1.In stead of using butyl nitrite and absolute ethyl-ether as reagents,in an improved method,cupferron.
本文介绍了以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的新工艺。
2.Nitrodiphenylamine is synthesiized by direct condensing method,adsopting aniline and 2-nitrochlorobenzene as feeds,PEG as phase transfer catalyst.
以胺、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胺。
3.Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%.
以氯和邻酸酐为起始原料，经四步工序合成马哚，总收率为23．4％。
4.In addition, the subjects who took guanfacine had significantly more somnolence, lightheadedness, and dry mouth than those who took placebo.
另外，用氯乙胍的患用安慰剂的患有更明显的嗜睡、头昏、口干等症状。
5.Four kinds of methods to synthesize o-Dichlorobenzaldehyde were introduced. the advantages of hydrolysis methods to reduce p-toluene sulfonyl chloride were discussed.
主要介绍了四种氯醛的合成工艺路线,并较利弊,阐述了对磺酰氯氯化水解法的优越性。
6.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.
7.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.
代替无水乙醚合成铜铁试剂的新工艺。
酸酐为起始原料，经四步工序合成马
哚，总收率为23．4％。
用
