Question

3. Write a bond-line formula for each of the following compounds: (a) 1,4-Dichloropentane (b) sec-Butyl bromide (c) 4-Isopropylheptane (d) 22.3-Trimethylpentane (e) 3-Ethyl-2-methylhexane 6. Give systematic IUPAC names for each of the following: (b) X OH (c) 7. Sketch curves similar to the one given in Figure 3.9 showing the energy changes that arise from rotation about the C2-C3 bond of the two compounds below. You need not concern yourself with actual numeri values of the energy changes, but you should label all maxima and minima with the appropriate conformations as Newman projections. REMEMBER: C2 is the FRONT carbon and C3 is the carbon behind it. a. 2,3-dimethylbutane b. 2,2,3,3-tetramethylbutane.

Answer 1

& Ju boud line notation dlugle boud is shown by —-, double bond by = and triple bond by = Any other aton from carbon shoud be written al 1,4-dichloro pentane → first make pentane and do numbering 2 * Put chlorine at 1,4, position, the answer is ce A Iso popyl group A w 2gº 16) an ut b) de 011 - 2-ethyl-3, 3-dimethyl penture 2,2-dimethyl butan-1-01 - o v ml) but 2, 6-diethyl-4-methylheptane on 5-methylheptan-4-al