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- ionone semicarbazone 紫罗酮缩氨基脲
- A method on synthesis of ionone from litsea cubeba oil had been developed. 改进了由山苍子油合成紫罗酮的方法。
- The yield of the pseudoionone and ionone was 96. 2% and 97. 6% respectively. 反应条件温和;周期短;缩合反应的产率达96.;2%25;环化反应的产率达97
- You will also characterize the semicarbazone by melting point determination. 你也要通过测定熔点以鑑定缩胺基脲。
- Dry the semicarbazone in your desk until the next laboratory session. 在你的书桌上，将缩胺基脲干燥直至下一次实验课为止。
- Lutein and zeaxanthin are both dihydroxy-carotenoids with the ionone ring systems distributed widely in nature. 叶黄素和玉米黄质是含紫罗酮环的二羟基类胡萝卜素,在自然界广泛存在。
- You will convert the carvone to its semicarbazone for use in a polarimetric analysis. 为了作旋光度分析，你将会把香芹酮转变为缩胺基脲。
- Lutein is dihydroxy-carotenoids with the ionone ring systems distributed widely in nature. 叶黄素是含紫罗酮环的二羟基类胡萝卜素,在自然界广泛存在。
- Ionone was synthesized from Litsea cubeba oil and lemen oil,and condition of condensation,cyclization and purification of product was studied. 以山苍子油、柠檬草油为原料合成紫罗兰酮,研究了缩合反应、环化反应、产品精制的工艺条件;
- The company, founded in 2001, specializing in the production of sales ionone, Cang-class integrated oil products spices. 本公司创建于2001年，专业生产销售紫罗兰酮、山苍籽油类综合香料产品。
- The optimal reaction condition was obtained.The yield of poudoallyl ionone reaches 74. 5%,the yield of objective product allyl ionone reaches 87. 5%. 假性烯丙基紫罗兰酮收率达74．5%25，目标产物烯内基紫罗兰酮收率达87．5%25。
- The common constituents included ionone,hexanal, hexanol, hexenal, hexenol, lactones, terpenic alcohols,etc, which are major contributors to apricot aroma,but their contents are different in two cultivars. 相同成分有紫罗酮、己醛、己醇、己烯醛、己烯醇、内酯类、萜烯醇类等 ,这些成分共同构成杏果实的香味 ,但其含量在两个品种间存在差异。
- The effects of reaction temperature, reaction time, the amount of catalyst used and other related factors on the yield of ionone were investigated to obtain the optimal reaction conditions. 考察了反应温度、反应时间、催化剂用量及其它相关因素对收率的影响 ,确立了优化的反应条件。
- Take the melting point of the dry solid semicarbazone derivative and record the yield.If it is necessary to recrystallize the semicarbazone derivative, you may do so from an ethanol/water mixture. 测定干燥的缩胺基脲衍生物的熔点，并记录其产量，如果有需要将缩胺基脲衍生物进行再结晶的话，你可以用乙醇/水的混合物来进行。
- Ionone violet was synthesized by using tetranbutylammonium bromide as a phase transfer catalyst under normal at mosphere. The optimum parameters for preparing Ionone violet were discussed. 在常压下以四丁基溴化铵作相转移催化剂合成制得假性紫罗兰酮,研究了各反应因素对目的产物收率的影响。
- Catalytic Synthesis of Ionone by Nickel Sulfate 硫酸镍催化合成紫罗兰酮
- Synthesis and Application of Ionone 紫罗兰酮的合成及应用
- Synthesis of ionone by solid superacid catalyst 固体超酸催化合成紫罗兰酮
- The Synthetic Experiment of Ionone 香料紫罗兰酮的合成试验
- One-pot Synthesis of Benzaldehyde Semicarbazone 一锅法合成苯甲醛缩氨基脲
