氧化合物

On the basis of our preceding work. the asymmetric ring-opening reaction of epoxides using dithiophosphorus acids as nucleophiles was further studied.

在本课题组已有工作的基础上，我们对磷试剂参与的环氧化合物的不对称开环反应进行了进一步的研究。

The application of them as catalysts in the asymmetric ring-opening of epoxides was investigated. Through the screening of the catalysts, we found that some of them demonstrated good asymmetric induction ability in this reaction.

我们对非手性二硫代磷酸在手性Schiff碱和Ti〓的存在下对环氧化合物的不对称开环反应进行了研究，对手性Schiff碱进行了进一步的筛选。

Seven major methods and their reaction characteristics for the synthesis of primary vicinal diamines starting from epoxides, and alkenes etc.

文摘：详细综述了从环氧化合物、烯烃等为起始原料合成一系列一级邻二胺的七条主要路线，并比较了各条反应路线的特点。

The preparation of epoxides by reaction between alkyl peroxides and olefins catalyzed by high-valent transition metal complexes is one of the most important means of preparation of epoxides.

以高价过渡金属配合物为催化剂，催化烯烃直接环氧化反应是合成环氧化合物的重要途径之一。

Epoxides are one of the most important organic intermediates that have been found applications in synthesis of many products such as pesticide, enantioselective drugs, plastic, paints, rubber promoters and polyester.

环氧化合物是一类非常重要的有机化工原料和中间体，目前己广泛应用于农药、药物、增塑剂、阻燃剂及不饱和聚酯等众多领域。

Aremco says that this advanced coating exceeds the temperature limitations of conventional epoxies, phenolics and silicones and can be used in applications as high as 1427C.

Aremco公司称，这种先进的涂层的极限使用温度超过传统的环氧化合物或酚醛合物和硅酮等，并且可以在高达近1427℃使用。

Our resultssuggest that to understand the magnetic properties of manganites,the simple DEmodel needs to be further modified.

这个结果表明，为了理解锰氧化合物的低温磁学性质，还需要对简单的双交换模型进行修正。

He says the extra nitric oxide repaired the ability of red blood cells to expand blood passages.

这额外的氮氧化合物修复了血红细胞扩充血管通道的能力。

By analyzing the temperature dependence of electric resistivity, it is indicated that the variable-range hopping process of polarons dominates the transport behavior at temperatures above T〓.

对于锰氧化合物的CMR效应，虽然在机理的认识上至今仍没有达成一致，但一般认为双交换作用和Jahn-Teller极化子是两个基本的因素，同时各种相互作用竞争造成的相分离状态是不可忽视的过程。

In the last part,some possible new properties in doped manganese-oxides,such-as the non-Fermi liquid behavior at very low temperature and the possibility of thesuperconducting pairing of composite polarons are suggested.

在第三部分第八章，我们提出了一些在锰氧化合物中值得探索的新问题，如低温下的非费米液体行为和复合极化子配对成超导体的可能性，并展望了CMR材料的研究和应用前景。

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！