Reaction of Dianion 8 with 4 To Form 7 and Enol 10.

反形成酸根84710烯醇.

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通的现象,它们都是真实的化学实体。

Poly(vinyl alcohol)(PVA)-based polyanion was prepared by esterification of PVA with sulfuric acid.

硫酸与聚乙烯醇(PVA)经酯化制备PVA聚阴离子电解质。

The best foaming condition is happened by adding 7% PYA resin and 4% foaming agent.

实验结果显示聚七烯醇树脂浓度为7%及发泡剂添加比例为4%时具有佳发泡结构。

The acetolysis,oxidation and hydrolysis reactions in the synthetic process of 16-dehydropregnenolone acetate from diosgenin were studied.

研究了以薯蓣皂素为原料合成妊娠双烯醇酮醋酸酯生产工艺中的开环、氧化水解3步反。

Secondly the enzyme is inhibited by an intermediate lower down the metabolic pathway, usually either phosphoenolpyruvate or citrate.

其次，减缓代谢途径的一个中间体，通常是磷酸烯醇或柠檬酸降低酶的活性。

Stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process.

综述羧酸衍生物的烯醇盐氧化二聚成键的规律,重点是立体选择性的过程。

In the oxidation reaction of cyclohexene, total selection of cyclohexene oxide, cyclohexanol, cyclohexenol and 2-cyclohexene-l-one reaches 98.5%, conversion reaches 33.2%.

在环己烯的氧化反中,对环氧环己烷、环己醇、环己烯醇环己烯酮的选择性共达到98.5%,转化率达到33.2%。

Testing results showed that the reactive dyes of medium and high substantivity and with vinylsulphone or monofluorotriazine groups were particularl...

大豆聚乙烯醇组分同时染色,对保证纤维表面的颜色均一性是十分重要的。

Using the method of latex polymerization,poly vinyl acetate was synhesized with PVA as protective colloid,which was crosslinked with formylamine-group containing component.

采乳液聚合的方法,以乙酰化聚乙烯醇为保护胶体合成聚醋酸乙烯乳液,并含甲酰胺基的乙组分与其交联。

Objective To evaluate the effect of bronchial artery embolization (BAE) with polyvinyl alcohol (PVA) foam and gelatinum sponge (GS) for serious hemoptysis.

目的评价聚乙烯醇(PVA)加明胶海绵(GS)栓塞支气管动脉治疗大咯血的疗效。

Single antibody of NSE, multi-antibody of glial fibrillary acidic protein (GFAP) and single antibody of neurofilament (NF200) were provided by Wuhan Boster Company.

神经元烯醇化酶单抗、胶质纤维酸性多抗、神经中丝单抗均购自武汉博士德公司。

In this paper, the PVA of major component in the Sensitized emulsion was modified by the polyreaction with formaldehyde, butyl aldehyde, furfural and alcohol.

甲醛、丁醛、糠醛对重氮感光胶中的主要成分聚乙烯醇进行改性,以增强感光胶的耐水性耐磨性。

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-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。

Approximately 30 compounds have been identified in the aroma of green tea, the major ones being benzyl alcohol, phenylethyl alcohol, a hexenol, linalool, geraniol and methyl salicylate.

约有30种化合物已从绿茶的香气中鉴别出来，其中主要的有苯甲醇、苯乙醇、已烯醇、沉香醇、香茅醇甲基水杨酸酯。