Synthesis of push–pull chromophores by the sequential [2 + 2] cycloaddition of 1-azulenylbutadiynes with tetracyanoethylene and tetrathiafulvalene
作者:Taku Shoji、Shunji Ito、Tetsuo Okujima、Noboru Morita
DOI:10.1039/c2ob26028j
日期:——
been prepared by Cu-mediated cross- and homo-coupling reactions. The azulene-substituted butadiynes reacted with tetracyanoethylene in a formal [2 + 2] cycloaddition reaction to afford the corresponding 1,1,4,4-tetracyanobutadiene chromophores, in excellent yields. Further [2 + 2] cycloaddition with TTF and TCNE gave novel donor–acceptor chromophores and novel azulene-substituted 6,6-dicyanofulvene derivatives
已经通过Cu介导的交叉和均偶联反应制备了氮杂取代的丁二炔。氮杂取代的丁二炔与四氰基乙烯在正式的[2 + 2]环加成反应中,以极好的收率得到相应的1,1,4,4-四氰基丁二烯发色团。用TTF和TCNE进一步进行[2 + 2]环加成反应,得到了新颖的供体-受体生色团和新颖的氮杂烯取代的6,6-二氰基富烯衍生物。