A system of experimental manipulation was established and employed in analysis, reaction monitor and purity assessby using thin film chromatography, thus making the scale of organic synthesis reduced to milligram leve...A system of experimental manipulation was established and employed in analysis, reaction monitor and purity assessby using thin film chromatography, thus making the scale of organic synthesis reduced to milligram level. The results werefound satisfactory as shown by being practiced by students.展开更多
Permethrin is one of the most important synthetic pyrethroids at the present time. Since it is highly effective, with low toxicity, and leaves almost no residue, it has obvious advantages over many other commonly used...Permethrin is one of the most important synthetic pyrethroids at the present time. Since it is highly effective, with low toxicity, and leaves almost no residue, it has obvious advantages over many other commonly used pesticides. The title Compound Ⅸ is an important intermediate in the synthesis of展开更多
文摘A system of experimental manipulation was established and employed in analysis, reaction monitor and purity assessby using thin film chromatography, thus making the scale of organic synthesis reduced to milligram level. The results werefound satisfactory as shown by being practiced by students.
文摘Permethrin is one of the most important synthetic pyrethroids at the present time. Since it is highly effective, with low toxicity, and leaves almost no residue, it has obvious advantages over many other commonly used pesticides. The title Compound Ⅸ is an important intermediate in the synthesis of
