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Preparing alkenyl halide from alkyne. 3.Preparing alkenyl halide from aldehyde and ketone. 3，以醛酮为原料合成卤代乙烯类化合物。
In this paper, some uncoventional reaction of aldehyde and ketone with Grignard reagent and the question of stereochemistry in the reaction was stueied chiefly. 本文着重阐述了醛、酮与格氏试剂的一些重要的非常规反应，以及反应中的立体化学问题。
Inactivation effect of alkaline phosphatase from Haliotis diversicolor in the solutions of alcohol, aldehyde and ketone 杂色鲍碱性磷酸酶在醇、醛和酮溶液中的失活作用
The Effect about the Structure of Aldehyde and Ketone in the Carbonyi Nucleophilic Addition Activity 在羰基亲核加成反应活性中醛、酮的结构所起的作用
Keywords aldehyde and ketone compound;2;4-dinitrophenylhydrazine（DNPH）;gas chromatography;ground surface water; 醛酮类化合物;2;4-二硝基苯肼;气相色谱法;地表水;
aldehyde and ketone 羰基化合物
aromatic aldehyde and ketone 芳香醛酮
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）。
At the same time, some other oxycompound groups, such as carbonyl group, aldehyde group and ketone group, appear or increase with temperature rising. 与此同时，醛、酮、酯类羰基、芳香酮、醛类羰基等类含氧基团或者从无到有，或者官能团数量不断增加。
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。