Question

Write the structures of two chair conformations of 1-tert-butyl-2-methylcyclohexane. Which conformation is more stable? Explain your answer.

Answer 1

$1-$tert-butyl$-2-$methylcyclohexane

Figure-1 represents the structure of the compound.

Figure-2 represents more stable.

Figure-3 represents less stable.

There are 2 chair conformation of the molecule.

Second one is less stable than first one because of the presence of $1,3-Di-axial$ interaction present in second option not in first one.