羥基香豆素 的英文怎麼說
中文拼音 [qiǎngjīxiāngdòusù]
羥基香豆素
英文
hydroxy coumarin- 羥 : 名詞[化學] (羥基) hydroxyl (group)
- 香 : Ⅰ形容詞1 (氣味好聞) fragrant; sweet smelling; aromatic; scented:稻香千里 the fragrance of ripen...
- 豆 : 1 (豆類作物或豆類作物的種子) legumes; pulses; beans; peas 2 (古代盛食物用的器具) an ancient s...
- 素 : Ⅰ形容詞1 (本色; 白色) white 2 (顏色單純) plain; simple; quiet 3 (本來的; 原有的) native Ⅱ名...
- 豆素 : hyoscyamine
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Hydroxyquinol triacetate was prepared from p - benzoquinone by 1, 4 - addition reaction with acetic anhydride and then 6, 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid. then 6, 7 - dimethoxy coumarin was synthesized by methylating from 6, 7 - dihydroxy coumarin with an overall yield of 74. 4 %. the procedure was practical. its structure was confirmed by ir and 1hnmr
對苯醌與乙酸酐經1 , 4 -加成生成1 , 2 , 4 -苯三酚三乙酸酯,然後與蘋果酸反應經水解、環合反應得6 , 7 -二羥基香豆素,再經甲基化得到6 , 7 -二甲氧基香豆素,總收率為74 . 4 % ,整個過程反應條件溫和,操作方便,適合工業生產的要求,對產品結構進行了ir和1hnmr表徵。The primary synthetic methods of 4 - hydroxycoumarin was reviewed starting from phenol, 2 - acetylsalicylic acid, methyl salicylate, and o - hydroxyacetophenone respectively
摘要概述了4 -羥基香豆素的合成方法,重點介紹了苯酚法,乙酰水楊酸法,水楊酸甲酯法,鄰羥基苯乙酮法。They added a small amount of the fluorescent dye coumarin to the emitter material tris ( 8 - hydroxy - quinoline ) aluminum
他們在發光材料三( 8 ?羥基口喹啉)化鋁里,加入了少量的螢光染料香豆素。
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