Treatment of dodecatrienyne derivatives with [RhCl(CO)₂]₂ in refluxing toluene effected the cycloisomerization to produce tricyclo[6.4.0.0^2,6]dodecadienes. The one‐carbon shortened undecatrienyne derivatives, however, afforded bicyclo[6.3.0]undecatriene derivatives instead of tricyclic compounds, the latter of which are well known as a basic skeleton of naturally occurring octanoids. On the basis of two experiments with deuterated substrates, a plausible reaction mechanism for the construction of these products was proposed.

中文翻译：

---

铑（I）催化的烯丙基-烯烃-炔烃的闭环反应：线性碳链上三环[6.4.0.02,6]和双环[6.3.0]骨架的一步构建

在回流的甲苯中用[RhCl（CO）₂ ] ₂处理十二碳三烯炔衍生物，实现了环异构化，生成了三环[6.4.0.0 ^2,6 ]十二碳二烯。然而，一碳短的十一碳三烯炔衍生物可以提供双环[6.3.0]十一碳三烯衍生物，而不是三环化合物，后者是众所周知的天然辛烷类化合物的基本骨架。基于氘化底物的两个实验，提出了构建这些产物的合理反应机理。