14. Select the correct IUPAC name for the following compound. (A) 2-bromo-3-ethyl-6-propyl-7-t-butylnonane (B) 2-bromo-3,7-diethyl-6-propyl-8,8-dimethylnonane (C) 2-bromo-3,7-diethyl-8,8-dimethyl-6-propylnonane (D) 8-bromo-2,2-dimethyl-3,7-diethyl-4-propylnonane (E) 8-bromo-3,7-diethyl-2,2-dimethyl-4-propylnonane

4. trans-1-tert-Butyl-4-isopropylcyclohexane has two conformers. Using the following data to calculate the strain in this two conformers, by how much kJ/mol that one is favored than the other?If, H-C-C-H eclipsed interaction strain: 4 kJ/mol;CH3-C-C-H eclipsed interaction strain: 6 kJ/molCH3-C-C-CH3 eclipsed interaction strain: 11 kJ/mol;CH3-C-C-CH3 gauche interaction strain: 3.8 kJ/mol Each one strain (S) of 1, 3-X-H diaxial interaction in monosubstitutedcyclohexane (kJ/mol): (A) 9.2 (B) 22.8 (C) 32 (D) 16 (E) 11.4

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