Recently we have reported several synthetic approaches to branched triangulanes (oligoepiroalkanes consisting only of three-membered rings). lI2 Unfortunately, most of these are rather complicated multistep syntheses. The most convenient approach is based on a methodology previously used in the synthesis of unbranched triangulane~, 39~ ie cycloaddition of (chloromethy1) carbene to an appropriate bicyclopropylidene, 6 ...
![7-cyclopropylidenedispiro[2.0.24.13]heptane结构式](https://image.chemsrc.com/caspic/023/60538-43-4.png)
