R 30 Reactions of sigma(H)-adducts of 1-ethyl-1,4-diazinium salts with arylalkynes as a one-step approach to pyrrolo[1,2-a]pyrazine derivatives [Electronic resource] / E. V. Verbitskiy, P. A. Slepukhin, M. A. Ezhikova, M. I. Kodess, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2009. - Vol. 58, № 6. - P1291-1293 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The O- and C-adducts of 5-aryl and 5-hetaryl-2,3-dicyano-1-ethylpyrazinium salts are hidden sources of ylides, which can be used for the cyclization with arylacetylenes giving rise to pyrrolo[1,2-a]pyrazines \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 58 (6), 1291-1293.pdf |