Filters
Question type
Study Flashcards

Devise a multistep synthesis of the target molecule from the given starting material.Show the reagents needed for each step and the product of each step. Devise a multistep synthesis of the target molecule from the given starting material.Show the reagents needed for each step and the product of each step.

Correct Answer

verifed

verified

Which Which bond is easiest to break homolytically? (For clarity, not all bonds in the molecule are shown.) A) A B) B C) C D) D E) E bond is easiest to break homolytically? (For clarity, not all Which bond is easiest to break homolytically? (For clarity, not all bonds in the molecule are shown.) A) A B) B C) C D) D E) E bonds in the molecule are shown.) Which bond is easiest to break homolytically? (For clarity, not all bonds in the molecule are shown.) A) A B) B C) C D) D E) E


A) A
B) B
C) C
D) D
E) E

Correct Answer

verifed

verified

Predict the product of the following reaction. Predict the product of the following reaction.

Correct Answer

verifed

verified

Predict the most likely products of Ī² cleavage of the radical shown here and draw an arrow-pushing mechanism to illustrate their formation.Predict the most likely products of Ī² cleavage of the radical shown here and draw an arrow-pushing mechanism to illustrate their formation.

Correct Answer

verifed

verified

Devise a multistep synthesis of the target molecule from the given starting material.Show the reagents needed for each step and the product of each step.Explain why the first step requires free radical conditions. Devise a multistep synthesis of the target molecule from the given starting material.Show the reagents needed for each step and the product of each step.Explain why the first step requires free radical conditions.

Correct Answer

verifed

verified

11ec7e6f_4f22_72ba_9927_b372eb...

View Answer

Predict the major organic product and provide a mechanism to illustrate its formation under the conditions shown.Show all curved arrows, lone pairs, and single electrons, and any nonzero formal charges. Predict the major organic product and provide a mechanism to illustrate its formation under the conditions shown.Show all curved arrows, lone pairs, and single electrons, and any nonzero formal charges.

Correct Answer

verifed

verified

Which of the following is a termination step in a radical chain reaction?


A) Which of the following is a termination step in a radical chain reaction? A) B) C) D) E)
B) Which of the following is a termination step in a radical chain reaction? A) B) C) D) E)
C) Which of the following is a termination step in a radical chain reaction? A) B) C) D) E)
D) Which of the following is a termination step in a radical chain reaction? A) B) C) D) E)
E) Which of the following is a termination step in a radical chain reaction? A) B) C) D) E)

Correct Answer

verifed

verified

Draw the mechanism for the following free radical chain reaction.Clearly indicate initiation and propagation steps; show one possible termination step. Draw the mechanism for the following free radical chain reaction.Clearly indicate initiation and propagation steps; show one possible termination step.

Correct Answer

verifed

verified

Which of the following radicals is most stable?


A) Which of the following radicals is most stable? A) B) C) D) E)
B) Which of the following radicals is most stable? A) B) C) D) E)
C) Which of the following radicals is most stable? A) B) C) D) E)
D) Which of the following radicals is most stable? A) B) C) D) E)
E) Which of the following radicals is most stable? A) B) C) D) E)

Correct Answer

verifed

verified

S-6-Bromo-1,6-dimethylcyclohexene reacts with hydrogen bromide in the absence of radical-inducing conditions to produce two major isomers, one of which is optically active; the other is meso.Draw the stereoisomers that can be produced if the same reaction is performed in the presence of the radical initiator AIBN. S-6-Bromo-1,6-dimethylcyclohexene reacts with hydrogen bromide in the absence of radical-inducing conditions to produce two major isomers, one of which is optically active; the other is meso.Draw the stereoisomers that can be produced if the same reaction is performed in the presence of the radical initiator AIBN.

Correct Answer

verifed

verified

Which of these would not be expected to be a product from radical reaction of the cyclopentyl radical?


A)
Which of these would not be expected to be a product from radical reaction of the cyclopentyl radical? A) B) C) D) E)
B)
Which of these would not be expected to be a product from radical reaction of the cyclopentyl radical? A) B) C) D) E)
C)
Which of these would not be expected to be a product from radical reaction of the cyclopentyl radical? A) B) C) D) E)
D)
Which of these would not be expected to be a product from radical reaction of the cyclopentyl radical? A) B) C) D) E)
E)
Which of these would not be expected to be a product from radical reaction of the cyclopentyl radical? A) B) C) D) E)

Correct Answer

verifed

verified

Predict the product of the following reaction. Predict the product of the following reaction.

Correct Answer

verifed

verified

Which of the following statements about rearrangements is false?


A) Hydrogen atom shifts in radicals are not observed.
B) 1,2-vinyl group shifts in radicals have been observed.
C) Methyl group shifts in radicals are not observed.
D) Radical rearrangements are disfavored because the transition state for the rearrangement is destabilized.
E) Carbocation rearrangements are favored because the transition state for the rearrangement is stabilized.

Correct Answer

verifed

verified

Draw the major product of this synthetic sequence. Draw the major product of this synthetic sequence.

Correct Answer

verifed

verified

Which of the following methods could not be used to facilitate radical formation?


A) inducing strain in a molecule to weaken sigma bonds
B) treating the molecule with a highly hindered base
C) starting with a molecule that will yield highly stabilized radicals on cleavage
D) starting with a molecule with an exceptionally weak sigma bond
E) treating the starting material with a radical initiator

Correct Answer

verifed

verified

Draw the two organic products formed from the reaction between 3-methylcyclohexene and N-bromosuccinimide under the conditions shown. Draw the two organic products formed from the reaction between 3-methylcyclohexene and N-bromosuccinimide under the conditions shown.

Correct Answer

verifed

verified

Which of these would be the expected product of the following reaction? Which of these would be the expected product of the following reaction? A) B) C) D) E)


A) Which of these would be the expected product of the following reaction? A) B) C) D) E)
B) Which of these would be the expected product of the following reaction? A) B) C) D) E)
C) Which of these would be the expected product of the following reaction? A) B) C) D) E)
D) Which of these would be the expected product of the following reaction? A) B) C) D) E)
E) Which of these would be the expected product of the following reaction? A) B) C) D) E)

Correct Answer

verifed

verified

Draw the stepwise mechanism for the free radical chlorination of cyclobutane to produce chlorocyclobutane.Identify initiation and propagation steps; give one example of a termination step.Use single-side curved arrows to show the movement of single electrons. Draw the stepwise mechanism for the free radical chlorination of cyclobutane to produce chlorocyclobutane.Identify initiation and propagation steps; give one example of a termination step.Use single-side curved arrows to show the movement of single electrons.

Correct Answer

verifed

verified

Which of the following statements about the anti-Markovnikov addition of HX to alkenes is false?


A) The reaction is typically run in the presence of peroxides and/or other radical initiators.
B) The regiochemistry is the result of the formation of the most substituted carbocation in the rate-limiting step.
C) The halogen atom attaches to the less substituted end of the alkene.
D) The reaction is only successful when HBr is used.
E) An alcohol is formed as a byproduct.

Correct Answer

verifed

verified

What orbitals are involved in hyperconjugative stabilization of the radical shown here? What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty


A) filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty and empty What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty
B) filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty and empty What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty
C) filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty and half-filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty
D) filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty and half-filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty
E) filled What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty and empty What orbitals are involved in hyperconjugative stabilization of the radical shown here? A) filled and empty B) filled and empty C) filled and half-filled D) filled and half-filled E) filled and empty

Correct Answer

verifed

verified

Showing 41 - 60 of 65

Related Exams

Exam 1

Atoms and Molecules; Orbitals and Bonding

64 Questions

Exam 2

Alkanes

65 Questions

Exam 3

Alkenes and Alkynes

70 Questions

Exam 4

Stereochemistry

68 Questions

Exam 5

Rings

60 Questions

Exam 6

Substituted Alkanes: Alkyl Halides, Alcohols, Amines, Ethers,thiols, and Thioethers

68 Questions

Exam 7

Substitution Reactions: the Sn2 and Sn1 Reactions

55 Questions

Exam 8

Elimination Reactions: the E1 and E2 Reactions

45 Questions

Exam 9

Analytical Chemistry: Spectroscopy

65 Questions

Exam 10

Electrophilic Additions to Alkenes

68 Questions

Exam 11

More Additions to Bonds

65 Questions

Exam 13

Dienes and the Allyl System: 2p Orbitals in Conjugation

68 Questions

Exam 14

Aromaticity

66 Questions

Exam 15

Substitution Reactions of Aromatic Compounds

68 Questions

Exam 16

Carbonyl Chemistry 1: Addition Reactions

73 Questions

Exam 17

Carboxylic Acids

66 Questions

Exam 18

Derivatives of Carboxylic Acids: Acyl Compounds

68 Questions

Exam 19

Carbonyl Chemistry 2: Reactions at the Ī‘ Position

71 Questions

Exam 20

Special Topic: Carbohydrates

40 Questions

Exam 21

Special Topic: Bio-Organic Chemistry

40 Questions

Exam 22

Special Topic: Amino Acids and Polyamino Acids Peptides and Proteins

39 Questions

Exam 23

Special Topic: Reactions Controlled by Orbital Symmetry

46 Questions

Exam 24

Special Topic: Intramolecular Reactions and Neighboring Group Participation

40 Questions

Show Answer