OBJECTIVE To synthesis 5-bromide benzofuran ketone,the key intermediate of citaopram.

目的合成抗抑郁药西普兰中间体5-。

Trimethylaluminum(TMA),usually used in organic catalysis and organic synthesis,was synthesized by reaction of triethylaluminium (TEA) with methyl bromide on iron-stibonium complex catalyst.

新的催化体系(铁-锑复合催化剂)催化三乙基铝(TEA)与甲烷进行烷基交换反合成三甲基铝(TMA)。

119.0 g of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

119克环戊和19.4克镁在空气中或者四氢呋喃中加入环戊格林尼亚试剂作发生反。

Methods Infrared spectrophotometry with potassium bromide tabletting was adopted,in which the extract was carried out with the absolute alcohol as the solvent.

方法以无水乙醇为溶剂进行提取,采红外分光光度法(化钾压片)进行定性鉴别。

TEM, ethidium bromide displacement assays, agarose gel electrophoresis and SAXS studies support the formation of lipoplexes for the transfection of CHO cells.

【文献摘要】A new transfection reagent based on nucleoside phosphocholine amphiphile leading to high transfection efficacy and low cytotoxicity is described.

Bromobutyraldehyde ethylene acetal was synthesized from crotonaldehyde by addition with hydrogen bromide and then acetalation with ethylene glycol with an overall yield of 80.

巴豆醛先与化氢加成,再与乙二醇缩醛化得到3-丁醛缩乙二醇,收率80.8%。

The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

乙酮和苄为烷基化试剂,以高产率和100%的转化率以及100%的选择性得到了酚的O-烷基化产物。

Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.

向次酸钠溶液中滴加适量的丙酮,在四丁基化铵催化下,高产率得到四化碳。

By 52%-54% denisty indicator of lithium bromide, it is used to be absorptive refrigerant, hypnagogue and mitigative of medicine, and also to be electrolyte in ion-battery.

52%-54%浓度的化锂作吸收式制冷剂。在医药中，作催眠剂和镇静剂。还作锂电池的电解质。

Through the research on petroleum and nature gas, design a multi-source heatpump of single and double effect lithium bromide, the two stage heatpump unit, process of nature gas liquefaction etc.

通过对石油天然气物性的研究,利热泵机组的特点,设计多源单效制冷供热热泵机组、双效热泵机组、双级热泵机组及天然气液化流程。

The paper studied the preparation of bromine from basic Magnesium bromide in the production of maltol and ethyl maltol, the synthesis of bromethyl from bromine, sulfur and alcothol.

研究了以麦芽酚、乙基麦芽酚生产中的碱式化镁废渣为原料制取;以、硫和乙醇合成乙烷的方法。