and some of their dehydration derivatives were designed, synthesized and evaluated for their antifungal activities. Some compounds exhibited moderate inhibitory activities against seven plant pathogens at 50μg/mL in vitro, compounds 5g and 7c displayed nearly the same or higher fungicidalactivities against some certain plant pathogens compared with the lead compound pyrimorph. A qualitative structure-activity
Controlling chemoselective transformations of 4-acylpyridines via a Pd–C catalytic hydrodechlorination–hydrogenation
作者:Chuanjie Cheng、Bo Wang、Nan Liu、Wenwen Chen、Xinyan Wang、Yuefei Hu
DOI:10.1016/j.tet.2013.12.017
日期:2014.1
A novel Pd-C catalytic hydrodechlorination-hydrogenation was developed for a multi-step one-pot transformation of 4-acylpyridines. Under the selected conditions, 4-benzoylpyridines and 4-alkanoylpyridines were chemoselectively converted into the corresponding 4-benzylpiperidine hydrochlorides and alpha-alkyl-4-piperidinemethanol hydrochlorides, respectively. This catalytic method was performed simply by an addition of 1 equiv of CICH2CHCl2 to the conventional hydrogenation system and directly gave the crystalline piperidine hydrochlorides in practical quantitative yields. (C) 2013 Elsevier Ltd. All rights reserved.
Design, Synthesis and Antifungal/Insecticidal Evaluation of Novel Cinnamide Derivatives
Twenty novel cinnamamide derivatives were designed and synthesized using as lead compound pyrimorph, whose morpholine moiety was replaced by β-phenylethylamine. All the compounds were characterized by their spectroscopic data. The fungicidal and insecticidal activities were also evaluated. The preliminary results showed that all the title compounds had certain fungicidal activities against seven plant