By using the a device being similar to water segregator and by controlling the temperature, cyclization of the intermediate product in chloroform reduced carbonization and gave 2-dodecaneanthraquinane in 68.1% yielding.

以十二烷基苯和苯酐為起始原料欧美国产综合，經(jīng)踝耘娜蘸访兰で槭悠翟谙吖劭矗基化一级AⅤ、關(guān)環(huán)和磺化三步反應(yīng)合成了3-十二烷基蒽醌磺酸性爱黄色欧美日韩；并進(jìn)一步改進(jìn)和優(yōu)化了合成工藝條件：即在催化劑三氯化鋁過(guò)量50%并有三乙胺存在的條件下中文字幕第二一区，中間體2-（4-十二烷基苯甲跞巳烁扇巳瞬偃巳颂蛉巳嗣基）苯甲酸收率為72.45%；關(guān)環(huán)反應(yīng)采用氯仿作溶劑91POPNY丨国产熟女，利用類似分水器的裝置有效控制反應(yīng)溫度以減少碳化国内美女精品人AV在线播放，2-十二烷基蒽醌的收率為68.1%欧州免费AV午夜福利。

Project Background and Conditions: The company started research new chemical products in 1998. After two years of efforts, a series of pharmaceutical intermediate sulfathiazole leave instructions, including : 3- methyl sulfathiazole leave instructions, 2- sulfathiazole leave instructions ethanoic acid, 2- acetyl sulfathiazole leave instructions, 2-thiofuran amino ethane ,2-thiofuran acetic, 3,4,5- tighter nitrobenzene have been successfully developed. 2-thiofuran amino ethane are the precursors raw materials of series antibiotic analgesic.

二、項(xiàng)目建設(shè)背景及條件：1998年公司開始研究開發(fā)高新精細(xì)化工產(chǎn)品99精品视频在线看，經(jīng)過(guò)兩年的努力欧美A片精品，已成功研制出噻吩系列醫(yī)藥中間體，包括：3-甲基噻吩可以看视频的黄色网站、2-噻吩乙酸导航福利136、2-乙酰噻吩、2-噻吩乙胺久久va中文字幕影视、2-噻吩乙醇白白发布国内在线视频、3，4毛片a视频，5-三氯硝基苯等国产av黄色片。2-噻吩乙胺系列噻吩產(chǎn)品使用于血小板及血栓有關(guān)的心臟血管病及消炎鎮(zhèn)痛等如氯吡格雷、興孢噻吩鈉国产免费污网站在线观看、興孢西丁最新欧美狂野日韩精品国产、噻吩洛酸等十幾種新藥的前體原料，是國(guó)家政策鼓勵(lì)發(fā)展和有自主知識(shí)產(chǎn)權(quán)的項(xiàng)目精品射射射福利一区。

To understand the reaction of tetrakis hydroxymethyl phosphonium chloride with collagen protein,the interactions of THPC with polycaprolactam,poly vinyl alcohol or ethylenediamine which were used as the model substances of amido,hydroxy and amino groups of collagen protein were examed.

通過(guò)研究THPC與聚己內(nèi)酰胺不卡av在线免费观看、聚乙烯醇、乙二胺的酰胺基亚洲国产一区二区三区青草影视、羥基欧美激情偷乱人伦小说专区、氨基的反應(yīng)，間接證明THPC主要與膠原蛋白的氨基結(jié)合鸥美色精品在线播放，可與氨基以n∶n=1.0∶2.2形成交聯(lián)又污又黄又爽的网站，THPC與羥基和酰胺基均有少量結(jié)合，并在pH=8.0時(shí)結(jié)合量最高成年人在线观看。

In order to investigate the mechanism for this reac-tion, methyl α-bromoacetate or ethyl α-bromoacetate as starting material was added to the solution of phenyl selenoamide in ethanol in 1∶1 or 2∶1 molar ratio under the neutral condition at room temperature. The results indicated that the same product bis or bis diselenide was formed. Byproduct ethyl benzoate was also separated.

為了研究該反應(yīng)機(jī)理人人妻人人干，選擇α-溴代乙酸甲酯或α-溴代乙酸乙酯在無(wú)催化劑、中性條件下在线免费免费观观看看的黄色视频，乙醇溶液中與苯基硒代酰胺室溫下反應(yīng)人人插人人透人人射人人色人人干，投料比為1∶1和2∶1，結(jié)果也都生成了同一類產(chǎn)物二甲氧羰基甲基二硒醚或二乙氧羰基甲基二硒醚yw在线，同時(shí)還分離得到了相應(yīng)的副產(chǎn)物苯甲酸乙酯久久国产精品83。

In order to investigate the mechanism for this reaction, methyl α-bromoacetate or ethyl α-bromoacetate as starting material was added to the solution of phenyl selenoamide in ethanol in 1:1 or 2:1 molar ratio under the neutral condition at room temperature. The results indicated that the same product bis or bis diselenide was formed. Byproduct ethyl benzoate was also separated.

為了研究該反應(yīng)機(jī)理，選擇α-溴代乙酸甲酯或α-溴代乙酸乙酯在無(wú)催化劑亚洲精品你懂的在线播放、中性條件下欧美老妇逼，乙醇溶液中與苯基硒代酰胺室溫下反應(yīng)，投料比為1：1和2：1免费观看黄色网站一区二区，結(jié)果也都生成了同一類產(chǎn)物二甲氧羰基甲基二硒醚或二乙氧羰基甲基二硒醚美国一级做受，同時(shí)還分離得到了相應(yīng)的副產(chǎn)物苯甲酸乙酯亚洲成年不卡网址。

In the forth part, the heterotactic enthalpic pairwise interaction coefficients between five amides and butanediol isomers (1,3-butanediol, 1,4-butanediol and 2,3-butanediol) at 310.15K are discussed. The change of temperature made remarkable effects on the values of h_.

第四部分：經(jīng)測(cè)定得到了五種酰胺與丁二醇的三種異構(gòu)體在298.15K(25℃)時(shí)的各級(jí)異系焓相互作用系數(shù)，并進(jìn)行了分析比較精品思思啪啪，討論了五種乙酰胺分子與三種丁二醇分子的相互作用機(jī)制jizz女。

RESULTS: 12 compounds were isolated and identified as aurantiamide acetate (1), aurantiamide benzoate (2), physcion (3), scopoletin (4), vanillin (5), coniferyl aldehyde (6), syringaldehyde (7), syringic acid (8), luteolin (9), apigenin (10), azelaic acid (11), dotriacontanic acid (12), respectively.

結(jié)果：從羊耳菊全草的氯仿和乙酸乙酯部分共分離得到12個(gè)化合物，分別鑒定為橙黃胡椒酰胺乙酸酯(1)日本性爱网，橙黃胡椒酰胺苯甲酸酯(2)免费看污视频的网站，大黃素甲醚(3)，東莨菪亭(4)成熟丰满熟妇XXXXX图片，香草醛(5)久久精品大全，松柏醛(6)，丁香醛(7)欧美性一级交视频，丁香酸(8)欧美中文一级A片在线播放，木犀草素(9)，芹菜素(10)强奷漂亮的护士中文字幕，壬二酸(11)国产目拍精品一区二区，三十二烷酸(12)。

Agriculture maize as Indicator plant, by raising it in soil with acetochlor, to study the herbicide antidote N-dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane on protect maize residual damage from acetochlor.the result of experiment is: the growths of maize is lower than comparison value.

以墾玉6號(hào)玉米為指示材料日韩精品一区在线播放视频，采用土培法研究了除草劑解毒劑N-二氯乙跞巳瞬迦巳巳巳瞬偃巳怂基-2-甲基-1-氧雜-4-氮雜-螺[4.4]壬烷減輕除草劑乙草胺對(duì)玉米產(chǎn)生的殘留藥害。實(shí)驗(yàn)結(jié)果表明：在施用不同濃度的乙草胺土壤中美国毛片AAA在线播放，玉米植株的各項(xiàng)生長(zhǎng)指標(biāo)均低于空白對(duì)照值自拍欧美亚洲日韩美女。

Compared the homogeneous enthalpic interaction coefficients of glycine in aqueous potassium chloride solutions with that in aqueous sodium chloride solutions and discussed different cations influence on the interaction of glycine in aqueous solutions. The dilution enthalpies of DMF in aqueous ethylene glycol, glycerol, glucose and sucrose solutions of various molalities have been determined using CSC4400 flow microcalorimetry at

本文選擇N国产精品久久久精品一级，N—二甲基甲酰胺為模型化合物国产精品视频男人的天堂，用流動(dòng)量熱法測(cè)定了298.15K下DMF在不同濃度的乙二醇、甘油肏擦网站、蔗糖和葡萄糖水溶液中的稀釋焓国产黃色A片视频1，根據(jù)McMillan-Mayer理論，計(jì)算了其在不同溶劑組成下的同系焓相互作用系數(shù)被插下面视频，得到水溶液中多羥基化合物與酰胺的相互作用規(guī)律人人射97。

In this research, liposoluble chlorogenic laurate was synthesized by the acylation with lauroy chloride in the existence of alkali catalyst in non-water phase, and yellowish CGL powders with a yield of 81.24% were obtained under the optimal synthesis conditions determined via single-factor tests and orthogonal experiments, that is, carrying out the acylation at 35℃ for 8h with a n:n: n ratio of 1:1:1.5 and with dimethylformamide as the solvating agent and the thinner.

文中對(duì)綠原酸進(jìn)行了改性，即在堿性催化劑催化的條件下使其與月桂酰氯進(jìn)行非水相的酯化反應(yīng)538国产在线视频，得到了脂溶性的綠原酸月桂酸酯97超碰免费。經(jīng)過(guò)單因素及正交試驗(yàn)，確定了最佳合成條件為：以N99r在线观看视频精品，N-二甲基甲酰胺作為溶解处女开破视频、稀釋劑，綠原酸／月桂酰氯／三乙胺的摩爾比為1：1：1.5亚洲欧洲第一区二区三区，溫度控制在35℃美国,国产欧美一区，反應(yīng)時(shí)間8h无码国产精品一区二区gif。