1、
CH3CH2Br + NaOH（水）=== CH3CH2OH + NaBr
CH3CH2OH + O2 === CH3COOH + H2O
CH3COOH + CH3CH2OH === CH3COOC2H5 + H2O
2、
先用上法中的第一个方程制取乙醇,配置氢氧化钠的乙醇溶液
CH3CH2Br + NaOH === NaBr + CH2=CH2 + H2O
CH2=CH2 + Br2 === CH2BrCH2Br
CH2BrCH2Br + 2 NaOH（水）=== CH2OH-CH2OH + 2 NaBr
CH2OH-CH2OH + 2 O2 === HOOC-COOH + 2 H2O
HOOC-COOH + CH2OH-CH2OH === 乙二酸乙二酯 + 2 H2O