dimethoxy 中文意思是什麼

dimethoxy 解釋
二甲氧基
  1. Amino4, 6 - dimethoxy pyrimidine

    二甲氧基嘧啶
  2. 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。
  3. Abstract : the phenyl lithium, 2 - methoxy phenyl lithium and 2, 4 - dimethoxy phenyl lithium reacted with the cinnamic acid to produce a corresponding chalcone in 75 %, 56 %, 50 % yield, respectively. 2, 6 - dimethoxyphenyl lithium could not react with cinnamic acid, but reacted with methyl cinnamate to produce 2 ， 6 - dimethoxychalcone

    文摘:苯基鋰、 2 -甲氧基苯基鋰和2 ， 4 -二甲氧苯基鋰分別與肉桂酸反應以75 ， 65 ， 50的收率生成相應的查爾酮； 2 ， 6 -二甲氧基苯基鋰與肉桂酸不發生反應，但能與肉桂酸甲酯反應生成2 ， 6 -二甲氧基查爾酮；類似的還制得了2 ， 4 ， 6 -三甲氧基查爾酮和2 ， 4 ， 4 ， 6 -四甲氧基查爾酮。
  4. Common name for the pest control chemical - 2 - chloro - 6 - 4, 6 - dimethoxy - 2 - pyrimidinyl thiobenzoic acid " pyrithiobac

    病蟲害防治用化學藥品的通用名稱. " pyrithiobac
  5. Synthesis and crystal structure of 3, 4 - dimethoxy - 4 - nitro stillbene

    硝基芪的合成和晶體結構
  6. Chloro 3, 4 - dimethoxy pyridine hcl

    二甲氧基吡啶
  7. A novel selective demethoxy reaction - a synthetic method of 3, 5 - dimethoxy - 4 - hydroxybenzoate

    羥基苯甲酸甲酯的新合成方法
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