配基

That is encouraging for palladium-catalyzed allylic substitution reactions which is difficult to use in industry due to the current low reactivity of catalysts.

而且，值得注意的是这类配体的反应活性都非常高，对于由于催化剂活性低难以在工业上应用的钯催化烯丙基取代反应来说，这无疑是一大喜讯。

Application of 1, 1'-Planar chiral P, N -ligands into palladium-catalyzed allylic substitution

1， 1'-平面手性二茂铁膦氮配体在钯催化烯丙基取代反应中的应用

This paper reviews the recent advances in synthesis of chiral allylic amines, mainly discussing the effects of ligands on chemo-and regio-selectivities.

综述了近年来手性烯丙基胺的合成进展，重点介绍了催化剂配体对化学选择性和对映选择性的影响，并阐述了各种类型的反应机理

Synthesis and application of 1, 1'-ferrocene P, N -ligands in enatio- and regio-selective palladium-catalyzed allylic substitution reactions

1， 1'-二茂铁膦氮配体的合成及其在不对称区域选择性钯催化烯丙基取代反应中的应用

This thesis focused mainly on studying the role of planar chirality in asymmetric catalysis, synthesizing novel ferrocene ligands and applying them to palladium-catalyzed allylic substitution reactions.

本论文主要是研究二茂铁平面手性在不对称催化反应中的作用，设计合成新型二茂铁配体及其在钯催化烯丙基取代反应中的应用。

The preparation of MBPA, BMBPA and NS amide compounds have not been reported in literature.

MBPA，BMBPA和两种含有酰胺基的NS二齿配体的合成尚无文献报道。

The formation situation of the band for transition metallic carbonyl cluster compounds is analysed with the bond valence formula for atomic cluster compounds.

本文运用原子簇化合物键价计算公式，对过渡金属羰基簇合物成键情况进行了分析，利用金属键轨道数，价非键轨道数和金属配体成键轨道数计算簇合物价轨道总数。

The purpose of the present invention is to solve the problem of misfit stress in metal base composites.

本发明的目的是为解决已有金属基复合材料存在的热错配应力问题。

This company produces stops itches the scented soap, uses the SOD biological activity material hyperoxide mutase, blends the Chinese medicine extraction to stop itches the factor, the bee glue, the honey and so on, can the effective elimination in vivo ultra oxygen anion free radical, anti-fade the factor.

本公司生产的止痒香皂，采用SOD生物活性物质超氧化物歧化酶，配伍中草药提取止痒因子、蜂胶、蜂蜜等，能有效的清除体内的超氧阴离子自由基，抗衰因子。

This company produces stops itches the scented soap, uses the sod biological activity material hyperoxide mutase, blends the chinese medicine extraction to stop itches the factor bee glue, the honey and so on, can the effective elimination in vivo ultra oxygen anion free radical, have the unique effect to the old age skin pruritus, after taking a bath, can cause the skin moisturizer not dry, not to stimulate the skin, not to have the unusual smell, can protect the skin, the crisp body effectively, causes the skin to achieve the acid-base equilibrium, to stop itches, the sterilization, run skin's function, is the senior citizen bathes daily the skin care standing-by wash thing.

止痒香皂，采用 sod 生物活性物质超氧化物歧化酶，配伍中草药提取止痒因子蜂胶、蜂蜜等，能有效的清除体内的超氧阴离子自由基，对老年皮肤瘙痒症有独特功效，洗浴后能使皮肤保湿不干燥、不刺激皮肤、无异味，能有效呵护皮肤、爽身，使皮肤达到酸碱平衡、止痒、杀菌、润肤的作用，是老年人日常沐浴护肤的常备洗涤用品。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。