Give the structure of a compound that has a formula of C₈H₁₁N and has signals in the ¹³C NMR spectrum at 25.9 ppm (CH₃),51.1 ppm (CH),125.9 ppm (CH),126.6 ppm (CH),128.3 ppm (CH),and 148.5 ppm (C).

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The presence of signals at 25.9 ppm (CH₃) and 51.1 ppm (CH) indicates the presence of a CH₃ and a CH group, respectively. Additionally, the presence of signals at 125.9 ppm, 126.6 ppm, and 128.3 ppm indicates the presence of three CH groups that are likely attached to aromatic rings. The signal at 148.5 ppm indicates the presence of a carbon that is likely part of an aromatic ring. Based on this information, the structure of the compound can be inferred to be a substituted benzene ring, with one CH group in the meta position (25.9 ppm), one CH group in the para position (51.1 ppm), and three CH groups in the ortho position (125.9 ppm, 126.6 ppm, and 128.3 ppm). The formula of the compound also indicates the presence of sulfur and nitrogen, which can be accommodated in the other positions on the benzene ring. The only choice that has a benzene ring and is consistent with these observations is B.

Give the Structure of a Compound That Has a Formula