甲基溴

This investigation was prepared MCM-41 catalyst films on silicon wafer in ammonia media, using tetraethyl orthosilicate as a precursor and cetyltrimethylammonium bromide as a surfactant.

中文摘要本研究以四乙基氧矽溶液为矽酸盐的来源，溴化十六烷基三甲基铵盐为界面活性剂，在氨水的环境下，制备MCM-41触媒薄膜於矽晶片上。

The intermediate which obtained from oximation of 7a-e reacted withmethyl N-(2-bromomethylphenyl)-N-methoxycarbamate to synthesize oxime ether methyl carbamate 3a-e.

以邻位卤代苯甲醛和3-丁烯-2-醇为原料通过钯催化&一锅法&反应合成了2-乙酰基茚7a-e，7a-e 肟化之后和N-(2-溴甲基苯基)-N-甲氧基氨基甲酸甲酯反应合成了肟醚类氨基甲酸甲酯3a-e，进一步胺解之后得到了肟醚类氨基甲酰甲胺3f-j。

The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.

在大量实验和分析的基础上，可得到以下结论：用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘化铵固体高聚碘和四丁基多碘化溴化铵固体高聚碘系列化合物，是制备高聚碘的经济、方便的合成方法，但此法对合成四甲基多碘化铵固体高聚碘系列化合物并不适用；TX-10是合成溶液高聚碘较佳的络合剂，通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘；采用树脂法，通过离子交换，合成出了碘三、碘五和碘七形式的树脂高聚碘，此法简单可行。

The effect of components including tetracholrophthalic acid, phthalazine and antifoggant with tribromomethyl sulfone groups on photographic properties of FTG materials was investigated in different pH, using polyvinyl alcohol as a hydrophilic binder, in situ formed AgBr as light sensitive component.

本文以水性聚乙烯醇为粘合剂，原位法合成的AgBr作为光敏元，考察了组分四氯邻苯二甲酸、酞嗪以及三溴甲基砜类防灰雾剂在体系不同pH值时对PTG材料感光性能的影响。

The synthetic route starts from penicillin G, peroxyacetic acid(8.5%) as Oxidizing Agent to get penicillin G sulfoxide; esterifided with p-nitrobenzyl bromine to synthesize penicillin G sulfoxide ester; we synthesize 3-exomethylenecepham sulfoxide ester with phthalimide potassium and 4A molecular sieve as acid scavenger to open the ring, SnCl_4 as catalyzation to close the ring. The yield is over 60%.

本研究采用的合成路线为：以青霉素G钾盐为原料，选用工业过氧化氢制备的过氧乙酸(22.3%)稀释至8.5%为氧化剂，氧化得青霉素亚砜；采用对硝基溴苄为酯化试剂，制备青霉素亚砜酯；以NCP(N-氯代邻苯二甲酰亚胺)为开环试剂，酞酰亚胺钾和4A型分子筛为酸清除剂，顺利开环；再经无水SnCl_4催化闭环得3-环外亚甲基头孢亚砜酯，最终产率在60%以上。

From the starting material: propargyl alcohol, the building block was prepared easily by Jones oxidation, esterfication, bromination and selective trifluoromethylation.

第一部分：从丙炔醇出发，经过Jones氧化，甲酯化，顺式二溴化，再选择性地在酯基的β位实现三氟甲基化，合成了目标含氟砌块。

Improved synthesis of 2-(4-bromomethylphenyl)propionic acid,the key intermediate for loxoprofen sodium,was investigated.

对洛索洛芬钠的关键中间体2-(4-溴甲基苯基)丙酸的合成工艺进行了改进研究。

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。

Results and conclusion The structure of 2-(4-bromomethylphenyl) propionic acid was identified by 1H-NMR, FT-IR and MS analysis. The target compound was prepared in an overall yield of 38%.

结果与结论关键中间体2-（4-溴甲基）苯基丙酸的结构经1H-NMR、FT-IR、MS谱确证，目标化合物的总收率为38%。

Results and conclusion The structure of 2-(4-bromomethylpheny1)propionic acid was identified by1H-NMR, FT-IR and MS analysis. The target compound was prepared in an overall yield of 38%.

结果与结论关键中间体2-4-溴甲基）苯基丙酸的结构经1H-NMR、FT-IR、MS谱确证，目标化合物的总收率为38%。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。