I have repeatedly read my stereochemistry chapter, and I understand how to draw a particular relationship if I'm asked, but if I'm given two compounds, I am having trouble figuring out what relationship they share: enantiomers, diastereomers, identical, or conformational.
Since I can't scan this document, I'm going to try and describe the compounds. I tried assigning R/S to each of the chiral centers in the compound and comparing them, but I think that only works when you know which relationship you want.
a) There is one compound with two carbons, and to the left carbon there is an H in the plane of the page, methyl going into the page, and bromine coming out. On the right carbon, there is Bromine in the plane of the page, H going into the page and methyl coming out of the page.
The other compound listed next to it has two carbons. The left carbon has a methyl in the plane of the page, H going into the page, and Bromine coming out. The other carbon of this compound has methyl in the plane of the page, H going into the page, Bromine coming out.
What is the relationship between the two? I tried assigning R/S to the compounds and since one compound had R/S and S/R, I thought they were enantiomers, but the answer key said it was conformational. How do I approach these types of problems.
b) Then there was one compound that has two carbons. The left one has methyl going into the page, Bromine in the plane, and H out. The right one has bromine in the plane, H going in and methyl coming out.
The other compound has the left carbon with H in the plane, Bromine in, methyl out of the page. The right carbon has methyl in the plane, bromine in, H out.
what is the relationship? I am confused on how to approach these. Any tips or suggestions would be greatly appreciated! Thanks in advance.