Y. Nakadaira, Toshi-aki Kobayashi, H. Sakurai
May 1, 1986
Citations
0
Influential Citations
4
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
The reaction of 1,1-dimethyl-2,5-diphenyl-1-silacyclohexa-2,4-diene with iron pentacarbonyl or diironnonacarbonyl gave a mixture of tricarbonyl(1,1-dimethyl-2,5-diphenyl-1-silacyclohexa-2,4-diene)iron and tricarbonyl(1,1-dimethyl-3,6-diphenyl-1-silacyclohexa-2,4-diene)iron. Similarly, on treatment with iron pentacarbonyl 1,1-dimethyl-2,5-diphenyl-4-trimethylsilyl-1-silacyclohexa-2,5-diene yielded a mixture of tricarbonyl-(1,1-dimethyl-3,6-diphenyl-4-trimethylsilyl-1-silacyclohexa-2,4-diene)iron, tricarbonyl(1,1-dimethyl-2,5-diphenyl-4-trimethylsilyl-1-silacyclohexa-2,4-diene)iron, and tricarbonyl(1,1-dimethyl-2,5-diphenyl-6-trimethylsilyl-1-silacyclohexa-2,4-diene)iron as a result of migration of the hydrogen on the ligand competing with silyl migration. On thermolysis, 1,1-dimethyl-2,5-diphenyl-4-trimethylsilyl-1-silacyclohexa-2,5-diene underwent only 1,3-silyl-migration to yield 1,1-dimethyl-2,5-diphenyl-6-trimethylsilyl-1-silacyclohexa-2,4-diene. The mechanism of transition-metal assisted hydrogen-migr...