The trisubstituted pi bond and its configuration have to be identified and given. Concept Introduction: Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority. E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

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Answer 1

Question

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

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#1. Retro-Electrochemical Reaction: A ring has been made, but the light is causing the molecule to un- cyclize. Undo the ring into all possible molecules. (2pts, no partial credit) hv

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I have a question about this problem involving mechanisms and drawing curved arrows for acids and bases. I know we need to identify the nucleophile and electrophile, but are there different types of reactions? For instance, what about Grignard reagents and other types that I might not be familiar with? Can you help me with this? I want to identify the names of the mechanisms for problems 1-14, such as Gilman reagents and others. Are they all the same? Also, could you rewrite it so I can better understand? The handwriting is pretty cluttered. Additionally, I need to label the nucleophile and electrophile, but my main concern is whether those reactions differ, like the "Brønsted-Lowry acid-base mechanism, Lewis acid-base mechanism, acid-catalyzed mechanisms, acid-catalyzed reactions, base-catalyzed reactions, nucleophilic substitution mechanisms (SN1 and SN2), elimination reactions (E1 and E2), organometallic mechanisms, and so forth."

Answer 2

Question

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

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Answer 3

Question

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

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Answer 4

Question

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

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Answer 5

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

Answer 6

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

Answer 7

Chapter 7, Problem 92IP

(a)

Interpretation Introduction

Interpretation:

The trisubstituted pi bond and its configuration have to be identified and given.

Concept Introduction:

Z-isomer: when two groups with higher priorities are on same side of alkene double bond, then it is called as Z-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

E-isomer: when two groups with higher priorities are on opposite side of alkene double bond, then it is called as E-isomer. Priority depends on atomic number of atoms. Greater the atomic number, higher the priority.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The total number of possible stereoisomers for pladienolide B has to be described.

Concept Introduction:

Stereo isomers: These are isomers, which are having same molecular formula but differ in their spatial arrangement. The number of stereoisomers in a compound with n number of stereocenters are 2n.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The enantiomer of pladienolide B has to be drawn.

Concept Introduction:

Enantiomers: These isomers are non-superimposable mirror images. Enantiomers have same physical and chemical properties, but their ability to rotate plane-polarized light (+/-) by equal amounts are in opposite directions.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for chiral center connected to ester oxygen has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

Answer 14

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

Answer 15

(e)

Interpretation Introduction

Interpretation:

The diastereomer identical to pladienolide B except for configuration of disubstituted pi bond outside the ring has to be drawn.

Concept Introduction:

Diastereomers: These isomers are non-superimposable and not mirror images. It occurs when stereoisomers of a compound have different configuration at stereocenters and are non-mirror image.

Answer 16

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Answer 18

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Answer 19

Ch. 7.2 - Prob. 1CC Ch. 7.3 - Prob. 2CC Ch. 7.3 - Prob. 1LTS Ch. 7.3 - Prob. 3PTS Ch. 7.3 - Prob. 4ATS Ch. 7.3 - Prob. 2LTS Ch. 7.3 - Prob. 5PTS Ch. 7.3 - Prob. 6ATS Ch. 7.3 - Prob. 7CC Ch. 7.4 - Prob. 8CC

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