氯苯

In stead of using butyl nitrite and absolute ethyl-ether as reagents,in an improved method,cupferron.

本文介绍了亚硝酸乙酯代替亚硝酸丁酯,用氯代替无水乙醚合成铜铁试剂新工艺。

Nitrodiphenylamine is synthesiized by direct condensing method,adsopting aniline and 2-nitrochlorobenzene as feeds,PEG as phase transfer catalyst.

、邻硝基氯为原料,采用直接缩合法引入相转移催化剂合成邻硝基二。

Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%.

氯和邻二甲酸酐为起始原料，经四步工序合成马哚，总收率为23．4％。

In addition, the subjects who took guanfacine had significantly more somnolence, lightheadedness, and dry mouth than those who took placebo.

另外，服用氯乙胍比服用安慰剂有更明显嗜睡、头昏、口干等症状。

Four kinds of methods to synthesize o-Dichlorobenzaldehyde were introduced. the advantages of hydrolysis methods to reduce p-toluene sulfonyl chloride were discussed.

主要介绍了四种二氯甲醛合成工艺路线,并比较利弊,阐述了对甲磺酰氯氯化水解法优越性。

In the liquor of acetic acid,the catalyzed synthesis of m-chlorobenzoic acid by the reaction of m-chlorobenzal dehyde and potassium bromate was studied.

在醋酸溶液中,间氯甲醛、溴酸钾为原料合成间氯甲酸,分别研究了反应温度、反应时间、原料配比、溶剂用量等条件对合成反应影响,确定了最佳工艺条件。

Objective : A method of HPLC for the determination of complex preparations of guaiphenesin , chlorpheniramine maleate and dextromethorphan hydrobromide has been described Methods : C 18 column , 0.

建立一种采用高效液相色谱检测复方制剂中氢溴酸美沙芬、愈创木酚甘油醚和马来酸氯那敏含量方法。