catalytic amount meaning in English
催化剂量
Examples
- A variety of aldehydes were converted into acylals in good yields with anhydride in the presence of a catalytic amount of zinc bromide under solvent - free conditions
以醛和酸酐为原料，溴化锌为催化剂，无溶剂条件下高产率地合成了偕二酸酯（其中醛与苯甲酸酐的反应是首次报道） 。 - A variety of aldehydes were converted into acylals in good yields with anhydride in the presence of a catalytic amount of zinc bromide under solvent - free conditions
摘要以醛和酸酐为原料，溴化锌为催化剂，无溶剂条件下高产率地合成了偕二酸酯（其中醛与苯甲酸酐的反应是首次报道） 。 - Abstract : aim to synthesize a new prodrug , resveratrol trinicotinate . methods in presence of lithium and a catalytic amount of naphthalene , the reaction of p - methoxybenzyl trimethylsilyl ether and 3 , 5 - dimethoxylbenzaldehyde gave resveratrol after a series of translation . resveratrol trinicotinate was obtained by the reaction of resveratrol and nicotinoyl chloride hydrochloride . results a mutual prodrug resveratrol trinicotinate was designed and synthesized . conclusion a novel method for synthesis of resveratrol and resveratrol trinicotinate has been afforded . the e - isomer is selectivily obtained by dehydration of the compound 2 with khso4
文摘:目的合成一种前药白藜芦醇烟酸酯.方法在金属锂片和催化量的萘的存在下, 3 , 5 -二甲氧基苯甲醛与对甲氧基苯甲醇的三甲基硅醚反应经过一系列转变得到白藜芦醇,白藜芦醇与烟酰氯反应得到白藜芦醇烟酸酯.结果设计并合成了白藜芦醇烟酸酯.结论提供了一种合成白藜芦醇及白藜芦醇烟酸酯的方法,采用khso4脱水可选择性的得到反式产物