Ring flips

Question 1

When performing a ring flip conformation

Answer 1

the bonds that are in the equatorial position become axial and the bonds that are in the axial positions become equatorial (the directions stay the same)

Question 2

A chair conformation that has substituents in the axial position

Answer 2

will be less stable due to the 1,3 diaxial interactions

Question 3

A chair conformation that has substituents in the equatorial positions

Answer 3

will be more stable since there will be minimal steric interactions

Question 4

if a large group (like tert-butyl) is on a chair conformation

Answer 4

the chair conformation will be locked in place since the preferred position is equatorial

Question 5

which conformation is preferred

Answer 5

the one with the most equatorial bonds and the least diaaxial interactions

Question 6

the larger the group

Answer 6

the more steric strain

Question 7

when is a chair conformation trans

Answer 7

when one group is pointing up and the other is pointing down

Question 8

when is a chair conformation cis

Answer 8

when both groups are pointing in the same direction

Question 9

how many degrees of unsaturation in an alkyne

Answer 9

2