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- One of the hydrogen atoms of the active methylene group is replaced with a cyclooxy group. 活性亚甲基上的一个氢原子是被环氧基所取代的。
- This paper reports the function of anhydrous potassium fluoride and acetonitrile in C-alkylation of active methylene group of acetoacetic ester. 无水氟化钾和乙腈在乙酰乙酸乙酯活泼亚甲基的C-烃基化中的作用。
- Phase transfer catalyzed alkylation of active methylene group 相转移催化活泼亚甲基的烃基化
- Reactions of Ferrocenecarboxaldehyde with Compounds Containing Active Methylene Group in Aqueous Solution 二茂铁甲醛与含活性亚甲基化合物的水相反应研究
- active methylene group 活性亚甲基
- Appropriate aromatic amines were diazotized and coupled with the active methylene of the PVK to give a group of yellow pigments, which have the similar properties with Hansan Yellow dye. 然后再以合适的芳胺经重氮化反应偶合到PVK的活性亚甲基上，合成出类汉沙黄颜料。
- Carbasugars,carbocyclic analogues of true sugars,are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene group. 碳环糖是一类呋喃或吡喃糖环中的氧原子被亚甲基取代后形成的糖类似物。
- Carbasugars, carbocyclic analogues of true sugars, are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene group. 摘要碳环糖是一类呋喃或吡喃糖环中的氧原子被亚甲基取代后形成的糖类似物。
- A large number of structures of benzene methyl and methylene groups but rare aralkyl ether linkage existed in the waste liquor. 两种废液木素中都含有大量的苯环及甲基、亚甲基结构，几乎不存在烷基芳基醚键结构；
- Carbasugars, carbocyclic analogues of true sugars, are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene groupe. 碳环糖是一类呋喃或吡喃糖环中的氧原子被亚甲基取代后形成的糖类似物。
- Substitution position of methylene group 热处理
- Its long molecules, consisting of tens and hundreds of thousands of methylene groups (!CH2!), cannot exist as long stretched polymeric chains, which might be called a “primary structure. 它是一个大分子的化合物，是由数万数千万的二次甲基（-CH2-）组成的，不能长期以高分子链的延伸存在，这可以称之为“基本结构”。
- She is much the most active member in our group. 她绝对是我们组最活跃的成员。
- Keywords NMR spectra;chemical shifts;nitramine;methylene group; 核磁共振波谱法;化学位移;硝胺;亚甲基;
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- The Condensation of Aromatic Aldehyde with Active Methylene Compounds in Water 水溶剂中羰基与活性亚甲基化合物的缩合反应
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Keywords hydrazone;aromatic diazonium salt;active methylene compound;synthesis; 腙;芳香族重氮盐;活泼亚甲基化合物;合成;
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智？
