Steric effects on [4+4]-photocycloaddition reactions between complementary anthracene derivatives
作者:David Bailey、Nasim Seifi、Vance E. Williams
DOI:10.1016/j.dyepig.2010.05.016
日期:2011.6
peripheral functional groups on the [4+4]-photocycloaddition between substituted anthracene derivatives was examined. The reactivity of 2,3,6,7-tetraphenylanthracene (TPA) with 2-phenylanthracene (PA), 2,9,10-trimethylanthracene (TMA) and 9,10-dimethyl-2,3-diphenylanthracene (DMDPA) was investigated. In all cases, the photodimers were formed in high yield despite the steric bulk of the peripheral substituents
检查了外围官能团对取代的蒽衍生物之间的[4 + 4]-光环加成反应的空间效应。研究了2,3,6,7-四苯基蒽(TPA)与2-苯基蒽(PA),2,9,10-三甲基蒽(TMA)和9,10-二甲基-2,3-二苯基蒽(DMDPA)的反应性。在所有情况下,尽管周围取代基的空间体积很大,但仍以高收率形成了光二聚体。进一步表明,尽管PA能够形成其同二聚体,但当TPA在301 nm激发时,它会与TPA选择性反应。