Acetal - Wikipedia
网页Acetal. In organic chemistry, an acetal is a functional group with the connectivity R2C (OR')2. Here, the R groups can be organic fragments (a carbon atom, with arbitrary other atoms attached to that) or hydrogen, while the R' groups must be organic fragments not hydrogen. The two R' groups can be equivalent to each other (a "symmetric acetal ...
缩醛 - 维基百科，自由的百科全书
网页缩醛通式. 缩醛 （Acetal）是一类同一 碳 上连有两个 烷氧基 和一个 氢 的 有机化合物。. 缩醛可由 半缩醛 继续与 醇 反应得到，而半缩醛可以由 醛 和醇反应得到。. 缩醛（酮）生成的一般过程：.
14.3: Acetal Formation - Chemistry LibreTexts
网页Acetals are geminal-diether derivatives of aldehydes or ketones, formed by reaction with two equivalents (or an excess amount) of an alcohol and elimination of water. Ketone derivatives of this kind were once called ketals, but modern usage has dropped that term.
Acetal - Acetal Formation, Structure, Hemiacetal with Examples of …
网页Acetals are geminal-diether aldehyde or ketone derivatives formed by reacting two equivalents (or an excess amount) of alcohol with the removal of water. Ketone derivatives of this type were once known as ketals, but that term is no longer used.
缩醛 - 百度百科
网页基本信息. 通用结构为RR′C (OR′′) (OR′′′)的化合物，其中R及R′可能为氢，但R′′和R′′′不能是氢，一般地称其为“缩醛（acetals）”。. “缩酮（ketals）”是缩醛的亚类，其R及R′都不是氢。. 缩醛也可作为一个适当母体氢化物或官能性母体化合物“烷氧 ...
10.4: Acetals and Ketals - Chemistry LibreTexts
网页2022年7月20日 · A very important example of the acetal/ketal group in biochemistry is the glycosidic bonds which link individual sugar monomers to form polysaccharides (see section 1.3 for a quick review). Look at the glycosidic bond between two glucose monomers in …
Hydrates, Hemiacetals, and Acetals - Master Organic Chemistry
网页2010年5月28日 · Hydrates, hemiacetals and acetals are the products of addition reactions of oxygen-based nucleophiles (water and alcohols) to aldehydes and ketones. A hydrate contains a carbon with two single bonds to OH. A hemiacetal contains a carbon with a single bond to OH and a single bond to OR (where R is a …
17.8: Acetals as Protecting Groups - Chemistry LibreTexts
网页Acetals as Protecting Groups. The importance of acetals as carbonyl derivatives lies chiefly in their stability and lack of reactivity in neutral to strongly basic environments. As long as they are not treated by acids, especially aqueous acid, acetals exhibit all the lack of reactivity associated with ethers in general.
Acetal - an overview | ScienceDirect Topics
网页Acetals are common carbonyl compound derivatives that are often used in Organic Synthesis as protecting groups for aldehydes and ketones, as well as in many other reactions. Cyclic acetals are formed by the acid-catalyzed reaction of an aldehyde or ketone with a diol —e.g., ethylene glycol.
Acetals and Ketals – Functional Group Spotlight
网页2021年12月1日 · What are acetals? What is the difference between acetal vs hemiacetal? How are acetals involved in drug metabolism? Click the link to find out!