5 Stereochemistry Example Problems

5 Stereochemistry Example Problems - More examples of...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: More examples of assigning the relationship between two molecules Instructions: Below is a fow chart to help you decide what the relationship is between two molecules. The possible answers are: a) not isomers, b) two diFFerent depictions oF the same molecule, c) constitutional isomers, d) diastereomers, and e) enantiomers. Do they have the same molecular formula? YES NO Not Isomers Isomers YES NO Constitutional Isomers Do they have the same connectivity? Stereoisomers NO Diastereomers Are they mirror images? Are the the same? YES NO Not isomers. They are the same Enantiomers YES Example 1: This is the same as the problem that was a problem in class. NH 2 OH NH 2 OH and compound 1 compound 2 Same molecular Formula? Same connectivity? Are they the same? Yes Yes Yes Comment: These two are the same molecules. If you pick up compound 1 and Fip it over (around the horizontal-axis), you get compound 2. Notice that when you Fip over the molecule the groups pointing up will point down and visa versa. ¡lip over compound 1 compound 1 = compound 2 NH 2 OH NH 2 OH Example 2: and compound 1 compound 2 Same molecular formula? Same connectivity? Are they the same? Are they mirror images? Yes Yes No No Comment: These molecules are diastereomers. They are not mirror images. We can try to test this by drawing the mirror image of compound 1. It would look like H 3 C OH CH 3 HO H 3 C OH mirror image of compound 1with mirror below (all chiral centers are Fipped) CH 3 HO mirror image of compound 1with mirror on the right....
View Full Document

This note was uploaded on 02/23/2012 for the course CHEM 333 taught by Professor Lavigne during the Spring '09 term at South Carolina.

Page1 / 6

5 Stereochemistry Example Problems - More examples of...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online