Photochemical Formation of Indanylpyrrole Derivatives from 2,2′-(o-Phenylenedivinylene)dipyrrole
作者:Nikola Basarić、Slavica Tomšić、Željko Marinić、Marija Šindler-Kulyk
DOI:10.1016/s0040-4020(00)00062-4
日期:2000.3
Photochemically induced intra- and inter-molecular reaction of 2,2′-(1,2-phenylenedivinylene)dipyrrole (4a) led to a mixture of geometric isomers of 5-2-pyrrolyl[2-(2-pyrrolyl)-1-indanyl]methyl}-2,2′-(1,2-phenylenedivinylene)dipyrroles (8) in 40% yield. The compounds were isolated and characterized spectroscopically and by catalytic hydrogenation to 5-2-pyrrolyl[2-(2-pyrrolyl)-1-indanyl]methyl}-2
2,2'-(1,2-苯二亚乙烯基)二吡咯(4a)的光化学诱导的分子内和分子间反应导致了5- 2-吡咯基[2-(2-吡咯基)-1]的几何异构体的混合物-(茚满基]甲基} -2,2'-(1,2-苯二亚乙烯基)二吡咯(8),产率为40%。分离并通过光谱法和催化氢化将其表征为5- 2-吡咯基[2-(2-吡咯基)-1-茚满基]甲基} -2,2'-(1,2-苯二亚乙基)二吡咯(10) 。痕量的4,5-二氢-4-(2-吡咯基)苯并[5,6]环辛基[1,2- b ]吡咯(7)除8外,还被分离出来。在相同条件下N,N'-二甲基-2,2'-(1,2-苯二亚乙烯基)二吡咯(4b)仅经历顺式-反式异构化。