Firstly, p-methylacetophenone was obtained in the presence of alchlor as the catalyst, and the optimum condition was 4:1:2 in molar ratio for toluene, acetic anhydride and alchlor with yield of 86.2%.

首先，以甲苯和乙酸料，在催剂三氯铝存在下合成对甲基苯乙酮，并确定甲苯，乙酸和三氯铝的最佳摩尔比4: 1: 2，收率86.2%。

The isomer ratio of o-MNT to p-MNT,the degree of dinitration and the ratio of 2,6-DNT to 2,4-DNT have been investigated in the mononitration product of toluene by mixed acid.

通过改变反应条件,研究了硝硫混酸硝剂对甲苯一段硝产物的邻对异构体比例、二硝程度及2,6-二硝基甲苯与2,4-二硝基甲苯生成比例的影。

The effects of the catalyst dosage and the preparation conditions of HZ-1 zeolite,for example, number of exchange times on the benzoylation of toluene were studied.

并考察了HZ-1沸石交换次数等制备条件和催剂用量对甲苯的苯甲酰反应的影。

Citral was synthesized by catalytical rearrangement of dehydrolinalool in toluene solution with the present of molybdenyl acetylacetonate, benzoic acid and dimethyl sulfoxide (DMSO).

采用脱氢芳樟醇料，在乙酰丙酮酸钼、苯甲酸、二甲基亚砜(DMSO)的甲苯溶液中催重排合成柠檬醛，考察了柠檬醛在不同体系中的热敏性。

A survey of the health condition of 308 cases of workers exposed to benzene, toluene, xylol and mixed derivatives of benzene is presented.

本文报告了308例苯、甲苯、二甲苯及混合苯作业工人的健康状况调查结果。

Ethyl cellulose was synthesized successfully in one step based on reaction of cellulose with excess chloroethane and sodium hydroxide in toluene as diluent.

采用纤维素与过量的氯乙烷及氢氧钠反应,以甲苯稀释剂,用一步法成功地合成了乙基纤维素。

Toluene diisocyanate (TDI) is one of the most useful kinds of isocyanateth that is produced by the method of phosgenation of amine.

甲苯二异氰酸酯(TDI)是异氰酸酯合物中应用最广泛的品种之一,其工业生产主采用胺光法。

By the improved method, proglumide was synthesized in acetic anhydride with toluene as the dehydrating agent.

本文报道合成抗溃疡药丙谷胺的改进工艺。