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Di Iulio GA, Mahon MF, Caggiano L. Exploring Convergent Two‐Step Synthetic Approaches to the Pancratistatin Framework. ChemistrySelect 2022. [DOI: 10.1002/slct.202202703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gemma A. Di Iulio
- Medicinal Chemistry Section Department of Life Sciences University of Bath Bath BA2 7AY UK
| | - Mary F. Mahon
- Department of Chemistry University of Bath Bath BA2 7AY UK
| | - Lorenzo Caggiano
- Medicinal Chemistry Section Department of Life Sciences University of Bath Bath BA2 7AY UK
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2
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Puriņš M, Waser J. Asymmetric Cyclopropanation and Epoxidation via a Catalytically Formed Chiral Auxiliary. Angew Chem Int Ed Engl 2022; 61:e202113925. [PMID: 35029319 PMCID: PMC9306854 DOI: 10.1002/anie.202113925] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Indexed: 11/07/2022]
Abstract
For the enantioselective diversification of a single starting material, a different chiral catalyst is usually required for each transformation. Herein, we extend the concept of catalytically formed chiral auxiliary from hydrogenation to the asymmetric cyclopropanation and epoxidation of tetra-substituted olefins, alleviating the need for different chiral catalysts in the alkene functionalization step. The chiral auxiliary is catalytically constructed from propargylic amines in a Pd-catalyzed enantioselective carboetherification step using a commercially available trifluoroacetaldehyde hemiacetal tether. The installed auxiliary is then controlling the stereochemistry of the cyclopropanation and the epoxidation using standard highly reactive reagents to give enantioenriched spirocyclic aminomethylcyclopropanols and α-amino-α-hydroxy ketones.
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Affiliation(s)
- Mikus Puriņš
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
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3
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Puriņš M, Waser J. Asymmetric Cyclopropanation and Epoxidation via a Catalytically Formed Chiral Auxiliary. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mikus Puriņš
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis and NCCR Catalysis Institut des Sciences et Ingénierie Chimique Ecole Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland
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4
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Lepage RJ, Moore PW, Hewitt RJ, Teesdale-Spittle PH, Krenske EH, Harvey JE. Mechanistic Studies on the Base-Promoted Ring Opening of Glycal-Derived gem-Dibromocyclopropanes. J Org Chem 2021; 87:301-315. [PMID: 34932347 DOI: 10.1021/acs.joc.1c02366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the presence of a nucleophilic base, ring-fused gem-dibromocyclopropanes derived from d-glycals undergo ring opening to give 2-deoxy-2-(E-bromomethylene)glycosides. Such cleavage of an exocyclic cyclopropane bond contrasts with the more usual silver-promoted ring-expansion reactions in which endocyclic bond cleavage occurs. Experimental and theoretical studies are reported which provide insights into the reaction mechanism and the origin of its kinetic selectivity for E-configured bromoalkene products. Density functional theory computations (M06-2X) predict that the reaction commences with alkoxide-induced HBr elimination from the dibromocyclopropane to form a bromocyclopropene. Ring opening then gives a configurationally stable zwitterionic (oxocarbenium cation/vinyl carbanion) intermediate, which undergoes nucleophilic addition and protonation to give the bromoalkene. There are two competing sources of the proton in the final step: One is the alcohol (co)solvent, and the other is the molecule of alcohol produced during the initial deprotonation step. The roles of the formed alcohol molecule and the bulk (co)solvent are demonstrated by isotope-labeling studies performed with deuterated solvents. The acid-promoted isomerization of the E-bromoalkene product into the corresponding Z-bromoalkene is also described. The mechanistic knowledge gained in this investigation sheds light on the unusual chemistry of this system and facilitates its future application in new settings.
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Affiliation(s)
- Romain J Lepage
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Peter W Moore
- School of Chemical and Physical Sciences, Centre for Biodiscovery, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Russell J Hewitt
- School of Chemical and Physical Sciences, Centre for Biodiscovery, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Paul H Teesdale-Spittle
- School of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Joanne E Harvey
- School of Chemical and Physical Sciences, Centre for Biodiscovery, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
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5
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Chi X, Meng L, Pang Q, Guo L, Liu Q, Zhao P, Zhang D, Sun F, Li X, Liu H. Palladium‐Catalyzed Domino Process to Construct 2,3,9,9
a
‐Tetrahydro‐1
H
‐Fluorene Derivatives:Transient σ‐Alkylpalladium(II) Complex Mediated C(sp
2
)‐H Bond Activation. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xiaochen Chi
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Long Meng
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Qingyang Pang
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Lianfeng Guo
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Qing Liu
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Pingping Zhao
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
- College of chemical and environmental engineeringShandong university of science and technology 579 Qianwangang Road Qingdao 266590 P. R. China
| | - Daopeng Zhang
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Fenggang Sun
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Xinjin Li
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Hui Liu
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
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6
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Sharp PP, Mikusek J, Ho J, Krenske EH, Banwell MG, Coote ML, Ward JS, Willis AC. Mechanistic Studies on the Base-Promoted Conversion of Alkoxy-Substituted, Ring-Fused gem-Dihalocyclopropanes into Furans: Evidence for a Process Involving Electrocyclic Ring Closure of a Carbonyl Ylide Intermediate. J Org Chem 2018; 83:13678-13690. [PMID: 30281974 DOI: 10.1021/acs.joc.8b01766] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The mechanism associated with the base-promoted conversion of alkoxy-substituted and ring-fused gem-dihalocyclopropanes such as 40 into annulated furans has been explored. Treatment of compound 40 with potassium tert-butoxide affords a mixture of furans 23/27 and 41, an outcome that suggests the intermediacy of the slowly interconverting carbonyl ylides 42 and 43 that undergo rapid [1,5]-electrocyclizations and subsequent dehydrohalogenation to afford the observed products. This proposal is supported by ab initio MO and DFT calculations that also suggest a vinylcarbene insertion pathway is less likely to be operative.
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Affiliation(s)
- Phillip P Sharp
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Jiri Mikusek
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Junming Ho
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia.,School of Chemistry , The University of New South Wales , Sydney , NSW 2052 , Australia
| | - Elizabeth H Krenske
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Martin G Banwell
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Michelle L Coote
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia.,ARC Centre of Excellence for Electromaterials Science, Research School of Chemistry , The Australian National University , Canberra ACT 2601 , Australia
| | - Jas S Ward
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Anthony C Willis
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
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7
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Kraft S, Ryan K, Kargbo RB. Recent Advances in Asymmetric Hydrogenation of Tetrasubstituted Olefins. J Am Chem Soc 2017; 139:11630-11641. [DOI: 10.1021/jacs.7b07188] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Stefan Kraft
- Drug Discovery Services,
Medicinal Chemistry, Albany Molecular Research Inc., 26 Corporate Circle, Albany, New York 12201-5098, United States
| | - Kristen Ryan
- Drug Discovery Services,
Medicinal Chemistry, Albany Molecular Research Inc., 26 Corporate Circle, Albany, New York 12201-5098, United States
| | - Robert B. Kargbo
- Drug Discovery Services,
Medicinal Chemistry, Albany Molecular Research Inc., 26 Corporate Circle, Albany, New York 12201-5098, United States
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8
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Meloche JL, Ashfeld BL. A Rhodium(II)‐Catalyzed Formal [4+1]‐Cycloaddition toward Spirooxindole Pyrrolone Construction Employing Vinyl Isocyanates as 1,4‐Dipoles. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701147] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jennifer L. Meloche
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556 USA
| | - Brandon L. Ashfeld
- Department of Chemistry and Biochemistry University of Notre Dame Notre Dame IN 46556 USA
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9
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Meloche JL, Ashfeld BL. A Rhodium(II)-Catalyzed Formal [4+1]-Cycloaddition toward Spirooxindole Pyrrolone Construction Employing Vinyl Isocyanates as 1,4-Dipoles. Angew Chem Int Ed Engl 2017; 56:6604-6608. [PMID: 28466963 DOI: 10.1002/anie.201701147] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/17/2017] [Indexed: 11/11/2022]
Abstract
A RhII -catalyzed, formal [4+1]-cycloaddition between diazooxindoles as electrophilic C1 synthons and 1,3-heterodienes for the construction of spirooxindole pyrrolones is described. Employing vinyl isocyanates as 1,4-dipoles, the cycloannulation occurs under relatively mild conditions and provides the corresponding pyrrolones in good to excellent yields.
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Affiliation(s)
- Jennifer L Meloche
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
| | - Brandon L Ashfeld
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA
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10
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Synthesis of 2-bromo-1-aryl-1H-indenes via a Ag(I) promoted domino 2π-electrocyclic ring-opening/4π-electrocyclization reaction of 1,2-diaryl substituted gem-dibromocyclopropanes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Kakde BN, Bhunia S, Bisai A. Approach to the core structure of abeo-abietanes and gibberellins via Stork–Danheiser sequence followed by Friedel–Crafts alkylations. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Nifant’ev IE, Ivchenko PV, Bagrov VV, Churakov AV, Mercandelli P. 5-Methoxy-Substituted Zirconium Bis-indenyl ansa-Complexes: Synthesis, Structure, and Catalytic Activity in the Polymerization and Copolymerization of Alkenes. Organometallics 2012. [DOI: 10.1021/om300160v] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ilya E. Nifant’ev
- Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia
119991
- A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Prospect,
Moscow, Russia 119991
| | - Pavel V. Ivchenko
- Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia
119991
| | - Vladimir V. Bagrov
- Chemistry Department, M.V. Lomonosov Moscow State University, Moscow, Russia
119991
| | - Andrei V. Churakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry RAS, 31 Leninsky
Prospect, Moscow, Russia 119991
| | - Pierluigi Mercandelli
- Dipartimento di Chimica Strutturale
e Stereochimica Inorganica, Università degli Studi di Milano,
Via Giacomo Venezian 21, I-20133 Milano, Italy
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13
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Yang R, Chen JB, Dai XY, Huang R, Xiao CF, Gao ZY, Yang B, Yang LJ, Yan SJ, Hong-Bin Zhang, Qing C, Lin J. Inclusion complex of GA-13315 with cyclodextrins: Preparation, characterization, inclusion mode and properties. Carbohydr Polym 2012; 89:89-97. [DOI: 10.1016/j.carbpol.2012.02.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 02/18/2012] [Accepted: 02/20/2012] [Indexed: 11/26/2022]
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14
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Schumacher A, Schrems MG, Pfaltz A. Enantioselective Synthesis of cis-1,2-Disubstituted Cyclopentanes and Cyclohexanes by Suzuki-Miyaura Cross-Coupling and Iridium-Catalyzed Asymmetric Hydrogenation. Chemistry 2011; 17:13502-9. [DOI: 10.1002/chem.201102650] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Indexed: 11/12/2022]
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15
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Hewitt RJ, Harvey JE. Synthesis of Oxepines and 2-Branched Pyranosides from a d-Glucal-Derived gem-Dibromo-1,2-cyclopropanated Sugar. J Org Chem 2010; 75:955-8. [DOI: 10.1021/jo902306a] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Russell J. Hewitt
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
| | - Joanne E. Harvey
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
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16
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Schrems MG, Neumann E, Pfaltz A. Iridium-Catalyzed Asymmetric Hydrogenation of Unfunctionalized Tetrasubstituted Olefins. Angew Chem Int Ed Engl 2007; 46:8274-6. [PMID: 17886819 DOI: 10.1002/anie.200702555] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marcus G Schrems
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, 4056 Basel, Switzerland
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17
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Schrems M, Neumann E, Pfaltz A. Iridium-katalysierte asymmetrische Hydrierung nichtfunktionalisierter tetrasubstituierter Alkene. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200702555] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Stanislawski PC, Willis AC, Banwell MG. gem-Dihalocyclopropanes as Building Blocks in Natural-Product Synthesis: Enantioselective Total Syntheses ofent-Erythramine and 3-epi-Erythramine. Chem Asian J 2007; 2:1127-36. [PMID: 17694511 DOI: 10.1002/asia.200700155] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
ent-Erythramine ((-)-1), the enantiomer of the alkaloid erythramine, was prepared in 15 steps from known compounds. The first of three pivotal bond-forming steps in the synthesis was a Suzuki-Miyaura cross-coupling reaction of the starting materials to give a bis-silyl ether. The second involved silver(I)-induced electrocyclic ring opening of the gem-dichlorocyclopropane formed in the next step and trapping of the ensuing pi-allyl cation by the tethered nitrogen atom to give, following cleavage of the allyloxycarbonyl protecting group, an approximately 5:6 mixture of the chromatographically separable diastereoisomeric spirocyclic products. In the third critical bond-forming reaction, the iodide formed from one of the diastereoisomers underwent a radical-addition/elimination reaction sequence that led to (-)-1 in 89 % yield. The application of the same sequence of transformations to the other diastereoisomer afforded 3-epi-(+)-erythramine (3-epi-(+)-1).
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Affiliation(s)
- Pauline C Stanislawski
- Research School of Chemistry, Institute of Advanced Studies, The Australian National University, Canberra, ACT 0200, Australia
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Zhang H, Cao WG, Ren ZJ, Chen J, Sun RS, Hu JR, Qian JX, Deng HM. Simple Approach to the Highly Stereoselective Synthesis oftrans-1,2-Cyclopropane Derivatives. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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