Draw and designate the R or S configuration for each compound. CH2CH2CH2CH3 Br CH3 H3C CH(CH3)2...

Question

Question

CH2CH2CH2CH3 Br CH3 H3C CH(CH3)2 NH2

Draw and designate the R or S configuration for each compound.

Answer 1

Answer #1

I believe you want to assign the R/S descriptors to the given molecules. Remember the rules:

Assign priority of groups based on atomic mass of the atom attached to the stereocenter.
In case the attached atom is C, move to the second atom to determine the priority.
Number groups as 1, 2, 3 and 4 based on priority, with 1 bearing the heaviest atom and 4 the least heavy atom.
Imagine a rotation of the groups from 1-->2-->3 and look down from the back of group 4. If the rotation is clock-wise, assign the stereocenter (R)-while a counter clockwise rotation will make the stereocenter (S)-.

Answer 2

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