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厦门大学化学化工学院:《有机化学》课程教学资源(课件讲稿,双语版)第十四章 芳香化合物(14.1-14.2)Introduction

Compounds were classified as being either aliphatic or aromatic in the latter part of the nineteenth century. To be classified as aliphatic meant then that the chemical behavior of a compound was “fatlike”. To be classified as aromatic meant then that the compound had a low hydrogen/carbon ratio and that it was “fragrant”.
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