Reaction of lithioalkoxyallenes with isothio-cyanates: Synthesis of pyrroles and 5,6-dihydropyridines

We have found a novel synthesis route for 2,3-disubstituted pyrroles and 5,6-dihydropyridines, starting from lithiated alkoxyallenes, and organic isothiocyanates.Irkutsk Institute of Organic Chemistry, Siberian Branch, Russian Academy of Sciences, Irkutsk 664033. Preparative Organic Chemistry Group, Utrecht University, The Netherlands. Translated from Khimya Geterotsiklicheskikh Soedinenii, Vol. 32, No. 7, pp. 917–918, July, 1996. Original article submitted April 17, 1996.