The laser heating of spiro [2. nlalkanes (n= 2-5) and of their 1, 1, 2, 2-tetradeuterated isotopomers reveals dissimilar modes of their thermal decomposition. Spiropentane decomposes into ethene and propadiene via two competing routes: the direct cleavage and the more important cleavage via intermediary methylenecyclobutane. Spirohexane decomposes through two important concurrent pathways which are the expulsions of ...
![spiro[2.3]hexane结构式](https://image.chemsrc.com/caspic/099/157-45-9.png)
![spiro[2.4]heptane结构式](https://image.chemsrc.com/caspic/388/185-49-9.png)
![spiro[2.5]octane结构式](https://image.chemsrc.com/caspic/126/185-65-9.png)
