异腈

The experimental results show that using the feed technique of "starved state" can raise the conversion ratio of monomers, shorten the reactive time and get polymers with much more even distribution of molecular weight; the technique of adding azobisisobutyronitrile as an initiator first and then benzoperoxide as another initiator at later Stage of experiment can get higher initiating efficiency than using one initiator only.

结果表明：采用&饥饿态&聚合工艺可提高单体转化率，缩短反应时间，且所得到聚合物相对分子质量分布均匀；选用偶氮二异丁腈和过氧化笨甲酰两种引发剂进行复配，比选用单一引发剂的引发效果好；选用酯酸丁酯、正丁醇和丙二醇甲醚丙酸酯作混合溶剂，当配比为2：1：1时聚合体系稳定，聚合物的固体质量分数可达70%，且粘度适中。

A new synthesis method of Taxane s was reported involving radicals generated from hypophosphorous acidn initiated by 2,2′-azobisisobutyronitrile.

由偶氮二异丁腈引发次磷酸产生次磷酸根自由基，以链式自由基反应机制脱除紫杉烷类化合物结构中的含氧基团，简单、高效地合成了紫杉烷。

A new synthesis method of Taxanes was reported involving radicals generated from hypophosphorous acid n initiated by 2,2′-azobisisobutyronitrile.

由偶氮二异丁腈引发次磷酸产生次磷酸根自由基，以链式自由基反应机制脱除紫杉烷类化合物结构中的含氧基团，简单、高效地合成了紫杉烷。

Oxidation of alkenes catalyzed by metalloporphyrin imidazolium salts in the presence of N-hydroxyphthalimide and isobutyraldehyde as co-catalysts provided the epoxidation product at room temperature. And the solvent with a weak coordinating ability such as acetonitrile gave the best result.

金属紫质咪唑盐於烯类的氧化催化反应上，若与NHPI及异丁醛共催化，可在室温进行环氧化反应，反应溶剂选择具有弱配位能力的乙腈，则可获得较佳结果。

Objective:To establish a RP-HPLC method to quantify a new chemical entity HZ08N-cyano-1-[(3,4-dimethoxyphenylmethyl]-3,4-dihydro-6,7-dimethoxy-N -octyl-2(1H)-isoquinoline carboximidamideand its related substances.

目的：建立HZ08N-腈基-1-[(3，4-二甲氧基苯基甲基]-3，4-二氢-6，7-二甲氧基-N-辛基-2(1H)-异喹啉碳酰亚胺的含量测定及有关物质检查方法。

A GC headspace injection method for the determination of residual organic solvents such as methanol, ethanol, acetonitrile, dichloromethane, ethylacetate, 4 methyl 2 pentanone, toluene, DMF, chloroform and tetrahydrofuran in tazobactam was established.

建立了气相色谱顶空进样法测定三唑巴坦中甲醇、乙醇、乙腈、二氯甲烷、乙酸乙酯、甲基异丁基酮、甲苯、N ，N′-二甲基甲酰胺、氯仿和四氢呋喃等有机溶剂的残留量。

The main results and conclusions are as following:(1) By using the femtosecond time-resolved fluorescence up-conversion technique, we studied the ultrafast excited state photoisomerization process of 33TC dye molecule.

主要内容和结论如下：(1)利用飞秒时间分辨荧光上转换技术对3，3'-磺酸基丙基噻腈三乙胺盐(33TC)的超快激发态光异构过程进行了研究。

Fourthly, The preparation of 1 -triazolyl-2-isoxazolinyl substituted-ethenes was developed through an one-pot 1, 3-dipolar cycloaddition of NaN_3 and RI,α-alkylation reaction of substituted allyl bromides and 1, 3-dipolar cycloaddition of nitrile oxidesbased on polystyrene-supported propargyl selenide.

四、从聚苯乙烯负载的炔丙基硒醚出发，通过与叠氮化钠和碘化物的一锅法1，3-偶极环加成反应、取代烯丙基溴的α-烷基化反应和腈氧化物的1，3-偶极环加成反应固相合成了1—三唑—2—异噁唑啉取代的-乙烯。

PK values of 3-ethoxy-N-desmethyldiazepam (3-EtO-NDZ) in ethanol and acetonitrile containing various concentrations of sulfuric acid, determined by spectrophotometry and spectropolarimetry, were found to be 3.4 and 0.63 respectively. Temperature dependent racemization of enantiomeric 3-EtO-NDZ in ethanol containing various acid concentrations was studied by monitoring changes of ellipticity at 365 nm as a function of time on a spectropolarimeter.

3-乙氧基－N去甲基安定（3-EtO-NDZ；diazepam=安定）在含不同硫酸浓度的乙醇和乙腈中的pK值用光谱法和旋光光谱法作了测定，其结果分别为3.4和0.63.3-EtO-NDZ之对映异构体在含各种不同酸浓度的乙醇中与温度相关的消旋过程，用旋光光谱仪选择其圆二色谱在365nm波长处强度的改变为时间函数的方法作了测定。

Waste oil category: Waste oil, waste hydraulic oil, waste oil, waste oil injection, waste kerosene, waste of white mineral oil, white waste oil, waste oil sparks, the repeal of toluene, waste cutting oil, gear oil, lubricants, batteries oil, spindle oil, zorra, oil, turpentine oil, solvent oil, gear oil, oil rails; waste chemical categories: one, the repeal of toluene, xylene waste, spent 2 pure benzene, acetone waste, waste Ding ketone, cyclohexanone 3 waste, waste dichloromethane, dichloroethane waste, waste Dichloropropane 4, solvent categories: soluble oil 6 #, 120 # dissolving agents, dissolving agents 200 # 5, trichloro ethylene, dichloromethane, trichloroethane; tetrachlorethylene, trichloromethane 6, the repeal of methanol, ethanol, waste, waste alcohol, isopropyl alcohol waste 7, the repeal of ethylene glycol, diethylene glycol waste, spent three 8 glycol, waste butyl acetate, ethyl acetate wastewater, waste acetate 9, the repeal of ethyl ether, acetonitrile waste, waste petroleum ether 10, cleaning categories: cleaning agent, washing machine water, days that water; wash board water,×oil wastewater liquid 11, the supply of tires category: special supply of fuel oil, non-standard oil, burner oil, waste oil and other refined crude oil.

废油类：废机油，废液压油，废柴油，废注塑机油，废煤油，废白矿油，废白电油，废火花机油，废甲苯，废切削油，齿轮油，润滑油，废电池机油，锭子油，索拉油，松节油，溶剂油，齿轮油，导轨油等；废化工类：1、废甲苯、废二甲苯、废纯苯2、废丙酮、废丁酮、废环已酮3、废二氯甲烷、废二氯乙烷、废二氯丙烷4、溶剂类： 6#溶油剂， 120#溶油剂， 200#溶油剂5、三氯乙烯，二氯甲烷，三氯乙烷；四氯乙烯，三氯甲烷6、废甲醇、废乙醇、废丁醇、废异丙醇7、废乙二醇、废二甘醇、废三甘醇8、废醋酸丁酯、废醋酸乙酯、废醋酸甲酯9、废乙醚、废乙腈、废石油醚10、清洗类：清洗剂，洗机水，天那水；洗板水，去渍油等废液废水11、废轮胎类供应：特价供应燃料油，非标油，烧火油，废油提练的原油等。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。