三乙胺
- 与 三乙胺 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The results indicate that the optimized sulfonylation reaction time is 4 h, the materiel rate of chlorosulfonic acid and 2-chloroimidazo[1,2-α]pyridine is 1.2 : 1, with ethylamine the yield increasing from 15.4% to above 70%; the optimized ammonolysis reaction time is 3 h and the reaction temperature is 27℃, with the acetonitrile yield increasing from 60.1% to above 79.6%.
实验结果表明,磺酰化反应的最佳反应时间为4 h,氯磺酸与2-氯咪唑并[1,-α]吡啶的用量比为1.2:1,加入三乙胺可将收率由15.4%提高到70%以上;氨解反应的最佳反应时间为3 h,反应温度为27 ℃,加入乙腈可将收率由60.1%提高到79.6%;方案经改进后,总反应时间缩短3 h,收率提高了5.5%。
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Some materials were synthesized in this paper at first, 1-nitro-2-pentanol was synthesized with nitromathane and butyraldehyde and the yield was 70.2%; l-nitro-2-pentanol was reduced to 1 -amino-2- pentanol with iron and the yield was 65.2%.
分别用氢氧化钠、三乙胺为缚酸剂,2-氨基-1-丁醇、1-氨基-2-戊醇、环己酮和二氯乙酰氯为原料,采用一步法和分步法合成了两种潜在除草剂安全剂。
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Methods:A YWG-C18 column was used.The mobile phase consist ed of acetonitrile containing 0.2% methanol-water solution containing 0.1% tri ethylamine and 0.1% phosphoric acid(3∶97)and the detection wavelength was 220 nm.
采用高效液相色谱法,色谱柱为YWG-C18柱,流动相为0.2%甲醇的乙腈溶液-含0.1%三乙胺、0.1%磷酸的水溶液(3∶97),检测波长为220 nm。
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On the basis of insoluble hydantoin bactericide prepared,the hydrophilic groups,such as trimethylamine group and triethylamine group,were introduced to the loading resin,such as chloromethyl polystyrene and formyl polystyrene.
在制成水不溶性海因类杀菌剂的基础上,在其载体树脂如氯球和醛基树脂上引入亲水基,如三甲胺基或三乙胺基。
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The better technology has been obtained: taking water-EG as solvent 2-imidazolidinone was prepared. The molar ratio of the methanal (36%) to the formic acid (85%) is 1:2.8, reaction temperature is 95~100℃, reaction time is 16 h, taking cuprous chloride and triethylamine as catalyst, the molar ratio of the cuprous chloride and triethylamin to 2-imidazolidinone is 1.0% while 1,3-DMI was prepared.
较佳工艺条件为:制备2-咪唑啉酮时,以水-乙二醇混合作溶剂;制备1,3-DMI时,甲醛(36%):甲酸(85%)摩尔比为1:2.8,反应温度95~100℃,反应时间16 h,氯化亚铜和三乙胺作催化剂,用量分别是2-咪唑啉酮摩尔数的1.0%。
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The synthesis of vitamin E oleate by using vitamin E and oleic acid was studied.
以维生素E及油酸为原料,乙酸酐为共反应剂,三乙胺为催化剂合成了维生素E 油酸酯。
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Through orthogonal experiment,the reaction was carried out in acetate anhydride co-reagent and triethylamine as catalyst.
以维生素E及油酸为原料,乙酸酐为共反应剂,三乙胺为催化剂合成了维生素E油酸酯。
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The first step is conducted at a pH in the range of about 4.5-9.5, employing the combination of a hexaalkylguanidinium salt as a phase transfer catalyst and a tertiary amine such as triethylamine.
第一步骤是在pH值为约4.5―9.5的范围内进行的,使用作为相转换催化剂的六烷基__盐和叔胺如三乙胺的混合物。
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Two compounds were synthesized with two methods. The two compounds can be synthesized by two steps with triethylamine as catalyst.
分别用氢氧化钠、三乙胺为缚酸剂,3-氨基-2-丁醇、2-氨基-3-戊醇、环己酮和二氯乙酰氯为原料,采用一步法和分步法合成了两种潜在除草剂安全剂。
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The title compounds were synthesized by the reaction of symmetric N , N '-diarylthioureas with hexylamine in the presence of triethyl amine,and the intermediate N , N '-diarylthioureas were formed by the direct reaction of carbon disulfide and arylamines.
首先采用二硫化碳与胺直接反应得到对称的N, N'-二芳基硫脲,然后在三乙胺存在下与环己胺反应得到1-环己基-3-芳基硫脲。产物结构经核磁共振和质谱分析确证
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。