Бутан -бутен1-бутен2-2,3бутандиол

C4H10=(Pt) CH3-CH2-CH=CH2+H2 CH3-CH2-CH=CH2 + HBr= CH3-CH2-CH2Br-CH3  CH3-CH2-CH2Br-CH3 +NaOH =(C2H5OH ) CH3-CH=CH-CH3 +NaBr +H2O  CH3-CH=CH-CH3 +Br2=CH3-CH2Br-CH2Br-CH3  CH3-CH2Br-CH2Br-CH3 +2KOH= CH3-CH=C=CH3 +2 KBr +2H2O