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- allylic bromination 烯丙位溴化作用
- Bromination takes place less readily. 溴化反应较不易发生。
- This bromination was unambiguous. 这一溴代反应是明确无疑的。
- High temperature bromination of octahydropentalene. 文题:Functionalization of saturated hydrocarbons.
- Keywords brominated butyl rubber;unsaturation degree;bromine content;Mooney;allylic bromine; 溴化丁基橡胶;不饱和度;溴含量;门尼黏度;烯丙基溴;
- It afforded a practical method to synthesize chiral allylic amines. 该方法是合成手性烯丙基胺类化合物的一个非常适用方法。
- This allyl type resin is a highly transparent, colourless material. 这种烯丙基型的树脂是一种高度透明的、无色材料。
- A resin derived from allyl alcohol that hardens when cured,used as an adhesive. 烯丙醇制成的树脂,加工后变硬,用作粘合剂。
- This allyl type of resin is a highly transparent, colourless material. 这种烯丙基型的树脂是一种高度透明的无色材料。
- Kaposi acrylic foam bonded to the allyl ether of sucrose polymers, acidic. 卡波沫为丙烯酸键合蔗糖的烯丙基醚的聚合物,呈酸性。
- This product with Br2 was obtained 2-bromo-4,5-hydroxymethoxybenzaldehyde through bromination. 再溴代得到2-溴-4;5-二甲氧基苯甲醛;收率为91.;9%25;并分析溴代过程中甲酰基的邻位效应及溴代产物的稳定性。
- Tinidazole was synthesized from metronidazole by bromination,thiolation and oxidation with total yield of 44.6%. 以甲硝唑为原料,经溴化、硫醚化和氧化合成替硝唑,总收率44.6%25。
- Ubiquinone Q_0 was synthesized by the bromination of p-cresolis,methoxylation,hydroxymethy]ation andoxidation. 辅酶Q_0是化学合成辅酶Q_(10)的母体化合物。
- Of these end groups those having an allylic chlorine might be expected to show the highest activity. 在这些端基中,带有烯丙基氯原子的端基活性最高。
- The oxygenizement reaction and bromination reactions of the process are improved. 其中第二步是以氯仿作溶剂,新洁尔灭作相转移催化剂,在室温下进行反应。
- Tetraallylsilane was obtained by the action of the tetrachlorosilane on the allyl Grignard regent. 将四氯化硅与烯丙基格氏试剂作用来制备四烯丙基硅。
- The tetrabromobisphenol a new kind of flame retardant is prepared by bromination of bisphend A. 四溴双酚A是一种用途较多的新型阻燃剂,可用双酚A经溴化合成。
- This paper laid em-phasis on the study of the allylic oxidation and halogenation. 着重研究其中的烯丙位氧化和卤代反应,提出合适的反应机理。
- METHODS:The target compound was prepared by the bromination and amination reaction. 方法:用溴代及胺化反应合成了四甲基吡嗪衍生物。
- The effects of the amount of sulfuric acid used and the reaction temperature on bromination were discussed. 该合成路线经溴代、羧基化和酰化等三步反应,以61.;7%25的总收率得到目的物。