1 HCHO + CH3MgBr == CH3CH2OH + PCC或者KMnO4 == CH3CHO2 HCHO + HCN == CH3CN + NaOH ==CH3COOH + SOCl2(亚硫酰氯) ==CH3COCl + NaBH4== CH3CHO
这个可以制备吗?