, Lu Y, Guo B. New design of shape memory polymers based on natural rubber crosslinked via oxa-Michael reaction. ACS APPLIED MATERIALS & INTERFACES 2014; 6:5695-703. [PMID: 24673791 DOI: 10.1021/am500236w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Shape memory polymers (SMPs) based on natural rubber were fabricated by crosslinking epoxidized natural rubber with zinc diacrylate (ZDA) using the oxa-Michael reaction. These SMPs possessed excellent shape fixity and recovery. The glass transition largely accounted for the fixing of the SMPs temporary shape. Increasing the ZDA content allowed the trigger temperature (20-46 °C) and recovery time (14-33 s) of the SMPs to be continuously tuned. Nanosized silica (nanosilica) was incorporated into the neat polymers to further increase the flexibility and tune the recovery stress. The nanosilica-SMPs exhibited exceptionally high strength in a rubbery state (>20 MPa). The nanosilica-SMPs exhibited high transparency, making them suitable in visible heat-shrinkable tubes.
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Affiliation(s)
- Tengfei Lin
- Department of Polymer Materials and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
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7
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Lin T, Guo B. Curing of Rubber via Oxa-Michael Reaction toward Significantly Increased Aging Resistance. Ind Eng Chem Res 2013. [DOI: 10.1021/ie403485e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tengfei Lin
- Department of Polymer Materials
and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Baochun Guo
- Department of Polymer Materials
and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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8
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Plancq B, Lafantaisie M, Companys S, Maroun C, Ollevier T. Highly enantioselective iron(ii)-catalyzed opening reaction of aromatic meso-epoxides with indoles. Org Biomol Chem 2013; 11:7463-6. [DOI: 10.1039/c3ob41782d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Ahn BJK, Kraft S, Sun XS. Solvent-free acid-catalyzed ring-opening of epoxidized oleochemicals using stearates/stearic acid, and its applications. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:2179-2189. [PMID: 22304525 DOI: 10.1021/jf204275q] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Toxic solvent and strong acid catalysts causing environmental issues have been mainly used for ring-opening of epoxidized oleochemicals. Here, we demonstrated that magnesium stearate (Mg-stearate) was a high efficient catalyst for solvent-free ring-opening of epoxidized methyl oleate, a model compound of midchain epoxide. Mg-stearate resulted in the highest yield (95%) and conversion rate (99%) toward midchain alkoxyesters under the same conditions (160 °C, 12 h) superior to other fatty acid derivatives such as a Lewis acid (lithium and sodium stearate) and Brønsted acid (stearic acid). Based on this chemical study, we synthesized biogrease and thermoplastic using epoxidized soybean oil (ESO) and Mg-stearate via one-pot, solvent-free, and purification-free process. Mg-stearate played a significant role as a reactant for epoxide ring-opening and as a thickener when excess loading rate was used; viscosity increased from 1800 to 4500 Pa·s at 25 °C when ESO:Mg-stearate increased from 1:1 equiv to 1:2, then behaved like thermoplastics (T(g) = -27 °C, T(m) = 90 °C) with 1:4.
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Affiliation(s)
- Byung-Jun Kollbe Ahn
- Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas 66506, United States
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10
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Plancq B, Ollevier T. Iron(II)-catalyzed enantioselective meso-epoxide-opening with anilines. Chem Commun (Camb) 2012; 48:3806-8. [DOI: 10.1039/c2cc18032d] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Khalig NG. Investigation of the catalytic activity of poly(4-vinylpyridine) supported iodine as a new, efficient and recoverable catalyst for regioselective ring opening of epoxides. RSC Adv 2012. [DOI: 10.1039/c2ra20080e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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12
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Investigation of the catalytic activity of an electron-deficient vanadium(IV) tetraphenylporphyrin: A new, highly efficient and reusable catalyst for ring-opening of epoxides. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.06.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Tanabe KK, Cohen SM. Modular, Active, and Robust Lewis Acid Catalysts Supported on a Metal−Organic Framework. Inorg Chem 2010; 49:6766-74. [DOI: 10.1021/ic101125m] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kristine K. Tanabe
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358
| | - Seth M. Cohen
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358
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14
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Gansäuer A, Shi L, Keller F, Karbaum P, Fan CA. Regiodivergent epoxide opening (REO) via electron transfer: control elements. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.03.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Sun K, Li WX, Feng Z, Li C. Cooperative activation in ring-opening hydrolysis of epoxides by Co-salen complexes: A first principle study. Chem Phys Lett 2009. [DOI: 10.1016/j.cplett.2009.01.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Gansäuer A, Fan CA, Keller F, Karbaum P. Regiodivergent epoxide opening: a concept in stereoselective catalysis beyond classical kinetic resolutions and desymmetrizations. Chemistry 2007; 13:8084-90. [PMID: 17763493 DOI: 10.1002/chem.200701021] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
An approach to highly regiodivergent epoxide openings (REOs) is presented. The very popular kinetic resolutions of epoxides and openings of meso-epoxides constitute subclasses of such REOs. REOs are attractive for parallel resolutions, double asymmetric reactions of enantiomerically enriched epoxides, and for semisynthetic applications in the functionalization of natural products. They have been notoriously difficult to realize by means of SN2 mechanisms. Our titanocene-catalyzed radical REO addresses this issue by decoupling epoxide opening and radical trapping and is firmly based on a mechanistic study of the reductive epoxide opening.
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Affiliation(s)
- Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie Universität Bonn, Gerhard Domagk Str. 1, 53127 Bonn, Germany.
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17
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Chen YJ, Chen C. Enantioselective ring-opening reaction of meso-epoxides with ArSH catalyzed by a C2-symmetric chiral bipyridyldiol-titanium complex. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.04.030] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Zheng X, Jones CW, Weck M. Ring-Expanding Olefin Metathesis: A Route to Highly Active Unsymmetrical Macrocyclic Oligomeric Co-Salen Catalysts for the Hydrolytic Kinetic Resolution of Epoxides. J Am Chem Soc 2007; 129:1105-12. [PMID: 17263391 DOI: 10.1021/ja0641406] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the presence of the third generation Grubbs catalyst, the ring-expanding olefin metathesis of a monocyclooct-4-en-1-yl functionalized salen ligand and the corresponding Co(II)(salen) complex at low monomer concentrations results in the exclusive formation of macrocyclic oligomeric structures with the salen moieties being attached in an unsymmetrical, flexible, pendent manner. The TOF-MALDI mass spectrometry reveals that the resulting macrocyclic oligomers consist predominantly of dimeric to tetrameric species, with detectable traces of higher homologues up to a decamer. Upon activation under aerobic and acidic conditions, these Co(salen) macrocycles exhibit extremely high reactivities and selectivities in the hydrolytic kinetic resolution (HKR) of a variety of racemic terminal epoxides under neat conditions with very low catalyst loadings. The excellent catalytic properties can be explained in terms of the new catalyst's appealing structural features, namely, the flexible oligomer backbone, the unsymmetrical pendent immobilization motif of the catalytic sites, and the high local concentration of Co(salen) species resulting from the macrocyclic framework. This ring-expanding olefin metathesis is suggested to be a simple way to prepare tethered metal complexes that are endowed with key features--(i) a high local concentration of metal complexes and (ii) a flexible, single point of attachment to the support--that facilitate rapid and efficient catalysis when a bimetallic transition state is required.
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Affiliation(s)
- Xiaolai Zheng
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
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19
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Asymmetric oxidation of enol phosphates to α-hydroxy ketones by (salen)manganese(III) complex. Effects of the substitution pattern of enol phosphates on the stereochemistry of oxygen transfer. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.09.100] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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20
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(Salen)Ti(IV) complex catalyzed asymmetric ring-opening of epoxides using dithiophosphorus acid as the nucleophile. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.09.049] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Rapid and efficient ring opening of epoxides catalyzed by a new electron deficient tin(IV) porphyrin. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.05.069] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Fox DL, Robinson AA, Frank JB, Salvatore RN. CsOH-promoted epoxide ring-opening with phosphines: mild and efficient synthesis of monohydroxyphosphines. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.08.068] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Lo CY, Pal S, Odedra A, Liu RS. A new and efficient catalytic isomerization of cis - and trans -epoxides. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00465-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Li Z, Zhou Z, Li K, Wang L, Zhou Q, Tang C. Regio- and stereoselective ring-opening of epoxides using organic dithiophosphorus acids as nucleophiles. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01715-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Adam W, Schambony SB. Diastereoselective epoxidation of oxazolidine-substituted alkenes by dimethyldioxirane and m-chloroperbenzoic acid: pi-facial control through hydrogen bonding by the urea functionality. Org Lett 2001; 3:79-82. [PMID: 11429877 DOI: 10.1021/ol006800w] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
[figure: see text] A high diastereoselectivity (up to > 98:2) is found for the DMD and m-CPBA epoxidations of chiral oxazolidine-substituted olefins with a urea group. The selectivity is explained in terms of hydrogen bonding between the remote NH group of the urea functionality and the epoxidizing reagent. Methylation of the NH group prohibits hydrogen bonding, and a reversed selectivity is observed due to steric repulsion between the reagent and the urea functionality.
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Affiliation(s)
- W Adam
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
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26
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Abstract
The reaction of oxirane with amines in the presence of some bidentate and monodentate Bronsted acids has been studied theoretically by taking some simplified reaction models. Acids have been shown to serve as temporary reservoirs of electronic charge during the reaction to strengthen the nucleophilicity of the substrate. The shift of electronic charges and enhancement of the nucleophilicity of oxirane have been represented by means of paired interaction orbitals and projected reactive orbitals. The reason the transition state appears at an earlier stage in the reaction catalyzed by 1,8-biphenylenediol relative to the reactions catalyzed by monodentate phenols and alcohols has been clarified.
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27
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Badalassi F, Crotti P, Macchia F, Pineschi M, Arnold A, Feringa BL. Catalytic enantioselective carboncarbon bond formation by addition of dialkylzinc reagents to cyclic 1,3-diene monoepoxides. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)01704-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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28
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McCleland BW, Nugent WA, Finn MG. Mechanistic Studies of the Zirconium−Triisopropanolamine-Catalyzed Enantioselective Addition of Azide to Cyclohexene Oxide. J Org Chem 1998. [DOI: 10.1021/jo9809377] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brent W. McCleland
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and The DuPont Company, Central Research and Development, P.O. Box 80328, Wilmington, Delaware 19880-0328
| | - William A. Nugent
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and The DuPont Company, Central Research and Development, P.O. Box 80328, Wilmington, Delaware 19880-0328
| | - M. G. Finn
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, and The DuPont Company, Central Research and Development, P.O. Box 80328, Wilmington, Delaware 19880-0328
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29
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Wu MH, Jacobsen EN. Asymmetric Ring Opening of Meso Epoxides with Thiols: Enantiomeric Enrichment Using a Bifunctional Nucleophile. J Org Chem 1998. [DOI: 10.1021/jo980155d] [Citation(s) in RCA: 97] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael H. Wu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
| | - Eric N. Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
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30
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Eppley AW, Totah NI. A new chiral titanium species for the ring opening reactions of meso epoxides. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)01035-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Mizuno M, Kanai M, Iida A, Tomioka K. An external chiral ligand controlled enantioselective opening of oxirane and oxetane by organolithiums. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00701-1] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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33
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O'Brien P, Poumellec P. Chiral base-mediated rearrangement of meso-cyclohexene oxides to allylic alcohols. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)01824-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Mizuno M, Kanai M, Iida A, Tomioka K. Chiral ligand controlled enantioselective opening of oxirane and oxetane. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00312-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Cole BM, Shimizu KD, Krueger CA, Harrity JPA, Snapper ML, Hoveyda AH. Entwicklung von chiralen Katalysatoren durch kombinatorische Ligandenvariation – Ti-katalysierte enantioselektive Addition von TMSCN anmeso-Epoxide. Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961081509] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Nozaki K, Yoshida M, Takaya H. Chiral Bimetallic Boronic Esters: A Donor–Acceptor Coexisting Receptor for Amines. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1996. [DOI: 10.1246/bcsj.69.2043] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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Asami M, Inoue S. Reconfirmation of high enantiomeric excesses in the enantioselective transformation of meso-epoxides. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00723-l] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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38
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Adolfsson H, Moberg C. Chiral lewis acid catalysed asymmetric nucleophilic ring opening of cyclohexene oxide. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00263-o] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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39
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40
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Chiral Lewis acid catalysts. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s1874-5156(06)80005-3] [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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