The highly stable 1,6-methanotetradehydro-[26]-, -[28]-, -[30]-, -[32]-, -[34]-, and -[38]-annulenes. Limiting ring size for dia- and para-tropicity
作者:J?ro Ojima、Satoshi Fujita、Masayuki Masumoto、Emiko Ejiri、Tadahito Kato、Shigeyasu Kuroda、Yoshihiko Nozawa、Hitoshi Tatemitsu
DOI:10.1039/c39870000534
日期:——
The title annulenes have been synthesized and their 1H n.m.r. spectra indicate that the [28]- and [34]-annulenes as well as the lower-membered ones can sustain a ring current.
标题环已合成,其1 H nmr光谱表明[28]-和[34]-环以及低级环可以维持环电流。