This proved that nitrourea was a more suitable reactant than urea to synthesize Keto-RDX.
由此表明了在生成RDX酮的反应过程中，硝基脲
比脲更为合适的反应形式。
This proved that nitrourea was a more suitable reactant than urea to synthesize Keto-RDX.
由此表明了在生成RDX酮的反应过程中，硝基脲比脲更为合适的反应形式。
Keto-enol tautomerism is the most common tautomery phenomenon.Keto -enol themselves are the real chemical substance.
酮及烯醇互变是互变作用最普通的现象,它们都是真实的化学实体。
Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.
本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变
构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。
This paper presents the studies on the reaction form of urea or nitrourea which condenses with nitrolysis fragments of urotropine to form Keto-RDX in nitrating agents.
通过改变加料方式来研究脲或硝基脲在硝化剂中与乌洛托品硝解碎片进行缩合反应的形式。
The amino group becomes attached to the coenzyme to form pyridoxamine phosphate, and is then transferred to the a-keto acid, which is usually pyruvic acid, oxaloacetic acid, or α-ketoglutaric acid.
反应中氨基首先连接在辅酶形成磷酸吡哆氨，然后氨基转移到α-酮酸，
α-酮酸可以为丙酮酸、草酰乙酸或是α-酮戊二酸。
The review summarizes the methods of synthesis of keto-ionone by allylic oxidation of α-and β-ionones,which can be divided into five categories with different oxidation.
综述了α-和β-紫罗兰酮经烯丙位氧化制备氧代紫罗兰酮的研究进展,依据不同的氧化剂分为五大类,详细地分析了各方法的特点,指出了今后的发展趋势。
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