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Estrada AL, Wititsuwannakul T, Kromm K, Hampel F, Hall MB, Gladysz J. Syntheses, Rearrangements, and Structural Analyses of Unsaturated Nitrogen Donor Ligands Derived from Diphenyldiazomethane and the Chiral Rhenium Lewis Acid [(η5-C5H5)Re(NO)(PPh3)]+. Dalton Trans 2022; 51:7305-7320. [DOI: 10.1039/d2dt00890d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diphenyldiazomethane and a labile chlorobenzene complex of [(η5-C5H5)Re(NO)(PPh3)]+ BF4– react to give the η1 adduct [(η5-C5H5)Re(NO)(PPh3)(NNCPh2)]+ BF4– (73%). When this is con-ducted in the presence of copper powder, a 3-phenyl-1H-indazole...
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Ananikov VP, Ledovskaya MS, Voronin VV, Rodygin KS. Acetylene and Ethylene: Universal C2 Molecular Units in Cycloaddition Reactions. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1654-2318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractAcetylene and ethylene are the smallest molecules that contain an unsaturated carbon–carbon bond and can be efficiently utilized in a large variety of cycloaddition reactions. In this review, we summarize the application of these C2 molecular units in cycloaddition chemistry and highlight their amazing synthetic opportunities.1 Introduction2 Fundamental Features and Differences of Cycloaddition Reactions Involving Acetylene and Ethylene3 (2+1) Cycloaddition4 [2+2] Cycloaddition5 (3+2) Cycloaddition6 [4+2] Cycloaddition7 (2+2+1) Cycloaddition8 [2+2+2] Cycloaddition9 The Use of Acetylene and Ethylene Cycloaddition for Deuterium and 13C Labeling10 Conclusions
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Affiliation(s)
- Valentine P. Ananikov
- Institute of Chemistry, Saint Petersburg State University
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences
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Efremova IE, Serebryannikova AV, Lapshina LV, Savelev II. Some Peculiarities of Oxidation of 1-Carbamoyl-Substituted Hexahydro-1H-thieno[3,2-c]pyrazole-4,4-dioxides. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363220120324] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Albertin G, Antoniutti S, Bortoluzzi M, Castro J. Preparation and crystal structure of the boranehydrazine complex [RuCl(κ1-NH2NH2BPh3){P(OEt)3}4]BPh4. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Albertin G, Antoniutti S, Castro J. Preparation and Reactivity of Mixed-Ligands Hydride Complexes [RuHCl(CO)(PPh 3
) 2
{P(O R
) 3
}]. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi DSMN; Università Ca' Foscari Venezia, Campus Scientifico; Via Torino 155 30172 Venezia Mestre Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi DSMN; Università Ca' Foscari Venezia, Campus Scientifico; Via Torino 155 30172 Venezia Mestre Italy
| | - Jesús Castro
- Departamento de Química Inorgánica; Facultade de Química; Universidade de Vigo; Edificio de Ciencias Experimentais 36310 Vigo Galicia Spain
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Albertin G, Antoniutti S, Castro J, Sibilla F. Pentamethylcyclopentadienyl osmium complexes that contain diazoalkane, dioxygen and allenylidene ligands: preparation and reactivity. Dalton Trans 2019; 48:3116-3131. [PMID: 30768111 DOI: 10.1039/c9dt00223e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Diazoalkane complexes [Os(η5-C5Me5)(N2CAr1Ar2)(PPh3){P(OR)3}]BPh4 (1, 2) [R = Me (1), Et (2); Ar1 = Ar2 = Ph (a); Ar1 = Ph, Ar2 = p-tolyl (b); Ar1Ar2 = C12H8 (fluorenyl) (c)] were prepared by reacting bromo-compounds OsBr(η5-C5Me5)(PPh3){P(OR)3} with an excess of diazoalkane in ethanol. The treatment of diazoalkane complexes 1 and 2 with acetylene under mild conditions (1 atm, RT) led to dipolar (3 + 2) cycloaddition affording 3H-pyrazole derivatives [Os(η5-C5Me5)(η1-[upper bond 1 start]N[double bond, length as m-dash]NC(C12H8)CH[double bond, length as m-dash]C[upper bond 1 end]H)(PPh3){P(OR)3}]BPh4 (6, 7) [R = Me (6), Et (7)] whereas reactions with terminal alkynes R1C[triple bond, length as m-dash]CH (R1 = Ph, p-tolyl, COOMe) gave vinylidene derivatives [Os(η5-C5Me5){[double bond, length as m-dash]C[double bond, length as m-dash]C(H)R1}(PPh3){P(OR)3}]BPh4 (8b-d, 9b-d) [R = Me (8), Et (9); R1 = Ph (b), p-tolyl (c), COOMe (d)]. Exposure to air of dichloromethane solutions of complexes 1 and 2 produced dioxygen derivatives [Os(η5-C5Me5)(η2-O2)(PPh3){P(OR)3}]BPh4 (10, 11) [R = Me (10), Et (11)]. Allenylidene [Os][double bond, length as m-dash]C[double bond, length as m-dash]C[double bond, length as m-dash]CR1R2 (12-14) [R1 = R2 = Ph (12, 13); R1 = Ph, R2 = Me (14)], vinylvinylidene [Os][double bond, length as m-dash]C[double bond, length as m-dash]C(H)C(Ph)[double bond, length as m-dash]CH2 (15) and 3-hydroxyvinylidene [Os][double bond, length as m-dash]C[double bond, length as m-dash]C(H)C(H)R2(OH) (16, 17) [R2 = Ph (16), H (17)] derivatives were also prepared. The vinylidene complex [Os(η5-C5Me5)([double bond, length as m-dash]C[double bond, length as m-dash]CH2)(PPh3){P(OMe)3}]BPh4 (8a) reacted with PPh3 to afford the alkenylphosphonium derivative [Os(η5-C5Me5){η1-C(H)[double bond, length as m-dash]C(H)PPh3}(PPh3){P(OMe)3}]BPh4 (18) whereas vinylidene complexes 8 and 9 reacted with water leading to the hydrolysis of the alkyne and the formation of carbonyl complexes [Os(η5-C5Me5)(CO)(PPh3){P(OR)3}]BPh4 (19, 20). The complexes were characterised by spectroscopic data (IR and NMR) and by X-ray crystal structure determination of [Os(η5-C5Me5){[double bond, length as m-dash]C[double bond, length as m-dash]C(H)p-tolyl}(PPh3){P(OEt)3}]BPh4 (9c), [Os(η5-C5Me5)(η2-O2)(PPh3){P(OMe)3}]BPh4 (10) and [Os(η5-C5Me5)(CO)(PPh3){P(OMe)3}]BPh4 (19).
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy.
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Albertin G, Antoniutti S, Castro J. Preparation of Diethylcyanamide and Cyanoguanidine Complexes of Iridium. ChemistrySelect 2018. [DOI: 10.1002/slct.201802319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca‘ Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca‘ Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
| | - Jesús Castro
- Departamento de Química Inorgánica; Universidade de Vigo, Facultade de Química, Edificio de Ciencias Experimentais; 36310 Vigo (Galicia) Spain
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Albertin G, Antoniutti S, Castro J, Ganz V, Sibilla F. Preparation and reactivity of half-sandwich organic azide complexes of osmium. Dalton Trans 2018; 47:11658-11668. [PMID: 30095833 DOI: 10.1039/c8dt02230e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Organic azide complexes [Os(η5-C5H5)(κ1-N3R)(PPh3){P(OR1)3}]BPh4 (1, 2) [R = CH2C6H5 (a), CH2C6H4-4-CH3 (b), CH(CH3)C6H5 (c), C6H5 (d); R1 = Me (1), Et (2)] were prepared by allowing bromo-compounds [OsBr(η5-C5H5)(PPh3){P(OR1)3}] to react first with AgOTf and then with an excess of azide in toluene. Benzylazide complexes reacted in solution leading to imine derivatives [Os(η5-C5H5){κ1-NH[double bond, length as m-dash]C(R2)Ar}(PPh3){P(OR1)3}]BPh4 (3, 4) [R2 = H (a, b), CH3 (c); Ar = C6H5, C6H4-4-CH3; R1 = Me (3), Et (4)]. Phenylazide, on the other hand, reacted in solution affording the dinuclear dinitrogen complex [{Os(η5-C5H5)(PPh3)[P(OMe)3]}2(μ-N2)](BPh4)2 (5). Depending on the nature of the R substituent, the reaction of the p-cymene complex [OsCl2(η6-p-cymene)(PPh3){P(OEt)3}] with RN3 yielded imine [OsCl(η6-p-cymene){κ1-NH[double bond, length as m-dash]C(H)Ar}{P(OEt)3}]BPh4 (6) (Ar = C6H4-4-CH3) and amine derivatives [OsCl(η6-p-cymene)(κ1-NH2C6H5){P(OEt)3}]BPh4 (7). The complexes were characterised spectroscopically (IR, 1H, 31P, 15N NMR) and by the X-ray crystal structure determination of [{Os(η5-C5H5)(PPh3)[P(OMe)3]}2(μ-N2)](BPh4)2 (5).
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Via Torino 155, 30172 Venezia Mestre, Italy.
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Albertin G, Antoniutti S, Bortoluzzi M, Castro J, Ferraro V. Preparation and reactivity of half-sandwich dioxygen complexes of ruthenium. Dalton Trans 2018; 47:9173-9184. [DOI: 10.1039/c8dt01871e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The preparation of dioxygen complexes [Ru(η5-C5Me5)(η2-O2){P(OR)3}L]BPh4 and their intramolecular oxygen transfer reaction in the presence of acid affording bis(phosphate) derivatives are described.
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Venezia Mestre
- Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Venezia Mestre
- Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Venezia Mestre
- Italy
| | - Jesús Castro
- Departamento de Química Inorgánica
- Universidade de Vigo
- Facultade de Química
- 36310 Vigo
- Spain
| | - Valentina Ferraro
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30172 Venezia Mestre
- Italy
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Albertin G, Antoniutti S, Bortoluzzi M, Castro J, Trevisan M. Ruthenium(II) pentamethylcyclopentadienyl half-sandwich carbene complexes with polypyridyl ligands. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.07.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Bai W, Lee KH, Chen J, Sung HHY, Williams ID, Lin Z, Jia G. Reactions of (Cyclopentadienylidenehydrazono)triphenylphosphorane with Chlororuthenium(II) Complexes and Substituent Effect on the Thermodynamic Trend in the Migratory-Insertion Reactions of Chlororuthenium–Alkylidene Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Bai
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Ka-Ho Lee
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Jiangxi Chen
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Herman H. Y. Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Ian D. Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Guochen Jia
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
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Albertin G, Antoniutti S, Castro J, Sibilla F. Preparation of Azine Complexes of Ruthenium(II). ChemistrySelect 2016. [DOI: 10.1002/slct.201601559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca' Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca' Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
| | - Jesús Castro
- Departamento de Química Inorgánica; Universidade de Vigo, Facultade de Química; Edificio de Ciencias Experimentais; 36310 Vigo (Galicia) Spain
| | - Francesca Sibilla
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca' Foscari Venezia; Via Torino 155 30172 Mestre Venezia Italy
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Reactivity with alkene and alkyne of pentamethylcyclopentadienyl half-sandwich diazoalkane complexes of ruthenium. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.07.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Albertin G, Antoniutti S, Bortoluzzi M, Botter A, Castro J. Pentamethylcyclopentadienyl Half-Sandwich Diazoalkane Complexes of Ruthenium: Preparation and Reactivity. Inorg Chem 2016; 55:5592-602. [PMID: 27187280 DOI: 10.1021/acs.inorgchem.6b00671] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The diazoalkane complexes [Ru(η(5)-C5Me5)(N2CAr1Ar2){P(OR)3}L]BPh4 (1-4) [R = Me, L = P(OMe)3 (1); R = Et, L = P(OEt)3 (2); R = Me, L = PPh3 (3); R = Et, L = PPh3 (4); Ar1 = Ar2 = Ph (a); Ar1 = Ph, Ar2 = p-tolyl (b); Ar1Ar2 = C12H8 (c); Ar1 = Ph, Ar2 = PhC(O) (d)] and [Ru(η(5)-C5Me5){N2C(C12H8)}{PPh(OEt)2}(PPh3)]BPh4 (5c) were prepared by allowing chloro-compounds RuCl(η(5)-C5Me5)[P(OR)3]L to react with the diazoalkane Ar1Ar2CN2 in the presence of NaBPh4. Treatment of complexes 1-4 with H2O afforded 1,2-diazene derivatives [Ru(η(5)-C5Me5)(η(2)-NH═NH){P(OR)3}L]BPh4 (6-9) and ketone Ar1Ar2CO. A reaction path involving nucleophilic attack by H2O on the coordinated diazoalkane is proposed and supported by density functional theory calculations. The complexes were characterized spectroscopically (IR and (1)H, (31)P, (13)C, (15)N NMR) and by X-ray crystal structure determination of [Ru(η(5)-C5Me5)(N2CC12H8){P(OEt)3}2]BPh4 (2c) and [Ru(η(5)-C5Me5)(η(2)-NH═NH){P(OEt)3}2]BPh4 (7).
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia , Via Torino 155, 30172 Mestre Venezia, Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia , Via Torino 155, 30172 Mestre Venezia, Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia , Via Torino 155, 30172 Mestre Venezia, Italy
| | - Alessandra Botter
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia , Via Torino 155, 30172 Mestre Venezia, Italy
| | - Jesús Castro
- Departamento de Química Inorgánica, Facultade de Química, Edificio de Ciencias Experimentais, Universidade de Vigo , 36310 Vigo (Galicia), Spain
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Albertin G, Antoniutti S, Bortoluzzi M, Botter A, Castro J, Sibilla F. Preparation of diazoalkane complexes of iron(ii). RSC Adv 2016. [DOI: 10.1039/c6ra22051g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The preparation of diazoalkane complexes of iron(ii) and their reactivity toward acrylonitrile are described.
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Alessandra Botter
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari Venezia
- 30172 Mestre Venezia
- Italy
| | - Jesús Castro
- Departamento de Química Inorgánica
- Universidade de Vigo
- Facultade de Química
- Edificio de Ciencias Experimentais
- 36310 Vigo (Galicia)
| | - Francesca Sibilla
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca' Foscari Venezia
- 30172 Mestre Venezia
- Italy
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Albertin G, Antoniutti S, Forcolin M, Gasparato D. Preparation of half-sandwich diazoalkane complexes of osmium. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Albertin G, Antoniutti S, Bortoluzzi M, Castro J, Marzaro L. Diazoalkane complexes of ruthenium with tris(pyrazolyl)borate and bis(pyrazolyl)acetate ligands. Dalton Trans 2015; 44:15470-80. [PMID: 26237267 DOI: 10.1039/c5dt02113h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Diazoalkane complexes [Ru(Tp)(N2CAr1Ar2)(PPh3)L]BPh4 ( and ) [Tp = tris(pyrazolyl)borate; L = P(OMe)3, P(OEt)3; Ar1 = Ar2 = Ph; Ar1 = Ph, Ar2 = p-tolyl; Ar1Ar2 = C12H8] were prepared by allowing chloro-compounds RuCl(Tp)(PPh3)L to react with diazoalkane in the presence of NaBPh4. Acrylonitrile CH2[double bond, length as m-dash]C(H)CN reacts with diazoalkane complexes to give 3H-pyrazole derivatives [Ru(Tp){N[double bond, length as m-dash]NC(Ar1Ar2)CH(CN)CH2}(PPh3){P(OMe)3}]BPh4 and [Ru(Tp){N[double bond, length as m-dash]NC(Ar1Ar2)CH2C(H)CN}(PPh3){P(OMe)3}]BPh4 (). Diazoalkane complexes [Ru(bpza)(N2CAr1Ar2)(PPh3)2]BPh4 () [bpza = bis(pyrazolyl)acetate] were also prepared. All complexes were characterised by IR and NMR spectroscopy and X-ray crystal structure determination of [Ru(Tp){N2C(Ph)(p-tolyl)}(PPh3){P(OMe)3}]BPh4 (). The differences exhibited by [Ru(Tp){N2C(Ph)(p-tolyl)}(PPh3){P(OMe)3}](+) and [Ru(Cp){N2C(Ph)(p-tolyl)}(PPh3){P(OMe)3}](+), as regards coordination of the diazoalkane ligand and reactivity towards alkenes, were explained on the basis of a comparative DFT study.
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Dorsoduro 2137, 30123 Venezia, Italy.
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Albertin G, Antoniutti S, Castro J, Dottorello G. Preparation and reactivity of diazoalkane complexes of ruthenium stabilised by an indenyl ligand. Dalton Trans 2015; 44:9289-303. [PMID: 25913868 DOI: 10.1039/c5dt00755k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Diazoalkane complexes [Ru(η(5)-C9H7)(N2CAr1Ar2)(PPh3)L]BPh4 (1-3) [L = PPh3, P(OMe)3, P(OEt)3; Ar1 = Ar2 = Ph; Ar1 = Ph, Ar2 = p-tolyl; Ar1Ar2 = C12H8 fluorenyl] were prepared by allowing chloro-complexes [RuCl(η(5)-C9H7)(PPh3)L] to react with an excess of diazoalkane in ethanol. Complexes 1-3 reacted with ethylene CH2=CH2 (1 atm) and maleic anhydride [ma, CH=CHCO(O)CO] to afford η(2)-alkene complexes [Ru(η(5)-C9H7)(η(2)-CH2=CH2)(PPh3)L]BPh4 (4, 5) and [Ru(η(5)-C9H7){η(2)-CH=CHCO(O)CO}(PPh3)L]BPh4 (7). Further, complexes 1-3 underwent cycloaddition with acrylonitrile CH2=C(H)CN, giving 1H-pyrazoline derivatives [Ru(η(5)-C9H7){η(1)-N=C(CN)CH2C(Ar1Ar2)NH}(PPh3)L]BPh4 (6). Treatment of diazoalkane complexes 1-3 with acetylene CH[triple bond, length as m-dash]CH under mild conditions (1 atm, room temperature) led to dipolar cycloaddition, affording 3H-pyrazole complexes [Ru(η(5)-C9H7)-{η(1)-N=NC(Ar1Ar2)CH=CH}(PPh3)L]BPh4 (8), whereas reaction with terminal alkynes RC≡CH (R = Ph, p-tolyl, Bu(t)) gave vinylidene derivatives [Ru(η(5)-C9H7){=C=C(H)R}(PPh3)L]BPh4 (9). The latter reacted with nucleophiles such as amines and alcohols to give amino- and alkoxy-carbene derivatives [Ru(η(5)-C9H7){=C(NHPr(n))(CH2Ph)}(PPh3)L]BPh4 (11) and [Ru(η(5)-C9H7){=C(CH3)(OEt)}(PPh3)L]BPh4 (10), respectively. In addition, complexes 9 reacted with phenylhydrazine to afford nitrile derivatives [Ru(η(5)-C9H7)(N[triple bond, length as m-dash]CCH2R)(PPh3)L]BPh4 (12) and phenylamine, whereas the reaction with water led to hydrolysis of the alkyne and formation of carbonyl complexes [Ru(η(5)-C9H7)(CO)(PPh3)L]BPh4 (13). Lastly, treatment of vinylidene complexes with the phosphines PPh3 and P(OMe)3 afforded alkenylphosphonium derivatives [Ru(η(5)-C9H7){C(H)=C(R)PPh3}(PPh3)L]BPh4 (14) and [Ru(η(5)-C9H7){C(R)=C(H)P(OMe)3}(PPh3)L]BPh4 (15), respectively. Compound [Ru(η(5)-C9H7){C(H)=C(H)PPh3}(PPh3)L]BPh4 (16) was also prepared. The complexes were characterised by spectroscopy (IR and NMR) and X-ray crystal structure determinations of [Ru(η(5)-C9H7){N2C(C12H8)}(PPh3){P(OEt)3}]BPh4 (3c), [Ru(η(5)-C9H7){=C=C(H)Ph}(PPh3){P(OEt)3}]BPh4 (9d) and [Ru(η(5)-C9H7){C(H)=C(Ph)PPh3}(PPh3){P(OEt)3}]BPh4 (14d).
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, Dorsoduro 2137, 30123 Venezia, Italy.
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Albertin G, Antoniutti S, Botter A, Castro J. Hydrolysis of coordinated diazoalkanes to yield side-on 1,2-diazene derivatives. Inorg Chem 2015; 54:2091-3. [PMID: 25695769 DOI: 10.1021/ic502963n] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diazoalkane complexes [Ru(η(5)-C5Me5)(N2CAr1Ar2)(PPh3){P(OR)3}]BPh4 [R = Me (1), Et (2); Ar1 = Ar2 = Ph (a); Ar1 = Ph, Ar2 = p-tolyl (b); Ar1Ar2 = C12H8 (c)] were prepared by allowing chloro complexes RuCl(η(5)-C5Me5)(PPh3)[P(OR)3] to react with diazoalkane Ar1Ar2CN2 in ethanol. The treatment of compounds 1 and 2 with H2O afforded 1,2-diazene derivatives [Ru(η(5)-C5Me5)(η(2)-NH═NH)(PPh3){P(OR)3}]BPh4 (3 and 4) and ketone Ar1Ar2CO. A reaction path involving nucleophilic attack by H2O on the coordinated diazoalkane is proposed. The complexes were characterized spectroscopically (IR and NMR) and by X-ray crystal structure determination of [Ru(η(5)-C5Me5)(η(2)-NH═NH)(PPh3){P(OMe)3}]BPh4 (3).
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia , Dorsoduro 2137, 30123 Venezia, Italy
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Albertin G, Antoniutti S, Bortoluzzi M, Botter A, Castro J. Reactivity of vinylidene complexes of ruthenium with hydrazines and hydroxylamines. Dalton Trans 2015; 44:3439-46. [DOI: 10.1039/c4dt03464c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Reaction of vinylidene complexes of Ru with hydrazines and hydroxylamines affords nitrile derivatives and amine or water. A reaction path based on 15N NMR studies and DFT calculations is proposed.
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Alessandra Botter
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Jesús Castro
- Departamento de Química Inorgánica
- Universidade de Vigo
- Facultade de Química
- Edificio de Ciencias Experimentais
- 36310 Vigo
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Albertin G, Antoniutti S, Bortoluzzi M, Botter A, Castro J. Preparation of pyranylidene complexes of ruthenium. Dalton Trans 2015; 44:7411-8. [DOI: 10.1039/c5dt00418g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Dimerization of alkylpropiolate on the half-sandwich fragment [Ru(η5-C5H5)(PPh3){P(OMe)3}]+ affords pyranylidene derivatives.
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Affiliation(s)
- Gabriele Albertin
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Stefano Antoniutti
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Alessandra Botter
- Dipartimento di Scienze Molecolari e Nanosistemi
- Università Ca’ Foscari Venezia
- 30123 Venezia
- Italy
| | - Jesús Castro
- Departamento de Química Inorgánica
- Universidade de Vigo
- Facultade de Química
- Edificio de Ciencias Experimentais
- 36310 Vigo
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