醚是一类含有醚基团的有机化合物——一个氧原子连接到两个烷基或芳基.他们有一般公式R-O-R′,R和R′代表烷基或芳基组.醚也可以分为两类:如果烷基在氧原子的两边是相同的,那么它就是一个简单的或对称的醚,而如果它们是不同的,那么醚被称为混合的或不对称的醚.
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