查询词典 phosphine

The addition reactions with phosphine anion andthe CsF promoted Strecker reactions were chose to evaluate the relationship of thesetwo chiral groups in the diastereoselective additions of the imino group.

通过亚磷酸负离子的加成反应和CsF促进下的Strecker反应研究了这两个手性基团的不对称诱导的匹配情况。

Goodcatalytic activities of the phosphine palladium complexes were observed incarbonylation of benzyl chloride with atmospheric CO. In some reactions the yieldof phenylacetic acid was 91% and the catalyst could be reused repeatedly in severaltimes.

这些钯配合物催化苄基氯的常压羰基化反应有较好的催化活性，有些反应中苯乙酸的产率可达91％，可重复使用，是一类环境友好的新型绿色催化剂。

A series of neutral organophosphorus compounds including trialkylphosphates,dialkyl alkylphosphonate,alkyl dialkyI phosphinate,trialkyl phosphine oxide andalkyl esters of phosphorus acid have been separated by reversed phase chromatographyon acetylated paper.

一般中性磷化合物(磷酸三烷基酯、烷基瞵酸二烷基酯、二烷基瞵酸烷基酯、氧化三烷基瞵、亚磷酸二烷基酯及亚磷酸三烷基酯)皆能借乙酰化滤纸为固定相，进行纸上层析分离鉴定。

In addition, the new phosphine-catalyzed cyclization reactions of dimethylacetylenedicarboxylate and methyl propiolate with N-tosylimines are also described.

发展了膦催化下丁炔二酸二甲酯和丙炔酸甲酯与贫电子亚胺的环化反应，这对2-炔酸酯的反应又是一个补充，进一步丰富了膦催化下贫电子炔烃的反应化学。

In this mechanism, a phosphine ligand in the Ru hydride complexes is replaced by protonic solvent ROH to generate the chain carrier.

三、反应机理论文提出，在固载Ru基催化剂上的scCO〓加H〓生成HCOOH的反应中，CO〓的活化在Ru配合物的作用下，以反插入Ru-H键，生成金属-羧酸配合物的形式进行。

The studies on mixture fumigation of phosphine with carbon dioxide to control Sitophilus oryzae and Sitophilus zeamais were carried out at three different temperature 35℃、40℃and 45℃.

本实验在 35℃、 4 0℃和 4 5℃ 3个不同温度条件下用磷化氢和二氧化碳混合熏蒸防治玉米象和米象。

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 mathematical models of dynamics for the chemical reaction of methanol and trichloro phosphine and the reactors were established by the study of thermodynamics and dynamics.

实验考察了工艺配比、反应温度、压力、反应时间等工艺参数及工艺设备结构等因素对产品收率和质量的影响。

Also, the type of dispersion of four gasliquid-liquid systems: air-decane-aqueous solution of sodium sulfite and surfactant, airmixture of decane and dodecene-aqueous solution of rhodium complex, ligand, and surfactant, air-mixture of decane, dodecene and tridecyl aldehyde-aqueous solution of rhodium complex, ligand and surfactant, and air-mixture of decane and dodeceneaqueous solution of trisodium salt of tri (m-sulfophenyl) phosphine, and surfactant is determined by electric conductivity.

本文采用电导率测量的方法实验研究了空气—正癸烷—亚硫酸钠和十六烷基三甲基溴化铵水溶液、空气—正癸烷和1-十二碳烯混合物—铑膦络合物催化剂和十六烷基三甲基溴化铵水溶液、空气—正癸烷、1-十二碳烯和十三醛混合物—铑膦络合物催化剂和十六烷基三甲基溴化铵水溶液、空气—正癸烷和1-十二碳烯混合物—三间磺化苯基膦三钠盐和十六烷基三甲基溴化铵水溶液四个三相体系的液液分散特性。当有机相与水相体积比分别为7／3、1／1和3／7时，前三个体系均形成水包油型分散，并有稳定的乳状液生成。

In this study, the critical point data of ternary systems which is composed of supercritical carbon dioxide, trisodium salt of tri-(m-sulfonphenyl)phosphine and cosolvent were measured the first time. With the increase of mol% of the cosolvent, critical temperature of ternary system increased, and the experimental data show a linear dependence of critical temperature with mol% of the ternary system over the concentration ranges studied too.

北京化工大学硕士研究生论文本文还首次测试了在超临界CO：中加入三磺化三苯基麟以及共溶剂组成的三元体系的临界点数据，发现三元体系中临界温度也随共溶剂的浓度增加逐渐增加，呈一种线性关系。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。