已知:rch=ch2 Rch2cooh,如图1表示有机物a、b、c、d、e、f、x、y之间的转变关系: 其中:x、y互为同分异构体,f和c互为 Template




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tomski已知:rch=ch2 rch2cooh,如图1表示有机物a、b、c、d、e、f、x、y之间的转变关系: 其中:x、y互为同分异构体,f和c互为 coloring