合成

Large single crystals of many AlPO〓 or SAPO molecular sieves such as AlPO〓-41, AlPO〓-11, AlPO〓-CJ2, AlPO〓-5, SAPO-47, SAPO-11, and SAPO-31 was easily synthesized using normal synthesis method.

如AlPO〓-41、AlPO〓-11、AlPO〓-5、SAPO-47、SAPO-11、SAPO-31、AlPO〓-15、AlPO〓-CJ2、NKX-19、NKX-20。其中NKX-19、NKX-20为新合成化合物，AlPO〓-41分子筛单晶属于首次合成，AlPO〓-CJ2、AlPO〓-15是在不加任何有机模板剂的情况下合成的。

The feasibility of the new way is also proved, In the technics improvement process of scopoletin, the selective demethylation reaction is performed in the lithium chloride-N, N-dimethylformamide system under microwave irradiation.

同时，我们在东莨菪素的合成工艺研究中，采用了LiCl-DMF-MWI体系进行脱甲基反应，整个合成路线反应时间短，收率明显提高，后处理简单易于操作，使得药物合成更加绿色环保和具有实用价值。

A few spiro ligands have been successfully synthesized and applied in asymmetric catalysis .

手性螺环配体的合成及其在不对称催化反应中的应用是不对称合成和催化研究中重要的研究领域之一，一些手性螺环配体被合成出来并成功地应用于不对称催化反应中。

To further testify the high efficiency of these new reagents in the synthesis of sterically hindered peptides, we successfully synthesized the extensively -N-methylated peptide moiety of the antineoplastic and lipophilic depsipeptide Dolastatin 15 using reagent BEP and FEP. We also synthesized the highly hindered tetrapeptide segment of Cyclosporin A using reagent BEMT and BEP, respectively.

为进一步检验这类吡啶正离子型缩合剂在有空间位阻的多肽合成中的性能，我们以BEP和FEP为缩合剂，成功地合成了具有抗肿瘤活性的亲脂性酯肽Dolastatin 15分子中高N-烷基化的肽链部分；分别以BEMT和BEP为缩合剂合成了生物活性肽Cyclosporin A中空间位阻最大的四肽片断。

Benzoylated phenyl a - and B - 2 - thio - D - fructofuranosides were synthesized and coupled with protected sucrose acceptor to synthesize a - D - fructofuranoside - linkage stereospecifically by employing NIS/AgOTf as catalysts.

在果糖的合成研究中，合成了四苯甲酰基苯基果糖硫苷，并首次将其用作糖苷化反应的给体，在NIS/AgOTf的促进之下，与乙酰化保护的蔗糖受体反应，从而以高产率立体专一地合成了α构型的呋喃果糖苷。

The side chain of thioacetic acid has been sythesized from the material of acetic acid via four steps, then synthesized the key intermediate of 2-hydroxypenem via displacement, P〓induced cyclization and hydrolyzed reaction from the material of azetidinone.

以羟乙酸为原料，经四步反应合成了侧链化合物硫基取代的羟乙酸，发生取代反应导入到经七步合成的单环氮杂环丁酮中，然后发生酰化，Wittig诱导环化，水解等五步反应合成关键中间体2-羟甲基青霉烯。

Based on literature procedures, a dithiol tridentate ligand containing amino groupand its iron carbonyl complex (4) are synthesised and characterised. An attempt isalso made to protonate this complex.

在文献方法的基础上也合成了含有氨基的二硫醇三齿配体及其铁羰基化合物[Fe_2(SCH_2)_2C(CH_2NH_2)_5](4)的合成与表征，尝试了合成该化合物的质子化产物。

In this article,the tripeptide RGD is synthesized by the method of liquid synthesis .

采用液相合成法合成了RGD 三肽并对其进行了生物活性检测，证实用液相合成的 RGD 短肽具有促进材料与内皮细胞粘附的生物活性。

It is involved in the synthesis of triphenylcarbinol. In this pater, based on the principle of the ultrasonic wave radiation and its advantages, triphenylcarbinol was synthesized by ultrasonic irradiation. We have researched the influence on the synthesis of triphenylcarbinol for the solvent of different purity.

三苯甲醇的制备中就涉及到了格氏试剂的合成，本文根据超声波辐射作用的原理及其优点，利用超声波辐射法合成了三苯甲醇，考察了不同纯度的乙醚溶剂对产物合成的影响。

First, the geometry optimization for 1-phenyldibenzophosphole and triphenylphosphine were carried out using quantum chemical AM1 method.

用量子化学AM1方法优化了1-苯基二苯并膦和三苯基膦的几何构型，比较了两种化合物的电子结构和空间结构，发现PDBP作为羰基合成铑膦催化剂的配体要优于三苯基膦；系统研究了PDBP的合成方法，其最佳合成条件为：在无水无氧的条件下，采用二乙胺锂与溴化四苯基膦摩尔比为3，反应温度为22 ℃，反应5 h，反应后酸化， pH值为1～2，产物收率可达到85％～88％。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失