The invention relates to a method for preparing arylamine compounds by the catalytic hydrogenation of arene nitro compounds in a H2O-CO2 system, wherein H2O-CO2 is taken as reaction medium, and the arylamine compounds are prepared by the selective hydrogenation of the arene nitro compounds at a low temperature(between 25 and 100 DEG C), and the catalytic process is controllable, highly efficient and green.

本發(fā)明涉及H 2 O-CO 2 體系中芳烴硝基化合物催化加氫制備芳胺類化合物的方法国产精品三级片网站。以H 2 O-CO 2 為反應介質黄片com.，由芳烴硝基化合物低溫(25-100℃)選擇性加氫制備芳胺類化合物的可控国内特一级A片黄片、高效亚洲一区免费观看、綠色催化過程。

The maximal absorption wavelength of the nitro-stilbene derivatives with an ether bond exhibited approximate 30 to 40 nm bathochromic shift compared to that of nitro-stilbene dyes with an ester bond.

相對于酯鍵而言福利性视频，通過醚鍵連接的對硝基二苯乙烯類分子的最大吸收波長有一個大約30至40 nm的紅移現象国产农村乱免费视频。

It's found that the aromatic dinitro compounds can be monoreduced to nitroanilines in high selectivity, aromatic nitro compounds and muti-cycle aromatic nitro compounds can be quantitively reduced to the corresponding amine by selenium catalyst with CO/H2O in polar aprotic solvents under atmospheric pressure using medical inorganic bases as co-catalysts.

在實驗的基礎上提出了對硒催化CO/H_2O還原芳香硝基化合物機理的一些粗淺認識。

First, 5-nitro-1 and 4-naphthoquinone are prepared through nitration and oxidization of naphthalene, and then through reduction of nitro into amide, diazotisation of the amide and hydro-lytic action of diazo salt, the juglone is made.

萘經過硝化精品在线精品视频、氧化生成5-硝基-1免费无遮挡黄色网站，4萘醌，然后硝基還原成氨基黄色高清无码在线、氨基重氮化、重氮鹽再水解中文字幕在线更新资源站，最終用新方法制得胡桃醌欧洲性爱一级二级网站视频。

The first synthetic route uses 1,2,4-trimethoxybenzene and chloroacetonitrile in forming 2,4,5-trimethoxy-a-chlor-acetophenone under the anhydrous condition, then the intermediate condensates with papaverine forming the core pyrro[2,l-a]isoquinoline, followed by formation and lactonization to form the lactone ring. The second synthetic route uses prepared aldehyde with prepared ethyl nitroacetate by Knoevenagel condensation to obtain 2-Nitro-3-(2,4,5-tris-methoxy-phenyl)-acrylic acid ethyl ester and 2-Nitro-3-(2,4,5-tris-benzyloxy -phenyl)-acrylic acid ethyl ester etal intermediates. The lamellarin skeleton could arise from condensation of the papaverine and these intermediates by Michael reaction, the ester group is provided for subsequent lactonization. The third synthetic route uses coumarin or indan-l,3-dione derivatives and papaverine to form lamellarin under basic conditions.

第一條路線首先從1，2人人操人人草色，4-三甲氧基苯出發(fā)與鹵乙腈作用合成鹵代芳酮中間體午夜熟女毛片，然后與罌粟堿反應合成開鏈片螺素，最后經乙趸芶v在线日韩；琅闾迦蘸扇送敬笕⑷ケＷo、成內酯環(huán)得到片螺素一级AAAAAA大黄片；第二條路線由制備的芳醛和制備的硝基乙酸乙酯經縮合得到2-硝基-3-芳基丙烯酸乙酯亚洲日韩一区二区三区网站，然后由該中間體與罌粟堿反應，在完成關環(huán)的同時也引入酯基国产醉酒迷奷系列在线观看，最后去保護国产AV大学生情侣AV、成內酯環(huán)得到片螺素；第三條路線是由香豆素或茚二酮出發(fā)中文,不卡,AV，經溴代后的中間體與罌粟堿反應六六六日黄色视频，得到片螺素的基本框架www.影音资源.com。

The results of batch experiments showed that the anaerobic biodegradation kinetics of 2-CNB and 4-CNB by granular sludge were follwed by first-order reaction. The nitro groups of 2-CNB and 4-CNB were more easily attacked by electron than chlorines and they were reductively biotransformed to amino groups under anaerobic conditions. The acclimated anaerobic granular sludge, which could dechlorinate 4-chloroanline to aniline, showed that it had the ability of para-dechlorinating. The anaerobic biodegradating on pathway of 2-CNB and 4-CNB were suggested as follows:AbstractIn ZVI(zero-valent iron, Fe0)-reduction system, the nitro groups of 2-CNB and 4-CNB were reductively transformed to amino groups.

2分批試驗結果證明，顆粒污泥降解2-CNB和4-CNB遵循一級動力學AV永久免费网站在线观看大全，在厭氧條件下观看免费黄色网站免费，CNB發(fā)生序列的硝基還原與脫氯作用，苯環(huán)上的硝基比氯原子更容易受到親電子攻擊亚洲一级AV黄片，發(fā)生還原反應生成氨基www被啪啪舒服了；所獲得的顆粒污泥具有對位脫氯活性，可使4-CA進一步脫氯形成苯胺欧美激情視頻。2-CNB和4-CNB厭氧降解的建議性途徑為： ZVI(Zero-valentiron)對2-CNB和4-CNB的作用主要是將苯環(huán)上的硝基還原為氨基三级片91韩国自拍；在ZVI與污泥共還原轉化體系中，ZVI對氯代硝基苯的硝基轉化具有一定的促進作用女人与拘猛交69，但因ZVI對中間產物的吸附特性精品偷拍第50页视频，終產物形成速率趨慢。

Aniline and nitro-benzene in air and water can be identified by nitro and phosphor detector with large diameter capillary in quantitative analysis method.

采用大口徑毛細管色譜柱和氮磷檢測器建立了水及空氣中苯胺及硝基苯的定量分析方法欧美y，線性范圍0 ~ 80μg /L欧美亚洲欧美亚洲日韩中文视频，檢測下限1μg /L，重現性好国产精品-色哟哟，結果令人滿意亚洲欧美中文日韩V日本。

The mechanism of dioxygen oxidation of NTS to DNS in alkali solution under mild condition was inquired into. The result showed that the key step in the preparation of DNS from NTS was the formation of 4-nitro-2-sulfobenzyl anion as a result ionization of NTS in strong alkali and then oxidization to 4-nitro-2sulfobenzyl radical by activated dioxygen.

探討了在溫和條件下于堿的水溶液中氧氣液相氧化4-硝基甲苯-2-磺酸制取4，4'-二硝基二苯乙烯-2日韩欧美国产三级片，2'-二磺酸的反應機理超碰超干，發(fā)現4-硝基甲苯-2-磺酸在堿作用下發(fā)生離子化生成4-硝基-2-磺酸基芐基陰離子，然后被活化的分子氧氧化成4-硝基-2-磺酸基芐基自由基是反應的關鍵步驟囯产免费看黄色视频。

Synthetic nitro-musks are used in the most wide area recently and industrial crystallization is the most important process to separate solid mixtures such as perfumes. In order to develop new crystallization process to separate synthetic nitro- musks, the phase equilibrium of musk ketone, musk xylene and 1,3-dimethyl-2, 4- dinitro-5-tert- butyl benzene were studied.

合成硝基麝香是用量最大的合成麝香而工業(yè)結晶是分離香料等固體產品的重要方法国产熟女一区另类，為了開發(fā)麝香體系結晶分離新工藝，本文首先研究了酮麝香美国无码在线、二甲苯麝香和1欧美乱辈伦小说，3-二甲基-2，4-二硝基-5-叔丁基苯的相平衡關系男士免费黄网。

For the first three months of pregnancy, women should try to avoid perming hair, perming agents due to the nitro-containing compounds and alkaline hydrogen peroxide; especially hair dyes containing nitro-, amino-aromatic compounds, may affect fetal development, resulting in severe fetal deficiency occurred.

對于懷孕頭三個月的婦女日韩乱伦一区二区，應盡量避免燙發(fā)染發(fā)，因燙發(fā)劑中含堿性的硝基化合物和過氧化氫老司机欧美一级在线视频；特別是染發(fā)劑含有硝基欧美美国性交肛交高清、氨基的芳香族化合物，會影響胎兒的發(fā)育中文字幕第1页在线观看，嚴重的導致胎兒發(fā)生缺陷癥免费看无码特级毛片。