15 16 enaminonitriles 13b, 13c, and 18 were prepared in high yield by the reaction of 2- oxocyclohexanecarbonitrile with the corresponding amine. Lower yields of imidazoles were observed when enaminonitrile concentrations greater than M were used. Presumably this is due to the occurrence of bimolecular reactions in more concentrated solution. No imidazole products were detected on irradiation of the N, N-disubstituted enaminonitrile 18. The ...
![1,4-dioxa-spiro[4.4]non-6-ylamine Structure](https://image.chemsrc.com/caspic/205/57090-91-2.png)
