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Sadlej A, Jaźwiński J. Complexation in situ of 1-methylpiperidine, 1,2-dimethylpyrrolidin, and 1,2-dimethylpiperidine with rhodium(II) tetracarboxylates: Nuclear magnetic resonance spectroscopy, chiral recognition, and density functional theory studies. Chirality 2021; 33:660-674. [PMID: 34425025 DOI: 10.1002/chir.23345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 07/11/2021] [Accepted: 07/12/2021] [Indexed: 11/07/2022]
Abstract
Complexation in situ of 1-methylpiperidine, racemic 1,2-dimethylpyrrolidin, and racemic 1,2-dimethylpiperidine with rhodium(II) tetracarboxylates in chloroform was studied by 1 H and 13 C nuclear magnetic resonance (NMR) spectroscopy and density functional theory (DFT) methods. As substrates, three dirhodium(II) compounds were applied, tetraacetate, tetrakistrifluoroacetate, and a derivative of optically pure Mosher's acid. Due to conformational flexibility, free and complexed ligands can adopt potentially various conformations. The NMR titration experiments revealed the subsequent formation of 1:1 and 1:2 complexes, depending on the molar ratio of substrate to ligand. Conformations of free and complexed ligands were examined by the comparison of experimental and DFT gauge-independent atomic orbital (GIAO) calculated chemical shifts and by the analysis of the internal energy of the compounds. For some ligand and substrate combinations, a mixture of complexes differing in ligand conformations was formed. Complexes of Mosher's acid derivative of rhodium(II) with racemic 1,2-dimethylpyrrolidin and 1,2-dimethylpiperidine exhibited NMR chiral recognition phenomenon, manifested by splitting of signals in 13 C NMR and 1 H,13 C HSQC spectra.
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Affiliation(s)
- Agnieszka Sadlej
- Institute of Organic Chemistry, Polish Academy of Sciences, Warszawa, Poland
| | - Jarosław Jaźwiński
- Institute of Organic Chemistry, Polish Academy of Sciences, Warszawa, Poland
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Efficient Oxidative Resolution of 1-Phenylphosphol-2-Ene and Diels–Alder Synthesis of Enantiopure Bicyclic and Tricyclic P-Stereogenic C-P Heterocycles. Symmetry (Basel) 2020. [DOI: 10.3390/sym12030346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
1-Phenylphosphol-2-ene 1-oxide is effectively resolved by L-menthyl bromoacetate to afford both SP and RP enantiomers of 1-phenylphosphol-2-ene 1-oxide on a multigram scale. The resolved 1-phenylphosphol-2-ene oxide has been found to undergo face-selective and endo-selective cycloadditions with a series of acyclic and cyclic dienes to produce enantiopure P-stereogenic C-P heterocycles of hexahydrophosphindole and hexahydrobenzophosphindole as well as phospha[5.2.1.02,6]decene and phospha[5.2.2.02,6]undecene structures. Conversions of these cycloadducts to the fully saturated heterocyclic systems as well as to their P (III), P = S, P = Se and P-BH3 derivatives have been demonstrated to occur with retention of configuration and preservation of configurational homogeneity at P. A perplexing case of stereomutation at P during reduction of a tricyclic β-hydroxy phosphine oxide by PhSiH3 at 80 °C has been recorded.
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Głaszczka R, Jaźwiński J. Complexation of selenomethionine and its derivatives with some dimeric rhodium(II) tetracarboxylates: 1H and 13C nuclear magnetic resonance spectroscopy. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.126908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Głaszczka R, Leniak A, Jaźwiński J. Ternary complexes consisting of chiral rhodium(II) tetracarboxylates, derivatives of amino acid and triphenylphosphine: The 31P NMR study. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lim KMH, Hayashi T. Dynamic Kinetic Resolution in Rhodium-Catalyzed Asymmetric Arylation of Phospholene Oxides. J Am Chem Soc 2017; 139:8122-8125. [DOI: 10.1021/jacs.7b04570] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kelvin Meng-Hui Lim
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Department
of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
- Institute
of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Tamio Hayashi
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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Cmoch P, Głaszczka R, Jaźwiński J, Kamieński B, Senkara E. Adducts of nitrogenous ligands with rhodium(II) tetracarboxylates and tetraformamidinate: NMR spectroscopy and density functional theory calculations. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2014; 52:61-68. [PMID: 24327228 DOI: 10.1002/mrc.4035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 09/29/2013] [Accepted: 11/04/2013] [Indexed: 06/03/2023]
Abstract
Complexation of tetrakis(μ2-N,N'-diphenylformamidinato-N,N')-di-rhodium(II) with ligands containing nitrile, isonitrile, amine, hydroxyl, sulfhydryl, isocyanate, and isothiocyanate functional groups has been studied in liquid and solid phases using (1)H, (13)C and (15)N NMR, (13)C and (15)N cross polarisation-magic angle spinning NMR, and absorption spectroscopy in the visible range. The complexation was monitored using various NMR physicochemical parameters, such as chemical shifts, longitudinal relaxation times T1 , and NOE enhancements. Rhodium(II) tetraformamidinate selectively bonded only unbranched amine (propan-1-amine), pentanenitrile, and (1-isocyanoethyl)benzene. No complexation occurred in the case of ligands having hydroxyl, sulfhydryl, isocyanate, and isothiocyanate functional groups, and more expanded amine molecules such as butan-2-amine and 1-azabicyclo[2.2.2]octane. Such features were opposite to those observed in rhodium(II) tetracarboxylates, forming adducts with all kind of ligands. Special attention was focused on the analysis of Δδ parameters, defined as a chemical shift difference between signal in adduct and corresponding signal in free ligand. In the case of (1)H NMR, Δδ values were either negative in adducts of rhodium(II) tetraformamidinate or positive in adducts of rhodium(II) tetracarboxylates. Experimental findings were supported by density functional theory molecular modelling and gauge independent atomic orbitals chemical shift calculations. The calculation of chemical shifts combined with scaling procedure allowed to reproduce qualitatively Δδ parameters.
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Affiliation(s)
- Piotr Cmoch
- Institute of Organic Chemistry PAS, ul. Kasprzaka 44/52, 01-224, Warsaw, Poland
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Głaszczka R, Jaźwiński J. Complexation of heteroaromatic N-oxides with rhodium(II) tetracarboxylates in solution: DFT and NMR investigations. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jaźwiński J, Sadlej A. Complexation of rhodium(II) tetracarboxylates with aliphatic diamines in solution: 1H and 13C NMR and DFT investigations. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2013; 51:662-670. [PMID: 23943201 DOI: 10.1002/mrc.3997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 07/15/2013] [Accepted: 07/15/2013] [Indexed: 06/02/2023]
Abstract
The complexation of rhodium(II) tetraacetate, tetrakistrifluoroaceate and tetrakisoctanoate with a set of diamines (ethane-1,diamine, propane-1,3-diamine and nonane-1,9-diamine) and their N,N'-dimethyl and N,N,N',N'-tetramethyl derivatives in chloroform solution has been investigated by (1) H and (13) C NMR spectroscopy and density functional theory (DFT) modelling. A combination of two bifunctional reagents, diamines and rhodium(II) tetracarboxylates, yielded insoluble coordination polymers as main products of complexation and various adducts in the solution, being in equilibrium with insoluble material. All diamines initially formed the 2 : 1 (blue), (1 : 1)n oligomeric (red) and 1 : 2 (red) axial adducts in solution, depending on the reagents' molar ratio. Adducts of primary and secondary diamines decomposed in the presence of ligand excess, the former via unstable equatorial complexes. The complexation of secondary diamines slowed down the inversion at nitrogen atoms in NH(CH3 ) functional groups and resulted in the formation of nitrogenous stereogenic centres, detectable by NMR. Axial adducts of tertiary diamines appeared to be relatively stable. The presence of long aliphatic chains in molecules (adducts of nonane-1,9-diamines or rhodium(II) tetrakisoctanoate) increased adduct solubility. Hypothetical structures of the equatorial adduct of rhodium(II) tetraacetate with ethane-1,2-diamine and their NMR parameters were explored by means of DFT calculations.
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Affiliation(s)
- Jarosław Jaźwiński
- Institute of Organic Chemistry PAS, ul. Kasprzaka 44/52, 01-224, Warsaw, Poland
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Duddeck H, Tóth G, Simon A, Gómez ED, Mattiza JT. Adamantanes as spherical nanosondes in adducts with a chiral dirhodium complex-discriminating enantiomers and probing spatial proximities. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2011; 49:328-342. [PMID: 21452345 DOI: 10.1002/mrc.2751] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 02/10/2011] [Indexed: 05/30/2023]
Abstract
Three different kinds of substituted chiral adamantane molecules-adamantanones, dioxolanoadamantanes and dithiolano-adamantanes-were studied in the dirhodium experiment (NMR measurement with 1:1 molar mixtures with Rh((II))(2)[(R)-(+)-MTPA](4) in CDCl(3)). Their different behavior in adduct formation is described, and the possibility of determining enantiomeric purities and absolute configurations is explored. Detailed inspection of one- and two-dimensional NMR experiments allowed for an interpretation of steric and electronic intra-adduct interaction showing that the phenyl groups of Rh* tend to enwrap the bound adamantane ligand so that through-space effects over a range of 6-7 Å away from the binding rhodium atom can be observed. Even slight differences in the relative orientation of phenyl groups can be monitored when comparing diastereomeric adducts via NMR signal dispersion.
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Affiliation(s)
- Helmut Duddeck
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1B, D-30167 Hannover, Germany.
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Mattiza JT, Fohrer JGG, Duddeck H, Gardiner MG, Ghanem A. Optimizing dirhodium(ii) tetrakiscarboxylates as chiral NMR auxiliaries. Org Biomol Chem 2011; 9:6542-50. [PMID: 21808807 DOI: 10.1039/c1ob05665d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Jens T Mattiza
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167, Hannover, Germany
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Wenzel TJ, Chisholm CD. Assignment of absolute configuration using chiral reagents and NMR spectroscopy. Chirality 2010; 23:190-214. [DOI: 10.1002/chir.20889] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 05/18/2010] [Indexed: 11/11/2022]
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Mattiza JT, Meyer VJ, Duddeck H. Stereoisomeric 2-butylphenylsulfoxides and their binding modes in the adduct formation with an enantiopure dirhodium tetracarboxylate complex. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.01.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kollár L, Keglevich G. P-Heterocycles as Ligands in Homogeneous Catalytic Reactions. Chem Rev 2010; 110:4257-302. [DOI: 10.1021/cr900364c] [Citation(s) in RCA: 228] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L. Kollár
- University of Pécs, Department of Inorganic Chemistry, H-7624 Pécs, Hungary
| | - G. Keglevich
- Budapest University of Technology and Economics, Department of Organic Chemistry and Technology, H-1521 Budapest, Hungary
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Gómez ED, Duddeck H. A new method proposed for the determination of absolute configurations of alpha-amino acids. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2009; 47:222-227. [PMID: 19072975 DOI: 10.1002/mrc.2374] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Enantiopure alpha-amino acids were converted to 4-substituted 2-aryl- and 2-alkyl-5(4H)-oxazolones under partial racemization. These nonracemic mixtures were dissolved in CDCl(3), an equimolar amount of the chiral dirhodium complex Rh(II)(2)[(R)-(+)-MTPA](4) (MTPA-H = Mosher's acid) was added, and the (1)H NMR spectra of the resulting samples were recorded (dirhodium method). The relative intensities of (1)H signals dispersed by the formation of diastereomeric adducts allow to determine the absolute configuration (AC) of the starting alpha-amino acids. Binding atoms in the adducts were identified by comparing the (1)H and (13)C chemical shifts of the oxazolones in the absence and presence of Rh(II)(2)[(R)-(+)-MTPA](4). Thereby, information about the scope and limits of this method can be extracted. A protocol how to use this method is presented.
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Affiliation(s)
- Edison Díaz Gómez
- Leibniz University Hannover, Institute of Organic Chemistry, Schneiderberg 1B, D-30167 Hannover, Germany.
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Gómez ED, Doğan I, Yilmaz M, Demir-Ordu O, Albert D, Duddeck H. Atropisomeric 3-aryl-2-oxo-4-oxazolidinones and some thione analogues—Enantiodifferentiation and ligand competition in applying the dirhodium method. Chirality 2008; 20:344-50. [PMID: 17663406 DOI: 10.1002/chir.20446] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The atropisomeric 2-oxo-4-oxazolidinones 1Z bind weakly to the rhodium atoms in the complex Rh(II)2 [(R)-(+)-MTPA]4 (Rh*, MTPA-H = methoxytrifluoromethylphenylacetic acid identical with Mosher's acid), presumably via the C-2 carbonyl oxygen atom. There are some 1H and 13C NMR signals in these compounds which show small dispersion effects suitable for enantiodifferentiation. In contrast, the thiocarbonyl sulfur atoms in 2Z and 3Z bind strongly so that significant complexation shifts (Delta delta) and diastereomeric dispersion effects (Delta nu) can be observed, and chiral discrimination and the determination of enantiomeric ratios of these thiocarbonyl compounds is easy. So, it is shown that--as expected--C=S is a much better binding site when competing with C=O. In compounds of Series 2 a "syn-methyl effect" was discovered which describes the dependence of dispersion effects of syn-oriented methyl groups 6 on the nature of the substituents Z. A mechanism of combined steric and electronic interaction influencing the conformational equilibria inside the adducts is proposed. Determination of absolute configurations by correlation fails, at least on the basis of the data available.
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Affiliation(s)
- Edison Díaz Gómez
- Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg, Hannover, Germany
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Duddeck H, Díaz Gómez E, Frelek J, Woznica M, Kowalska P, Jaźwiński J. Chalcogen Atom Competition in the Coordination of Bicyclic β-Lactam Derivatives to a Dirhodium Tetracarboxylate Complex. HETEROCYCLES 2007. [DOI: 10.3987/com-07-s(w)13] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Díaz Gómez E, Albert D, Mattiza J, Duddeck H, Chojnowski J, Cypryk M. Enantiodifferentiation of a silane and the analogous hydrocarbon by the dirhodium method—silane⋯dirhodium complex interaction. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.05.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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