High-Pressure Diels–Alder Reaction of Cyclooctatetraene with Dimethyl 1,4-Dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate. Single Crystalline State Valence Isomerization of a<i>syn</i>-Tricyclo[4.2.0.0<sup>2,5</sup>]octane Derivative
作者:Hitoshi Takeshita、Akira Mori、Nobuo Kato、Yoichi Kurahashi、Masahito Ito
DOI:10.1246/bcsj.68.2669
日期:1995.9
High-pressure Diels–Alder reaction of cyclooctatetraene with dimethyl 1,4-dimethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate afforded six products, one of which was shown to be a 2 : 2-adduct having a syn-tricyclo[4.2.0.02,5]octane framework. Upon radiation with X-rays, the tricyclooctane derivative isomerized to a cyclooctadiene derivative.