A Novel and Effective Ni Complex Catalyst System for the Coupling Reactions of Carbon Dioxide and Epoxides.
✍ Scribed by Fuwei Li; Chungu Xia; Liwen Xu; Wei Sun; Gexin Chen
- Publisher
- John Wiley and Sons
- Year
- 2003
- Weight
- 83 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0931-7597
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## Abstract The heterobimetallic complexes [(η^5^‐C~5~H~5~)Ru(CO)(μ‐dppm)Mn(CO)~4~] and [(η^5^‐C~5~Me~5~)Ru(μ‐dppm)(μ‐CO)~2~Mn(CO)~3~] (dppm= bis‐diphenylphosphinomethane) have been prepared by reacting the hydridic complexes [(η^5^‐C~5~H~5~)Ru(dppm)H] and [(η^5^‐C~5~Me~5~)Ru(dppm)H], respectively,
Control experiments confirm the higher reactivity of 1 compared to the bis(phenylsu1fonyl)ethylenes. The reason may be attributed to the relief of strain at the dienophilic carbons upon change of hybridization from spz to sp3. 1.4-Benzodithiin S,S,S,S-tetraoxide, which is structurally related to I ,