查询词典 aldehydes

The simple sugars （monosaccharides0 are basically aliphatic polyhydroxy aldehydes and ketones: HOCH2- n-CHO and HOCH2- n-1-C-O-Ch2OH, called "aldoses" and "ketoses," re ectively.

单糖本质上是脂族的多羟基醛和酮，即HOCH2-2-CHO和HOCH2-n-1-C：O-CH2OH，分别称为醛糖和酮糖。

In all these components, the kinds and the contents of aromatic hydro-carbon, aldehydes, alkyls and alkenes increased significantly.

此外，对于军队、登山、探险、航海等特殊行业，就更需要一种贮存时间长，且品质有保证的方便主食面包。

The main constituents of this oil were aldehydes(31.15%),terpene and their oxide(20.66%),alkyls(8.35%),Furan heterocyclic compounds(6.41%),non terpene alcohol(4.26%).

知母挥发油的化学成分主要为：醛类(31.15%)、萜类及其氧化物(20.66%)、烷烃及其含氧取代物(8.35%)、呋喃杂环化合物(6.41%)、非萜醇类(4.26%)。

It showed that the yeast KD had higher fermentation capacity, gentle fermentation speed, and the produced kiwi fruit wine was clear and transparent with light yellow color and typical kiwi fruit aroma and wine-alcohol bouquet. Furthermore, the produced kiwi fruit wine had high alcohol content to 10.5 %vol, high vitamin C content to 0.94 g/L and low content of reducing sugar, total acid and volatility acid. 48 aroma substances in total were identified including esters (19 kinds, 34.65 %), higher alcohols(5 kinds,15.38 %), fatty acids(6 kinds,13.30 %), and micro-content of alkyls, aldehydes and ketones, which accounted for 97.33 % of total peak area. Such yeast was suitable for kiwi fruit wine brewing. Tran. by YUE Yang

结果表明，酵母KD的单位酵母发酵力较高，发酵速度平缓，所酿猕猴桃酒澄清、透明，色泽浅黄，酒体醇和爽口，具有猕猴桃果香和纯正的酒香，典型性强；酒度达10.5 %vol，Vc含量为0.94 g/L，残糖、总酸和挥发酸含量均较低；共鉴定出48种香气物质，占总峰面积的97.33 %，其中，酯类物质达19种，相对含量为34.65 %，高级醇(5种，15.38 %)和脂肪酸（6种，13.30 %）含量少，烷烃类和醛酮类等香气物质种类丰富，酒体协调、饱满，是1株适宜猕猴桃酒酿造的优良酵母。

Herein we mainly discuss the asymmetric addition of terminal alkynes to aldehydes and ketones using commercially available chiral pool and their derivatives.

这篇论文论述了商业化的手性源及其衍生物配体催化的末端炔对醛和酮的不对称加成反应的研究。

Chapter 6: The analogue of the Squalamine's intermediate was synthesized from desoxycholic acid by using asymmetric addition of alkynes to the aldehydes (ee up to 99%) as key step.

第六章：利用炔对醛的不对称加成反应为工具，我们从方便易得的原料猪胆酸出发，对甾体化合物的侧链进行了改造，合成了Squalamine的中间体类似物。

The asymmetric addition of terminal alkynes to aldehydes and ketones is an important method of synthesizing chiral propartyl alcohols and tertiary alcohols, which are important pharmaceutical intermediates.

末端炔对醛和酮的不对称加成是合成光学纯的炔丙醇和手性叔醇的重要方法，是不对称催化的重要研究课题之一。

For the first time,our group found that lanthanide amides can initiate the Cannizarro disproportionation reaction of aromatic aldehydes.

我们小组首次发现了通过稀土胺基化合物引发芳香醛发生Cannizzaro-型歧化反应，生成相应的酰胺和醇。

A facile one-step method waspresented for the synthesis of N-fluoroalkanesulfonyl amidines 〓 inmoderate to good yield from the reaction of azides, ketones or aldehydes, andsecondary amines at room temperature.

在和无官能团取代的烯胺化合物的反应中，它发生了烷基迁移过程，而且利用该反应我们实现了由酮或醛，二级胺和叠氮一锅法合成脒类化合物〓。

The best results 98% ee, 94% ee and 59% ee were obtained in silylcyanation of aldehydes, borane reduction of prochiral ketones and ketimines, respectively.

醛的硅氰化反应ee值最高达到98%，酮的硼烷还原反应ee值达94%，而亚胺的硼烷还原反应ee值只有59%。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。