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Question 11.1: At what approximate positions would you expect ethyl acrylat...

At what approximate positions would you expect ethyl acrylate, H_{2} C=CHCO_{2}CH_{2}CH_{3}, to show ^{13} C NMR absorptions?

Strategy

Identify the distinct carbons in the molecule, and note whether each is alkyl,
vinylic, aromatic, or in a carbonyl group. Then predict where each absorbs,
using Figure 11.7 as necessary.

Annotation 2022-09-27 015001
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Ethyl acrylate has five chemically distinct carbons: two different C=C, one
C=O, one O–C, and one alkyl C. From Figure 11.7, the likely absorptions are The actual absorptions are at 14.1, 60.5, 128.5, 130.3, and 166.0 δ.

Annotation 2022-09-27 015108

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