Draw all possible stereoisomers for each compound. Label pairs of enantiomers and diastereomers.

Name: Problem 25, Chapter 5: Organic Chemistry
Uploaded: 2020-02-05T03:13:47-08:00
Duration: 10 min 11 s
Channel: Grigoriy Sereda
Description: Draw all possible stereoisomers for each compound. Label pairs of enantiomers and diastereomers.

step 1 Draw all possible stereoisemes for each compound. Label pairs of an an aneurystheriomeres. A, 1

Draw all possible stereoisomers for each compound. Label...

Key Concepts

Diastereomers

Diastereomers are stereoisomers that are not mirror images of each other. Unlike enantiomers, diastereomers have different physical and chemical properties and can include compounds with multiple stereocenters where only some, but not all, centers are inverted.

Chirality

Chirality is a property of a molecule that makes it non-superimposable on its mirror image due to the presence of one or more stereocenters. This concept is crucial in stereochemistry as it underpins the existence of enantiomers and influences the behavior of molecules in biological and chemical contexts.

Stereoisomerism

Stereoisomerism refers to the phenomenon where compounds with the same molecular formula and connectivity of atoms differ only in the three-dimensional arrangement of their atoms. This concept is fundamental in understanding isomers that have different physical and chemical properties even though their skeleton remains the same.

Enantiomers

Enantiomers are pairs of stereoisomers that are non-superimposable mirror images of each other. They possess chiral centers and, because of their mirror-image relationship, typically exhibit identical physical properties except for the direction in which they rotate plane-polarized light and their interactions with other chiral molecules.

Transcript

00:01 Draw all possible stereoisemes for each compound.

00:05 Label pairs of an an aneurystheriomeres.

00:10 A, 1 2 di -methyl cyclohyxase.

00:22 First, let's draw all possible positions of methyl groups.

00:28 Compound a, both method groups are pointing away from us.

00:37 Compound b, both metal groups are pointing us.

00:51 Compound c, one methyl group is pointing toward us and the other method group is pointing away from us.

01:10 And compound d, one metal group is pointing away from us and another methyl group is pointing toward us.

01:49 Compounds a and b, they have a plan of symmetry.

01:58 If you flip compound b, by 180 degrees you will arrive to compound a so that's the same compound.

02:24 Compound c and d they are chiral they don't have a plane of symmetry and if you rotate compound c by 180 degrees you'll see that compounds d and see that compounds d and c they are mirror images.

03:07 Therefore, compounds c and d, they are anantimerous.

03:16 Compounds a in d, they are diosteromeres because they're they are stereoisemeres but not mere images.

03:27 And compounds c and d, they are also diosteromeres.

03:34 They are sterioramers, but not mirror images.

03:38 B, 3 methyl cyclopentanol.

04:11 First, let's point the methyl group away from us and the hydroxy group also away from us.

04:28 That would be a.

04:39 Now let's point both of them toward us.

04:53 That would be compound b.

05:01 Neither r or a or b have a plan of symmetry...