Abstract
The conversion of 1-(3-chloropropyl)-cis-decahydroquinoline-2, 7-dione (3) into decahydro-3H, 8H-benzo [i, j] quinolizine-3, 8-diones (12a and 12b) was accomplished with retention of the parent stereochemistry. The stereochemistry of the tricyclic system was assigned from chemical and physical evidences. It was postulated that this successful ring closure in the cis ring system resulted from easy fulfilment of the stereoelectronic requirement, for intramolecular alkylation in 3, much reduced as compared to that for N-acrylyl-cis-octahydro-7 (1H)-quinolone (1b).
