1
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Jiang XD, Toya Y, Matsukawa S, Kojima S, Jimenez-Halla JOC, Shang R, Nakamoto M, Yamamoto Y. Synthesis and characterization of a pair of O- fac/O- mer 12-P-6 alkyloxaphosphates with a P-O-C-C four-membered ring. Chem Sci 2019; 10:3466-3472. [PMID: 30996936 PMCID: PMC6432329 DOI: 10.1039/c8sc05158e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 02/15/2019] [Indexed: 11/21/2022] Open
Abstract
The synthesis and characterization of a stereoisomer pair of 12-P-6 alkyloxaphosphates synthesised from pentacoordinate phosphoranes.
Structurally characterized hexacoordinate organophosphorus compounds remain rare due to their highly reactive nature and thermal instability. Herein we report the first synthesis of a pair of O-facial and O-meridional hexacoordinate oxaphosphates (5B and 5D) obtained from the O-apical and O-equatorial β-hydroxyalkylphosphoranes 3 and 4. This was achieved by using the bulky C2F5-groups on the ortho-substituted aryl backbone. Calculations of the relative energies of possible isomers indicate 5B and 5D are thermodynamic products. Although the mechanisms of their formation and the determining factor of stereo-selectivity are still unclear, their isolation and structure conformation contributes to a formulation of a viable strategy for diastereoselective synthesis of heteroleptic hexacoordinate organophosphates.
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Affiliation(s)
- Xin-Dong Jiang
- College of Applied Chemistry , Shenyang University of Chemical Technology , Shenyang , 110142 , China
| | - Yuya Toya
- Department of Chemistry , Graduate School of Science , Hiroshima University , Higashi-hiroshima , 7398526 , Japan .
| | - Shiro Matsukawa
- Department of Chemistry , Graduate School of Science , Hiroshima University , Higashi-hiroshima , 7398526 , Japan .
| | - Satoshi Kojima
- Department of Chemistry , Graduate School of Science , Hiroshima University , Higashi-hiroshima , 7398526 , Japan .
| | - J Oscar C Jimenez-Halla
- Department of Chemistry , Division of Natural and Exact Sciences , University of Guanajuato , Campus Gto, Noria Alta s/n 36050 , Guanajuato , Mexico
| | - Rong Shang
- Department of Chemistry , Graduate School of Science , Hiroshima University , Higashi-hiroshima , 7398526 , Japan .
| | - Masaaki Nakamoto
- Department of Chemistry , Graduate School of Science , Hiroshima University , Higashi-hiroshima , 7398526 , Japan .
| | - Yohsuke Yamamoto
- Department of Chemistry , Graduate School of Science , Hiroshima University , Higashi-hiroshima , 7398526 , Japan .
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2
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Sun C, Cao S, Zhao P, Ma W, Guo Y, Zhao Y. The investigation on the N H reactivity of pentacoordinate spirophosphoranes by H/D exchange and NMR experiments. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.09.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Hamlin TA, van Beek B, Wolters LP, Bickelhaupt FM. Nucleophilic Substitution in Solution: Activation Strain Analysis of Weak and Strong Solvent Effects. Chemistry 2018; 24:5927-5938. [PMID: 29457865 PMCID: PMC5947303 DOI: 10.1002/chem.201706075] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Indexed: 12/23/2022]
Abstract
We have quantum chemically studied the effect of various polar and apolar solvents on the shape of the potential energy surface (PES) of a diverse collection of archetypal nucleophilic substitution reactions at carbon, silicon, phosphorus, and arsenic by using density functional theory at the OLYP/TZ2P level. In the gas phase, all our model SN 2 reactions have single-well PESs, except for the nucleophilic substitution reaction at carbon (SN 2@C), which has a double-well energy profile. The presence of the solvent can have a significant effect on the shape of the PES and, thus, on the nature of the SN 2 process. Solvation energies, charges on the nucleophile or leaving group, and structural features are compared for the various SN 2 reactions in a spectrum of solvents. We demonstrate how solvation can change the shape of the PES, depending not only on the polarity of the solvent, but also on how the charge is distributed over the interacting molecular moieties during different stages of the reaction. In the case of a nucleophilic substitution at three-coordinate phosphorus, the reaction can be made to proceed through a single-well [no transition state (TS)], bimodal barrier (two TSs), and then through a unimodal transition state (one TS) simply by increasing the polarity of the solvent.
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Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Bas van Beek
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Lando P. Wolters
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institute of Molecules and Materials (IMM)Radboud University NijmegenHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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4
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Sietzen M, Batke S, Merz L, Wadepohl H, Ballmann J. Pitfalls and Limitations in Group 6 Triamidophosphane Chemistry: Cage‐Closure Restrictions in Square‐Pyramidal Nitrido Complexes and Degradation via Spiro‐[4.4]‐λ
5
‐Amidophosphorane Formation. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Malte Sietzen
- Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Im Neuenheimer Feld 276 69120 Heidelberg Germany
| | - Sonja Batke
- Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Im Neuenheimer Feld 276 69120 Heidelberg Germany
| | - Lukas Merz
- Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Im Neuenheimer Feld 276 69120 Heidelberg Germany
| | - Hubert Wadepohl
- Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Im Neuenheimer Feld 276 69120 Heidelberg Germany
| | - Joachim Ballmann
- Anorganisch‐Chemisches Institut Ruprecht‐Karls‐Universität Heidelberg Im Neuenheimer Feld 276 69120 Heidelberg Germany
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5
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Polyancev FM, Metlushka KE, Sadkova DN, Khisametdinova ZR, Kataeva ON, Alfonsov VA, Latypov SK, Sinyashin OG. The isomeric structure of pentacoordinate chiral spirophosphoranes in solution by the combined use of NMR experiments and GIAO DFT calculations of NMR parameters. Dalton Trans 2017; 46:8146-8156. [PMID: 28607987 DOI: 10.1039/c7dt01605k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The interplay of NMR experiments and DFT calculations of NMR parameters is a reliable method for determining the relative configurations of pentacoordinate chiral spirophosphoranes bearing two six- or five-membered rings at the phosphorus atom in solution. The major product of the Betti based derivatives corresponds to the isomers with both substituents at chiral carbons being opposite to the P-H proton. The next populated product corresponds to the isomer with different chiralities at carbons. The least populated isomer is one with both substituents being at the same side of the heterocycle as the P-H bond.
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Affiliation(s)
- Fedor M Polyancev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov str. 8, Kazan, 420088, Russian Federation.
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6
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Adlu M, Aliveisi R, Yavari I. NaCN-catalized diastereoselective synthesis of meso-bisphosphonates from dialkyl(aryl) phosphites and acetylenic esters in aqueous acetone. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1217211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Maryam Adlu
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Rahman Aliveisi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Issa Yavari
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
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7
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Mironov VF, Dimukhametov MN, Efimov SV, Aminova RM, Karataeva FK, Krivolapov DB, Mironova EV, Klochkov VV. Stereoselective PCO/POC-Rearrangement of P-C-Cage Phosphorane in the Reaction of 4,5-Dimethyl-2-(2-oxo-1,2-diphenyl)ethoxy-1,3,2-dioxaphospholane with Hexafluoroacetone. J Org Chem 2016; 81:5837-50. [PMID: 27258739 DOI: 10.1021/acs.joc.6b00356] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Interaction of 4,5-dimethyl-2-(2-oxo-1,2-diphenyl)ethoxy-1,3,2-dioxaphospholane, bearing a carboxyl group in the γ-position with respect to the phosphorus atom and obtained from d,l-butanediol, with hexafluoroacetone (CCl4, -40 °C) leads to the simultaneous formation of regio- and stereoisomeric cage-like phosphoranes with phosphorus-carbon and phosphorus-oxygen bonds with a high stereoselectivity (>95%), whose structure was determined by 1D and 2D NMR spectroscopy and XRD. When stored as a solution in dichloromethane for one month, the PCO-isomer rearranges into the thermodynamically more stable POC-isomer of the cage-like phosphorane. Mild hydrolysis of the PCO/POC-isomers proceeds with a high chemoselectivity and leads to the formation of P(IV)-dioxaphospholane derivatives. Acidic hydrolysis of the POC-isomer leads to the formation of an oxirane derivative with an unexpectedly high stereoselectivity (>95%). DFT calculations (using the PBE functional) allowed us to obtain structures and energies of the initial phospholane, reaction products (PCO/POC-isomers), and an intermediate P(V)-oxaphosphirane.
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Affiliation(s)
- Vladimir F Mironov
- A.E. Arbuzov Institute of Organic and Physical Chemistry of the Russian Academy of Sciences , Arbuzov str. 8, Kazan 420088, Russian Federation
| | - Mudaris N Dimukhametov
- A.E. Arbuzov Institute of Organic and Physical Chemistry of the Russian Academy of Sciences , Arbuzov str. 8, Kazan 420088, Russian Federation
| | - Sergey V Efimov
- Institute of Physics, Kazan Federal University , Kremlevskaya str. 18, Kazan 420008, Russian Federation
| | - Roza M Aminova
- Institute of Physics, Kazan Federal University , Kremlevskaya str. 18, Kazan 420008, Russian Federation
| | - Farida Kh Karataeva
- Institute of Physics, Kazan Federal University , Kremlevskaya str. 18, Kazan 420008, Russian Federation
| | - Dmitry B Krivolapov
- A.E. Arbuzov Institute of Organic and Physical Chemistry of the Russian Academy of Sciences , Arbuzov str. 8, Kazan 420088, Russian Federation
| | - Ekaterina V Mironova
- A.E. Arbuzov Institute of Organic and Physical Chemistry of the Russian Academy of Sciences , Arbuzov str. 8, Kazan 420088, Russian Federation
| | - Vladimir V Klochkov
- Institute of Physics, Kazan Federal University , Kremlevskaya str. 18, Kazan 420008, Russian Federation
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8
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Baccolini G. The Possible Role of Cyclic Pentacoordinate Phosphorus Intermediates in the Origin and Evolution of Life. are Phosphoric Anhydride and Trimetaphosphates Prebiotic Reagents? PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2015.1083569] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Graziano Baccolini
- Dipartimento di Chimica Industriale “Toso Montanari,” ALMA MATER STUDIORUM − Università di Bologna, Bologna, Italy
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9
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Marcos E, Crehuet R, Anglada JM. Inductive and External Electric Field Effects in Pentacoordinated Phosphorus Compounds. J Chem Theory Comput 2015; 4:49-63. [PMID: 26619979 DOI: 10.1021/ct700220z] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pentacoordination at phosphorus is associated with a nucleophilic displacement reaction at tetracoordinated phosphorus compounds and shows a great variability in what respects their geometrical and energetic features. By means of a systematic theoretical study on a series of elementary model compounds, we have analyzed the bonding features. The pentacoordinated phosphorus compounds are held together by dative bonds, and the geometry and stability depends on the inductive effects originated by different substitutes at phosphorus. We show also that an external electric field can modify the geometrical features and the reactivity of the nucleophilic substitution reactions. This issue may have great interest in biological reactions involving pentacoordinated phosphorus where the electric field originated by the folded protein could influence the catalytic process. We report also additional calculations on the geometry and NMR spectra on three triphenyl phosphonium ylide derivatives, and our results compare well with the experimental data.
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Affiliation(s)
- Enrique Marcos
- Grup de Química Teòrica i Computacional, Departament de Química Orgànica Biològica, Institut d'Investigacions Químiques i Ambientals de Barcelona, IIQAB - CSIC, c/ Jordi Girona 18, E-08034 Barcelona, Spain
| | - Ramon Crehuet
- Grup de Química Teòrica i Computacional, Departament de Química Orgànica Biològica, Institut d'Investigacions Químiques i Ambientals de Barcelona, IIQAB - CSIC, c/ Jordi Girona 18, E-08034 Barcelona, Spain
| | - Josep M Anglada
- Grup de Química Teòrica i Computacional, Departament de Química Orgànica Biològica, Institut d'Investigacions Químiques i Ambientals de Barcelona, IIQAB - CSIC, c/ Jordi Girona 18, E-08034 Barcelona, Spain
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10
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DeYonker NJ, Webster CE. A Theoretical Study of Phosphoryl Transfers of Tyrosyl-DNA Phosphodiesterase I (Tdp1) and the Possibility of a "Dead-End" Phosphohistidine Intermediate. Biochemistry 2015; 54:4236-47. [PMID: 26121557 DOI: 10.1021/acs.biochem.5b00396] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tyrosyl-DNA phosphodiesterase I (Tdp1) is a DNA repair enzyme conserved across eukaryotes that catalyzes the hydrolysis of the phosphodiester bond between the tyrosine residue of topoisomerase I and the 3'-phosphate of DNA. Atomic level details of the mechanism of Tdp1 are proposed and analyzed using a fully quantum mechanical, geometrically constrained model. The structural basis for the computational model is the vanadate-inhibited crystal structure of human Tdp1 (hTdp1, Protein Data Bank entry 1RFF ). Density functional theory computations are used to acquire thermodynamic and kinetic data along the catalytic pathway, including the phosphoryl transfer and subsequent hydrolysis. Located transition states and intermediates along the reaction coordinate suggest an associative phosphoryl transfer mechanism with five-coordinate phosphorane intermediates. Similar to both theoretical and experimental results for phospholipase D, the proposed mechanism for hTdp1 also includes the thermodynamically favorable possibility of a four-coordinate phosphohistidine "dead-end" product.
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Affiliation(s)
- Nathan J DeYonker
- ‡Department of Chemistry, The University of Memphis, 213 Smith Chemistry Building, Memphis, Tennessee 38152, United States
| | - Charles Edwin Webster
- †Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States.,‡Department of Chemistry, The University of Memphis, 213 Smith Chemistry Building, Memphis, Tennessee 38152, United States
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11
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Tavakoli Z, Yavari I. Diastereoselective One-Pot Synthesis of Phosphorylated N,N′-Methylenediacrylamides. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.947414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ziba Tavakoli
- Department of Chemistry, Islamic Azad University, Science and Research Branch, Ponak, Tehran, Iran
| | - Issa Yavari
- Department of Chemistry, Islamic Azad University, Science and Research Branch, Ponak, Tehran, Iran
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12
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Betz R. The structures of phenylphosphonic-acid-mono-(2-hydroxy-phenyl)ester and phenylphosphonic-acid-mono-(3-hydroxy-naphthalen-2-yl)ester – A combined experimental and theoretical study. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.11.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Habibi-Khorassani SM, Maghsoodlou MT, Ghodsi F, Hazeri N, Kazemian MA, Nassiri M, Khandan-Barani K, Masoomi Z, Rashid M, Rezaei M, Abedi AR. Determination of the relative stability of the two gauche and anti-configurations in the synthesis of new β-aminophosphonate esters: theoretical studies. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-013-1123-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Baccolini G, Micheletti G. A Fast Catalytic Process of Transfer of a Phosphorus Atom: How Folding of the Reagent is Related to its Catalytic Activity. A Possible Correlation with Rna Behavior. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2014.883625] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Graziano Baccolini
- Dipartimento di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM − Universita’ di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
| | - Gabriele Micheletti
- Dipartimento di Chimica Industriale “Toso Montanari”, ALMA MATER STUDIORUM − Universita’ di Bologna, Viale Risorgimento, 4-40136 Bologna, Italy
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15
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Balalaie S, Baoosi L, Tahoori F, Rominger F, Bijanzadeh HR. Synthesis of functionalized 2,5-dihydro-1,2-oxaphospholes via one-pot three-component reaction. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0460-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Aroylspirophosphoranes bearing two naphth-1,8-diyl-8-oxy groups: synthesis, crystal structure, and np(Oapical)→π∗(CO) charge transfer interaction. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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DeYonker NJ, Webster CE. Phosphoryl transfers of the phospholipase D superfamily: a quantum mechanical theoretical study. J Am Chem Soc 2013; 135:13764-74. [PMID: 24007383 DOI: 10.1021/ja4042753] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The HKD-containing Phospholipase D superfamily catalyzes the cleavage of the headgroup of phosphatidylcholine to produce phosphatidic acid and choline. The mechanism of this cleavage process is studied theoretically. The geometric basis of our models is the X-ray crystal structure of the five-coordinate phosphohistidine intermediate from Streptomyces sp . Strain PMF (PDB Code = 1V0Y ). Hybrid ONIOM QM:QM methodology with Density Functional Theory (DFT) and semiempirical PM6 (DFT:PM6) is used to acquire thermodynamic and kinetic data for the initial phosphoryl transfer, subsequent hydrolysis, and finally, the formation of the experimentally observed ″dead-end″ phosphohistidine product (PDB Code = 1V0W ). The model contains nineteen amino acid residues (including the two highly conserved HKD-motifs), four explicit water molecules, and the substrate. Via computations, the persistence of the short-lived five-coordinate phosphorane intermediate on the minutes times scale is rationalized. This five-coordinate phosphohistidine intermediate energetically exists between the hydrolysis event and ″substrate reorganization″ (the reorganization of the in vitro model substrate within the active site). Computations directly support the thermodynamic favorability of the in vitro four-coordinate phosphohistidine product. In vivo, the activation energy of substrate reorganization is too high, perhaps due to a combination of substrate immobility when embedded in the lipid bilayer, as well as its larger steric bulk compared to the compound used in the in vitro substrate soaks. On this longer time scale, the enzyme will migrate along the lipid membrane toward its next substrate target, rather than promote the formation of the dead-end product.
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Affiliation(s)
- Nathan J DeYonker
- The Department of Chemistry, The University of Memphis , 213 Smith Chemistry Building, Memphis, Tennessee 38152-3550, United States
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18
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Tilvawala R, Pratt RF. Covalent Inhibition of Serine β-Lactamases by Novel Hydroxamic Acid Derivatives. Biochemistry 2013; 52:3712-20. [DOI: 10.1021/bi4003887] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ronak Tilvawala
- Department of Chemistry, Wesleyan University, Lawn Avenue, Middletown, Connecticut
06459, United States
| | - R. F. Pratt
- Department of Chemistry, Wesleyan University, Lawn Avenue, Middletown, Connecticut
06459, United States
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19
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Preliminary stereochemical investigation of the Atherton–Todd-type reaction between valine hydrospirophosphorane and phenols. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.09.056] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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20
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Jiang XD, Matsukawa S, Kojima S, Yamamoto Y. Synthesis and characterization of antiapicophilic arsoranes and related compounds. Inorg Chem 2012; 51:10996-1006. [PMID: 23013474 DOI: 10.1021/ic3014893] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Utilizing bulky bidentate ligand systems with C(2)F(5) and n-C(3)F(7) groups, antiapicophilic arsoranes (5b and 5c, respectively) were synthesized. A kinetic study on the isomerization of these arsoranes to their more stable isomers showed that the barriers increased in the order of CF(3) < C(2)F(5) < n-C(3)F(7) in accord with their steric bulk. It was also revealed that the degree of freezing isomerization was larger for the change from CF(3) to C(2)F(5) than from C(2)F(5) to n-C(3)F(7), obvious from the differences in activation free energy at 363 K of 1.6 and 0.3 kcal mol(-1), respectively. X-ray structural analysis of several precursors of these two systems disclosed the unique structures of these compounds.
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Affiliation(s)
- Xin-Dong Jiang
- The Key Laboratory for Special Functional Materials, Ministry of Education, Henan University, Kaifeng, 475-004, China.
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21
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Li S, Chen W, Yu G, Huang X, Sun C. Theoretical investigation on structures, stability and properties of [P, X, Y] (X=C, Si; Y = O, S) isomers. Mol Phys 2012. [DOI: 10.1080/00268976.2012.724184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Baccolini G, Delpivo C, Micheletti G. Wittig Reaction: Role of Steric Effects in Explaining the Prevalent Formation of Z Olefin from Nonstabilized Ylides. PHOSPHORUS SULFUR 2012. [DOI: 10.1080/10426507.2012.694000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Graziano Baccolini
- a Department of Organic Chemistry “A. Mangini,” Alma Mater Studiorum , Universita’ di Bologna , Bologna , Italy
| | - Camilla Delpivo
- a Department of Organic Chemistry “A. Mangini,” Alma Mater Studiorum , Universita’ di Bologna , Bologna , Italy
| | - Gabriele Micheletti
- a Department of Organic Chemistry “A. Mangini,” Alma Mater Studiorum , Universita’ di Bologna , Bologna , Italy
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23
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Theoretical investigation of the enzymatic phosphoryl transfer of β-phosphoglucomutase: revisiting both steps of the catalytic cycle. J Mol Model 2012; 18:3169-79. [PMID: 22238068 DOI: 10.1007/s00894-011-1344-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Accepted: 12/19/2011] [Indexed: 10/14/2022]
Abstract
Enzyme catalyzed phosphate transfer is a part of almost all metabolic processes. Such reactions are of central importance for the energy balance in all organisms and play important roles in cellular control at all levels. Mutases transfer a phosphoryl group while nucleases cleave the phosphodiester linkages between two nucleotides. The subject of our present study is the Lactococcus lactis β-phosphoglucomutase (β-PGM), which effectively catalyzes the interconversion of β-D-glucose-1-phosphate (β-G1P) to β-D-glucose-6-phosphate (β-G6P) and vice versa via stabile intermediate β-D-glucose-1,6-(bis)phosphate (β-G1,6diP) in the presence of Mg(2+). In this paper we revisited the reaction mechanism of the phosphoryl transfer starting from the bisphosphate β-G1,6diP in both directions (toward β-G1P and β-G6P) combining docking techniques and QM/MM theoretical method at the DFT/PBE0 level of theory. In addition we performed NEB (nudged elastic band) and free energy calculations to optimize the path and to identify the transition states and the energies involved in the catalytic cycle. Our calculations reveal that both steps proceed via dissociative pentacoordinated phosphorane, which is not a stabile intermediate but rather a transition state. In addition to the Mg(2+) ion, Ser114 and Lys145 also play important roles in stabilizing the large negative charge on the phosphate through strong coordination with the phosphate oxygens and guiding the phosphate group throughout the catalytic process. The calculated energy barrier of the reaction for the β-G1P to β-G1,6diP step is only slightly higher than for the β-G1,6diP to β-G6P step (16.10 kcal mol(-1) versus 15.10 kcal mol(-1)) and is in excellent agreement with experimental findings (14.65 kcal mol(-1)).
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Cyclin-dependent kinases: bridging their structure and function through computations. Future Med Chem 2011; 3:1551-9. [PMID: 21882947 DOI: 10.4155/fmc.11.113] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cyclin-dependent kinases (CDKs) are one of the most promising target families for drug discovery for several diseases, such as cancer and neurodegenerative disorders. Over the years, structural insights on CDKs have demonstrated high protein plasticity, with several cases where two or more structures of the same protein adopt different conformations. This has generated a great deal of interest in understanding the relationship between CDK structure and function. Here, we highlight how computer simulations have recently contributed in characterizing some key rare and transient events in CDKs, such as the reaction transition state and activation loop movement. Although not yet fully defined, we can now portray the enzymatic mechanism and plasticity of CDKs at high spatial and temporal resolution. These theoretical studies bridge with experiments and highlight structural determinants that could help in designing specific CDK inhibitors.
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Hu X, Gao X, Zhu J, Zeng Z, Zhang X, Lin Z, Xu P, Liu Y, Zhao Y. Fragmentation of pentacoordinate spirobicyclic aminoacyl-phosphoranes (P-AAs) by electrospray ionization tandem mass spectrometry concerning P-O and P-N bond cleavage. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:3151-3160. [PMID: 21953971 DOI: 10.1002/rcm.5210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The fragmentation pathways of both protonated and sodiated pentacoordinate spirobicyclic aminoacylphosphoranes (P-AAs) have been studied by electrospray ionization multi-stage mass spectrometry (ESI-MS(n)) in positive mode. The possible pathways and their mechanisms are elucidated through the combination of ESI-MS/MS, isotope ((15)N and (2)H) labeling and high-resolution Fourier transform ion cyclotron resonance (FTICR)-MS/MS. The relative Gibbs free energies (ΔG) of the product ions and possible fragmentation pathways are estimated at the B3LYP/6-31 G(d) level of theory. The theoretical calculations show that both protonated and sodiated P-AAs would quickly fragment before Berry pseudorotation. For protonated P-AAs, they have different tendencies to P-O or P-N bond cleavage. For sodiated P-AAs, the P-N bond is easier to cleave and produces the tetracoordinated phosphorus ion H. These results to some extent may give a clue to the chemistry of the active sites of phosphoryl transfer enzymes and will enrich the gas-phase ESI-MS ion chemistry of pentacoordinate phosphoranes.
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Affiliation(s)
- Xiaomei Hu
- Department of Chemistry and The Key Laboratory for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, PR China
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Charati FR, Moghimi M, Maghsoodlou MT, Habibi-Khorassani SM, Hossaini Z, Maleki N, Skelton BW, Makha M. Synthesis and Dynamic NMR Study of a Functionalized Sulfonamide Phosphonate Diester. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.515951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | | | | | | | - Zinatossadat Hossaini
- d Chemistry Department , Islamic Azad University, Qaemshahr Branch , Mazandaran , Iran
| | - Nariman Maleki
- c Department of Chemistry , The University of Sistan & Baluchestan , Zahedan , Iran
| | - Brian W. Skelton
- e Chemistry School of Biomedical , Biomolecular and Chemical Science, University of Western Australia , Perth , Australia
| | - Mohamed Makha
- e Chemistry School of Biomedical , Biomolecular and Chemical Science, University of Western Australia , Perth , Australia
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Marandi G, Maghsoodlou MT, Hazeri N, Heydari R, Habibi-Khorassani SM, Torbati NA, Sajadikhah SS, Saravani D, Rakhshanipour M, Gholamipour S, Rostami-Charati F, Skelton BW, Makha M, Zare Z, Lashkari M. Synthesis of new phosphonato esters by reaction between triphenyl or trialkyl phosphite and acetylenic diesters in the presence of NH-containing compounds. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Akiba KY. Studies on hypervalent compounds and synthetic work using heteroaromatic cations. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20726] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Kojima S, Nakamoto M, Matsukawa S, Akiba KY. Stereomutation of a diastereomeric pair of 10-P-5 hydroxyphosphoranes. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20712] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Yamamoto Y, Nakao K, Hashimoto T, Matsukawa S, Suzukawa N, Kojima S, Akiba KY. Crystallographic and NMR studies on species intermediate between haloalkoxyphosphoranes and alkoxyphosphonium halides. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20717] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Baccolini G, Boga C, Delpivo C, Micheletti G. Facile synthesis of hydantoins and thiohydantoins in aqueous solution. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Baccolini G, Boga C, Micheletti G. First prebiotic generation of a ribonucleotide from adenine, D-ribose and trimetaphosphate. Chem Commun (Camb) 2011; 47:3640-2. [PMID: 21305098 DOI: 10.1039/c1cc10310e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adenosine monophosphate isomers are obtained by self-assembling of adenine, D-ribose and trimetaphosphate in aqueous solution in good yields. This generation of a ribonucleotide from its three molecular components occurs in a one-pot reaction at room temperature for about 30-40 days and with high chemio-, regio-, and stereo-selectivity. Similar results are obtained with guanine. A mechanism is also proposed.
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Affiliation(s)
- Graziano Baccolini
- Department of Organic Chemistry A. Mangini ALMA MATER STUDIORUM-Università di Bologna Viale del Risorgimento, 4, Italy.
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Baccolini G, Boga C, Micheletti G. The Phosphoenolpyruvate Phosphorylation: A Self-Organized Mechanism with Implications to Understand the RNA Transformations. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426501003598655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Graziano Baccolini
- a Department of Organic Chemistry ‘A. Mangini’ , Alma Mater Studiorum–Universitá di Bologna , Bologna , Italy
| | - Carla Boga
- a Department of Organic Chemistry ‘A. Mangini’ , Alma Mater Studiorum–Universitá di Bologna , Bologna , Italy
| | - Gabriele Micheletti
- a Department of Organic Chemistry ‘A. Mangini’ , Alma Mater Studiorum–Universitá di Bologna , Bologna , Italy
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Liu CT, Maxwell CI, Edwards DR, Neverov AA, Mosey NJ, Brown RS. Mechanistic and Computational Study of a Palladacycle-Catalyzed Decomposition of a Series of Neutral Phosphorothioate Triesters in Methanol. J Am Chem Soc 2010; 132:16599-609. [DOI: 10.1021/ja107144c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. Tony Liu
- Department of Chemistry, Queen’s University, Kingston, Ontario, Canada K7L 3N6
| | | | - David R. Edwards
- Department of Chemistry, Queen’s University, Kingston, Ontario, Canada K7L 3N6
| | - Alexei A. Neverov
- Department of Chemistry, Queen’s University, Kingston, Ontario, Canada K7L 3N6
| | - Nicholas J. Mosey
- Department of Chemistry, Queen’s University, Kingston, Ontario, Canada K7L 3N6
| | - R. Stan Brown
- Department of Chemistry, Queen’s University, Kingston, Ontario, Canada K7L 3N6
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Reaction of 5-oxo-2-phenyl-4,4-bis(trifluoromethyl)-4,5-dihydro-1,3,2-benzodioxaphosphepine with chloral. The synthesis and spatial structure of 5-carbaphosphatrane containing a four-membered ring. Russ Chem Bull 2010. [DOI: 10.1007/s11172-010-0167-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Jiang XD, Yamamoto Y. Synthesis, structure, and reaction of tricoordinate stibine and tetracoordinate stiboranide. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Yang G, Xu Y, Hou J, Zhang H, Zhao Y. Determination of the Absolute Configuration of Pentacoordinate Chiral Phosphorus Compounds in Solution by Using Vibrational Circular Dichroism Spectroscopy and Density Functional Theory. Chemistry 2010; 16:2518-27. [DOI: 10.1002/chem.200902501] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Liao RZ, Yu JG, Himo F. Reaction Mechanism of the Trinuclear Zinc Enzyme Phospholipase C: A Density Functional Theory Study. J Phys Chem B 2010; 114:2533-40. [PMID: 20121060 DOI: 10.1021/jp910992f] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Rong-Zhen Liao
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing, 100875, People’s Republic of China
| | - Jian-Guo Yu
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing, 100875, People’s Republic of China
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing, 100875, People’s Republic of China
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Tapia-Benavides AR, Mendoza-Huizar LH, Pérez-García F, Tlahuext H, Alvarez A, Tlahuextl M. Do Spiroarsoranes Exhibit Polytopal Equilibrium in Solution? Inorg Chem 2010; 49:1496-502. [DOI: 10.1021/ic901740d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Antonio R. Tapia-Benavides
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, 42184 Hidalgo, México
| | - Luis H. Mendoza-Huizar
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, 42184 Hidalgo, México
| | - Francisco Pérez-García
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, 42184 Hidalgo, México
| | - Hugo Tlahuext
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca, 62100 Morelos, México
| | - Alejandro Alvarez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, 42184 Hidalgo, México
| | - Margarita Tlahuextl
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, 42184 Hidalgo, México
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Yang G, Xu Y, Hou J, Zhang H, Zhao Y. Diastereomers of the pentacoordinate chiral phosphorus compounds in solution: absolute configurations and predominant conformations. Dalton Trans 2010; 39:6953-9. [PMID: 20571626 DOI: 10.1039/c001872d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Guochun Yang
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
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Jiang XD, Matsukawa S, Kakuda KI, Fukuzaki Y, Zhao WL, Li LS, Shen HB, Kojima S, Yamamoto Y. Efficient synthesis of tetradecafluoro-4-phenylheptan-4-ol by a Cannizzaro-type reaction and application of the alcohol as a bulky Martin ligand variant for a new anti-apicophilic phosphorane. Dalton Trans 2010; 39:9823-9. [PMID: 20859600 DOI: 10.1039/c0dt00539h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Xin-Dong Jiang
- The Key Laboratory for Special Functional Materials, Ministry of Education, Henan University, Kaifeng, Henan, 475-004, China.
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Maghsoodlou MT, Hazeri N, Habibi-Khorassani SM, Marandi G, Saghatforoush L, Saravani D, Torbati NA, Rostami-Charati F, Khandan-Barani K, Skelton BW, Makha M. Diastereoselective synthesis of chloro- and fluoro-aniline containing phosphonate esters in a three-component condensation. HETEROATOM CHEMISTRY 2010. [DOI: 10.1002/hc.20600] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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44
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Mironov VF, Borisova YY, Burnaeva LM, Krivolapov DB, Litvinov IA, Zverev VV, Musin RZ, Konovalova IV. An unusual cascade reaction of 4,5-dihydro-4,4-bis(trifluoromethyl)-2-phenyl-6,7-(4-chlorobenzo)[e]-1,3,2-dioxaphosphepin-5-one with chloral. MENDELEEV COMMUNICATIONS 2010. [DOI: 10.1016/j.mencom.2010.01.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
In this chapter, new developments and main applications of vibrational circular dichroism (VCD) spectroscopy reported in the last 5 years are described. This includes the determinations of absolute configurations of chiral molecules, understanding solvent effects and modeling solvent-solute explicit hydrogen bonding networks using induced solvent chirality, studies of transition metal complexes and their peculiar and enormous intensity enhancements in VCD spectra, investigations of conformational preference of chiral ligands bound to gold nano particles, and two new advances in applying matrix isolation VCD spectroscopy to flexible, multi-conformational chiral molecules and complexes, and in development of femtosecond laser based VCD instruments for transient VCD monitoring. A brief review of the experimental techniques and theoretical methods is also given. The purpose of this chapter is to provide an up-to-date perspective on the capability of VCD to solve significant problems about chiral molecules in solution, in thin film states, or on surfaces.
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Affiliation(s)
- Guochun Yang
- Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2, Canada
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46
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Aminkhani A, Kabiri R, Habibi-Khorassani SM, Heydari R, Maghsoodlou MT, Marandi G, Lashkari M, Rostamizadeh M. Synthesis of heterocyclic phosphonato esters by reaction between triphenyl phosphite and acetylenic diesters in the presence of sulfur-containing heterocyclic compounds. J Sulphur Chem 2009. [DOI: 10.1080/17415990902839450] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ali Aminkhani
- a Faculty of Science , Islamic Azad University of Khoy , Khoy, Iran
| | - Roya Kabiri
- b Faculty of Chemistry , The University of Tabriz , Tabriz, Iran
| | | | - Reza Heydari
- c Department of Chemistry , The University of Sistan and Baluchestan , Zahedan, Iran
| | | | - Ghasem Marandi
- c Department of Chemistry , The University of Sistan and Baluchestan , Zahedan, Iran
| | - Mojtaba Lashkari
- c Department of Chemistry , The University of Sistan and Baluchestan , Zahedan, Iran
| | - Mohsen Rostamizadeh
- c Department of Chemistry , The University of Sistan and Baluchestan , Zahedan, Iran
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Baccolini G, Micheletti G, Boga C. The Role Played by Phosphorus Hexacoordination in Driving the Stereochemical Outcome of a Phosphination Reaction. J Org Chem 2009; 74:6812-8. [DOI: 10.1021/jo901241d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Graziano Baccolini
- Department of Organic Chemistry ‘A. Mangini’, Alma Mater Studiorum—University of Bologna, Viale del Risorgimento, 4-40136 Bologna, Italy
| | - Gabriele Micheletti
- Department of Organic Chemistry ‘A. Mangini’, Alma Mater Studiorum—University of Bologna, Viale del Risorgimento, 4-40136 Bologna, Italy
| | - Carla Boga
- Department of Organic Chemistry ‘A. Mangini’, Alma Mater Studiorum—University of Bologna, Viale del Risorgimento, 4-40136 Bologna, Italy
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48
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Pavan Kumar K, Phani Pavan M, Kumara Swamy K. Characterization of the first hexacoordinate phosphorus compound with S→P←S bonds. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2009.04.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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49
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Abdrakhmanova LM, Mironov VF, Baronova TA, Krivolapov DB, Litvinov IA, Dimukhametov MN, Musin RZ, Konovalov AI. Stereoselective synthesis of spirophosphoranes with a phosphorus—carbon bond based on 2-(2-acetylphenoxy)benzo-1,3,2-dioxaphosphole. Russ Chem Bull 2009. [DOI: 10.1007/s11172-008-0201-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Matsukawa S, Yamamoto Y, Akiba KY. Solution and Crystal Structure of a Hexacoordinate Phosphoranate Bearing Two Martin Ligands and Two Methyl Groups. PHOSPHORUS SULFUR 2009. [DOI: 10.1080/10426500902718265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Shiro Matsukawa
- a Department of Chemistry, Graduate School of Science , Hiroshima University , Higashi-Hiroshima, Hiroshima, Japan
| | - Yohsuke Yamamoto
- a Department of Chemistry, Graduate School of Science , Hiroshima University , Higashi-Hiroshima, Hiroshima, Japan
| | - Kin-ya Akiba
- b Research Institute for Science and Engineering, Waseda University , Tokyo, Japan
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