硼

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。

Work 工作:(1) feasible process development for high-pure tetraalkyphosphonium salt as catalysts for polymerizations, potential sale 2-4 million us$;(2) simple and feasible preparation process for phosphonium salt as ionic liquids, biocides and phase transfer catalysts;(3) new and industrially feasible processes for highly sterically hindered alkylphosphines as catalyst ligands, these include tricyclohexyl-phosphine, phosphorinanes and dsmphos2,3- bis(9-phosphabicyclononylbutane;(4) sterically hindered dialkylphosphinic acid as new generation of co/ni extractant;(5) alkylphosphonium wittig reagents and the wittig reactions with them;(6) exploration of the application of borane chemistry in the synthesis of highly sterocally hindered organophosphines;(7) customer preparation of samples of a variety of organophosphorus compounds for customers all over the world.

用作高分子聚合反应催化剂的高纯度四烷基瞵盐的实用生产流程。产品销售前景 2-4 百万美元；(2)用作离子化液体，杀菌剂和相转移催化剂的烷基瞵盐的简单实用合成方法；(3)高位阻烷基磷化氢催化剂配体的工业实用合成路线的研究，这包括，三环己烷基磷， phosphorinanes 和 dsmphos 2，3-bis(9-phosphabicyclononylbutane ；(4)高位阻二烷基膦酸金属萃取剂的工业实用合成路线的研究；(5)烷基膦 wittig 反应试剂的研究；(6)硼化学在高位阻烷基磷化氢合成中的应用；(7)为世界各地提供顾客合成服务。

The form of borate existing in the brine containing boron can be expressed as the comprehensive statistic one of tetraborate.

总结了硼酸盐水溶液中各种硼氧配阴离子的FT-IR，Raman和NMR的归属。

The result of hydrochloric acid-pH titration for the boron-containing concentrated brine demonstrated that the form of borate in the brine is existed as "comprehensive tetraborate".

用盐酸－pH滴定浓缩盐卤中硼酸盐的结果表明，盐卤中的硼是以&四硼酸盐&的综合统计形式存在。

In chapter 5,several novel fluorescent dyes based on perylene tetracarboxylic diimides were prepared by a catalytic nucleophilic addition of an activated methyl group to carbonyl group.

第四章：以无水氯化锌为催化剂，将含活泼甲基的2-甲基喹啉连接到PDI单元的酰亚胺N的位置，合成了两个含PDI单元和硼氟荧光体单元的新颖荧光染料。

Tetra-(8-hydroxy-quinolinato) boron complex with tetrahedral-like geometry and 3,3',4,4'-benzophenone tetracarboxylic anion with long-chain structure were successfully intercalated into layered double hydroxides with ion-exchange method.

我们首次选择了两种具有不同构型的光活性物种作为客体，即：具有四面体构型的四-(8-羟基喹啉)硼配合物和具有长链形状的3，3′，4，4′-苯酮四羧酸，得到了两种新的有机无机杂化光功能材料。

The pyrolysis products of Tilia amurensis lignin treated by boron compounds and/or phosphates were analysed by pyrolysis-gas chromatography-mass spectroscopy.

采用裂解－气相色谱－质谱联机分析技术，研究了含硼及磷的化合物对紫椴木质素热解产物组成的影响。

A laboratory test was conducted to add small amount of fluorite,boryte,iron-manganese ore and boron mud to vanadium titanomagnetite concentrate sinter mix and to investigate the effect of SiO_2/TiO_2 variation on the sintering process and sinter metallurgical properties.

探讨了实验室条件下，在钒钛磁铁精矿烧结混合料中添加少量萤石、重晶石、铁锰矿、硼泥等辅料及改变SiO＿2／TiO＿2对烧结过程和烧结矿冶金性能的影响。

The titrimetric determination of TTPC has been studied by using sodium tetraphenyl boronate.

研究了用四苯硼钠滴定法测定季鏻盐含量的新方法。

Tourmalines occur in metaleucogranulite, tourmalite and boron orebodies.

电气石就产在含电气石变粒岩、电英岩及硼矿体中。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷