Silsesquioxanes are a large branch of organic-inorganic silicon-containing compounds. They can be represented as RSiO_(3/2_n, where R can be hydrogen or any alkyl, alkylene, aryl, arylene groups, or organo-functional derivatives of them.

倍半硅氧烷是指所有符合經(jīng)驗(yàn)公式RSiO_(1.5)(這里R代表氫或任何烷基午夜福利A片视频www、烯基本费黄片免费小视频、芳基或有機(jī)功能取代的烷基、烯基又爽又色的网站、芳基)的有機(jī)無機(jī)化合物欧美黄色大力插。

It provides a route tothe compounds which contains three functional groups, two carbon-nitrogentriple bonds and one carbon-carbon double bond. In water, metallic indiumpromotes carbon-sulfur bond coupling reaction of aromatic sulfonyl chloride withsuitable organic halides to afford sulfones. In the last chapter, metallic tin mediated allylation of aldimines with allylbromide was revealed.

第三章，我們研究了在水相介質(zhì)中金屬銦促進(jìn)的烯丙基溴對(duì)1完全免费的黄色视频在线观看，1-二氰基-2-芳基乙烯的Michael加成反應(yīng)日韩天天精品综合，生成一個(gè)含碳碳雙鍵和二個(gè)碳氮叁鍵的三官能團(tuán)化合物，另外，金屬銦在水介質(zhì)中還可以促進(jìn)芳基磺酰氯與鹵代烴發(fā)生碳硫鍵的偶聯(lián)美女国产福利网站，生成砜日本大片黄色。

Study on Surface Enhanced Raman Scattering of Piperidine;2. Using piperidine as catalyst and ethanol as solvent, a series of new 2-amino-3-cyano-4-aryl-6-methoxy-1,4,9,10-tetrahydronaphtho[2,1-b]pyran derivatives were synthesized by one-pot reaction of aromatic aldehydes, malononitrile and 7-methoxy-1,2,3,4-tetrahydronaphthalen-2-one at room temperature in good yields.

以芳醛、丙二腈和 7 甲氧基 1国内机关自拍视频在线观看，2 黑人和黑人一级毛片，3 ，4 四氫萘 2 酮為原料欧美乱人伦中文视频在线观看，在六氫吡啶催化下以乙醇為溶劑97欧美性爱在线，在室溫合成了一系列新的 2 氨基 3 氰基 4 芳基 6 甲氧基 1，4在线免费黄色视频。，9精品国产黄，10 四氫萘并 [2 ，1 b]吡喃衍生物亚洲图片欧美色视频，反應(yīng)條件溫和最近更新的中文字幕免费的视频，產(chǎn)率較高，并通過IR 国产一级视频鲁啊鲁，1HNMR和元素分析表征產(chǎn)物的結(jié)構(gòu)日批黄色视频，還通過單晶X射線衍射分析確證產(chǎn)物的構(gòu)

The analysis of SAR reveals that the activities of target compounds are closely associated with the electron-withdrawing substituents at the para position of 1-aryl-1, 2, 4 -triazoles as well as with the substituents such as sulfonyl and methylthio groups at the 3 position of 1, 2, 4 -triazoles; And the introduction of sulfamoyl moiety at the para position of 5-aryl-1,2,4-triazoles also has significant influence on the anti-inflammatory activity of these compounds.

構(gòu)效關(guān)系分析發(fā)現(xiàn)，在三唑環(huán)1位芳基的對(duì)位引入F人人操人人干人人爽超碰、Cl欧美日韩国产精品自拍、Br吸電子基團(tuán)以及3位引入磺酰基和甲硫基igao激情视频网，對(duì)抗炎活性有重要的意義在线观看国产妓女网站；在三唑環(huán)5位芳基的對(duì)位引入氨磺酰基吹潮视频高清在线观看，對(duì)抗炎活性有較大影響欧美精品A片视频黑人。

New sulfonyloxadiazolones have the formula, in which A stands for hydrogen, sulphur,-SO-,-SO2- or a group, in which R stands for hydrogen or alkyl; R stands for optionally substituted cycloalkyl, cycloalkenyl or aryl; and R stands for optionally substituted alkyl, alkenyl, dialkylamino or aryl.

本發(fā)明涉及式新的磺酰基__二唑酮成超碰在线，其中毛片久久，A代表氧、硫中国一级黄色尤物网站、－SO－操逼网av、－SO 2 －或基團(tuán)，其中R 3 代表氫或烷基超碰在线a；R 1 代表任選被取代的環(huán)烷基，任選被取代的環(huán)烯基或任選被取代的芳基国产成人精品热播亚洲AV；和R 2 代表任選被取代的烷基午夜试看120秒无码体验区，鏈烯基，二烷基氨基或芳基。

In this thesis, investigations focused on heteropoly acids-catalyzed C-C and C-N bond formation reactions and the synthesis of xanthenediones and acridinediones under thermal conditions are described.1.12-Phosphotungstic acid has been used as an efficient,eco-friendly,and air- and moisture-stable catalyst to promote the direct dehydrative substitution of the hydroxy group of benzylic and allylic alcohols with variousβ-dicarbonyl compounds.

本篇論文主要描述了雜多酸催化下的C-C和C-N鍵的生成99精品视频在线看，以及無溶劑直接加熱下合成十氫氧雜蒽二酮和9-芳基十氫吖啶二酮免费污黄视频网站。主要內(nèi)容如下：1。在磷鎢酸催化下国内自拍无码区在线播放2021，1你懂的视频在线，3-二羰基化合物與醇能夠順利偶合，脫除一分子的水美女和男生黄色视频网页，生成烷基化的1国线播产色产黄，3-二羰基化合物。反應(yīng)在甲苯中進(jìn)行時(shí)国产,欧美性爱一区，二芳基甲醇能與各類1综合日韩，3-二羰基化合物反應(yīng)，成率很高无码专区无码专区丝袜美腿；但對(duì)于1-苯乙醇日韩一级无码毛片不卡网站，只能得到很低的產(chǎn)率。

But under the same conditions, the reactions of the complex (41) with organic lithium reagents give a kind of novel complexes in which the nucleophile is added to the a-carbon of the phthalazine ring.

然而含有橋羰基的2日本女人被强奸久久久久，3-二氮雜萘配位的羰基雙鐵絡(luò)合物4l在相同的條件下與芳基鋰試劑反應(yīng)時(shí)91绿帽论坛，芳基鋰卻是親核加成在氮雜環(huán)的α位羰上，生成一類結(jié)構(gòu)獨(dú)特的雙氮雙鐵羰基絡(luò)合物精品一区在线。

0Mol%. The catalytic system combining Pd 〓, imidazolium salt and pyridine has been employed in the cross-coupling of unactive aryl chlorides with malononitrile.

對(duì)大多數(shù)溴代芳烴而言黄片免费进，無論芳環(huán)上取代基是吸電子的，還是給電子取代基少妇黄色视频，均可高產(chǎn)率地制備得到相應(yīng)的α—芳基丙二腈化合物（產(chǎn)率＞85％）亚洲色图欧美色图观看日本一道。

Under these conditions several aryl iodides bearing a wide range of functional groups were converted into the corresponding aryl azides in good yields.

在重新優(yōu)化后的條件下，大部分不活潑芳基溴化物可以與疊氮化鈉發(fā)生交叉偶聯(lián)反應(yīng)得到良好收率的芳基疊氮化合物欧美A片观看视频，但是有拉電子基團(tuán)取代的芳基溴化物與疊氮化鈉的偶聯(lián)反應(yīng)則難以進(jìn)行国内色站。

Under these conditions several aryl iodides bearing awide range of functional groups were converted into the corresponding aryl azides in good yields.

在重新優(yōu)化后的條件下，大部分不活潑芳基溴化物可以與疊氮化鈉發(fā)生交叉偶聯(lián)反應(yīng)得到良好收率的芳基疊氮化儲(chǔ)蓄型投資銀條合物有没有网站免费播放黄色一级片，但是有拉電子基團(tuán)取代的芳基溴化物與疊氮化鈉的偶聯(lián)反應(yīng)則難以進(jìn)行人妻啪啪色视频。