What will be the major product obtained from the reaction of Br₂ with 1-butene if the reaction is carried out in
c. ethyl alcohol?
d. methyl alcohol?

In light of your answer to Assessment 9.47, predict the product of the following reactions we have seen previously where an alcohol is substituted for water.

(c)

Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (iii) Br₂, H₂O ; (iv) Cl₂, CH₃OH;

(l)

Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (iii) Br₂, H₂O ; (iv) Cl₂, CH₃OH

(f)

Retrosynthetic analysis is the process of working backward to develop the synthesis of a new compound. In Chapter 10, we begin developing multistep syntheses in this manner. For now, try to work backward a single step by suggesting an alkene and a reagent that would give products (a)–(i). [Your answers should not include alkenes that undergo rearrangement to give the desired products.]

(i)

1-Methylcyclohexene forms two products when it reacts with bromine in methanol.

a. Draw the mechanism for the formation of the products.

b. Describe their stereochemical relationship—that is, are they enantiomers or diastereomers?

Using any alkene and any other reagents, how would you prepare the following compounds?

d.

What will be the major product obtained from the reaction of Br₂ with 1-butene if the reaction is carried out in

a. dichloromethane?

b. water?

Each of the following reactions has two nucleophiles that could add to the intermediate formed by the reaction of the alkene with an electrophile. What is the major product of each reaction?

a.