F g 2. Esamine the spectrum. Determine the sumber of oquivalene types of protons in the compound 3. Istegrate the spectrum. Determine the ratios of protons 4 Determise the types of protos preseat Examination of the number of signals and 60.9-1.5 82-2.5 Methyl, methylene, and methine protons Protoes adjacent to a carbomyl group, benrylie hydrogens, or Protots on a carbon adjacent to an oxygen or halogen Alkeme protoes: coupling cosstant ef 0-2 Hz-pesinal alkene, coupling constant of S-12 constact of 12-23 Hr-trans alkene, or proson on carbon coupling 57-8 89-10 810-13 Aromatic ring procons Prubiem 24 109 CH Aldehyde proo Carboxylic acid proton further enhance the information obtained from the chemical shifts Characteristic a An ethyl group occurs as a triplet (which integrates to 3H) and a quartet(c b. An isopropyl group eccurs as a doublet (which integrates to 6H) and a multiplet (a ic splitting patterss. Splitting patterss and coupling constant 5, Look or c patterns are listed below 3.5 CH) ietegrates to 2H) The triplet is always furtber upfield beptet, achually, which iste grates to IH) Often, the outer peaks of maltiplets can't be seen c. A tert-butyl group appears as a singlet (which istegrates to 9H1 d. Barring overlapping signals, a singlet that integrates to 3H is usually one methry robilen 2.B a signal that integrates to 6H is usually two methyl groups, and a signal that integrates to 9H is usually three methyl groups. 82.9(IM) 5. Put it all together. Draw a structure that fits the elements of unsaturation, the chemical shifts and splitting patterns 1. A compound with the Sormula CHn0 gives the 'H NMR spectrum shows in Figure 1 Determine the structure of the compound consistent with the data for 2A through 20