Question 1

Which product is formed when cyclohexene reacts with Br$$_2 in $$CCl$$_4$$?

Accepted Answer

1,2-dibromocyclohexane

Question 2

What is the major product when cyclohexene is treated with cold, dilute KMnO$$_4$$?

Accepted Answer

cis-1,2-cyclohexanediol

Question 3

Which reagent would convert cyclohexene to cyclohexane?

Accepted Answer

H$$_2$$, Pd/C

Question 4

What is the product of the reaction between 1,3-butadiene and Br$$_2 at $$low temperature?

Accepted Answer

1,2-dibromo-3-butene and 1,4-dibromo-2-butene (mixture)

Question 5

Which of the following best describes the product(s) of the reaction: 1-butyne + H$$_2 ($$Lindlar's catalyst)?

Accepted Answer

cis-2-butene

Question 6

What is the product when 2-methyl-2-butene is treated with O$$_3$$ followed by Zn/AcOH?

Accepted Answer

Acetone and propanal

Question 7

Which reaction sequence would convert cyclohexene to 1,2-cyclohexanediol?

Accepted Answer

1. OsO$$_4$$; 2. NaHSO$$_3$$

Question 8

Which product is formed when 1,3-butadiene reacts with ethene in the presence of heat?

Accepted Answer

Cyclohexene

Question 9

What is the product of the Diels-Alder reaction between cyclopentadiene and maleic anhydride?

Accepted Answer

cis-Norbornene-5,6-endo-dicarboxylic anhydride

Question 10

Which of the following best describes the regiochemistry of the addition of HBr to 1,3-butadiene at low temperature?

Accepted Answer

1,2-addition is favored

Question 11

Which product is formed when 2,3-dimethyl-2-butene is treated with Br$$_2 in $$CCl$$_4$$?

Accepted Answer

2,3-dibromo-2,3-dimethylbutane

Question 12

What is the product when 1,3-butadiene reacts with HBr at high temperature?

Accepted Answer

1-bromo-3-butene

Question 13

Which of the following is the product of the reaction: 1,3-butadiene + ethene (heat)?

Accepted Answer

Cyclohexene

Question 14

Which of the following best describes the product(s) of the reaction: 2-butyne + Na/NH$$_3$$?

Accepted Answer

trans-2-butene

Question 15

What is the product when 1,3-butadiene reacts with maleic anhydride?

Accepted Answer

cis-4-cyclohexene-1,2-dicarboxylic anhydride

Question 16

Which of the following is the product of the reaction: 1,3-butadiene + Br$$_2 ($$excess)?

Accepted Answer

1,2,3,4-tetrabromobutane

Question 17

Which product is formed when cyclohexene is treated with O$$_3$$ followed by Zn/AcOH?

Accepted Answer

Cyclohexanone

Question 18

What is the product of the reaction: 1,3-butadiene + H$$_2O ($$acid catalyzed)?

Accepted Answer

3-buten-2-ol

Question 19

Which of the following best describes the product(s) of the reaction: 2-methyl-2-butene + HBr (peroxides present)?

Accepted Answer

1-bromo-2-methylbutane

Alkenes, Conjugated Alkenes, and Alkynes: Reaction Mechanisms and Applications

Study Guide - Practice Questions