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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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Zhan C, Han Z, Patrick BO, Gates DP. 2-Aminophenolate ligands for phosphorus(v): a lithium salt featuring the chiral [P(OC 6H 4NR) 3] - anion. Dalton Trans 2018; 47:12118-12129. [PMID: 30065977 DOI: 10.1039/c8dt02522c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Phosphoranes P(OC6H4NR)2(OC6H4NHR) [R = Me (2a), Ph (2b), C6F5 (2c)] were synthesized by treating PCl5 with the respective 2-aminophenol derivative (1a-c, 3.1 equiv.). In one instance, an intermediate species, P(OC6H4NR)2Cl [R = Me (3a)], was isolated and structurally characterized. Deprotonation of the amine moieties (-NH[combining low line]R) in phosphoranes 2a and 2b with a strong alkali-metal base (e.g. n-BuLi) in the presence of a strong-donor solvent (e.g. THF) afforded salts composed of the hexacoordinate P(v)-anions [P(OC6H4NR)3]- (R = Me, [4a]-; Ph, [4b]-). Employing precursor 2a, the salt Li(THF)3fac-[4a]- was isolated. The X-ray crystal of each enantiomer of [4a]- was determined and, to our knowledge, represents the first structurally characterized example of a salt containing a hexacoordinate P(v)N3O3 anion featuring P(v)-N bonds.
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Affiliation(s)
- Chuantian Zhan
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, CanadaV6T 1Z1.
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Mironov VF, Dimukhametov MN, Mironova EV, Krivolapov DB, Abdrakhmanova LM. Caged C-P phosphoranes based on 2-(2-methyl-4-oxopent-2-yloxy)- and 2-[2-(methylcarbonyl)-1-phenoxy]-1,3,2-benzodioxaphospholes and diethyl mesoxalate. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215020152] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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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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Ali TE. Synthesis and Spectral Characterization of Some Novel Phosphonyl- and Phosphoryl Pyrazole Compounds. HETEROATOM CHEMISTRY 2013. [DOI: 10.1002/hc.21110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tarik E. Ali
- Department of Chemistry; Faculty of Education, Ain Shams University; Roxy; Cairo; Egypt
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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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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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Kumara Swamy K, Gangadhararao G, Rama Suresh R, Bhuvan Kumar N, Chakravarty M. Exploring organic reactions using simple cyclodiphosphazanes. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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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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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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Swamy KCK, Kumar NNB, Balaraman E, Kumar KVPP. Mitsunobu and Related Reactions: Advances and Applications. Chem Rev 2009; 109:2551-651. [PMID: 19382806 DOI: 10.1021/cr800278z] [Citation(s) in RCA: 868] [Impact Index Per Article: 57.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - N. N. Bhuvan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
| | - E. Balaraman
- School of Chemistry, University of Hyderabad, Hyderabad − 500046, A. P., India
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Jiang XD, Matsukawa S, Yamamoto Y. Synthesis, structure and isomerization of arylphosphoranes with anti-apicophilic bonding modes using a novel bidentate ligand with two C(2)F(5) groups. Dalton Trans 2008:3678-87. [PMID: 18615213 DOI: 10.1039/b802947d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of anti-apicophilic pentacoordinate phosphoranes (with one chelating substituent in an O-equatorial, C-apical bonding mode at pentacoordinated phosphorus atom) bearing a para-substituted aryl group (-C(6)H(4)(p-X); X = H, CF(3), F, OMe) or a mesityl (2,4,6-trimethylphenyl) group were isolated using a novel bulky bidentate ligand with two C(2)F(5) groups. These phosphoranes were stable to isomerization at room temperature, and quantitatively converted into the corresponding more stable isomers (O-apical) at elevated temperatures in solution. On the basis of a kinetic study, the free energy of activation (DeltaG(double dagger)) of the stereomutation of the O-equatorial mesitylphosphorane to its O-apical isomer was higher than that of the CF(3) derivative by 2.6 kcal mol(-1), giving rise to a further example of the steric effect of the C(2)F(5) group to freeze the isomerization of the pentacoordinate phosphorus compounds. Kinetic measurements of the isomerization of the O-equatorial ortho-unsubstituted derivatives (-C(6)H(4)(p-X)) to the corresponding O-apical isomers suggested that the O-equatorial isomers were stabilized by the pi --> sigma*(P-O) interaction in the ground state.
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Affiliation(s)
- Xin-Dong Jiang
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
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Jiang XD, Matsukawa S, Yamamichi H, Kakuda KI, Kojima S, Yamamoto Y. Stereomutation and Experimental Determination of the Relative Stability of DiastereomericO-Equatorial Anti-Apicophilic Spirophosphoranes. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700971] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Pavan Kumar KVP, Kumara Swamy KC. The first structural study on a cyclic tricoordinate phosphorochloridite and a pentacoordinate phosphorane based on 1,2,3,5-protected myo-inositol—a new conformation of 1,3,2-dioxaphosphorinane ring. Carbohydr Res 2007; 342:1182-8. [PMID: 17379195 DOI: 10.1016/j.carres.2007.02.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Revised: 02/23/2007] [Accepted: 02/23/2007] [Indexed: 11/18/2022]
Abstract
Treatment of the phosphoramidite [myo-C(6)H(6)-2-[OC(O)Ph]-1,3,5-(O(3)CH)-4,6-(O(2)P-NH-i-Pr)] with o-chloranil affords the first example of inositol-based pentacoordinate phosphorane [myo-C(6)H(6)-2-[OC(O)Ph]-1,3,5-(O(3)CH)-4,6-(O(2)P-NH-i-Pr)(1,2-O(2)C(6)Cl(4))] (9) (X-ray structure) with a trigonal bipyramidal geometry at phosphorus. The six-membered 1,3,2-dioxaphosphorinane ring with the inositol residue has an unusual boat conformation in 9 which is quite different from that found in unrestrained rings investigated before, but is similar to that of its P(III) chloro precursor [myo-C(6)H(6)-2-[OC(O)Ph]-1,3,5-(O(3)CH)-4,6-(O(2)PCl)] (X-ray structure). Also, a convenient and chromatography-free procedure for the protected myo-inositol derivative [myo-C(6)H(6)-2-[OC(O)Ph]-1,3,5-(O(3)CH)-4,6-(OH)(2)] is reported.
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Affiliation(s)
- K V P Pavan Kumar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, AP, India
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Vandermeeren L, Leyssens T, Peeters D. Theoretical study of the properties of sulfone and sulfoxide functional groups. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.theochem.2006.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Jiang XD, Kakuda KI, Matsukawa S, Yamamichi H, Kojima S, Yamamoto Y. Synthesis and Application of a Bidentate Ligand Based on Decafluoro-3-phenyl-3-pentanol: Steric Effect of Pentafluoroethyl Groups on the Stereomutation of O-Equatorial C-Apical Spirophosphoranes. Chem Asian J 2007; 2:314-23. [PMID: 17441167 DOI: 10.1002/asia.200600334] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
1,1,1,2,2,4,4,5,5,5-Decafluoro-3-phenyl-3-pentanol was prepared by a Cannizzaro-type disproportionation reaction, and the dimetallated compound was used as a bidentate ligand, which is bulkier than the Martin ligand (1,1,1,3,3,3-hexafluoro-2-phenyl-2-propanol). A P-H spirophosphorane was synthesized by utilizing the new bidentate ligand, and the structure of the product was essentially the same as that of the P-H phosphorane with Martin ligands. Phosphoranes that exhibit reversed apicophilicity (O-equatorial) were also synthesized and could be converted into the corresponding stable stereoisomers (O-apical). The crystal structures of O-equatorial phosphoranes and the O-apical isomers were slightly affected by the steric repulsion of pentafluoroethyl groups. Kinetic measurements revealed that the stereomutation of O-equatorial methylphosphorane to the O-apical isomer was slowed. The activation enthalpy for the stereomutation of the former to the latter was higher than that of the phosphorane with Martin ligands by 5.1 kcal mol(-1).
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Affiliation(s)
- Xin-Dong Jiang
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima 739-8526, Japan
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Kumara Swamy KC, Balaraman E, Pavan MP, Bhuvan Kumar NN, Praveen Kumar K, Satish Kumar N. Unusual products in the reactions of phosphorus(III) compounds with N=N, C≡C or conjugated double-bonded systems. J CHEM SCI 2006. [DOI: 10.1007/bf02703946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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