The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism. Concept Introduction: Anionic polymerization: Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium. Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

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Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

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Answers to the remaining 6 questions will be hand-drawn on paper and submitted as a single file upload below: Review of this week's reaction: H₂NCN (cyanamide) + CH3NHCH2COOH (sarcosine) + NaCl, NH4OH, H₂O ---> H₂NC(=NH)N(CH3)CH2COOH (creatine) Q7. Draw by hand the reaction of creatine synthesis listed above using line structures without showing the Cs and some of the Hs, but include the lone pairs of electrons wherever they apply. (4 pts) Q8. Considering the Zwitterion form of an amino acid, draw the Zwitterion form of Creatine. (2 pts) Q9. Explain with drawing why the C-N bond shown in creatine structure below can or cannot rotate. (3 pts) NH2(C=NH)-N(CH)CH2COOH This bond Q10. Draw two tautomers of creatine using line structures. (Note: this question is valid because problem Q9 is valid). (4 pts) Q11. Mechanism. After seeing and understanding the mechanism of creatine synthesis, students should be ready to understand the first half of one of the Grignard reactions presented in a past…

Answer 2

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Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

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Answer 3

Question

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

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Answer 4

Question

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

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Answer 5

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

Answer 6

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

Answer 7

Chapter 27.6, Problem 10P

(a)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by anionic mechanism.

Concept Introduction:

Anionic polymerization:

Initiator will be a nucleophile which reacts with the monomer to form a propagating site that is an anion and the initiator can be compounds like sodium amide or butyllithium.

Nucleophile will attack on the alkene and the alkene contains a substituent that can withdraw electrons by resonance.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The polymerization of 2,2-dimethyloxirane should be described by cationic mechanism.

Concept Introduction:

Cationic polymerization:

The polymerization in which an electrophile acts as an initiator and adds to the monomer which leads to the formation of a carbocation.

The initiator widely used is a Lewis acid and in the polymerization the electrophile adds to the sp2 carbon bonded to the most number of hydrogens.

Answer 10

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Answer 12

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Answer 13

Ch. 27.3 - Prob. 1P Ch. 27.3 - Prob. 2P Ch. 27.3 - Prob. 3P Ch. 27.3 - Prob. 4P Ch. 27.3 - Prob. 5P Ch. 27.3 - Prob. 6P Ch. 27.4 - Prob. 7P Ch. 27.5 - Rank the following groups of monomers from most...Ch. 27.5 - Why does methyl methacrylate not undergo cationic...Ch. 27.6 - Prob. 10P

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