NEW MULTICOMPONENT METHOD FOR THE SYNTHESIS OF POLYHYDROGENATED PYRAZINO[1,2-<i>a</i>]QUINOLINES
DOI:
https://doi.org/10.1007/3182Keywords:
methyl (3-oxopiperazin-2-ylidene)acetate, 2-oxopiperazine, pyrazino[1, 2-a]quinoline, multicomponent reactionsAbstract
A new one-pot method for the synthesis of 2,3,4,6,7,8,9,10-octahydro-1H-pyrazino[1,2-a]quinolines was developed based on a three-component reaction between methyl (3-oxopiperazin-2-ylidene)acetate, aromatic aldehydes, and cyclohexane-1,3-diones. It was shown by HPLC-MS analysis that this cascade reaction involved a sequence of steps including condensation between 1,3-diketone and aldehyde, addition of heterocyclic enaminone as a С-nucleophile, and intramolecular heterocyclization.
Authors: Svetlana M. Medvedeva, Khidmet S. Shikhlaliev*,
Mikhail Yu. Krysin, Irina V. Gotsak