ORGANIC CHEMISTRY (LL) W/ACCESS
ORGANIC CHEMISTRY (LL) W/ACCESS
4th Edition
ISBN: 9781119856122
Author: Klein
Publisher: WILEY
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Chapter 22.11, Problem 27PTS

(a)

Interpretation Introduction

Interpretation: The given sets of azo dyes have to be prepared via an azo coupling reaction using the corresponding reactants which have to be identified.

Concept Introduction:

Aryldiazonium salts on coupling with an activated aromatic ring give an azo dye which produces a deep color in the final product.  This color is due to the extended conjugation in it.  This reaction occurs by electrophilic substitution reaction.  This method is called an azo coupling.  The obtained final compound is known as azo dyes.

ORGANIC CHEMISTRY (LL) W/ACCESS, Chapter 22.11, Problem 27PTS , additional homework tip  1

To find: Identify the reactants involved in the given product of azo dye via an azo coupling reaction (a)

Determine the ring which is more strongly activated

ORGANIC CHEMISTRY (LL) W/ACCESS, Chapter 22.11, Problem 27PTS , additional homework tip  2

(b)

Interpretation Introduction

Interpretation: The given sets of azo dyes have to be prepared via an azo coupling reaction using the corresponding reactants which have to be identified.

Concept Introduction:

Aryldiazonium salts on coupling with an activated aromatic ring give an azo dye which produces a deep color in the final product.  This color is due to the extended conjugation in it.  This reaction occurs by electrophilic substitution reaction.  This method is called an azo coupling.  The obtained final compound is known as azo dyes.

ORGANIC CHEMISTRY (LL) W/ACCESS, Chapter 22.11, Problem 27PTS , additional homework tip  3

To find: Identify the reactants involved in the given product of azo dye via an azo coupling reaction (b)

Determine the ring which is more strongly activated

ORGANIC CHEMISTRY (LL) W/ACCESS, Chapter 22.11, Problem 27PTS , additional homework tip  4

(c)

Interpretation Introduction

Interpretation: The given sets of azo dyes have to be prepared via an azo coupling reaction using the corresponding reactants which have to be identified.

Concept Introduction:

Aryldiazonium salts on coupling with an activated aromatic ring give an azo dye which produces a deep color in the final product.  This color is due to the extended conjugation in it.  This reaction occurs by electrophilic substitution reaction.  This method is called an azo coupling.  The obtained final compound is known as azo dyes.

ORGANIC CHEMISTRY (LL) W/ACCESS, Chapter 22.11, Problem 27PTS , additional homework tip  5

To find: Identify the reactants involved in the given product of azo dye via an azo coupling reaction (c)

Determine the ring which is more strongly activated

ORGANIC CHEMISTRY (LL) W/ACCESS, Chapter 22.11, Problem 27PTS , additional homework tip  6

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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…
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Chapter 22 Solutions

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