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单词 Orthoesters
释义

Orthoesters

中文百科

原酸酯 Orthoester

(重定向自Orthoesters)
原乙酸乙酯的球棍模型。

原酸酯(Orthoester)是原酸(羧酸的水合物,RC(OH)3)形成的酯类,即是在同一碳原子上含有三个烷氧基基团的有机化合物。例子包括原甲酸乙酯(HC(OC2H5)3)和原乙酸乙酯(CH3C(OCH2CH3)3)。最简单的原酸酯是原甲酸酯。原酸酯对碱稳定,但易被酸分解,可用作酯的保护基,也可以与醛或酮反应,引入缩醛或缩酮保护基。

英语百科

Orthoester 原酸酯

(重定向自Orthoesters)
A ball-and-stick model of ethyl orthoacetate, an orthoester.
Allgemeine Strukturformel der Orthoester, R1= Wasserstoffatom oder Organyl-Rest, R2 = Organyl-Rest (Alkyl-Rest, Aryl-Rest, Alkylaryl-Rest etc.)
Strukturformel eines Orthoesters der Essigsäure, R = Organyl-Rest (Alkyl-Rest, Aryl-Rest, Alkylaryl-Rest etc.)

In organic chemistry, an orthoester is a functional group containing three alkoxy groups attached to one carbon atom, i.e. with the general formula RC(OR′)3. Orthoesters may be considered as products of exhaustive alkylation of unstable orthocarboxylic acids and it is from these that the name 'ortho ester' is derived. An example is ethyl orthoacetate, CH3C(OCH2CH3)3, more correctly known as 1,1,1-triethoxyethane. Orthoesters are used in organic synthesis as protecting groups for esters.

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更新时间:2025/6/19 6:31:36