Tandem transformations of 10-substituted tetrahydrobenzo[b][1,6]naphthyridines resulted from the Michael addition of the nitrogen atom of the tetrahydropyridine fragment to the triple bond of activated alkynes
作者:L. G. Voskressensky、T. N. Borisova、I. V. Vorob’ev、N. M. Postika、E. A. Sorokina、A. V. Varlamov
DOI:10.1007/s11172-008-0200-y
日期:2008.7
A reaction of 10-R-substituted tetrahydrobenzo[b][1,6]naphthyridines (R = CN, CONH2, Me) with dimethyl acetylenedicarboxylate, methyl and ethyl propiolates, and acetylacetylene has been studied. It was found that 1-acryloyl-10-cyanotetrahydrobenzo[b][1,6]naphthyridines are the major products of the reaction of alkyl propiolates with 10-cyano-substituted naphthyridines, whereas the reaction with 10
已经研究了 10-R-取代的四氢苯并[b][1,6]萘啶(R = CN、CONH2、Me)与乙炔二甲酸二甲酯、丙炔酸甲酯和乙炔以及乙炔的反应。发现 1-丙烯酰基-10-氰基四氢苯并[b][1,6]萘啶是丙炔酸烷基酯与 10-氰基取代萘啶反应的主要产物,而与 10-氨基甲酰基-取代萘啶反应得到1-丙烯酰基取代的萘啶和六氢苯并[b]吡啶并[3,4,5-d,e][1,6]萘啶的混合物。后者是 10-氨基甲酰基取代的萘啶与乙炔反应的唯一产物。