2-methyl-8-ethylquinoline (MEQUI) was synthesized from ethylene glycol
and an excess of 2-ethylaniline, operating in the vapour phase on K10
montmorillonite. Its structure was confirmed by H-1-NMR (200 MHz) spe
ctra recorded in CDCl3 and DMSO. The synthesis of MEQUI is favoured by
increasing the reaction temperature and amount of ethylene glycol, op
erating in a partial reducing atmosphere and feeding small amounts of
water inside the organic feed. A possible reaction pathway proposed wa
s confirmed by feeding a 2-ethylaniline/crotonaldehyde mixture.