14.53 Friedel-Crafts alkylation of benzene with 1-chlorobutane gave a product for which the 'H and 13С NMR spectra are shown in L Figure 14.56. The number of attached hydrogens from DEPT analysis are indicated on the 13C NMR spectrum. Assign a structure to the product. AICI3 + CH3CH2CH,CH,Cl C10H14 all CH CH3 CH2 CH3 CH C 150 100 50 Chemical shift (8, ppm) 1.7 1.6 1.5 llen 2.7 2.6 2.5 1.3 1.2 1.1 0.9 0.8 0.7 10 9. 8 7 4 3 2 1 Chemical shift (8, ppm)

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.