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Halder B, Dewangan S, Barik T, Mishra A, Dhiman R, Chatterjee S. Solid supported synthesis of unsymmetrical bi-functionalized ferrocenyl-rhodaminyl molecular system to explore phosgene, heavy metal ion sensing, and cell imaging properties. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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St Onge B, Green JR. The formation of benzoxacin-3-ones via intramolecular Nicholas reactions and synthesis of 8-membered heliannuols. Org Biomol Chem 2021; 19:7152-7155. [PMID: 34373880 DOI: 10.1039/d1ob01395e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The γ-carbonyl cations generated from propargyl ether-Co2(CO)6 complexes undergo intramolecular Nicholas reactions to give dehydrobenzoxacin-3-one-Co2(CO)6 complexes in good yields. Reductive decomplexation and subsequent manipulation allows the synthesis of (±)-heliannuol K methyl ether and the formal syntheses of (±)-heliannuol K, (±)-heliannuol A, and (-)-heliannuol L.
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Affiliation(s)
- Brent St Onge
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON NB 3P4, Canada.
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Bioactive 1,1′-unsymmetrical bi-functional ferrocenyl compounds using a novel solvent free one pot multicomponent reaction method. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2019.121095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ghosh A, Barik T, Dewangan S, Majhi PK, Sasamori T, Mobin SM, Giri S, Chatterjee S. Selective functionalization of ferrocenyl compounds using a novel solvent free synthetic method for the preparation of bioactive unsymmetrical ferrocenyl derivatives. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Avishek Ghosh
- Department of ChemistryNational Institute of Technology Rourkela Rourkela 769008 India
| | - Tulasi Barik
- Department of ChemistryNational Institute of Technology Rourkela Rourkela 769008 India
| | - Smriti Dewangan
- Department of ChemistryNational Institute of Technology Rourkela Rourkela 769008 India
| | - Paresh Kumar Majhi
- Graduate School of Natural SciencesNagoya City University Nagoya Aichi 467‐8501 Japan
| | - Takahiro Sasamori
- Graduate School of Natural SciencesNagoya City University Nagoya Aichi 467‐8501 Japan
| | - Shaikh M. Mobin
- Schools of Basic ScienceIndian Institute of Technology Indore MP 452017 India
| | - Santanab Giri
- Theoretical Chemistry Laboratory, Department of ChemistryNational Institute of Technology Rourkela Rourkela 769008 India
| | - Saurav Chatterjee
- Department of ChemistryNational Institute of Technology Rourkela Rourkela 769008 India
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Harris M, Brusey SA, Moore A, Ortin Y, Müller-Bunz H, Manca G, Mealli C, McGlinchey MJ. [Co 2 (CO) 6 (Alkynyl)] Complexes of Dibenzosuberyl and Dibenzosuberenyl Carbocations: Dibenzotropylium or Dibenzoheptafulvene? Chempluschem 2016; 81:292-306. [PMID: 31968781 DOI: 10.1002/cplu.201500477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/26/2015] [Indexed: 11/09/2022]
Abstract
The reaction of dibenzo[a,d]cycloheptan-5-one (dibenzosuberone) and dibenzo[a,d]cyclohept-10-en-5-one (dibenzosuberenone) with aryl- or trimethylsilylacetylides led to the formation of the corresponding alkynyldibenzosuberols and alkynyldibenzosuberenols. Treatment with dicobalt octacarbonyl and then with bis(diphenylphosphino)methane (dppm) furnished the corresponding [Co2 (CO)4 (dppm)(alkynol)] clusters 25 and 29. Upon protonation with HBF4 at 203 K to generate the relevant cobalt-stabilised cations, the dibenzosuberyl system 30 exhibited fluxionality such that the cation migrated between cobalt centres. Variable-temperature 31 P NMR spectroscopy revealed a barrier of approximately 12.5 kcal mol-1 . In contrast, in the supposedly aromatic [Co2 (CO)4 (dppm)(dibenzosuberenyl)]+ cation (31), which would be expected to have less need of cobalt stabilisation, the barrier was too high to be measured experimentally, but is certainly in excess of 16 kcal mol-1 . These data were rationalised by DFT calculations on the structures and energies of the relevant ground states and transition states, which suggested that the nonplanar alkynyldibenzosuberenyl moiety in 31 is better regarded as a neutral dibenzoheptafulvene coordinated to a cationic alkynyl-dicobalt cluster. The question of the bonding of both aromatic and antiaromatic cations to alkyne-dicobalt clusters is considered, and it is proposed that their stabilities, when complexed, parallel the inversion of (4n+2) π and 4n π systems seen under photochemical conditions.
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Affiliation(s)
- Michelle Harris
- School of Chemistry, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Sarah A Brusey
- School of Chemistry, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Angela Moore
- School of Chemistry, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Yannick Ortin
- School of Chemistry, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Helge Müller-Bunz
- School of Chemistry, University College Dublin, Belfield, Dublin, 4, Ireland
| | - Gabriele Manca
- Istituto di Chimica dei Composti Organometallici, ICCOM-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Carlo Mealli
- Istituto di Chimica dei Composti Organometallici, ICCOM-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
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Ni R, Mitsuda N, Kashiwagi T, Igawa K, Tomooka K. Heteroatom-embedded Medium-Sized Cycloalkynes: Concise Synthesis, Structural Analysis, and Reactions. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409910] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Ni R, Mitsuda N, Kashiwagi T, Igawa K, Tomooka K. Heteroatom-embedded Medium-Sized Cycloalkynes: Concise Synthesis, Structural Analysis, and Reactions. Angew Chem Int Ed Engl 2014; 54:1190-4. [DOI: 10.1002/anie.201409910] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Indexed: 11/11/2022]
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Moore A, Ortin Y, Müller-Bunz H, McGlinchey MJ. Alkynyl-Dicobalt Hexacarbonyl Complexes of Menthyl Cations: Isolobal Substitution of [Co(CO)3]+ by Fe(CO)3 as a Structural Model. Organometallics 2010. [DOI: 10.1021/om100107x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Angela Moore
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Yannick Ortin
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helge Müller-Bunz
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Michael J. McGlinchey
- School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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Formation of multifunctional ligands by nucleophilic addition of alcohols and thiols to the alkyne groups in compound C5H5FeC5H4CCSCCH: Reactivity studies. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.10.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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