酰化

The optimum reaction conditions are as follows: diphenylmethanethiol : methyl chloroacetate is 1:1.5, and the reaction carried out at 100℃ for 4 h, 2- acetamide can be carried out in the room temperature for 20 h, the yield of 2- acetamide was 76%, hydrogen dioxide: 2- acetamide is 1:1, and the reaction carried out at 60℃ for 3 h, the yield of modafinil was 79%, the total yield of reaction can be reached 48%.

研究表明，采用氯乙酸甲酯作为醚化试剂，反应时间4h，反应温度100℃，二苯甲硫醇：氯乙酸甲酯=1：1.5，室温下氨解反应20h，二苯甲硫乙酰胺收率76%；采用过氧化氢作为氧化试剂，反应时间3h，反应温度60℃，过氧化氢：二苯甲硫乙酰胺=1：l，莫达非尼收率79%，反应总收率可达48%。

Dendritic p-t-butylcalix arene amide derivatives with terminal amino groups of the first and second generations were synthesized from the ammonolysis of ethyl calixylacetate with 1, 6-diaminohexane and Michael addition of methyl acrylate. Their structures were confirmed by IR, 1H NMR.

通过扩散法，采用氨基对丙烯酸甲酯的Michael加成反应和酯基的酰胺化反应交替进行，合成了4种树枝型对叔丁基杯芳烃酰胺衍生物(n=6，8)。

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料，通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚，随后经低价钛还原偶联，没有生成正常的分子内羰基-羰基偶联产物，而是得到反常的羰基与α，β-不饱羰基的双键偶联产物，较高收率地得到了含多官能团的CycI[3，2，2]azine衍生物。

The biodegradation behaviors of six kinds of fatliquors have been researched including sulphated castor sulphated neatsfoot oil, sulphated fish oils, lecithin, chlorinated paraffin and alkyl sulfonyl chloride.

基于活性污泥处理，对制革生产中6种典型加脂剂（硫酸化牛蹄油、硫酸化蓖麻油、硫酸化鱼油、卵磷脂、氯化石蜡和烷基磺酰氯）的生物降解特性进行了系统研究。

In this contribution novel acid-base sulfonated poly(phthalazinone ether nitrile ketone)s membranes are introduced.The membranes are composed of SPPENKs as the acidic compounds,and polyetherimide as the basic compounds,furthermore,redissolving SPPENKs and PEI in N-methylpyrrolidone then cast directly onto clean glass substrates in dust free environment at 60℃ aiming at enhancing membrane toughness and other relative properties.

以合成的一系列不同磺化度的碘化聚芳醚腈酮为acidic聚合物，以聚芳醚酰亚胺为basic聚合物，并将其溶解在 N -甲基-2-吡咯烷酮中配成质量分数为10%的成膜液，60℃下刮制成膜，制得acid-base型磺化聚芳醚腈酮质子导电了聚合物膜。

acetyl chloride, a novel fluorescence derivatization reagent, has been developed for the determination of sterols and stanol .

采用荧光衍生化试剂2-(9-咔唑)乙酰氯，对天然产物谷甾醇、豆甾醇、菜油甾醇及谷甾烷醇的柱前衍生化条件，包括催化剂的种类、反应温度、衍生化时间等进行了考察，结果表明：催化剂选用三乙胺，反应温度80℃，时间20min，衍生产物具有恒定的最大检测响应值。

The paper reviews the advanced progress in the application of ionic liquids as reaction medium as well as catalysts to organic synthesis, mainly including coupling reaction, Michael addition, Baylis-Hillman reaction, Diels-Alder reaction, Aldol reaction, Knoevenagel condensation, cyclorization reaction, alkylation and acylation, oxidation and reduction etc.

综述了离子液体作为反应介质或催化剂在有机合成传统反应类型中的最新研究成果，主要包括：偶联反应、Michael加成、Baylis-Hillman反应、Diels-Alder反应、Aldol缩合、Knoevenagel缩合、环化反应、烷基化及酰基化反应和氧化还原反应。

The result of potassium malonyloxyborohydride as a new hydroboration reagent reacts with terminal alkenes and alkynes is described.

介绍新的硼氢化试剂丙二酰氧基硼氢化钾与链端烯炔烃的作用，烯烃的硼氢化物在PTC条件下，插入∶CCl2 ，可得饱和羧酸；炔烃则难以与之硼氢化。

Furthermore, proton singlets of Fmoc group were treated as internal standard because of their station in both starting material and product.

用HR／MAS NMR分析技术不仅跟踪优化了固相羟基氨基酸的糖基化反应条件，而且选择固载在树脂上的糖基化Nα-Fmoc保护羟基氨基酸〓H NMR中最低场，且分辨好的Fmoc保护基信号做为内标，糖上乙酰基的积分面积为标准直接定量了键合在Tenta Gel S NH〓树脂上氨基酸甙化的产率。

Malonyloxyborohydride,a hydroboration reagent,is prepared by reaction of malonic acid and sodium borohydride,and is used to react with dihydromyrcene in THF.

用一种硼氢化试剂———丙二酸与硼氢化钠反应生成的丙二酰氧基硼氢化钠在THF中与二氢月桂烯反应制备香茅醇。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐