碱性反应

The modified process, by using sodium bisulfite instead of triphenyl phosphite, represented a very simple product isolation procedure.

同时，我们对聚乙二醇链的作用进行了详细的研究，发现它在这一反应中起到了相转移、稳定催化剂活性物种及增强反应体系碱性的作用。

The optimum conditions and the influence factors were investigated, and the composition of ion-association complexes and the reaction mechanism were also discussed. The effects of foreign substances were tested and it is shown that the method has a good selectivity. Based on HgCl2 and basic triphenylmethane dye, the sensitive, simple and rapid method for the determination of trace CTRX was developed.

研究了适宜的反应条件和影响因素，对离子缔合物的组成和离子缔合反应机理进行了探讨，考察了共存物质的影响，表明方法有良好的选择性，据此发展了用HgCl2和碱性三苯甲烷类染料的灵敏、简便、快速测定痕量头孢噻肟钠的新方法。

Adenosine was used as the raw material, dissolved in triethyl phosphate and then esterified with thiophosphoryl chloride under 0~5℃ for 8h without water and oxgen, in alkaline condition provided by 2,6-dimethylpyridine, introducing thiophosphoryl ester to adenosine.Then superfluous triethylamine was added and reacted under 5℃ for 1h to synthesize rough 5'-AMPS.The unpurified product was appled to a DEAE Sephadex A-25 column and eluted with triethylammonium bicarbonate.

用腺苷为起始原料，溶解于磷酸三乙脂中后，在无水无氧环境中及2，6-二甲基吡啶提供的碱性条件下与三氯硫磷以0~5℃下发生酯化反应8h，将硫代磷酸酯引入腺苷，然后再与过量三乙胺在5℃下反应1h，合成粗产品，再用碳酸氢三乙胺作洗脱液，过DEAE Sephadex A-25凝胶柱纯化。

Sodium bicarbonate is an alkaline salt which can undergo decomposition independently but will only yield sodium carbonate (Na2CO3, also known as washing soda) when heated. However, it produces an undesirable colour and texture when it reacts with fats and is therefore not suitable for use in the production of food.

碳酸氢钠属於碱性盐类，虽然自身也可以热裂解而产生反应，但所须温度高且会产生碳酸钠（Na2CO3，俗称洗涤碱，而与油脂反应产生不良的颜色与口感，并不适宜食品加工用。

Methods:Sparfloxacin sodium was synthesized in alkaline condition with sparfloxacin, and then sparfloxacin sodium react with zinc sulfate to sparfloxacin zinc;Sparfloxacin zinc ointment was prepared with vaseline and lanolin as drug excipient and the concentration of sparfloxacin zinc was analyzed with ultraviolet-visible spectrophotometer;Burn patients were treated with sparfloxacin zinc ointment and other routine techniques.

用司帕沙星做原料，在碱性条件下反应生成司帕沙星钠，司帕沙星钠再和硫酸锌反应生成司帕沙星锌：以凡士林和羊毛脂为基质制备软膏剂，用分光光度法检测主药的含量，以临床烧伤患者为使用对象，司帕沙星锌软膏剂配合其他常规治疗方法治疗烧伤疾病。

1A series ofω-alkylmercapo acid were synthesized by two methods:one involved the reaction of the appropriateω-bromoalkyl acid with mercaptide under the presence of base;the other method was used only for the long alkyl compound by the reaction ofω-alkenyl acid and alkanethiol in the presence of AIBN.

正是基于以上考虑，本论文探索了合成下沿带有硫醚官能团，而上沿带有偶氮官能团的杯[4]芳烃衍生物的方法，进行了以下研究： 1采用ω-溴代羧酸和烃基硫醇在碱性条件下发生反应，或由ω-烯基羧酸和硫醇在AIBN的存在下反应，得到了ω-硫醚羧酸，使用氯化亚砜将羧酸转化为酰氯。

Reduction of 2-bromodifluoromethyl substituted propargyl vinyl ether afforded the difluorovinyl propargyl ether, which rearranged to the corresponding allene bearing a gem-difluoromethene in the mid-aliphatic chain.

第三部分，在碱性条件下，α-氟烷基乙酸乙酯与炔丙醇反应制备了一系列的氟烷基取代的炔丙基烯基醚，并研究了它的Claisen重排反应，得到了2，4-不饱和的氟烷基酮。

10-arylmethylene anthrone pyridine compounds and the raw materials for the reaction conditions, join in alkaline, phase transfer catalysts and acceleration response, KI synthesis of containing pyridine 10,10 - dialkyl anthraquinone.

以蒽酮和含吡啶基的化合物为反应原料，在碱性条件，加入相转移催化剂和KI加速反应的进行，来合成含吡啶基的10，10-二烷基蒽酮。

SMA staining was positive in basophilous small blocks, spindle or irregular cell cluster. Of the 218 cases, 56 cases had smooth muscle. S-100 staining demonstrated that neurofilament protein and adipocytes were positive. Of the 218 cases, 44 cases had adipose tissue.

平滑肌肌动蛋白染色显示嗜碱性的小团状、梭形或不规则形的细胞束呈阳性反应，证明为平滑肌，218例中56例显示了平滑肌的存在。S-100染色神经纤维丝及脂肪细胞均呈阳性反应，218例中44例有脂肪组织。

Reaction coordinate calculations show that for all of these phosphodiesters the alkaline hydrolysis follows a one-step bimolecular mechanism initialized by the attack of hydroxide ion at the phosphorous atom of the ester.

反应坐标计算表明所有这些磷酸酯的碱性水解均遵循一步历程双分子反应机理，磷酸酯的水解由氢氧根对酯上的磷原子的亲核进攻开始。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。