Abstract The cathodic cyclisation of N-(oxoalkyl) pyridinium salts, derived from 4- methylpyridine and cyclic ketones, afforded functionalised tricyclic indolizidine and quinolizidine derivatives in high yields. Through systematic variation of the ring size of the ketone and the cyclised ring, a series of four cyclopenta-/cyclohexa [a] indolizidines and- quinolizidines was obtained. The cyclisation was also applied to the synthesis of a ...
![1,4-dioxaspiro[4.5]dec-6-yl-methanol结构式](https://image.chemsrc.com/caspic/088/23153-80-2.png)