Efficient syntheses of a novel 5-thia-1-azacycl[3.3.2]azine ring system and 3H-1,4-diazacycl[3.3.2]azine derivatives
作者:Tetsuji Kawamoto、Kiminori Tomimatsu、Tomomi Ikemoto、Hidenori Abe、Kazumasa Hamamura、Muneo Takatani
DOI:10.1016/s0040-4039(00)00426-3
日期:2000.4
2]azine derivatives 1, 5-thia-1,8b-diazaacenaphthylenes, have successfully been prepared. An X-ray crystallographic analysis of 1c revealed that the 5-thia-1-azacycl[3.3.2]azine ring system adopts a planar structure as to the internal ring nitrogen atom. The 1H NMR spectrum for unsubstituted ring system 1d implies contribution of a paramagnetic ring current in the peripheral 12π-electron ring system
新的5-硫杂-1- azacycl [3.3.2]吖嗪衍生物1,5-硫杂1,8b-diazaacenaphthylenes,已成功制备。对1c的X射线晶体分析表明,5-硫杂-1-氮杂环[3.3.2]嗪环系统的内部环氮原子采用平面结构。未取代的环系统1d的1 H NMR谱图表明顺磁性环电流在外围的12π-电子环系统中的贡献。另外,3 H -1,4-二氮杂环[3.3.2]嗪衍生物,4-苄基-4,5-二氢-3 H -1,4,8b-三氮杂ena萘(e)-3-酮2和-3, 5二酮3分别经由3-(三氯乙酰基)咪唑并[以高效率合成1,2-α ]吡啶衍生物作为新的有用的合成中间体。