ISSN:
1573-9171
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Conclusions 1. In the presence of (η2-methylenecyclopropane)bis(triphenylphosphine)nickel (Kt-1), methylcyclopropane (MCP) undergoes dimerization, trirmerization, and oligomerization, the formation, of trimers being predominant. In catalytic conversions of MCP under the influence of Kt-1, we have found for the first time in the composition of the dimers 2-methyl-4-methylene-1,5-hexadiene. It has been established that this dimer is also formed in the case of the catalytic system Ni(COD)2-PPh3. 2. Dimers and trimers of MCP that are formed, containing diene fragments, are the principal predecessors of higher oligomers. Conditions have been found for reducing the yield of oligomers from 45–56% to 4–6%, thus increasing the selectivity of the process in the direction of monoolefins and triolefins with cyclopropyl substituents,
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00956646
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