Borisova Tatiana N, Voskressensky Leonid G, Soklakova Tatiana A, Kulikova Larisa N, Varlamov Alexey V
Organic Chemistry Department, Russian Peoples Friendship University, 6, Miklukho-Maklaya St., Moscow 117198, Russia.
Mol Divers. 2003;6(3-4):207-12. doi: 10.1023/b:modi.0000006760.30731.46.
Tetrahydropyrrolo[3,2-c]pyridines and tetrahydropyrido[4,3-b]indoles undergo piperidine ring opening under the action of dimethyl acetylene dicarboxylate in alcohols or in aqueous dioxane, providing beta-(alk)oxy-substituted pyrroles (indoles) in moderate to high yields.