Isomerizational recyclizat10n of pyridylethylated cyclanones. A new method for the synthesis of substituted polyhydroacridines and their analogs
Mixtures of cis and trans isomers of 1,2,3,4,9,10,9a,10a-octahydroacridines are formed in the recyclization of quaternary salts of pyridylethylated alicyclic ketones. The 1,2,3,4,9,10-hexahydro-1-acridone skeleton was obtained in the recyclization of the quaternary salt of pyridylethylated dimedone, whereas a noncyclic amino ketone was isolated from the products of recyclization of the quaternary salt of pyridylethylated camphor. The structures of the compounds obtained were confirmed by means of data from the IR, UV, and PMR spectra.