Reactions of σH-adducts of 1-ethyl-1,4-diazinium salts with arylalkynes as a one-step approach to pyrrolo[1,2-a]pyrazine derivatives
作者:E. V. Verbitskiy、P. A. Slepukhin、M. A. Ezhikova、M. I. Kodess、G. L. Rusinov、V. N. Charushin
DOI:10.1007/s11172-009-0169-1
日期:2009.6
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.