Predict the structure of the major 1,2-addition product formed by reaction of one mole of Br2 with isoprene. Also predict the structure of the major 1,4-addition product formed under these conditions.

Draw one of the major products from this reaction. Use wedge and dash bonds to indicate relative stereochemistry where appropriate. Ignore inorganic byproducts. CH₂12, Zn/Cu ether Drawing a

Show the structures of all possible acid-catalysed dehydration products of the following. Where more than one alkene is possible, indicate which one will be formed in the largest amount. a) Cyclohexanol b) 2-butanol c) 1-methylcyclopentanol