Propose a mechanism for this reaction. + Br2 + H2O 1-Pentene он Br + HBr 1-Bromo-2-pentanol
4. Propose a mechanism for the following reaction. Br Br2 ОН 7
Propose a mechanism for the following reaction. ISmTorthe Tonowing reaction. Br Br2 ОН 7
8. Which reaction is not stereospecific? Br2/CCI trans-2-Butene Br2/H2O cis-2-Pentene п trans-2-Hexene HBr III D2/Pd 1-Methylcyclohexene IV
Predict the major product(s) of the following reaction. Br2 H2O Br Br ...Br ...Br "ОН """он **OH "OH III IV 1) Only II and IV 2) Only I and IV 3) Only I and II 4) Only II and III
Which one of these reagents (HBr, HBr/H2O, Br2, Br2/H2O) would bring about the conversion shown below? Br І І ОН
Two stereoisomers are obtained from the reaction of HBr with (S)-4-bromo-1-pentene. One of the stereoisomers is optically active, and the other is not. Draw the structure of the optically inactive stereoisomer. Interactive 3D display mode HC Н.С. Br
Consider the following reaction mechanism: 1) Initiation Br2 → 2 Br• 2) Propagation (here a cycle of two steps) Br• + H2 → HBr + H• H• + Br2 → HBr + Br• 3) Termination 2 Br• → Br2 This reaction is catalyzed by platinum. Wat causes the bromine to split in the initiation step? Does the platinum influences this or is it just due the weak bonding between Br-Br?
Consider the following reaction mechanism: 1) Initiation Br2 → 2 Br• 2) Propagation (here a cycle of two steps) Br• + H2 → HBr + H• H• + Br2 → HBr + Br• 3) Termination 2 Br• → Br2 This reaction is catalyzed by platinum. My question is what does the platinum do? I know that platinum is able to split the H2 bond but is that the only function of the platinum in this reaction?
HBr in H3COH 1-bromo-1-methylcyclopentane (85%) 1-methylcyclopentyl acetate (15%) Propose a reaction mechanism for the formation of the minor product of this reaction by drawing the product of the following mechanistic step: :O=0 HO CH3 • Include all valence lone pairs in your answer
2. Consider the reaction of 3-methyl-2-pentene with HBr: HBr Show the mechanism and give the product of the reaction.