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- Both the free hydroxyl groups readily undergo esterification. 两个自由羟基,都容易酯化。
- free hydroxyl group 游离羟基
- Having only one hydroxyl group to react with acids. 一元酸的只有一个可与酸发生反应的氢原子团的。
- The content of moisture, ash, total humic acid and free humic acid of brown coal were analyzed, and the data of total acidic group, carboxy and phenolic hydroxyl group were given. 给出了各种原料煤腐植酸中总酸性基、羧基、酚羟基的分析数据。
- The free hydroxyl ion is involved in a further reaction with the silica network. 游离的氢氧离子会进一步和硅氧网络反应。
- Compared with polyethylene as a standard sample,GAP has higher surface free energy because there are many hydroxyl groups and azide group in the surface of the GAP molecule. 与聚乙烯相比,GAP的总表面的自由能较高,这主要是因为GAP表面含有羟基和叠氮基团。
- An organic compound in which the hydrogen of the hydroxyl group of methyl alcohol is replaced by a metal. 甲基化产物一种有机合成物,是甲醇的羟基中的氢被一种金属取代
- Glycolipids (glycosyldiacylglycerols) are diacylglycerols with a sugar attached to the unesterified hydroxyl group. 糖酯类物质是由甘油二酯和糖结合未酯化的羟基形成的。
- Any of a class of aromatic organic compounds having at least one hydroxyl group attached directly to the benzene ring. 酚,羟基类化合物一种芳香的有机化合物,至少含有一个与苯子不直接相连的羟基组
- Any of various alcohols containing two hydroxyl groups. 双羟基醇含有两个羟基团的醇
- Deoxy sugar A SUGAR in which oxygen has been lost by replacement of a hydroxyl group (OH) with hydrogen (H). The most important example is DEOXYRIBOSE. 脱氧糖:羟基被氢原子置换导致失去氧的一类单糖。最重要的脱氧糖就是脱氧核糖。
- An organic compound containing a hydroxyl group bonded to a carbon atom, which in turn is doubly bonded to another carbon atom. 烯醇一种有机化合物,包含有与碳原子键连的羟基群,该碳原子反过来又与另一个碳原子双键连接
- Deoxy sugar A SUGAR in which oxygen has been lost by replacement of a hydroxyl group (OH) with hydrogen (H). 脱氧糖:羟基被氢原子置换导致失去氧的一类单糖。
- Alcohol: Organic compounds characterized by a hydroxyl group (OH) bonded to a carbon atom. 醇(酒精):是有机化合物。它是一个氢氧团和碳原子的结合。
- Ethanol (grain alcohol) and methanol ( wood alcohol ) are the Best-known alcohols with one hydroxyl group. 乙醇(酒精)和甲醇(木醇)是最有名的醇类,含有一个羟基。
- Methoxymethyl chloride was used as a facile protecting group for free hydroxyls in the preparation of polyhydroxy derivatives of chalkones, flavones and isoflavones. 通过氯甲基甲醚保护相应醛、酮的酚羟基先合成查尔酮,进而方便地制备多羟基黄酮或异黄酮化合物。
- Selecting chlorination of hydroxyl group in sucrose 6-acetate is a key in the process of making sucralose. 蔗糖-6-乙酸酯的选择性氯化是合成三氯蔗糖的关键步骤。
- In these methods, the halogenation of compounds containing hydroxyl group was particularly summarized. 在这些方法中,侧重总结了含有羟基官能团的有机化合物。
- Starch molecules, adjacent chain link between the hydroxyl group on the acylamide, thus increasing the starch agglomeration in the solution. 淀粉分子中,相邻链节上的羟基之间能形成氢键,从而增加了淀粉团粒在溶液中的稳定性。
- And the diblock copolymer PI-b-PEO with an azide group was obtained by a series of modification of the hydroxyl group at the junction point. 然后将羟基的保护基团脱除,并通过一系列反应将得到的“活性”羟基依次溴化和叠氮化,最后得到链段中间含叠氮基团的嵌段聚合物PI-b-PEO。