(CH3)2CHOH →CH2=CHCH3【消去】→(CH3)2CHCN【加HCN】→(CH3)2CClCN【氯代】→(CH3)2CClCOOH【-CN的水解】CN水解是什么？RCN + H2O + H3O+ ----->RCOOH + NH4+