1.2.4- Trimethylcyclohexane

Chemical Name 1,1,3-trimethylcyclohexane CAS Registry No 3073-66-3 Molecular Formula C9H18 Molecular Weight 126.239 Melting Point (°C) ... 

Chemical/Physical. Complete combustion in air produces carbon dioxide and water vapor. 1,1,3-Trimethylcyclohexane will not hydrolyze because it does not contain a hydrolyzable functional group. 

In evaluating a chemical structure for chirality, you should look for carbons tarrying four different attached groups. There may be more than one chiral carbon, and you should be alert to the fact that structural differences in the attached groups do not necessarily show up at the first, or even the second, position along a chain. As an example, consider the chirality of 1,1,3-trimethylcyclohexane,... 

Draw the chair conformations of 1,1,3-trimethylcyclohexane. Which conformation is more stable Why is it not possible, on the basis of the material in this chapter, to determine the exact energy difference between these conformations ... 

In light of your answer to Problem 4.44, draw the two chair conformations of 1,1,3-trimethylcyclohexane, and estimate the amount of strain energy in each. Which conformation is favored ... 

Names in Order 1-ethyl-3-methylcyclohexane 1-ethyl-4-methylcyclohexane 1,1,2-trimethylcyclohexane 1,1,3-trimethylcyclohexane... 

Fig. 8.1. ChromatogTam of impurities in toluene on a column containing Apiezon with use of a reactor containing concentrated sulphuric acid (the broken lines show the peaks given by benzene and toluene in ordinary analysis). Peaks 1 = methane 2 = n-pentane 3 = benzene 4 =n-heptane 5 = methyl-cyclohexane 6 = ethylcyclopentane 7 = methylhejJtane 8 = 1,2,4-trimethylcyclopentane 9 = 2-methylheptane +n-octane 10 = 4-methylheptane 11 = 1,1-dimethylcyclohexane 12 = trans-1,2-dimethylcyclohexane 13 = rcns-l,3-

Calculate the amount of steric strain in each of the chair conformers of 1,1,3-trimethylcyclohexane. Which conformer would predominate at equilibrium ... 

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