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Bis(1,2,3,4-tetrahydroisoquinoline-2-ylmethyl) HBr salt (K2) guest has been synthesized from 1,2,3,4- tetrahydroisoquinoline and ethylenedibromide. The self-assembly interaction models of cucurbit[8]uril (Q[8]) with this synthetic guest have been investigated by using 1H NMR technique, single crystal X-ray diffraction determination and theoretic calculation method.

以用1,2,3,4-四氢喹啉和二溴乙烷合成的二(2-亚甲基-1,2,3,4-四氢异喹啉)的溴化氢酸盐为客体,八元瓜环为主体,利用1H NMR技术,单晶X射线衍射方法以及理论计算等方法,考察了两者的自组装模式。

The described tackifier is applicable to perchloride raw rubber based on fragment form and non-halide or low-halide raw rubber, and can make most of allyl group implement bromation reaction in priority.

所述增粘剂基于碎片形式的高氯化生橡胶和非卤化或低卤化的生橡胶,并优选使大部分的烯丙基进行溴化反应。

In the process of laboratory study, oxycodone was prepared by oxidating thebaine at 6,14-position under oxydol, hydrodeoxidizing 7,8-position double bond and 14-position ether under palladium catalyst. Furthermore, N-methyl of oxycodone was isolated byα-chloro-ethyl chloroformate under anhydrous condition and protection of 14-position hydroxyl to obtain noroxycodone, which was further converted into methylnaltrexone by N-alkylation in presence of cyclopropyl bromomethane, then by isolating 3-position methyl of methylnaltrexone under boron tribromide, becoming hydrochloride to prepare target compound, natrexone hydrochloride.

实验室工艺方面,本文首先用双氧水氧化蒂巴因的6-位和14-位、在钯炭催化下加氢还原7-8位双键和14-位醚合成羟考酮,然后提出并优化了在无水和14-位保护的情况下,用氯甲酸-α-氯乙酯脱去羟考酮的N-位甲基合成去甲羟考酮,再用环丙甲基溴将去甲羟考酮的N-位烷基化合成甲基纳曲酮,最后采用三溴化硼脱去甲基纳曲酮的3-位甲基和成盐酸盐合成盐酸纳曲酮。

Chapter three: The studies of zinc dust assisted the green carbonyl olefination under thesolvent-free conditions.

第三章:锌粉促进无溶剂下羰基化合物的绿色烯基化反应研究该部分首次研究了在TMSiCl存在下,无溶剂非催化条件下,锌粉促进溴化苄与羰基化合物的烯基化反应,发现在无溶剂锌粉促进下,可以将羰基化合物立体选择性

The structure of BNRL and the mechanism of Natural Rubber Latex's bromination were studied by Infrared Spectroscopy and Nuclear Magnetic Resonance.

结果表明:溴原子已经接到天然橡胶分子链上,其C-Br键对应的红外光谱位置分别为1088cm-1、956cm-1、908cm-1、774cm-1;天然胶乳的溴化反应机理与BNRS的相似。

The overall yield was 43.6%.The yield of reduce of ester was increased nearly one times than the past method because of KBH4-LiCl as the reducing agent instead of NaBH4. Changing the reaction conditions of bromization, the one-way yield enhanced 30%. The yield of reduce of the bromide was added by one times by improving the process. Tefluthrin was achieved by the catalytic esterification of DCC and DMAP.

优化后工艺对四氟对苯二甲酯的还原采用了廉价高效的还原试剂KBH4-LiCl,使收率比NaBH4法提高了近一倍;对溴化反应条件进行了优化,单程收率提高了30%;对溴化物还原条件的优化,使其收率提高了近一倍;采用了催化剂DCC和DMAP合成了最终产品七氟菊酯。

Polystyrene-MMT nanocomposites were prepared by free radical polymerization of styrene containing dispersed clay. The organophilic MMT particles were easily dispersed and swollen in styrene monomer.

采用双-苯基二甲基十八烷基溴化铵作为有机插层剂对钠基蒙脱土进行了有机化处理,该有机化的蒙脱土粒子在苯乙烯单体中很容易地均匀分散并形成稳定的胶体溶液。

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。

One subject of the present work relates to a green chemistry synthesis of tetrabromobisphenol A wherein the combination of sodium bromide and sodium bromated as brominating agent which completely replaces conventional liquid bromine.

据文献报道,该产品在某些阻燃材料中将是十溴二苯醚的理想替代品之一,目前,仅有国外公司在销售该种产品,我国还没有实现真正的工业化生产,所以研制开发溴化环氧树脂阻燃剂具有重要意义,本文研究工作主要包括三方面的内容。

Restriction on the Use of Hazardous Substances bans new electronics containing more than agreed-to levels of lead, cadmium, mercury, hexavalent chromium, and polybrominated biphenyl as well as polybrominated diphenyl ether flame retardants.

在关于有毒物质使用的欧洲联邦法律限制新型电子设备中含有超标的铅、镉、汞、六价铬和多溴化联苯、多溴化二苯醚阻燃剂。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。