中性和碱性条件下：CH3CH=CH2+(MnO4)-+H2O======== CH3CH(OH)CH2(OH)+OH-+MnO2酸性条件下：CH3CH=CH2+2(MnO4)-+6H+====== CH3COOH+CO2+2Mn2++4H2O没有错吧！
CH3CH=CH2+2KMnO4+2KOH->CH3CHOHCH2OH+2K2MnO4
