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 dimethylacetylenedicarboxylate, 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
Transformations of 10-Substituted Tetrahydrobenzo[b][1,6]naphthyridines through Interaction with Dehydrobenzene
作者:A. V. Varlamov、N. I. Guranova、A. V. Listratova、T. N. Borisova、V. N. Khrustalev、A. A. Titov、L. G. Voskressensky
DOI:10.1007/s10593-014-1470-y
日期:2014.5
The regioselectivity of dehydrobenzene reaction with 10-substituted benzo[b][1,6]naphthyridines was found to depend on electronic effects due to the C-10 substituent. Stevens rearrangement of 10-cyano-substituted naphthyridines produced 1-alkyl-2-phenyltetrahydrobenzonaphthyridines. 10-Carbamoyl-substituted naphthyridines underwent Hoffman cleavage of the tetrahydropyridine ring, giving 3-phenylally
发现由于C-10取代基,与10-取代的苯并[ b ] [1,6]萘吡啶的脱氢苯反应的区域选择性取决于电子效应。10-氰基取代的萘啶的史蒂文斯重排产生了1-烷基-2-苯基四氢苯并萘啶。10-氨基甲酰基取代的萘啶经四氢吡啶环的霍夫曼裂解,得到3-苯基烯丙基氨基甲基-2-乙烯基喹啉。