CH2=CH—CH—CH3 + HBr —(t°)→ CH3—CHBr—CH—CH3
___________|__________________ ____________________|
___________CH3_______________ ____________________CH3
CH3—CHBr—CH—CH3 + KOH(спирт. р-р) —(t°)→ CH3—CH=C—CH3 +
_________ _____|________________________________________________|
_________ _____CH3_____________________________________________CH3
+ KBr + H2O