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氰乙酸二乙酯 在天德化工干活对身体有危害么?
由乙酸怎样制备丙二酸二乙酯 是大学的题吗?CH3COOH+H2-C2H5OHCH3COOH+C2H5OH-CH3COOC2H5-Cl2-CH2ClCOOC2H5-NaCN-CH2CNCOOC2H5-HOOCCH2COOC2H5-C2H5OH...
由乙酸怎样制备丙二酸二乙酯 是大学的题吗?CH3COOH+H2-C2H5OHCH3COOH+C2H5OH-CH3COOC2H5-Cl2-CH2ClCOOC2H5-NaCN-CH2CNCOOC2H5-HOOCCH2COOC2H5-C2H5OH...