Journal
DALTON TRANSACTIONS
Volume 39, Issue 12, Pages 3035-3042Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b923924c
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [452, 460]
- Japan Society for the Promotion of Science (JSPS) [21.02310, 21245016]
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A new hybrid catalyst composed of a vitamin B-12 derivative and a hyperbranched polymer (HBP) was synthesized and characterized by UV-vis and ESR spectroscopy as well as AFM. The B-12-HBP showed good properties as a homogenous catalyst. The covalently-immobilized B-12 moieties were efficiently solvated and the cobalt centers were accessible for pyridine guests. The B-12-HBP showed high reactivity to 2-phenethylbromide and increased selectivity for reductive dimerization in the presence of TiO2 with UV light irradiation.
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