1
|
Tanpure SD, Blakemore PR. Stereospecific Synthesis of Conjugated Dienes by Carbenoid Eliminative Cross‐Coupling Using Lithiated Allylic Carbamates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Paul R. Blakemore
- Department of Chemistry Oregon State University Corvallis OR 97331 USA
| |
Collapse
|
2
|
Castellano C, Sacchetti A, Meneghetti F. Spectroscopic, Structural, and Computational Characterization of Three Bispidinone Derivatives, as Ligands for Enantioselective Metal Catalyzed Reactions. Chirality 2016; 28:332-9. [PMID: 26899470 DOI: 10.1002/chir.22586] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/12/2016] [Accepted: 01/20/2016] [Indexed: 11/11/2022]
Abstract
Three chiral derivatives of the alkaloid sparteine (bispidines), characterized by the 3,7-diazabicyclo[3.3.1]nonane moiety, were designed as efficient ligands in a number of enantioselective reactions due to their metal coordination properties. A full evaluation of the 3D properties of the compounds was carried out, as the geometrical features of the bicyclic framework are strictly related to the efficiency of the ligands in the asymmetric catalysis. The selected molecules have different molecular complexity for investigating the effects of different chiral groups on the bicycle conformation. We report here a thorough analysis of their molecular arrangement, by NMR spectroscopy, single crystal X-ray crystallography, and computational techniques, which put in evidence their conformational preferences and the parameters needed for the design of more efficient ligands in asymmetric synthetic routes. The results confirmed the high molecular flexibility of the compounds, and indicated how to achieve a control of the chair-chair/boat-chair conformational ratio, by adjusting the relative size of the substituents on the piperidine nitrogens.
Collapse
Affiliation(s)
| | - Alessandro Sacchetti
- Department of Chemistry, Materials and Chemical Engineering (CMIC) 'Giulio Natta,' Politecnico di Milano, Milano,, Italy
| | - Fiorella Meneghetti
- Department of Pharmaceutical Sciences (DISFARM), University of Milan, Milano, Italy
| |
Collapse
|
3
|
Fournier AM, Nichols CJ, Vincent MA, Hillier IH, Clayden J. Lithium Choreography: Intramolecular Arylations of Carbamate-Stabilised Carbanions and Their Mechanisms Probed by In Situ IR Spectroscopy and DFT Calculations. Chemistry 2012; 18:16478-90. [DOI: 10.1002/chem.201201761] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 08/29/2012] [Indexed: 11/10/2022]
|
4
|
Barbion J, Sorin G, Selkti M, Kellenberger E, Baati R, Santoro S, Himo F, Pancrazi A, Lannou MI, Ardisson J. Stereoselective functionalization of pyrrolidinone moiety towards the synthesis of salinosporamide A. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
5
|
Hémery T, Becker J, Fröhlich R, Hoppe D. (-)-Myrtenyl N,N-Diisopropylcarbamate: Stereochemistry of Lithiation and Electrophilic Substitution Directed by Dynamic Kinetic Diastereoisomer Resolution. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000390] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
6
|
|
7
|
Becker J, Fröhlich R, Salorinne K, Hoppe D. Asymmetric Homoaldol Reactions with Cyclohex-2-enylN,N-Diisopropylcarbamate: Kinetic Resolution, Elucidation of the Stereochemical Course and Applications in the Synthesis of Hexahydroisobenzofuran-4-(1H)-ones. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700219] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
8
|
Chrétien JM, Zammattio F, Gauthier D, Le Grognec E, Paris M, Quintard JP. Preparation of Allyltin Reagents Grafted on Solid Support: Clean and Easily Recyclable Reagents for Allylation of Aldehydes. Chemistry 2006; 12:6816-28. [PMID: 16755634 DOI: 10.1002/chem.200501595] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The preparation of polymer-supported allyltin reagents was shown to be possible for both unfunctionalized and functionalized allyl units. These reagents were treated with aldehydes in the presence of cerium(III) or indium(III) salts to afford high yields of homoallylic alcohols, practically uncontaminated with organotin residues (less than 5 ppm). Some mechanism aspects are briefly discussed and the potential for regeneration and reuse of these supported reagents is pointed out.
Collapse
Affiliation(s)
- Jean-Mathieu Chrétien
- Laboratoire de Synthèse Organique, UMR 6513, Faculté des Sciences et des Techniques, Université de Nantes, CNRS, 2 rue de la Houssinière, BP 92208, 44322 Nantes cedex 3, France
| | | | | | | | | | | |
Collapse
|
9
|
Reuber J, Fröhlich R, Hoppe D. Asymmetric γ-Deprotonation and Substitution Reactions of (Z)-1,3-Diphenyl-1-propenylN,N-Diisopropylcarbamate. European J Org Chem 2005. [DOI: 10.1002/ejoc.200500145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
10
|
Enantioselective Synthesis by Lithiation Adjacent to Oxygen and Electrophile Incorporation. TOP ORGANOMETAL CHEM 2003. [DOI: 10.1007/3-540-36117-0_4] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
11
|
Basu A, Thayumanavan S. Konfigurative Stabilität und Stereoinformationstransfer in Reaktionen Enantiomeren-angereicherter Organolithium-Reagentien. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020301)114:5<740::aid-ange740>3.0.co;2-r] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
12
|
Abstract
[reaction: see text] Three different N-silyl-protected allylamines, i.e., N-TMS, N-TBDMS, and N-TIPS allylamine, were lihtiated by reaction with excess n-butyllithium. Crystallization of the resulting dianions and X-ray structure determination yields three uniquely different aggregates.
Collapse
Affiliation(s)
- P G Williard
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA.
| | | |
Collapse
|
13
|
Hoppe D, Kaiser B, Stratmann O, Fröhlich R. Herstellung und Reaktionen einer hoch enantiomerenangereicherten, ungewöhnlich konfigurationsstabilen α-Benzylthiolithiumverbindung. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971092412] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
14
|
Hoppe D, Hense T. Enantioselektive Synthese mit Lithium/(−)-Spartein-Carbanion-Paaren. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971092105] [Citation(s) in RCA: 200] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
15
|
Micouin L, Oestreich M, Knochel P. Stereoselektive Herstellung und Reaktionen von Cycloalkylzinkverbindungen. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090323] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
16
|
D�lling W, Hocke I, Verjus P, Biedermann M, Hartung H. Enantiomere und diastereomere 2-Methoxymethyl-pyrrolidin-1-dithiocarbons�ureester. MONATSHEFTE FUR CHEMIE 1997. [DOI: 10.1007/bf00807097] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
17
|
Reggelin M, Weinberger H, Gerlach M, Welcker R. Metalated 2-Alkenylsulfoximines: Efficient Solutions for Asymmetric d3-Synthons. J Am Chem Soc 1996. [DOI: 10.1021/ja9530735] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Reggelin
- Contribution from the Institut für Organische Chemie der Johann-Wolfgang-Goethe-Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt/Main, Germany
| | - Heinz Weinberger
- Contribution from the Institut für Organische Chemie der Johann-Wolfgang-Goethe-Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt/Main, Germany
| | - Matthias Gerlach
- Contribution from the Institut für Organische Chemie der Johann-Wolfgang-Goethe-Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt/Main, Germany
| | - Reinhard Welcker
- Contribution from the Institut für Organische Chemie der Johann-Wolfgang-Goethe-Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt/Main, Germany
| |
Collapse
|
18
|
Knochel P. Asymmetrische Deprotonierung zur effizienten enantioselektiven Synthese von funktionalisierten sekundären Alkoholen. Angew Chem Int Ed Engl 1992. [DOI: 10.1002/ange.19921041108] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
19
|
Boche G, Opel A, Marsch M, Harms K, Hallera F, Lohrenz JCW, Thümmler C, Koch W. α-Oxygen-Substituted Organolithium Compounds and Their Carbenoid Nature: Calculations of the Configurational Stability and of LiCH2OH Model Structures, Crystal Structure of Diphenyl(trimethylsilyloxy)methyllithium · 3 THF, and the Stereochemistry of the (Reverse) Brook Rearrangement. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/cber.19921251015] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
20
|
Zschage O, Hoppe D. 1-(N,N-Diisopropylcarbamoyloxy)-1,3-dimethylallyllithium·(−)-sparteine: stereochemistry of the enantioselective carboxylation and methoxycarbonylation. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)86587-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
21
|
Paetow M, Ahrens H, Hoppe D. Chiral α,ω-dioxy-carbanions from 1,3-propanediol and 1,4-butanediol by sparteine-assisted deprotonation. Enantioselective synthesis of 1,3- and 1,4-diols, (R)-pantolactone, and a cyclopropane. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)79083-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
22
|
Zschage O, Schwark JR, Krämer T, Hoppe D. Enantiomerically enriched 1-(N,N-diisopropylcarbamoyloxy)-1,3-dimethylallyllithium: stereochemistry of the stannylation, titanation, and the homoaldol reaction. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)86586-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
23
|
Sparteine complexes of lithiated primary O-2-alkenyl carbamates stereochemistry of the lithium-titanium exchange and application for the synthesis of enantiomerically enriched γ-lactones. Tetrahedron 1992. [DOI: 10.1016/0040-4020(92)80016-9] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
24
|
Peschke B, Lüßmann J, Hoppe D, Dyrbusch Z. Diastereo- and enantioselective synthesis of 1,2:5,6-diepoxy-4-hydroxyalkyl carbamates. – regioselective ring opening and their transformation into doublyC-branched deoxy sugar analogues. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/cber.19921250620] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
25
|
Hirsch R, Hoffmann RW. Chiral Organometallic Reagents, V[1] A Test on the Configurational Stability of Chiral Organolithium Compounds Based on Kinetic Resolution; Scope and Limitations. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/cber.19921250432] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
26
|
Marsch M, Harms K, Zschage O, Hoppe D, Boche G. η1-(1S,2E)-1-(N, N-Diisopropylcarbamoyloxy)-3-trimethylsilyl-allyllithium-(-)-Spartein: Struktur einer chiralen, Carbamoyloxy-substituierten Allyllithium-Verbindung. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911030327] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
27
|
Hoppe D, Hintze F, Tebben P. Chirale Lithium-1-oxyalkanide durch asymmetrische Deprotonierung; enantioselektive Synthese von 2-Hydroxyalkansäuren und sekundären Alkanolen. Angew Chem Int Ed Engl 1990. [DOI: 10.1002/ange.19901021218] [Citation(s) in RCA: 94] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
28
|
Hoppe D, Carstens A, Krämer T. Erzeugung eines konfigurationsstabilen, chiralen Benzyllithium-Derivates und kapriziöse Stereochemie seiner elektrophilen Substitution. Angew Chem Int Ed Engl 1990. [DOI: 10.1002/ange.19901021217] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|