Tetrahedron

The thermal isomerization and cleavage of cis-1, 1, 2, 2-tetrafluoro-3, 4-dimethylcyclobutane

WR Dolbier, DT Daly, H Koroniak

文献索引：Dolbier, William R.; Daly, Daniel T.; Koroniak, Henryk Tetrahedron, 1986 , vol. 42, # 14 p. 3763 - 3766

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被引用次数: 1

摘要

The reversible isomerization of cis-1, 1, 2, 2-tetrafluoro-3, 4-dimethylcyclobutane 5 to trans- 1, 1, 2, 2-tetrafluoro-3, 4-dimethylcyclobutane 6 at 435°-483° has been investigated:(Log A= 14.8±0.2, Ea= 61.1±0.5 solkcal mol). The irreversible cleavage of the cyclobutane ring leading to the formation of 1, 1-difluoropropene is competitive with the isomerization, occurring at a relative rate of 0.12 at 435° C.