Products: 3 - benzoyl-ethyl acrylate (97% min), acyl phosphorus acid methyl ester (98% min), P acyl three ethyl acetate (98% min), a phosphorus acid acyl The ethyl esters (98% min), 3 - bromine -1,3,4,5 - tetrahydrocannabinol -2 H-1-benzo-Aza Zhuo -2, 1 - naphthalene-tetrahydrocannabinol (98% min), 3,5 - dimethyl benzoyl chloride (99% min), 3,5 - dichloro benzoyl chloride (97% min), the ethyl benzoyl chloride (99% min), a TCA Ester (99.5% min), o-benzoyl methyl benzene (99% min), 4 - phenyl benzophenone (99% min): glacial acetic acid (99% min), methanol (99% min), liquid chlorine (99.5% min), caustic soda (30% min), isopropyl alcohol (99% min), anthranilic acid (99% min), dichloroethane (99% min ), Chunben (99% min), toluene 99% min

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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.

優(yōu)化后工藝對四氟對苯二甲酯的還原采用了廉價(jià)高效的還原試劑KBH4-LiCl18禁福利免费网站无遮掩，使收率比NaBH4法提高了近一倍；對溴化反應(yīng)條件進(jìn)行了優(yōu)化男人的天堂网免费网站，單程收率提高了30%先锋影音最新AV看片资源；對溴化物還原條件的優(yōu)化，使其收率提高了近一倍黄色视频在线观看免费网；采用了催化劑DCC和DMAP合成了最終產(chǎn)品七氟菊酯免费A片吃奶玩乳视频。

Dibenzyl oxalate was synthesized from oxalic acid, potassium hydroxide and benzyl bromide under microwave irradiation using tetrabutylammonium bromide as phase-transfer catalyst and polyethylene glycol-200 as solvent.

在微波輻射條件下，以草酸欧美,曰韩,国产馆在线视频、氫氧化鉀和溴化芐為原料黄片一级aaaaa免费视频，四丁基溴化銨為相轉(zhuǎn)移催化劑，聚乙二醇200為溶劑合成了草酸二芐酯少妇精品无码专区视频仙踪林，并通過熔點(diǎn)和紅外光譜對產(chǎn)物的結(jié)構(gòu)進(jìn)行了表征久久这里都是精品1。

Formylation and diformylation of dithieno [2,3-b:3',2'-d] thiophene were prepared by two methods. Firstly, aromatic carbanions were prepared by 1 Br/Li exchange of bromo dithieno[2,3-b:3',2'-d]thiophene with n-BuLi in THF at low temperature; 2 deprotonation of dithieno[2,3-b:3',2'-d]thiophene with LDA.

二噻吩并[2，3-b：3'人人干人人操比，2'-d]噻吩單醛與雙醛的制備首先通過兩種方法產(chǎn)生芳基負(fù)離子：1溴代并三噻吩在四氫呋喃中與正丁基鋰發(fā)生的溴鋰交換片黄色网站天天；2用LDA對二噻吩并[2，3-b：3'激情视频第一页，2'-d]噻吩去質(zhì)子化作用老熟影院。

These compounds are of substantial interest both inviewpoints of theory and practical applications, mainlyunder the stimulus to achieve synthetic models either foractive sites of iron-sulfur proteins or for transitionmetal catalysts. This thesis describes the synthesis, structures andconformations of 51 new iron-sulfur cluster complexes,which have been characterized by elemental analysis andstandard spectroscopic methods. In addition, single-crystalX-ray diffraction analyses were performed for 4 representa-tive new compounds. Reactivities of μ-〓 with mono- and di- Grig-nard reagents derived intermediates toward various organicelectrophilic substrates were studied, along with complexa-tion of arynyl-containing iron-sulfur clusters by 〓Thus, several bridged, non-bridged, monomeric, dimeric,homonuclear, heteronuclear iron-sullfur and iron-sulfur co-balt-carbon cluster complexes were synthesized. A novelreaction and convenient route for the synthesis in highyield of tetranuclear iron complexes 〓 containing atetracoordinated sulfur atom was discovered, whereas aplausible mechanism based on experimental results was propo-sed for the formation of the new cluster type.

鑒于有機(jī)鐵硫原子簇化學(xué)在基礎(chǔ)理論發(fā)展和應(yīng)用方面的重要意義，因此我們開展了這一課題的研究丰满女人特级毛片视频，并取得以下主要成果： 1色网在线视频、本文共合成了51個(gè)新有機(jī)鐵硫及含鈷碳簇基的有機(jī)鐵硫原子簇配合物啪视频在线，除用元素分析，NMRav东京热影音先锋播放，IR影音先锋最新av资源，MS法表征其結(jié)構(gòu)和構(gòu)象外，還用X-光衍射技術(shù)測得四個(gè)代表性配合物的單晶結(jié)構(gòu)和構(gòu)象婷婷五月综合网中文综合网； 2在线欧美h、我們業(yè)已發(fā)現(xiàn)炔基Grignard試劑同〓可形成一種&開環(huán)&與&閉環(huán)&中間物的平衡混合物，研究該平衡混合物同各種親電試劑的反應(yīng)在线观看午夜国产猫咪影院视频； 3国产色色一级免费视频、研究發(fā)現(xiàn)了一種可高產(chǎn)率地形成〓含〓四配位硫攣合簇的新化學(xué)反應(yīng)并對此反應(yīng)提出了—種有趣的反應(yīng)機(jī)理； 4欧美AAAA色、首次由1wwwwⅹⅹxx，4-二溴丁烷雙Grignard試劑與〓制得一種新型鐵硫簇雙硫陰離子活性中間體，并進(jìn)而研究了它的親核反應(yīng)性能中文字幕亚洲图片； 5福利午夜国产一区二区三区、找到了通過〓的光化學(xué)反應(yīng)來合成簇合物〓-〓的一條有實(shí)用價(jià)值的新路線。

The company has two production¨×biopsy device, the three modified PTT and PTT fibers,¨×fiber production line, a set of three monomers (isophthalic acid, 5 - sodium) production unit, a four-monomer production line with annual production of 15,000 tons slice¨×composite and PTT fibers, staple¨×compound, PTT modified fiber 15,000 tons and 1,000 tons of the four monomers, three monomers 1200 tons, brominated flame retardants EPS with the capacity of 3000 tons .

公司擁有兩套波斯倫切片生產(chǎn)裝置欧美日韩口爆吞精一二区，三條PTT及改性PTT纖維91色偷偷色噜噜狠狠网站、波斯倫纖維生產(chǎn)線，一套三單體（間苯二甲酸老师挤奶水A片无码网站，5-磺酸鈉）生產(chǎn)裝置GOGO人体无码视频私拍，一套四單體生產(chǎn)線，具有年生產(chǎn)波斯倫復(fù)合切片15000噸和PTT纖維人人操人人肉人人、波斯倫復(fù)合短纖中国黄色网站大全免费看、PTT改性纖維15000噸及四單體1000噸，三單體1200噸国产AV无码专区久久桃色、溴系EPS用阻燃劑3000噸的能力999精品无码一级A片。

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.

在大量實(shí)驗(yàn)和分析的基礎(chǔ)上，可得到以下結(jié)論：用固相法可以合成出碘三成人黄色视频在线播放1、碘五三上悠亚精品区在线看AV网站、碘七、碘九和碘十一形式的正四丁基多碘化銨固體高聚碘和四丁基多碘化溴化銨固體高聚碘系列化合物97人妻人人操人人摸，是制備高聚碘的經(jīng)濟(jì)www干、方便的合成方法，但此法對合成四甲基多碘化銨固體高聚碘系列化合物并不適用一级黄色日逼视频看看；TX-10是合成溶液高聚碘較佳的絡(luò)合劑国产精品无码无套在线，通過其絡(luò)合作用可以合成出碘三和碘五形式的溶液高聚碘；采用樹脂法91在线精品，通過離子交換黄色的视频在线免费看在，合成出了碘三最新自拍偷拍精品视频、碘五和碘七形式的樹脂高聚碘，此法簡單可行性色在线观看视频免费网站。

Tetra-O-benzyl-D-glucose reacted with bromine to give glucosylbromide. It reacted with hydroxyl phenyl acetonitrile or hydroxyl benzaldehyde to give substituted ph- enylacetonitrile or substituted benzaldehyde.11 New stilbenes were synthesized possessing 2,3,4,6-tetra-O-benzyl-D-glucoside by condensation reaction with pheny lacetonitrile or benzaldehyde, which had potential biological activity and would be sieved in the future.

由2AV毛片三级片在线观看，3，4超碰日韩精品在线看，6-四芐氧基葡萄糖作為中間體欧美日韩精品综合在线一区二区，首先制備出的溴代糖和含有羥基的苯甲醛和苯乙反應(yīng)制備出含有糖的取代苯甲醛和取代苯乙，再和簡單的苯乙或苯甲醛縮合反應(yīng)生成11種具有潛在的生物活性且含有2免费大黄片，398极品少妇精品视频，4，6-四芐氧基葡萄糖的類化合物黄色操逼片，這些新化合物有待于進(jìn)一步進(jìn)行藥理活性篩選久久久精彩视频。

The chlorin e6 7 and chiorin 11 were oxidized further with osmium oxide in the same oxidization condition to yield bateriochlorin 8 and 12, respectively.

卟吩醛2在堿性條件下轉(zhuǎn)化為卟吩e6三甲酯7，2與烷基溴化鎂的格氏反應(yīng)給出脫鎂葉綠酸醇9欧美成人aⅴ在线播放，選擇高釕酸四丙基銨和N-甲基嗎啉N-氧化物將3-位羥基氧化成羰基色呦呦一站二站，所生成的卟吩二酮10在酸性條件下脫去甲酸甲酯生成焦脫鎂葉綠酸衍生物11，用四氧化鋨對7和11實(shí)施氧化色中色污网站，則分別轉(zhuǎn)化為細(xì)菌卟吩衍生物8和12欧美性爱干。

The experimental results indicate that:As an anode additive, tetraethyl ammonium bromide can perfectly complex with bromine.

實(shí)驗(yàn)結(jié)果表明：(1)四乙基溴化銨作為一種正極添加劑能很好地與溴絡(luò)和。