methylene group

1. 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。
2. 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。
3. Palladium-Catalyzed α-Arylation of Compounds with Actived Methylene Group; Synthesis of arylidene Meldrum's acids using PEG-400 as green reaction media
   钯催化的活性亚甲基化合物α-芳基化反应芳基亚甲基麦氏酸在PEG-400中的绿色合成
4. The relative removal rate of methyl and methylene group showed the shape of M with the increase of temperature.
   甲基与亚甲基的相对脱除速率随温度呈现M型关系。
5. The effect of methylene group of α,ω-dicarboxylic acids on the volumetric properties, and the medium effect on it was discussed.
   讨论了α，ω二元羧酸中亚甲基数对体积性质的影响和溶液组成变化对体积性质的影响。
6. Proton NMR studies of 2-Zn insulin assignment of methyl and methylene group resonances from two-dimensional spectra
   二锌胰岛素质子二维核磁共振谱的研究&甲基，亚甲基共振峰的确定
7. No potential barrier is present in the insertion reaction between methylene and C H bonds adjacent to the oxygen atom and the potential barrier for the insertion between methylene and β C H bond in ethyl group is 3 4 kJ/ mol.
   亚甲基与毗邻氧原子的各CH键插入反应没有势垒，与乙基中β-CH键插入势垒仅3.4kJ/mol。
8. Based on the liquid crystal polymer theory, two kinds of polyacrylates were synthesized by choosing biphenyl group as rigid nucleus of mesophase group and six methylene chain as flexible spacing group.
   本论文根据液晶分子结构理论，选择联苯基作为介晶基元的刚性核、柔性的六亚甲基脂肪链为柔性间隔基，与丙烯酸反应，合成了两种丙烯酸酯型聚合物；
9. Studies on organophosphorous compounds IX. g-phosphorylation of compounds with an active methylene group
   有机磷化合物的研究Ⅸ.某些具有活泼亚甲基化合物的碳磷酰化反应
10. It is considered that the interaction between Methylene Blue and Chondroitin Sulfate has an effect on spatial locality interference and Interference Unit of CS is related to its sulfonic group.
    认为MB与CS相互作用具有空间位阻效应，CS的抗凝血功能与磺酸基有关。
11. Conclusion Insertion of methylene group between 4-position of phenyl and morpholinyl group in linezolid derivatives can not increase the antibacterial activity.
    结论在吗啉恶酮结构中苯环4位和吗啉基之间插入亚甲基，不能提高化合物的抗菌活性。
12. Catalytic Study on Hydrogenation of Carbonyl Group into Methylene or Methyl Group by Silica-supported Poly ( acrylonitrile-vinyltriethoxysilicon) Palladium(ⅱ) Complex
    二氧化硅负载聚（丙烯腈－乙烯基三乙氧基硅）钯（Ⅱ）络合物对羰基氢化还原成甲基或亚甲基的催化研究
13. Phase transfer catalyzed alkylation of active methylene group
    相转移催化活泼亚甲基的烃基化
14. Results 1% methylene blue group showed that the corneal endothelium cell lost normal hexagon structure and had some stained dead cells. There were significant difference between 1% methylene blue group and BSS group in mortality rate of corneal endothelium cell ( P0.01).
    结果1%亚甲蓝组角膜内皮细胞失去正常的六边形结构，可见较多着色死亡细胞，细胞的死亡率与对照组相比，有统计学差异（P0.01）。
15. Methods: 32 patients with acute peritonitis or intestinal obstruction were randomized into two groups: methylene blue group and control group.
    方法：32例急性弥漫性腹膜炎及粘连性肠梗阻手术病人被随机分为两组：美蓝组及对照组。
16. Two-Dimensional NMR methods were used to assign methyl and methylene group resonances in the NMR spectra of 2-Zn insulin.
    用二维核磁共振的方法确定二锌胰岛素质子核磁共振谱中的甲基，亚甲基基团共振峰。
17. Alkylation reaction happens when Ethyl diazoacetate reacts with alcohol, phenol, carboxylic acid, amine. Besides, Ethyl diazoacetate can also react with aldehydes or ketones to produce ketones which have one more methylene group.
    重氮乙酸乙酯能够与醇、酚、羧酸、胺等发生烷基化反应，还可以与醛酮反应生成多一个亚甲基的酮。

noun

1. the bivalent radical CH2 derived from methane

   Synonym:    methylene radicalmethylene