Identify the compound C 4 H 9 NO with the proton NMR spectrum given in Fig. 21.3.
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Identify the compound C4H9NO with the proton NMR spectrum given in Fig. 21.3. This compound has IR absorptions at 3300 and 1650 cm–1.
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2400 absorption 8 2100 18 7 1800 6 1500 5 chemical shift, Hz 1200 900 T 2H 4 3 chemical shift, ppm (8) 600 2 3H 300 3H 1 0 0 FIGURE 21.3 The NMR spectrum for Problem 21.8. The integrals are shown in red over their respective absorptions. The broad res- onance at 8 7.6 disappears after a D₂O shake, and the multiplet at 8 3.05 simplifies to a quartet.
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