查询词典 aldehyde hydrate

The method of 4-methylimidazole synthesis using pyroracemic aldehyde was selected,and flow chart and operation process were studied.

本文对4-甲基咪唑常用的几种合成方法进行了介绍，对其工业化生产的优缺点进行了对比，最终选定了丙酮醛法，并给出了工艺流程图和操作步骤。

The aldehyde elimination step was predicted to be irreversible.

醛的还原消除步骤是不可逆的。

As the caprylic aldehyde content increased,strain at break and tensile strength were decreased.

拉伸强度和断裂伸长率均随辛醛含量的增加而降低。

Objective To investigate the synthesis methods Veratrum aldehyde and to study the synthesis of microwave radiation of the advantages and disadvantages of this new approach, to provide guidance for the production of meaning.

目的 考察合成藜芦醛的方法，并研究微波辐射合成这种新方法的优缺点，为生产提供指导意义。

To be successful, a crucial selectivity problem in the conversion of aldehyde 4 to aldol 3 had to be understood and solved.

要取得成功，关键选择性问题转化为乙醛醛34已被理解和解决。

According to the properties of bio-oil, converting carboxyl acid and aldehyde through esterification and aldolization have great potential.

根据生物油中化学组成的特点，将极性基团转化为稳定的非极性基团的化学改性方法是生物油改性具有潜力的发展方向。

When adding dianion 5 to aldehyde 4 and using the molar ratios of entry 1, the yield of aldol 3 dropped from 98% to 86%, and 7% of alcohol 7 was formed.

当加入醛酸根5比4，用摩尔进入一日产量3醛从98%下降到86%，而77%的酒精组成。

The connection was tried in three different ways: Aldol reaction, coupling of sulfone and aldehyde, the Umpolung.

尝试三种不同的方法来进行两个片段的偶联。试验了Aldol反应，砜基与醛的偶联反应和极性反转的方法。

We examine the asymmetric Aldol reaction with cyclohexanone and aldehyde using tunable and bifunctional organocatalysts in aqueous media.

相反，尽管在盐水溶液中的反应效果可以比在水中的效果要好，但是较少有使用盐水溶液作为反应介质的报道。

The brown color of lecithin is largely the result of heathing the oil during solvent stripping and is to be the result of an aldehyde-amine reaction or aldol condensation.

大豆磷脂中的褐色物质可能是毛油在汽提时生成的，据认为是缩醛产物。

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。