aldehydes的例句大全

Progress on MPV Reduction Catalysts of α, β-unsaturated Aldehydes/ Ketones

α，β-不饱和醛/酮MPV还原反应催化剂研究进展

The results show: a total of 24 compounds of the volatile in longan pulp before drying were detected, including alcohols, aldehydes and ketones, easters, olefins, and the olefins were the main volatile material.

结果显示：干制前龙眼挥发性成分有24种，主要为醇类、醛酮类、酯类和烯烃类，其中烯烃类化合物是最主要的挥发性物质。

Determination of Aromatic Aldehydes in Chemical Plant Waste Waters by LC

用液相色谱法对化工厂废水中三种芳香醛类的测定

Two-step one-pot synthesis of poly-substituted imidazole compounds from aromatic aldehydes ammonium acetate ( aromatic amines) was developed using the benzimidazole salt as the catalysts under microwave irradiation.

以芳醛为底物，苯并咪唑盐做催化剂，利用微波促进，与芳醛，醋酸铵（芳胺）在水相中一锅法两步合成多取代咪唑类化合物。

The results indicate that compared with reed lignin, residual lignin in reed kraft pulp had higher contents of oxygen and phenolic and alcoholic hydroxyl groups, lower contents of methoxyl group, residual carbohydrates and total aldehydes after alkaline nitrobenzene oxidation.

研究发现，苇浆残余木素比起芦苇木素具有较高的氢含量和较低的氧含量；较低的甲氧基含量和较高的酚羟基和醇羟基含量；

Syntheses of several types of new polymer supported phosphonium salts and studies on their Wittig reactions with aldehydes

几类新型聚合物季鏻盐的制备及其Wittig反应的研究

The corresponding aldehyde acetals were obtained in almost quantitative yields when alcohols were treated with aromatic aldehydes bearing an electron-withdrawing substituent such as a nitro group.

当强吸电子的芳香醛为底物如硝基取代的苯甲醛时，几乎定量给出相应的缩醛产物。

Research on correlation of transfer ratio of some aldehydes and esters flavors and cigarettes tar content

一些醛、酯类香料在卷烟中的转移率与卷烟焦油量的相关性研究

Asymmetric synthesis of ( R) cyanohydrins from aldehydes and hydrogen cyanide using ( R) oxynitrilase from almond in micro aqueous phase was studied by GC chiral analysis.

利用气相色谱手性分析，研究了微水相中来源于杏仁的（R）醇腈酶催化醛与HCN不对称合成（R）氰醇。

aldehydes, alcohols, esters and olefins were the major constituents in granny smith apple.

果皮、果肉和果心，香味组分及其含量差异较大。

2-hexenal, nonyl aldehyde, and decyl aldehyde of aldehydes were the main compounds.

醛类化合物含量以2-己烯醛、壬醛、癸醛为主。

the double bond is attacked by the oxygen, forming aldehydes and carbonyls.

双结合受氧的攻击形成乙醛和碳酸基。

industry: boric acid; barium hydroxide; diols; ketone; of reagent; aldehydes;

所属行业：硼酸；氢氧化钡；二元醇；酮类；分析试剂；醛类；；

the results showed that two equivalent aldehydes reacted with o-phenylenediamine at room temperature using dioxane as the solvent, and 1,2-disubstituted benzimidazoles were obtained selectively in high yields under mild conditions and good functional group tolerance.

实验结果表明，两当量的醛和邻苯二胺在室温条件下，以二氧六环做溶剂即高效的选择性反应生成1,2-二取代苯并咪唑类化合物。

the 1, 2-substituted-2-aminoethanol derivatives ( 2a& 2f) were synthesized from the asymmetric addition of (+)-camphor imine ( 1) derived from benzylamine to a variety of aldehydes or ketones ( 4).

本文通过（+）-樟脑缩苄胺（1）与不同醛、酮韵不对称加成，经转氨合成了1,2取代-2-氨基乙醇（2）。

a few notes to the fehling reaction of aldehydes and ketones

关于醛酮斐林反应的几点注记

schiff base complexes are formed through the condensation of aldehydes or ketones with primary amines.

Schiff碱类化合物是通过利用含有羰基的醛或酮类化合物与含有伯氨基的胺类化合物通过发生缩水反应而形成的。

a method for calculating~ ( 17) o-nmr chemical shifts of carbonyls of aldehydes and formic acid

一般醛和甲酸羰基~（17）O-NMR化学位移的研究

aldehydes, dmf, carbonyl metal complexes, and methyl format are the convenient sources to provide the carbon monoxide in more safe way both in liquid state and in solid state.

醛、DMF、羰基金属络合物Ni（CO）4及Mo（CO）6和甲酸甲酯是温和条件下提供方便安全的一氧化碳来源的液体或固体物质。

carbon dioxide promoted allylation of aldehydes and ketones

二氧化碳促进的醛和酮等羰基化合物烯丙基化反应研究