If the reaction is proceeding under thermal conditions then the ring closure of the given compound ( 2E,4Z,6Z,8E ) -2,4,6,8-decatetraene has to be determined. Concept introduction: Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions. Woodward – Hoffmann rules for Electrocyclic reactions are listed below Number of conjugated Π bonds Reaction conditions Allowed mode of rong closure Even number Thermal Conrotatory Photochemical Disrotatory Odd number Thermal Disrotatory Photochemical Conrotatory

Question

Want to see the full answer?

Answer 1

Question

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

1. Calculate the accurate monoisotopic mass (using all 1H, 12C, 14N, 160 and 35CI) for your product using the table in your lab manual. Don't include the Cl, since you should only have [M+H]*. Compare this to the value you see on the LC-MS printout. How much different are they? 2. There are four isotopic peaks for the [M+H]* ion at m/z 240, 241, 242 and 243. For one point of extra credit, explain what each of these is and why they are present. 3. There is a fragment ion at m/z 184. For one point of extra credit, identify this fragment and confirm by calculating the accurate monoisotopic mass. 4. The UV spectrum is also at the bottom of your printout. For one point of extra credit, look up the UV spectrum of bupropion on Google Images and compare to your spectrum. Do they match? Cite your source. 5. For most of you, there will be a second chromatographic peak whose m/z is 74 (to a round number). For one point of extra credit, see if you can identify this molecule as well and confirm by…

Please draw, not just describe!

can you draw each step on a piece of a paper please this is very confusing to me

Answer 2

Question

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Answer 6

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Answer 7

Chapter 28.3, Problem 6P

(a)

Interpretation Introduction

Interpretation: If the reaction is proceeding under thermal conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene has to be determined.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Answer 8

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Answer 9

(b)

Interpretation Introduction

Interpretation: The configuration of product has to be predicted.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Answer 10

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Answer 11

(c)

Interpretation Introduction

Interpretation: If the reaction is proceeding under photochemical conditions then the ring closure of the given compound (2E,4Z,6Z,8E)-2,4,6,8-decatetraene should be determined.

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Answer 12

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Answer 13

(d)

Interpretation Introduction

Interpretation: The configuration of the product has to be predicted.

Concept introduction:

Woodward –Hoffmann rules are the set of rules used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Woodward – Hoffmann rules for Electrocyclic reactions are listed below

Number of conjugated Π bondsReaction conditionsAllowed mode of rong closureEven numberThermalConrotatoryPhotochemicalDisrotatoryOdd numberThermalDisrotatoryPhotochemicalConrotatory

Woodward – Hoffmann rules for the configuration of electrocyclic reactions are,

Substituents in the reactantMode of ring closure Configuration of the productPoint in opposite directionsDisrotatorycisConrotatorytransPoint in the same directionsDisrotatorytransConrotatorycis

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 17

Ch. 28.1 - Prob. 1P Ch. 28.2 - Prob. 2P Ch. 28.2 - Prob. 3P Ch. 28.2 - Give a molecular orbital description for each of...Ch. 28.3 - Prob. 5P Ch. 28.3 - Prob. 6P Ch. 28.3 - Prob. 7P Ch. 28.3 - Prob. 8P Ch. 28.4 - Prob. 10P Ch. 28.4 - Prob. 11P

Solution Summary: The author explains that Woodward – Hoffmann rules are used to vindicate or predict certain aspects of the stereo chemical outcome and activation energy of pericyclic reactions.

Want to see the full answer?

Chapter 28 Solutions