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Reversible C-H bond activation reactions of the N-heterocyclic carbene ligands in Ru(Ph2PCH2CH2CH2PPh2)(IMes)(CO)H-2 and Ru(Ph2AsCH2CH2PPh2)(IMes)(CO)H-2 (IMes=1,3-dimesityl-1,3-dihydro-2H-imidazol-2-ylidene)


Reference:

Chilvers, M. J., Jazzar, R. F. R., Mahon, M. F. and Whittlesey, M. K., 2003. Reversible C-H bond activation reactions of the N-heterocyclic carbene ligands in Ru(Ph2PCH2CH2CH2PPh2)(IMes)(CO)H-2 and Ru(Ph2AsCH2CH2PPh2)(IMes)(CO)H-2 (IMes=1,3-dimesityl-1,3-dihydro-2H-imidazol-2-ylidene). Advanced Synthesis & Catalysis, 345 (9-10), pp. 1111-1114.

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Abstract

Thermolysis of Ru(IMes)(dppp)(CO)H-2 (1, IMes = 1,3-dimesityl-1,3-dihydro-2H-imidazol-2-ylidene; dppp = Ph2PCH2CH2CH2PPh2) in the presence of trimethylvinylsilane yields Ru(I-Mes')(dppp)(CO)H (2) resulting from intramolecular ArCH2 -H C-H bond activation of the N-heterocyclic carbene ligand. The structures of 1 and 2 have been established by X-ray crystallography. Treatment of Ru(IMes)(arphos)(CO)H2 (3, arphos=Ph2AsCH2CH2PPh2) with CH2=CHSiMe3 at 85degreesC produces a mixture of three C-H activated products 4a-c. The C-H activated complexes 2 and 4a-c reform their dihydride precursors upon heating under hydrogen.

Details

Item Type Articles
CreatorsChilvers, M. J., Jazzar, R. F. R., Mahon, M. F. and Whittlesey, M. K.
DOI10.1002/adsc.200303074
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code5046
Additional InformationID number: ISI:000185881500009

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