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单词 Spiro compound
释义

Spiro compound

中文百科

螺环化合物

 A fully carbo-cyclic spiro com-pound. Spiro(5.5) undecane,[2] again shown in line-angle representation and in apparent planarity, masking the actual most populated chair conformation of each ring, and their actual orthogonal orientation to one another.
 A fully carbocyclic spiro compound. Spiro-pentadiene, an esoteric hydrocarbon, in a representation where all carbons and hydrogens are shown explicitly. Note the two cyclopropene rings, each being planar, and the two being non-coplanar (perpendicular) to each other.

螺环化合物是一种由单个原子连接两个双环的有机化合物,在自然界中,环的构造基本上可以相同或是不同的,连接两个环之间的原子称为spiroatom(螺原子),通常是四级碳(又称螺碳),也可以是硅、磷、砷等。螺原子一般是季碳原子。螺型化合物会利用括号把环数分别写出,环数也包含螺原子本身,而数字小的会在数字大的前面,且中间以点号分离。如下图中所示,A化合物叫做1-溴-3-氯螺环[4.5]癸烷-7-醇、B化合物叫做1-溴-3-氯螺环[3.6]癸烷-7-醇。这种化合物也同时包含了环己烷和环戊烷,叫做螺环[4.5]癸烷。此命名法是由阿道夫·冯·拜尔在所1900年提出。

英语百科

Spiro compound 螺环化合物

 A fully carbo-cyclic spiro com-pound. Spiro(5.5) undecane,[2] again shown in line-angle representation and in apparent planarity, masking the actual most populated chair conformation of each ring, and their actual orthogonal orientation to one another.
 A fully carbocyclic spiro compound. Spiro-pentadiene, an esoteric hydrocarbon, in a representation where all carbons and hydrogens are shown explicitly. Note the two cyclopropene rings, each being planar, and the two being non-coplanar (perpendicular) to each other.
 The Brazilian  Laurencia dendroidea (red algae) sesquiterpene and halogenated carbocyclic spiro compound, elatol.[9]
 A further example of a hetero-cyclic spiro compound, the on-market drug spironolactone, where the two 5-membered rings ring in the upper right hand corner compose a spiro ring system. One of the rings is a lactone (i.e., contains as ester functional group).

A spiro compound, or spirane, from the Latin spīra, meaning a twist or coil, is a chemical compound, typically an organic compound, that presents a twisted structure of two or more rings (a ring system), in which 2 or 3 rings are linked together by one common atom, examples of which are shown at right.

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更新时间:2025/6/21 6:53:19