合成地

Some products included methoxy group, naphthyl and heterocyclic aromatic moieties, and some were borne with two 1-propynyl groups. It is more important that compounds bearing halogens were also synthesized via this protocol.

运用此法不仅合成出一些含有醚键、萘环、杂环以及含有两个1-丙炔基的化合物，重要的是芳环上含有卤原子的化合物也能顺利地合成出来。

A potential approach to this problem is to make use of a natural defense mechanism called " the stress response," which is characterized by a transient down - regulated synthesis of nonvital cellular proteins and increased production of endogenous protective factors known as heat shock proteins that act to allow proper refolding of proteins denatured by the incipient injury.

应激反应的特征是一过性下调细胞非必需蛋白的合成及增加被称为热休克蛋白的内源性保护因子的合成。热休克蛋白作用是促使损伤导致变性的蛋白适当地再折叠。HSP家族中HSP70被认为在细胞保护中发挥重要作用。

Finally the application of the homemade ODS for MSPD and the economical availability of the product was evaluated. Results show as the following: 1. It is a simple method for the preparation of a bonded octadecyl phase which has large particle and high extent of coverage of the bonded phase.

研究结果表明：①采用大粒径无定形硅胶为基质，选择十八烷基三氯硅烷为硅烷化试剂，完整地合成了一种大颗粒、高表面积的ODS键合相，合成的ODS可作为基质固相分散MSPD的固相分散剂，用于样品的前处理。

The osmium-catalyzed asymmetric dihydroxylation of olefins provides one of the most effective methods for the preparation of vicinal diols. Almost all kinds of olefinic substrates can be transformed to the corresponding diols by means of AD reaction. The chiral osmium catalyst is generated in situ by the chiral ligand complexing with OsO〓 in the reaction.

手性锇催化剂催化的烯烃不对称二羟基化反应是合成手性邻二醇最有效的途径之一，可以将几乎所有类型的烯烃转变成相应的手性邻二醇，因此广泛地应用于药物、天然产物以及精细化工产品的合成。

And we got an aluminogermanate KAlGe〓O〓 and a borogermanate LiBGeO〓, whose structures are analog to paracelsian and cristobalite respectively.

研究了含铝、硼、锌等金属锗酸盐的合成，以碱金属离子作为结构导向剂成功地合成出铝锗分子筛KAlGe〓O〓和硼锗分子筛LiBGeO〓，其拓扑结构与长石Paracelsian和方石英的结构类似。

Highly ordered SBA-15 sieves have been successfully synthesized in a low concentration liquid inorganic acid medium via the addition of small amounts of phosphomolybdic acid.

通过在低浓度无机液体酸介质中添加少量磷钼酸，成功地合成了高度有序的SBA-15介孔分子筛。N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明：用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间，同时反应产物SBA-15在100℃的水中处理72h后仍然保持六方有序的介孔结构

In addition, two water-solublephosphonic acid derivatives of C〓 and two diadducts of phosphonate derivative of C〓were also prepared. All the four compounds can be dissolved in DMSO, which is asolvent easy to be soluble in water. Their DMSO aqueous solution could haveprospective applications in the field of biomedicine.

研究了富勒烯膦酸酯衍生物的水解反应，首次合成了两个水溶性富勒烯膦酸衍生物，另外还合成了两个二加成的富勒烯膦酸酯衍生物，这四个衍生物均能很好地溶解在和水互溶的DMSO中，它们的DMSO水溶液可能在生物医学研究中可能会有很好的应用价值。

The as synthesized samples were characterized by XRD. The results show that a single phase compound Gd2Zr2O7 with a cubic pyrochlore structure is successfully synthesized at 5.2 GPa pressure and 1 873 K temperature with 30 min holding time.

通过XRD对合成样品进行了结构表征，结果证实，在5.2 GPa和1 873 K条件下，保温保压30 min，成功地合成出单一物相的、具有立方烧绿石结构的Gd2Zr2O7化合物。

The influences of conditions, such as the different elements in A site, reaction temperature and the reoxidation time etc.on partial catalytic oxidation of AFeO 3 catalyst are reviewed. The results show that the lattice oxygen from AFeO 3 pervoskite catalyst in A site occupied ...

结果表明，稀土金属(La ，Nd ，Sm ，Eu)占据A位的AFeO3钙钛矿型催化剂中的晶格氧适于甲烷选择性氧化制合成气，在完全氧化的LaFeO3催化剂上存在少量的强氧化性氧物种，通过控制再氧化条件，可使CH4 在LaFeO3催化剂的作用下，高转化率(～ 92 %)、高选择性(96 %)地生成合成气。

Chiral 3 methy 1,4 butanediol and its derivatives are the important intermediate of synthesis of chiral smectic liquid crystal polyesters and chiral natrual products with biological activity. In the paper, a new efficient route of 3 methyl 1,4 butanediol and its two derivatives, 2 methyl 4 tetrapyranyloxy 1 butanol and 2 methyl 4 tetrapyranylbutanal, was described, and the target products were synthesized by employing asymmetric hydroboration oxidation improved.

手性2－甲基－1，4－丁二醇及其衍生物是合成各种手性近晶型液晶材料以及手性天然生物活性物质的重要中间体，以3－甲基－3－丁烯－1－醇为原料利用改进的不对称硼氢化－氧化反应，成功地合成了－2－甲基－1，4－丁二醇以及其2种手性衍生物：－2－甲基－4－四氢吡喃氧基－1－醇和－2－甲基－4－四氢吡喃氧基丁醛。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！