Synthesis of di- and triamino-1, 1′:3′, 1″-terphenyls from arylethylidene- and arylidenemalonodinitriles
作者:Piotr Milart、Jarosŀaw Wilamowski、Janusz J. Sepioŀ
DOI:10.1016/s0040-4020(98)00978-8
日期:1998.12
A three-step synthesis of several di- ortriamino-m-terphenyls19 – 23 from 3- or 4-nitrobenzylidene-malonodinitriles1 and 1-[3- or 4-nitro(or amino)phenyl]ethylidenemalonodinitriles2 is reported. Gewald's method was applied for a one-pot preparation from1 and2 of 5′-amino[1, 1′:3′, 1″-terphenyl]-4′, 6′-dicarbonitriles5 – 15 which bear the nitro or amino/nitro groups on the side rings of the terphenyl
的几个二ortriamino -间-三联苯的三步骤合成19 - 23从3-或4-硝基亚苄基- malonodinitriles 1和1- [3-或4-硝基(或氨基)苯基] ethylidenemalonodinitriles 2报道。Gewald方法用于从1和2的带有硝基或氨基的5'-氨基[1,1':3',1''-三联苯] -4',6'-二甲腈5-15制备一锅法联苯系统侧环上的/硝基。尝试通过在起始二腈1和2的苯基上选择性引入硝基或氨基官能团来优化三苯基5-15的收率。化合物5 - 13用锡和盐酸平稳地减少,得到5'-氨基- [1,1':3',1“ -三联苯] -4',6'-二腈14 - 18仅具有上侧的氨基基团苯环。将三联苯14 – 18脱氮,得到二氨基或三氨基-1,1':3',1'' -三联苯19 – 23。通过在压力容器(〜2.5 MPa)中于220°C下用乙醇钠氢氧化物溶液加热14–18达4小时来进行脱氰反应。图选项