Design, Multicomponent Synthesis, and Bioactivities of Novel Neonicotinoid Analogues with 1,4-Dihydropyridine Scaffold
摘要:
Novel neonicotinoid analogues bearing a 1,4-dihydropridine scaffold were designed and synthesized by multicomponent reactions (MCRs) to enhance pi-pi stacking. The synthesized compounds were identified by H-1 NMR, C-13 NMR, high-resolution mass spectroscopy, and elemental analysis. Bioassay tests showed that some of them exhibited high insecticidal activities against pea aphid (Aphis craccivora).
Rapid and Efficient Uncatalyzed Knoevenagel Condensations from Binary Mixture of Ethanol and Water
作者:João Ferreira、João de Resende Filho、Poliane Batista、Ercules Teotonio、Juliana Vale
DOI:10.21577/0103-5053.20170240
日期:——
solvents, decreasing the toxicity of the reaction medium. Furthermore, other researchers have reported solventcatalyzed Knoevenagelcondensations, generally using ionicliquids or water (green solvents), under different conditions. In our studies, we noted that Knoevenagelcondensations were faster in ethanol than in other solvents (apolar or polar, protic or aprotic). Many papers have reported this reaction
Design, Multicomponent Synthesis, and Bioactivities of Novel Neonicotinoid Analogues with 1,4-Dihydropyridine Scaffold
作者:Wenwen Zhang、Xiaobao Yang、Weidong Chen、Xiaoyong Xu、Lu Li、Hongbin Zhai、Zhong Li
DOI:10.1021/jf902034z
日期:2010.3.10
Novel neonicotinoid analogues bearing a 1,4-dihydropridine scaffold were designed and synthesized by multicomponent reactions (MCRs) to enhance pi-pi stacking. The synthesized compounds were identified by H-1 NMR, C-13 NMR, high-resolution mass spectroscopy, and elemental analysis. Bioassay tests showed that some of them exhibited high insecticidal activities against pea aphid (Aphis craccivora).