The raw materials used by the method are green chemicals dimethyl carbonate and p-nitrophenol, and the catalyst is NaY molecular sieve, activated aluminum oxide or activated carbon which is impregnated by alkali metals or alkaline-earth metal compounds.

本發(fā)明涉及到一種合成對(duì)硝基苯甲醚的方法，該方法所用的原料為綠色化學(xué)品碳酸二甲酯和對(duì)硝基苯酚，催化劑是經(jīng)堿金屬或堿土金屬化合物浸漬過的NaY分子篩、活性氧化鋁或活性碳。

It is focused on the discussion of process parameter such as temperature, reaction period, and substrate concentration in autoxidation of o-nitrotoluene in alkali system, and the yield of o-nitrobenzalhyde is 30% under optimum condition.

論文著重討論了堿性條件下东京热官网入口，氧氣氧化鄰硝基甲苯的反應(yīng)，得出了溫度免费黄色网站多少、時(shí)間黄色免费高清视频一区二区三区、底物濃度、氧氣流量等一般工藝參數(shù)對(duì)反應(yīng)的影響www.hljwlb.com，得出在較佳條件下日韩伦理片精品视频网站免费，鄰硝基苯甲醛的收率可達(dá)30％左右。

Technology of synthesis of 2, 4, 8-trichloronitrobenzene by 1, 3, 5-trichlorobenzene, sulphuric acid and nitric acid was studied.

以1国产亚洲无线一区二区， 3亚洲激情第二页， 5-三氯苯為原料，在濃硫酸與濃硝酸的作用下硝化成2亚洲中文字幕区， 4亚洲手机小视频网站， 6-三氯硝基苯。

Furthermore, through molecular structural design, we have also synthesized stable dual functional diphenylether polymer intermediates of ABB' types possessing ortho-dicarboxylic at one aromatic ring and diamine groups at another beginning from Xylenol and 1-Chloro-3,4-dinitrobenzene as the raw materials.

中文摘要本研究應(yīng)用自氧化法與氫化法兩反應(yīng)，成功而有劾地制備出芳香族含酸酐及二胺基之官能基單體国产视频自拍视频，并進(jìn)一步經(jīng)由分子結(jié)構(gòu)設(shè)計(jì)中文字幕在线中文不卡，從3，4-二甲苯酚及1-氯-3国产AV真人一区二区凹凸，4-二硝基苯為原料亚洲国产看片基地久久1024，轉(zhuǎn)化合成出安定性高帶有羧基與雙胺基雙官能基之塹新ABB'型二苯醚中間體，并成功地應(yīng)用此中間體從事自聚合反應(yīng)免费人成在线观看爱品网，而合成分歧狀聚醚亞醯胺高分子一区二区欧美性爱。

The experimental results from cyclic voltammetry and constant-potential electrolysis show that the mechanism of the reaction was two molecules and three steps electrochemical process with eight-electrons transferred: anion radical arose in the first step; two-electrons were transferred in the second step and accompanied with coupling reaction of radicals and protonation and dehydrate, the main product was azoxybenzene; two-electrons were transferred in the third step, and azobenzene was achieved.

研究結(jié)果表明，硝基苯在鉑電極上的電還原反應(yīng)為雙分子八電子三步驟電化學(xué)過程：第一步反應(yīng)為準(zhǔn)可逆單電子轉(zhuǎn)移步驟超碰97在线网，產(chǎn)生陰離子自由基美女叉开腿让男生桶爽视频；第二步為二電子轉(zhuǎn)移步驟，并伴有隨后的雙分子不可逆自由基偶合反應(yīng)和快速質(zhì)子化及脫水反應(yīng)国产毛片短激情视频，主要產(chǎn)物為氧化偶氮苯亚洲视频在线毛片；第三步是二電子轉(zhuǎn)移產(chǎn)生偶氮苯的過程。

The recent advances in the main clean processes to synthesize diphenylmethane diisocyanates are reviewed, such as BTC method, condensation of aniline, reductive carbonylation of nitrobenzene, oxidative carbonylation of aniline, methoxycarbonylation of aniline, alcoholysis of N,N'-diphenyl urea and the coupling process.

回顧了清潔合成二苯甲烷二異氰酸酯的幾種主要方法欧美性爱网站。，如BTC法、苯胺縮和法啊嗯久久、硝基苯還原羰基化法人人精品视频免费观看、苯胺氧化羰基化法、碳酸酯法殴美性爱三级片网、二苯基脲法和反應(yīng)耦合法等合成路線一级黄片三级黄色一级毛片三级毛片。

Further studies on the sulfinatodehalogenation of I〓 with olefinsindicated that either symmetrically and unsymmetrically disubstituted adducts could beobtained depending on the amount of 〓 and temperature. Non-fluorinated compounds (such as dichloro-, chloroacetates, chloroform) andCFCs e.g.

由于此反應(yīng)能被對(duì)二硝基苯和對(duì)苯二酚（HQ阻止，光照反應(yīng)加速18禁黄网站禁片免费观看在线，且與二烯丙基醚反應(yīng)時(shí)得到的產(chǎn)物為四氫呋喃衍生物免费黄色网址1，所以我們推斷反應(yīng)歷程是一個(gè)自由基反應(yīng)過程。

The experiment consist of two parts :the first one research nucleophilic addition of m-dinitrobenzene, nucleophilic reagent is benzyl cyanide; the second one synthesize 2,4-dihydorxybenzophenone from 2,4-dichlorobenzophenone and NaOH.

實(shí)驗(yàn)分為兩部分：第一部分研究了間二硝基苯的親核加成反應(yīng)色黄色免费在线，親核試劑為芐基腈国产黄色网站播放；第二部分是用2，4-二氯二苯甲酮與氫氧化鈉反應(yīng)制備2www久久网，4-二羥基二苯甲酮俄罗斯特级黄片免费观看一区二区三区。

A Potassium ion transfer and electron transfer between potassium ferricyanide in the aqueous phase and ferrocene in nitrobenzene are observed using potassium ferricyanide/potassium ferrocyanide as the redox couple. Meanwhile, the transfer reactions of some hydrophilic ions (Li〓, Na〓, H〓, K〓 and NH〓〓) are obtained using ferric sulfate/ferrous sulfate as the redox couple.

a以鐵氰化鉀/亞鐵氰化鉀為電對(duì)觀察到鉀離子在水/硝基苯界面上的轉(zhuǎn)移和鐵氰化鉀與三茂鐵之間的異相電子轉(zhuǎn)移過程；以硫酸鐵/硫酸亞鐵為電對(duì)觀察到強(qiáng)親水性陽離子(Li〓美女销魂国产一级A片、Na〓yw193.com、H〓、K〓和NH〓〓)在水/硝基苯界面上的轉(zhuǎn)移国产激情综合网。

We synthesized polynitrobenzenes by oxidation of polynitroanilines by peroxysulfuric acid (hydrogen peroxide dissolved in sulfuric acid, it is also known as Caro's acid) several years ago.

我們?cè)谌舾赡昵坝眠^硫酸(過氧化氫溶于硫酸中国产天美精品VA在线观看，亦稱卡洛氏酸)氧化多硝基苯胺而合成了多硝基苯類(硝基數(shù)3至6)。