2004 Fiscal Year Final Research Report Summary
Synthesis of novel transition metal dinuclear complex catalyst and application to organic synthesis
| Project/Area Number |
14550816
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Synthetic chemistry
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| Research Institution | Tohoku University |
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Principal Investigator |
INOUE Yoshio Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (50005518)
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| Co-Investigator(Kenkyū-buntansha) |
TSUKADA Naofumi Tohoku University, Graduate School of Engineering, Assistant Professor, 大学院・工学研究科, 助手 (70292240)
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| Project Period (FY) |
2002 – 2004
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| Keywords | Dinuclear Complex / Palladium / Platinum / Rhodium / C-H Activation / Hydroarylation / Alkyne / Aromatic Ring |
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| Research Abstract |
We have exploited a novel tetradentate ligand (Hdpfam) containing nitrogen and phosphorus donor atoms. Several dinuclear complexes (M_2Ar_2(η-X)(η-dpfam), M=Pd, Pt, Rh) can be synthesized using this ligand. Development of catalytic reactions utilizing the dinuclear complexes mediated only by dinuclear system has been studied and the following results are obtained.
1.Hydrosilylation of alkynes catalyzed by dinuclear platinum complex
Dinuclear platinum hydride complex Pt_2Tbl_2(η-H)(η-dpfam)) obtained by treatment of the chloride bridged platinum dinuclear complex with sodium borohydride was found to be a good catalyst for the hydrosilylation of alkynes.
2.Activation of C-H bond of aromatic compounds by dinuclear palladium complexes
Dinuclear palladium complexes were found active far hydroarylation of alkynes activating the C-H bond of an aromatic ring which was usually regarded inert. Elucidation of the reaction mechanism uncovered that the reaction proceeds with direct C-H bond activation by palladium center.
3.Activation of C-H bond of alkenes
Dinuclear palladium complexes were found active for hydroalkenylation of alkynes activating the C-H bond of an alkene double bond which was usually regarded inert.
4.Suzuki-Miyaura reaction catalyzed by dinuclear palladium complex
Dinuclear palladium complexes catalyzed the Suzuki-miyaura reaction in benzene solvent to give a cine product together with the normal one.
5.Double carbonylation catalyzed by dinuclear palladium complex
Dinuclear palladium complex was found to be an active catalyst for the double carbonylation of iodobenzene with diethylamine.
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