烯丙基

The preparation of potassium malonyloxyborohydride in situ and its seletive hydroborating alkene are described.

介绍了丙二酰氧基硼氢化钾的制备及其原位与烯烃的选择性硼氢化。

The annulation of stilbene compounds were studied. Phenanthrene derivates-interme diates of tylophorine were synthesized by annulation from-2,3-bis(3,4-dimethoxyphen yl)acrylic acid and-2,3-bis(3,4-dimethoxyphenyl) acrylonitrile with phenyliodine diace tate as a friendly and high efficient catalyzer.The route was first reported, whose application foreground would be promising.The catalyzer will be used to study of synthesi- zing a series of new phenanthrenes.

本文还探索了简单类化合物关环反应，并研究出用廉价高效对环境友好的催化剂-二乙酸碘苯成功地将类化合物－3，4-二甲氧基-α-(3，4-二甲氧苯基)-肉桂酸和-2-(3，4-二甲氧苯基)-3-(3，4-二甲氧苯基)-丙烯关环形成相应的菲环衍生物－娃儿藤碱重要中间体，此方法在国内尚属首次，具有重要的应用价值，此外可用此催化剂研究一系列类化合物的关环反应。

Monomeric acrylamide is a water-soluble, vinyl monomer that is used primarily to produce polyacrylamides which widely used as binding agent, thickening agent or bibulous in different industry such as wastewater treatment, petroleum extract, paper making, mining, medicine.

丙烯酰胺(Acrylamide，ACR)是一种水溶性的、乙烯基单体，主要用于生产聚丙烯酰胺，后者可作为良好的凝结、增稠、吸水剂，广泛用于废水处理、采油、造纸、纺织、皮革、采矿、医药等行业。

Compared with TEA,TiBA activated system produced more blocky copolymer,but the blockiness of its block fraction is lower.

与三乙基铝相比，三异丁基铝为助催化剂得到的不溶级份含量及丙烯含量都较高，但其嵌段性却较低。

Furthermore, the important fragment which is composed of pentenyl cinnamic acid and D-Tyrosine, and the ester which is composed of L-N-methylated phenyl amino acid and diketopiprazine was synthesized with considerable yield The conjugation of the new DOPA analogue into the peptide in the total synthesis of Pepticinnamin E was investigatited

另外，本文作者还进一步合成了高收率的戊烯基肉桂酸衍生物与D-酪氨酸的缩合片段及L-N-甲基苯丙氨酸与哌嗪二酮的酯两个重要的结构组成部分；对新多巴衍生物片段嵌入肽链中的工作亦进行了有益的尝试。

New composite sorbents for separating estrone were synthesized with the monomers of acrylamide and p-vinylbenzoic acid using estrone as the template.

以雌酚酮为模板剂，以丙烯酰胺和对乙烯基苯甲酸为单体合成出用于分离雌酚酮的新型复合吸附剂。

The main compounds in the natural terpineol oil were eucalyptol, trans4thujanol, pisopropenyl toluene, cis4thujanol, linalool, camphor, borneol, 4terpineol,αterpineol and safrole.

天然松油醇粗油中主要成分是1，8桉叶素、反式4艹守醇、p异丙烯基甲苯、顺式4艹守醇、芳樟醇、樟脑、龙脑、4松油醇、α松油醇和黄樟素。

Bromopropane is produced from hydrogen bromide and propene in the presence of catalyst by free radical addition process.

丙烯与溴化氢在催化剂作用下，进行自由基加成反应生产1-溴丙烷。

A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl-ester derivatives thereof; or inertly substituted derivatives of the foregoing.

一种用于丙烯聚合的催化剂组合物，所述催化剂组合物包括：一种或多种齐格勒-纳塔主催化剂组合物，该主催化剂组合物包括一种或多种过渡金属化合物和一种或多种芳族二羧酸酯内部电子给体；一种或多种包含铝的助催化剂；选择性控制剂，该选择性控制剂包括至少一种包含硅的化合物，该化合物包括至少一种与硅原子连接的C 1-10 烷氧基；和一种或多种活性限制剂化合物，该活性限制剂包括一种或多种脂族或脂环族的单或聚羧酸类、其烷基-、环烷基-或烷基-衍生物、或上述惰性取代的衍生物。

In chapter four molecular modeling method is employed to comparatively study five S-allyl γ-hydroxy ketene dithioacetals reactions of Thio-Claisen rearrangement with and without zeolite catalysts.

第四章用分子模拟途径研究了在有、无分子筛催化条件下五种丙烯基羟基乙烯酮二硫代乙缩醛Thio-Claisen重排反应。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新