New heterocyclic systems derived from pyridine: new substrates for the investigation of the azide/tetrazole equilibrium
作者:Samvel N. Sirakanyan、Domenico Spinelli、Athina Geronikaki、Anush A. Hovakimyan、Azat S. Noravyan
DOI:10.1016/j.tet.2014.09.047
日期:2014.11
7-alkyl-1-azido-3-chloro-4-cyano-5,6,7,8-tetrahydro-2,7-naphthyridines 6 were synthesized. Looking at their chemical properties we have ascertained that in these compounds the azide/tetrazole equilibrium is completely shifted towards the azido form (both in solid state and in solution). Their behaviour with some amines was tested as well. Moreover by exploiting the reactivity of the chlorine and of the nitrile
通过利用7-烷基-3-氯-4-氰基-1-肼基5,6,7,8-四氢-2,7-萘啶5的反应性,一些7-烷基-1-叠氮基-3-氯-合成了4-氰基-5,6,7,8-四氢-2,7-萘啶6。观察它们的化学性质,我们已经确定,在这些化合物中,叠氮化物/四唑平衡完全朝着叠氮基形式转移(固态和溶液形式)。还测试了它们与某些胺的行为。此外,通过利用氯和腈基的反应性,我们在吡啶系统上稠合了两个新环(吡唑或噻吩),从而获得了以前未知的杂环系统(10和11)。有趣的是,在这些新系统中,上述均衡的位置被颠倒了。