a) Interpretation: Two 1 HNMR spectra belonging to crotonic acid (trans-CH 3 CH=CHCOOH) and methacrylic acid (H 2 C=C (CH 3 ) COOH) are given. Which corresponds to which is to be explained. 1 HNMR: Spectrum (a): 1.91 δ (Rel.area: 3.00), 5.83 δ (Rel.area: 1.00), 7.10 δ (Rel.area: 1.00), 12.21 δ (Rel.area: 1.00). Concept introduction: Crotonic acid (trans-CH 3 CH=CHCOOH) and methacrylic acid (H 2 C=C (CH 3 ) COOH) can be easily distinguished by looking the signal for the methyl protons in these two compounds. To explain: Of the two 1 HNMR spectra given, which belongs to crotonic acid (trans-CH 3 CH=CHCOOH) and methacrylic acid (H 2 C=C (CH 3 ) COOH).

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What steps might you take to produce the following product from the given starting material? CI Br Он до NH2 NH2

Answer 1

Question

Chapter 20.SE, Problem 67AP

Interpretation Introduction

a)

Interpretation:

Two ¹HNMR spectra belonging to crotonic acid (trans-CH₃CH=CHCOOH) and methacrylic acid (H₂C=C (CH₃) COOH) are given. Which corresponds to which is to be explained.

¹HNMR: Spectrum (a): 1.91 δ (Rel.area: 3.00), 5.83 δ (Rel.area: 1.00), 7.10 δ (Rel.area: 1.00), 12.21 δ (Rel.area: 1.00).

Concept introduction:

Crotonic acid (trans-CH₃CH=CHCOOH) and methacrylic acid (H₂C=C (CH₃) COOH) can be easily distinguished by looking the signal for the methyl protons in these two compounds.

To explain:

Of the two ¹HNMR spectra given, which belongs to crotonic acid (trans-CH₃CH=CHCOOH) and methacrylic acid (H₂C=C (CH₃) COOH).

Interpretation Introduction

b)

Interpretation:

Two ¹HNMR spectra belonging to crotonic acid (trans-CH₃CH=CHCOOH) and methacrylic acid (H₂C=C (CH₃) COOH) are given. Which corresponds to which is to be explained.

¹HNMR: Spectrum (b): 1.93 δ (Rel.area: 3.00), 5.66 δ (Rel.area: 1.00), 6.25 δ (Rel.area: 1.00), 12.24 δ (Rel.area: 1.00).

Concept introduction:

Crotonic acid (trans-CH₃CH=CHCOOH) and methacrylic acid (H₂C=C (CH₃) COOH) can be easily distinguished by looking the signal for the methyl protons in these two compounds.

To explain:

Of the two ¹HNMR spectra given, which belongs to crotonic acid (trans-CH₃CH=CHCOOH) and methacrylic acid (H₂C=C (CH₃) COOH).

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What steps might you take to produce the following product from the given starting material? CI Br Он до NH2 NH2

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