Synthesis of o phenylenediamine from o nitroaniline by catalytic hydrogenation at lower pressure was studied.
以邻硝基苯胺为原料，采用低压催化加氢还原技术合成邻苯二胺。
Presented in Chapter 2 are the experimental details on synthesis of the bicyclic heterocycles bearing an N-O bond.
本论文有关合成含n - O键双环杂环化合物的实验结果收录在第二章。
A highly active copper catalyst for synthesis of o - (p -) toluidine via vapor-phase catalytic hydrogenation was prepared.
介绍了所制备的高活性铜催化剂用于气相催化加氢还原制备邻(对)甲苯胺的研究。
The synthesis of quinoxaline-2-carboxaldehyde from o-phenylenediamine and fructose was too expensive because of its low yield.
喹喔啉-2-甲醛的合成按前人的文献，操作麻烦、产率低、成本太高。
The experiment results show that a 1 is a good PTC for synthesis of ONBA with o nitrotoluene by oxidation of potassium permanganate.
实验结果表明，季铵盐a1对于高锰酸钾氧化邻硝基甲苯合成邻硝基苯甲酸，是1种优良的相转移催化剂。
One step synthesis of o methyl benzonitrile with o xylene as raw material and benzene carbonate as catalyst was carried out in liquid phase oxygenation.
以邻二甲苯为原料、苯甲酸盐为催化剂进行液相氧化，一步合成邻甲基苯甲腈。
This paper reports the synthesis of herbicide ofprimisulfuron-methyl, the method uses 2-amino-4,6-dihydroxylpyrimidine and O-chlorobenzoic acid as the raw materials.
本文主要报道了以2- 氨基-4， 6-二羟基嘧啶和邻氯苯甲酸为起始原料合成除草剂氟嘧磺隆，以及详细地介绍了各个中间体的合成方法。
The synthesis ofm—Cresol from o—toluic acid by air oxidation was studied in a 1 liter reactor under vigorous stirring conditions in order to eliminate film resistances.
在容积1升的反应釜中，在剧烈搅拌以消除膜阻的条件下研究了邻甲基苯甲酸空气催化氧化制间甲酚的反应。
A new method related to the carbonylating synthesis of 3,5-dimethylbenzaldehyde was studied using o-xylene and CO as the raw materials and anhydrous AlCl3 as the catalyst.
采用邻二甲苯和一氧化碳为原料、无水三氯化铝为催化剂，对3，5-二甲基苯甲醛的羰基化合成反应进行了研究。
In the synthesis of N-(o-tolyl)-thiourea from o-toluidine, some effective measures were taken so that the quality of the product was improved and the reaction conditions were optimized.
从邻甲苯胺合成N-邻甲苯基硫脲，对如何提高产物质量，采取了一些有效的措施，获得了最优工艺条件。
Without N fertilizer for years, it will strain synthesis of chlorophyll in maize leaf, and it will go against the synthesise of organic matter. N fertilizer is in favor of the widening o…
长期不施用氮肥会使玉米叶片内叶绿素的形成受到限制，不利于有机物质的合成；
The dimensional synthesis problem of Open Kinematic Chain(O. K. C)is studied.
本文研究了机器人开式链机构尺度的综合问题。
The synthesis and separation processes of o-chlorotoluene are described.
介绍了国内外对氯甲苯的合成与分离工艺。
The synthesis process of o-cresol formaldehyde epoxy resin was introduced and the factors affecting the synthesis reactions were discussed in this paper.
本文介绍了邻甲酚醛环氧树脂合成工艺，并对影响其合成的主要因素进行了讨论。
This paper deals with the high effective insecticidal activities of O-ethyl-S-propyl phosphorothiolatex. Synthesis and uses of this kind of compounds are reviewed specifically.
介绍了O- 乙基-S- 正丙基硫代磷酸酯类化合物的高效杀虫活性，重点评述了这类化合物的几种合成方法及应用。
The first part: synthesis and in vitro activity of 3-keto-9-o-substituted oxime derivatives of 6-o-methyl erythromycin a.
第一部分：3 -酮基- 6 - O -甲基红霉素- 9 -取代肟基衍生物的合成与体外抗菌活性。
The first part: synthesis and in vitro activity of 3-keto-9-o-substituted oxime derivatives of 6-o-methyl erythromycin a.
第一部分：3 -酮基- 6 - O -甲基红霉素- 9 -取代肟基衍生物的合成与体外抗菌活性。
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