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9. Which compound below fits the following proton NMR data?

9. Which compound below fits the following proton NMR data?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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**Question 9: Analysis of Proton NMR Data** **Question:** Which compound below fits the following proton NMR data? - Singlet at δ 2.24 (3H) - Singlet at δ 4.53 (2H) - Singlet at δ 3.31 (3H) **Compounds:** - **Compound A:** Contains an acetyl group and appears to have a benzene ring attached. - **Compound B:** Contains an ethyl group with an alcohol (OH) and a methoxy group (OCH₃). - **Compound C:** Contains an acetyl group and an ethyl group. - **Compound D:** Contains an ethyl group with an alcohol (OH). **Explanation:** - The NMR data shows three singlets. - A singlet at δ 2.24 suggests a methyl group attached to a deshielding group. - A singlet at δ 4.53 might correspond to protons on an oxygen or other electronegative atoms. - A singlet at δ 3.31 could indicate a methoxy group or similar environment. Consider the structure and chemical environment of each compound to determine which best matches the given NMR data.
Transcribed Image Text:**Question 9: Analysis of Proton NMR Data** **Question:** Which compound below fits the following proton NMR data? - Singlet at δ 2.24 (3H) - Singlet at δ 4.53 (2H) - Singlet at δ 3.31 (3H) **Compounds:** - **Compound A:** Contains an acetyl group and appears to have a benzene ring attached. - **Compound B:** Contains an ethyl group with an alcohol (OH) and a methoxy group (OCH₃). - **Compound C:** Contains an acetyl group and an ethyl group. - **Compound D:** Contains an ethyl group with an alcohol (OH). **Explanation:** - The NMR data shows three singlets. - A singlet at δ 2.24 suggests a methyl group attached to a deshielding group. - A singlet at δ 4.53 might correspond to protons on an oxygen or other electronegative atoms. - A singlet at δ 3.31 could indicate a methoxy group or similar environment. Consider the structure and chemical environment of each compound to determine which best matches the given NMR data.
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