A New Convenient Synthesis of 1,2′-Biazulenes by Photolysis of 2-Diazo-1,3-dicyanoazulen-6(2<i>H</i>)-one with Azulene Derivatives
作者:Shih-Jue Lin、Shuan-Ya Jiang、Tian-Chyuan Huang、Cheng-Shyan Dai、Pai-Feng Tsai、Hitoshi Takeshita、Yun-Sha -Lin、(the late) Tetsuo Nozoe
DOI:10.1246/bcsj.70.3071
日期:1997.12
A photolysis of 2-diazo-1,3-dicyanoazulen-6(2H)-one in the presence of azulene derivatives in anhydrous ethyl acetate solution afforded 1,2′-biazulene derivatives, which are otherwise difficult to obtain, in good yields, nearly 90% or more. Accompanying by-products, 1,3-dicyanoazulen-6-ol and 2,5′-biazulene derivatives, were also characterized.
2-diazo-1,3-dicyanoazulen-6(2H)-one 在 azulene 衍生物存在下在无水乙酸乙酯溶液中的光解得到 1,2'-biazulene 衍生物,否则很难以良好的产率获得,近 90% 或更多。还表征了伴随的副产物 1,3-dicyanoazulen-6-ol 和 2,5'-biazulene 衍生物。