Regioselective substitution of the 2-chloro group of 2,4-dichloroquinoline (I) with 1,2,3,4-tetrahydroisoquinoline (II) in refluxing toluene provides the 2-(tetrahydroisoquinolinyl)quinoline (III). Then, displacement of the remaining 4-chloro group by heating with ethanolamine (IV) furnishes the title compound