醛类

Pectin is complex polysaccharides rich in galactoside residues and it is most abundant in citrus fruits.

果胶主要是由半乳糖醛酸所构成的多醣体且其存在於柑橘类水果中。

In the part two, we reported the classical Knoevenagel condensation between aromatic aldehydes and acyclic active methylene compounds or cyclic active methylene compounds containing heteroatom such as (2-thio)barbituric acid, Meldrum's acid using ionic liquids as reaction medium.

在第二部分中我们研究了离子液体中开链活性亚甲基化合物、杂环类活性亚甲基化合物如(2-硫代)巴比妥酸、Meldrum's酸与芳香醛之间的Knoevenagel缩合反应。

On the basis of this, 1,3-dipolar cycloaddition reactions were studied using imine esters as the starting marerials.

本论文使用不同类型芳香醛与氨基酸酯的加成反应合成了一系列氨基酸酯亚胺类化合物。

Ni compounds are excellent catalysts for the reduction of nitroaromatics and SiO_2 is a commonly-utilized catalyst for imine formation.

镍类催化剂是硝基还原的优秀催化剂，SiO_2是亚胺合成的常用促进剂，因而Ni/SiO_2很有可能是从芳香族硝基化合物和醛一锅合成亚胺的优良多功能催化剂。

Besides, The reaction of aldehydes with dithioacetate enethiolates followed by alkylation effectively gives α-hydroxyl ketene dithioacetals.

此外，用醛与硫代羧酸硫酯反应再通过烷基化也可以有效地获得α-羟基二硫缩烯酮类化合物。

Schiff ' s reagent A reagent used to detect the presence of aldehyde and ketone groups in certain compounds.

Schiff 试剂：供检测特定化合物中是否有醛和酮类物质的一种试剂。

Third on 2 aldehyde and nucleic acid amino or with phosphatide kind (like amine of phosphatide acyl alcohol) remove reaction to also can produce similar fluorescent product.

丙二醛与核酸上的氨基或与磷脂类起反应也能产生类似的荧光产物。

Previously, we reported chiral 2, 5-disubstituted pyrrolidine derivatives as chiral catalyst ligands in the reaction of diethylzinc with arylaldehydes. Very high yields and enationselectivities have been achieved in this asymmetric addition reaction.

我们小组以前合成的具有C〓-对称性的五员氮杂环类手性配体在二乙基锌和醛的不对称加成反应中取得了优良的结果。

By the comparison of juice tlavour components with those of wild grape wine,wefound that wild grapes consisted of acetals,esters,alcohols, aldehydes, ketones etc,theyexisted in glycosidically-bound forms.Some wine flavour components had been poten-tially in grape,fermentation helped them showup,many alcohols and esters formedmade wine aroma and flavour richer and more complicated.

对葡萄汁与酒中的香味成分对比发现，野生葡萄中的香味成分由烷、酯、醇、醛、酮等组成，它们可能以结合态存在于汁中；葡萄酒中的许多香味成分已潜在于葡萄原料中，发酵能使它们充分表现，发酵中形成了较多的醇、酯类物质，使酒的风味更浓郁、复杂。

Using glutaral to crosslink HLC to get sponginess hematischesis material, and it is named Human-like collagen hematischesis sponge. The physical and chemical properties, hemostatic effect and biocompatibility of human-like collagenhematischesis sponge was studied.

采用戊二醛交联的方法将HLC制成海绵状止血材料，命名为类人胶原蛋白止血海绵，并对其理化性质、体内外止血效果和生物相容性进行了研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。