Synthesis and Structure-Property Relationships of 2,2′-Bis(benzo[<i>b</i>]phosphole) and 2,2′-Benzo[<i>b</i>]phosphole-Benzo[<i>b</i>]heterole Hybrid π Systems
作者:Yukiko Hayashi、Yoshihiro Matano、Kayo Suda、Yoshifumi Kimura、Yoshihide Nakao、Hiroshi Imahori
DOI:10.1002/chem.201203047
日期:2012.12.7
2′‐benzo[b]phosphole–benzo[b]heterole hybrid π systems is reported. 2‐Bromobenzo[b]phosphole P‐oxide underwent copper‐assisted homocoupling (Ullmann coupling) and palladium‐catalyzed cross‐coupling (Stille coupling) to give new classes of benzo[b]phosphole derivatives. The benzo[b]phosphole–benzo[b]thiophene and ‐indole derivatives were further converted to P,X‐bridged terphenylenes (X=S, N) by a palladium‐catalyzed
首次对2,2'-双(苯并[ b ]磷脂)和2,2'-苯并[ b ]磷脂-苯并[ b ]杂原子杂化π系统的合成及其结构与性质的关系进行了首次综合研究。2-溴-苯并[ b ]磷杂环P氧化物后行铜辅助自偶联(Ullmann偶联)和钯-催化的交叉偶联(Stille偶联),得到苯并新类[ b ]磷杂环衍生物。所述苯并[ b ]磷杂-苯并[ b ]噻吩和吲哚衍生物进一步通过用4-辛炔通过C钯催化氧化环加成反应而转化为P,X桥连terphenylenes(X = S,N)β H激活。对三种化合物的X射线分析表明,由于通过CC键间的有效共轭作用,苯并[ b ]磷脂-苯并[ b ]杂环衍生物具有共面π平面。双(苯并[ b ]磷脂)P-氧化物的顺式和反式异构体的π-π*跃迁能和氧化还原电位非常接近,表明它们的光学和电化学性质几乎不受相对立体化学的影响。两个磷原子。苯并[ b ]磷-苯并[ b ]杂杂化物的光学性质高度依赖于苯并[