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- It is produced by the reduction of fuchsin by sulfurous acid, and is oxidized by aldehydes and ketones, restoring the magenta color of the fuchsin. 配法是用亚硫酸使品红溶液还原,若有醛酮类存在时便使之氧化而重新呈现品红本身的洋红色。
- The reaction of sulfate with aldehydes and ketones has been known for many years. 大家知道硫酸盐能与醛类和酮类反应已有许多年了。
- REDOX Relationships amongst Alcohols, Aldehydes and Ketones and Carboxylic acids. 醇,醛与酮和羧酸之间的氧化还原关系。
- In aprotic solvents magnesium effects pinacol reductive coupling of aldehydes and ketones. 在非质子性溶剂,镁对频纳醇与醛和酮的还原耦合反应也有一定效果。
- Progress in piancol coupling of aldehydes and ketones using low valent titanium is reviewed in recent years. 论文综述了低价钛还原偶联醛酮合成片呐醇的进展,在超声辐射下进行了片呐醇的合成,全文共分为四章。
- "The keto form predominates in many aldehydes and ketones, the enol form in ph enol s. 在许多醛和酮中酮基都是最主要的组分。
- Progress in pinacol coupling of aldehydes and ketones using low valent titanium is reviewed in recent years. 文章综述近几年来由低价钛还原偶联醛酮合成片呐醇的进展。
- The acetalization and ketalization of various aldehydes and ketones with catechol by using HY zeolite as catalyst were studied. 研究了HY分子筛催化邻苯二酚与环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正己醛、正辛醛、苯甲醛、二苯甲酮等十余种醛(酮)的缩合反应。
- The result indicated that normal weather factor(temperature,humidity,air pressure,wind speed etc) had some effect on the concentration of aldehydes and ketones in the ambient air. 结果表明:常规气象因子(温度、湿度、气压、风速等)对大气环境中醛酮类有机污染物的浓度有一定的影响。
- The various methods for the umpolung of carbonyl compounds (aldehydes and ketones), secondary amines and the most frequently used umpolung reagents are introduced. 先介绍了羰基化合物(醛、酮)的极性转换的各种方法,然后谈到胺的极性转换方法和最常用的极性转换试剂。
- REDOX Relationships amongst Alcohols, Aldehydes and Ketones and Carboxylic acids.Alcohols as Nucleophiles (Formation of Alkoxides) and Electrophiles (Formation of Osylates). 醇作为亲核试剂(烷氧基化合物的形成)和醇作为亲电试剂(佯盐的形成)。
- Beany flavours are a kind of volatile gas composed of alcohols,aldehydes and ketones with low molecular weight,which are produced through oxidizing fatty acids by soybean lipoxidase. 大豆腥味是由脂肪氧化酶氧化不饱和脂肪酸后生成的一类醇、醛、酮低分子挥发性气体所致,并直接限制了大豆食品的广泛食用。
- CARBONYL COMPOUNDS: Summary of Various Types of Carbonyl Compounds -- Aldehydes and Ketones, Carboxylic Acids and Carboxylic Acid Derivatives (Acid Chlorides, Acid Anhydrides, Esters and Amides). 羰基化合物:各种羰基化合物的总结--醛、酮、羧酸和羧酸衍生物(醯卤,酸酐,酯和醯胺)
- catalyst cyanation of aldehydes and ketones 醛酮催化氰化加成反应
- TOW NEW REAGENTS FOR DISTINCTION BETWEEN ALDEHYDES AND KETONES 两个新的醛酮鉴别试剂
- Progress in Pinacol Coupling of Aldehydes and Ketones Using Low Valent Titanium 低价钛还原偶联醛酮合成片呐醇的进展
- Keywords low valent titanium;aldehydes and ketones;pinacol coupling;pinacol; 低价钛;醛酮;片呐醇偶联;片呐醇;
- Keywords weather factor;ambient air;aldehydes and ketones;relation analysis; 气象因子;大气;醛酮类有机物;相关性分析;
- Nanoparticle Spinel Catalysts for Heterogeneous Oxidation from Allylic Alcohols to Corresponding Aldehydes and Ketones 尖晶石纳米催化剂应用于烯丙醇多相氧化制烯丙醛或烯丙酮
- Prediction and Measurement of the Relative Mass Calibration Factor of Aldehydes and Ketones Derivatives 醛、酮类腙衍生物校正因子的预测与测定