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Keller IC, Bauer W, Heinemann FW, Höhn C, Rohwer L, Zenneck U. Optically active P5-deltacyclenes: selective oxidation, ligand properties, and a diastereoselective rearrangement reaction. Dalton Trans 2016; 45:7267-77. [PMID: 27055252 DOI: 10.1039/c6dt00548a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cage-chiral tetra-tert-butyl-P5-deltacyclene is accessible as a pair of highly enriched enantiomers and . The only secondary phosphorus atom P1 of the cage can be selectively oxidized by reaction with t-BuOOH. The P1-oxo species and , allow the direct determination of their ee values. Oxidation occurs with the complete retention of the optical activity of the compounds. The chiroptical properties of and are strongly dominated by their cage chirality, the oxygen atom does not contribute significantly. Elemental sulfur and selenium oxidize P5 with high preference to yield P5-thio- and P5-seleno-P5-deltacyclenes and of the intact cages again. Longer reaction time and more than stoichiometric amounts of selenium, leads to tri-seleno-P5-tetracycloundecane , a partially opened oxidized rearrangement product. The ligand properties of racemic were determined. Diphosphetane phosphorus atom P2 of is the active donor center to bind a Cr(CO)5 fragment, but a tautomerization of takes place if [(benzene)RuCl2]2 is added. A hydrogen atom migrates from P1 to the oxygen atom to form a phosphinous acid ligand. The lone pair of P1 is regenerated and acts as the active ligand function of the cage in this case. As for , the base n-BuLi induces an efficient cage rearrangement reaction of , where P1 and the neighboring carbon atom C4 containing its t-Bu substituent change places. C4 moves to its new position without breaking the bond with P5, this way forming the novel P1-oxo-P5-norsnoutene cage in a highly diastereoselective process.
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Affiliation(s)
- I C Keller
- Department Chemie & Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany.
| | - W Bauer
- Department Chemie & Pharmazie, Universität Erlangen-Nürnberg, Henkestr. 42, 91054 Erlangen, Germany
| | - F W Heinemann
- Department Chemie & Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany.
| | - C Höhn
- Department Chemie & Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany.
| | - L Rohwer
- Department Chemie & Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany.
| | - U Zenneck
- Department Chemie & Pharmazie, Universität Erlangen-Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany.
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Höhn C, Bauer W, Heinemann FW, Huguet Torrell S, Keller IC, Rohwer L, Shubina TE, Zenneck U. Optically Active P
5
‐Deltacyclenes: A Unique Cage‐Inversion Reaction and Some Transition‐Metal Complexes of the Rearranged Cage. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Christine Höhn
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, http://https://www.chemie.uni‐erlangen.de/dcp/department/emeriti‐etc/ulrich‐zenneck/
| | - Walter Bauer
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Henkestr. 42, 91054 Erlangen, Germany
| | - Frank W. Heinemann
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, http://https://www.chemie.uni‐erlangen.de/dcp/department/emeriti‐etc/ulrich‐zenneck/
| | - Sergi Huguet Torrell
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, http://https://www.chemie.uni‐erlangen.de/dcp/department/emeriti‐etc/ulrich‐zenneck/
| | - Irene C. Keller
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, http://https://www.chemie.uni‐erlangen.de/dcp/department/emeriti‐etc/ulrich‐zenneck/
| | - Lars Rohwer
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, http://https://www.chemie.uni‐erlangen.de/dcp/department/emeriti‐etc/ulrich‐zenneck/
| | - Tatyana E. Shubina
- Computer Chemistry Center, Universität Erlangen‐Nürnberg, Nägelsbachstr. 25, 91052 Erlangen, Germany
| | - Ulrich Zenneck
- Department Chemie & Pharmazie, Universität Erlangen‐Nürnberg, Egerlandstr. 1, 91058 Erlangen, Germany, http://https://www.chemie.uni‐erlangen.de/dcp/department/emeriti‐etc/ulrich‐zenneck/
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Alvarez MA, García ME, García-Vivó D, Lozano R, Ramos A, Ruiz MA. Mild P–P Bond Cleavage in the Methyldiphosphenyl Complex [Mo2Cp2(μ-PCy2)(μ-κ2:κ2-P2Me)(CO)2] To Give Novel Phosphide-Bridged Trinuclear Derivatives. Inorg Chem 2014; 53:11261-73. [DOI: 10.1021/ic501857f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- M. Angeles Alvarez
- Departamento
de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - M. Esther García
- Departamento
de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Daniel García-Vivó
- Departamento
de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Raquel Lozano
- Departamento
de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Alberto Ramos
- Instituto Nacional del Carbón, Spanish Research Council for Scientific Research (CSIC), Francisco Pintado Fe 26, E-33011 Oviedo, Spain
| | - Miguel A. Ruiz
- Departamento
de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
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Huang CYD, Doyle AG. The chemistry of transition metals with three-membered ring heterocycles. Chem Rev 2014; 114:8153-98. [PMID: 24869559 DOI: 10.1021/cr500036t] [Citation(s) in RCA: 374] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Nesterov V, Espinosa A, Schnakenburg G, Streubel R. A Novel N,P,C Cage Complex Formed by Rearrangement of a Tricyclic Phosphirane Complex: On the Importance of Non-covalent Interactions. Chemistry 2014; 20:7010-6. [DOI: 10.1002/chem.201305061] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Indexed: 11/11/2022]
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Seidl M, Schiffer M, Bodensteiner M, Timoshkin AY, Scheer M. Reactivity of bridged pentelidene complexes with isonitriles: a new way to pentel-containing heterocycles. Chemistry 2013; 19:13783-91. [PMID: 24038598 DOI: 10.1002/chem.201301928] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Indexed: 11/07/2022]
Abstract
The reaction of [Cp*E{W(CO)5 }2 ] (E=P (1 a), As (1 b); Cp*=1,2,3,4,5-pentamethylcyclopentadienyl) with isonitriles RNC (R=tBu, cyclohexyl (Cy), nBu) depends on the steric demand of the substituent at the isonitrile as well as on the stoichiometry of the starting materials. With tBuNC only the Lewis acid/base adducts [Cp*E{W(CO)5 }2 (CNtBu)] (E=P (2 a), As (2 b)) are formed. The use of Cy and n-butylisonitrile leads first to the formation of the Lewis acid/base adduct, but only at low temperatures. At ambient temperatures, a rearrangement occurs and bicyclo[3.2.0]heptane derivatives of the type [{C(Me)C(CH2 )C(Me)C(Me)C(Me)}C(NR)- E{W(CO)5 }2 ] (E=P, As; R=Cy, nBu) (3 a-Cy, 3 b-Cy, 3 a-nBu and 3 b-nBu) are obtained. The use of a further equivalent of isonitrile results in products revealing two new structural motifs, the four-membered ring derivatives [C(Cp*)N(R)C(NR)E{W(CO)5 }2 ] (4: E=P, As; R=Cy, nBu) and the bicyclic complexes [[{C(Me)C- (CH2 )C(Me)C(Me)C(Me)}C(NR)2 - E{W(CO)5 }2 ] (5: E=As; R=Cy). The reaction pathway depends on the substituent at the isonitrile. By treatment of 1 a with two equivalents of CyNC only a 2H-1,3-azaphosphet complex 4 a-Cy (E=P; R=Cy) is formed. Treatment of 1 b with two equivalents of CyNC exclusively leads to the complex 5 b-Cy (E=As; R=Cy). Treatment of 1 a with two equivalents of nBuNC results in a mixture of complexes, the 2H-1,3-azaphosphet 4 a-nBu (E=P; R=nBu) and the bicyclic complex 5 a-nBu (E=P; R=nBu). For the arsenidene complex 1 b a mixture of the 2H-1,3-azarsete complex 4 b-nBu (E=As; R=nBu) and the bicyclic complex 5 b-nBu (E=P, As; R=Cy, nBu) is obtained. Complex 4 b-nBu is the first example of a 2H-1,3-azarsete complex. All products have been characterized by using mass spectrometry, NMR spectroscopy, and X-ray diffraction analysis.
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Affiliation(s)
- Michael Seidl
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg (Germany), Fax: (+49) 941-943-4439
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Stubenhofer M, Lassandro G, Balázs G, Timoshkin AY, Scheer M. Stepwise activation of “non-innocent” Cp* substituents – a Cp* based cascade reaction. Chem Commun (Camb) 2012; 48:7262-4. [DOI: 10.1039/c2cc32690f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Edwards PG, Kariuki BM, Limon M, Ooi L, Platts JA, Newman PD. Metal Complexes of a Structurally Embellished Phosphinane Ligand: An Assessment of Stereoelectronic Effects. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peter G. Edwards
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK, Fax: +44‐29‐208‐74030
| | - Benson M. Kariuki
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK, Fax: +44‐29‐208‐74030
| | - Matthieu Limon
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK, Fax: +44‐29‐208‐74030
| | - Li‐Ling Ooi
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK, Fax: +44‐29‐208‐74030
| | - James A. Platts
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK, Fax: +44‐29‐208‐74030
| | - Paul D. Newman
- School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK, Fax: +44‐29‐208‐74030
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