New synthesis of benzo[b][1,6]naphthyridines and pyrido[4,3-b]benz[f]azepines from lactim ethers of 3,4-dihydrocarbostyril and 1H-2,3,4,5-tetrahydrobenz[b]azepin-2-one
作者:T. V. Golovko、O. B. Smirnova、N. P. Solov’eva、O. S. Anisimova、V. G. Granik
DOI:10.1007/s11172-007-0155-4
日期:2007.5
Condensation of lactim ethers of 3,4-dihydrocarbostyril and 1H-2,3,4,5-tetrahydrobenz[b]azepin-2-one with malonodinitrile, cyanoacetamide, and ethyl cyanoacetate gave the corresponding 2-methylidene derivatives. Their reactions with dimethylformamide diethyl acetal followed by cyclization into benzo[b][1,6]naphthyridines and pyrido[4,3-b]benz[f ]azepines were studied.
3,4-二氢羰基苯乙炔和1H-2,3,4,5-四氢苯并[b]氮杂卓-2-酮与丙二腈、氰乙酰胺和氰乙酸乙酯的缩合反应产生了相应的2-亚甲基衍生物。研究了它们与二甲基甲酰胺二乙基缩醛的反应,随后发生环化反应生成苯并[b][1,6]萘啶和吡啶并[4,3-b]苯并[f ]氮杂卓。