SYNTHESES OF<i>SYN</i>- AND<i>ANTI</i>-[3.3](1,4)NAPHTHALENOPHANE AND INTRAMOLECULAR CYCLOADDITION PRODUCTS OF<i>SYN</i>- AND<i>ANTI</i>-[3.3](1,4)NAPHTHALENOPHANE DERIVATIVES
作者:Takeo Kawabata、Teruo Shinmyozu、Takahiko Inazu、Tamotsu Yoshino
DOI:10.1246/cl.1979.315
日期:1979.4.5
Two isomeric [3.3](1,4)naphthalenophanes, syn and anti (8 and 9), were synthesized. The absorption maxima 237 and 330 nm for 8, as well as 231, 241, and 325 nm for 9 may be ascribed to the transannular π-electronic interaction between two naphthalene moieties. On irradiation, syn- and anti-[3.3](1,4)naphthalenophane derivatives were transformed to the photoisomers (10 and 11) which were reconverted to the original compounds (2 and 3) when heated in the solid phase at 175°C.
合成了两种同分异构的 [3.3](1,4)萘烷(8 和 9)。8 的最大吸收波长为 237 纳米和 330 纳米,9 的最大吸收波长为 231 纳米、241 纳米和 325 纳米,这可能是由于两个萘分子之间发生了跨annular π 电子相互作用。在辐照下,合[3.3](1,4)萘烷衍生物和反[3.3](1,4)萘烷衍生物转化为光异构体(10 和 11),而这些光异构体在 175°C 固相加热后又重新转化为原始化合物(2 和 3)。