Write the reaction of isobutene with bromine and the energy diagram of the reaction and interpret produc distribution

Question K.

b) Optical isomers can often be formed during these reactions. For products A-H indicate how many different optical isomers you expect to form for each from these reactions (you do not have to indicate whether they are diastereomers/enantiomers). c) In the preparation of substance D by ozonolysis, the second step is necessary treatment of the reaction mixture with zinc in acetic acid. If we forgot this step, we would get substance V instead of substance D, which would probably explode when isolated. What is the structure of substance V? *24 X 1: ozone V e) What products do you expect to form if they react with alkene X: I - HBr in diethyl ether; II - Brl in methanol; III - PhSCI in diethyl ether; IV - Selectfluor in methanol. P M EtOH NA EtONa PhSNa EtOH E H+ O TsCl Pyridín F- T2, Pd/C G4 mCPBA H₂SO4 10 %, H₂O 1: BH3 H◄ 2: H₂O₂ ill X Br₂ cyclohexane HCI A > В B HBr warmth, benzoylperoxid 1: ozone 2: Zn, ACOH Mg THF с D D₂O K I + J NaOH

which of the following general statements is true about the addition of HBr to conjugated dienes  (A) At low temperature, the 1,2-adduct predominates (B) At low temperature, the 1,4-adduct predominates (C) At high temperature, the 1,2-adduct predominates (D) Temperature does not affect the outcome of the reaction