Designing Tetrahydroimidazo[1,2-<i>a</i>]pyridine Derivatives via Catalyst-free Aza-Diels−Alder Reaction (ADAR) and Their Insecticidal Evaluation
作者:Wenwen Zhang、Yinbo Chen、Weidong Chen、Zewen Liu、Zhong Li
DOI:10.1021/jf100645y
日期:2010.5.26
A series of tetrahydroimidazo[1,2-a]pyridine derivatives were synthesized by the reaction of 2-vinyl-4,5-dihydroimidazole derivatives with substituted benzylidenemalononitrile via a catalyst-free aza-Diels-Alder reaction. Insecticidal activities of target compounds were tested against pea aphids (Aphis craccivora), which showed that activities were strongly influenced by the substituents and their positions. Especially, the introduction of a fluoro group at the 2- position increased activities.