Synthese von 2- und 3-(1,2,3,6-Tetrahydropyridyl)-indolen

The synthesis of a series of 2- and 3-(1,2,3,6-tetrahydro-4-pyridyl)-indoles by reduction of the corresponding pyridinium compounds with sodium borohydride is described. A substantially improved mode of preparation for 3-(4-pyridyl)-indole is given.