查询词典 synthetic method

Objective: To improve the one stage synthetic method of geranyl sulfone catalyzed by acid.

目的：研究酸催化一步制备香叶基砜的合成方法。

Geranyl sulfone; Acid catalysis; One stage synthetic method

香叶基砜；酸催化；一步合成

At first, the nanometer level cage structure, good thermodynamical and chemical stability and inflaming retarding properties, and relative merits of sol-gel synthetic method of POSS are introduced.

重点介绍了POSS改性传统聚合物的作用：如提高聚合物的使用温度，降低聚合物的介电常数，提高改性体系的力学性能和阻燃性能。

This synthetic method paves another new way for synthesis and functionalization of novel ladderlike polymers.

FTIR，1H-NMR，29Si-NMR，XRD，DSC，VPO及溶解性实验表明合成的梯形聚倍半硅氧烷具有很好的梯形结构。

On the other hand, the properties applications and synthetic method of Naringin dihydrochalcone and Neohesperidin dihydrochalcone , discussed detailedly.

同时，对柚皮甙二氢查尔酮和新橙皮甙二氢查尔酮两种甜味剂的性质、用途、合成方法、应用前景做了详细介绍。

A synthetic method for N-(5-nitro-6-chloro-3-pyridine methyl) phthalimide is studied.

研究了N-（5-硝基－6-氯－3-吡啶甲基）邻苯二甲酰亚胺的合成方法。

Aim To investigate a new synthetic method of 2-(4-bromomethylpheny1)propionic acid,the key intermediate of loxoprofen sodium.

摘要目的研究消炎镇痛药洛索洛芬钠的关键中间体2-4-溴甲基）苯基丙酸的合成新方法。

Synthetic method of butyl butyrate was investigated using silicotungstic acid ca talyst absorbed on activated carbon.

用活性炭固载硅钨酸催化剂催化合成了丁酸丁酯。

In this paper, the improvement of synthetic method of 2-acetylaminotropone is introduced. 3-Acetyltropolone reacted with low concen-tration methylamine solution and solvent was directly evaporated in reduce pres-sure to give 2-acetyl-7 -methylaminotropone in good yield. The compound reacted with phenyltrimethylammonium tribromide to give two new compounds.

本文介绍2-乙酰基-7-甲胺基酮合成方法的改进——用挥发性小的低浓度甲胺溶液与3-乙酰基酚酮反应；和采用直接减压蒸除溶剂法分离产品，得到较好产率的2-乙酰基-7-甲胺基酮；用化合物与三溴化苯基三甲铵反应，得到两种至今未见文献报道的新化合物。

Simultaneously we prepared benzimidazolines with two methods by the of reduction benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 13 kind of tetrahydroisoquinoline starting from carboxylic aicd and halid, gave a new idea of the synthesis for new drugs.It can make many kind ofβ-carboline alkaloids which have bioactivity to antibacterium, antivirus and antitumor to start from 1,2,3,4-tetrahydro -β-carboline.

本文以1，3-二甲基苯并咪唑碘盐和2-取代的1，3-二甲基苯并咪唑碘盐为原料，采用了NaBH_4还原和Grignard试剂加成两种方法，制备了13种1，3-二甲基苯并咪唑烷和2-取代的1，3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型，在酸性条件下，以2-(3，4-二甲氧基苯基)乙胺作为接收一碳转移的亲核试剂，完成了13种重要的四氢异喹啉类化合物的新合成方法研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。