Organic Chemistry Study Group

[Organic Chemistry Study Group @OrgChemStudyG]

A book on the curved-arrow mechanism has been published.https://t.co/MkMXsmxjFm
"Curved-Arrow Mechanisms: A Basic Workbook for Organic Chemistry"

[Organic Chemistry Study Group @OrgChemStudyG]

The Dean-Stark apparatus is used to drive chemical reactions to completion by removing water from the reaction mixture.

[Organic Chemistry Study Group @OrgChemStudyG]

Robinson annulation

[Organic Chemistry Study Group @OrgChemStudyG]

These two structures show the exact same molecule. The one on the right is simply the one on the left flipped over.

[Organic Chemistry Study Group @OrgChemStudyG]

The number of atoms a carbon is bonded to changes its shape.

[Organic Chemistry Study Group @OrgChemStudyG]

How to draw 3D structures:
You can leave out the hydrogen atom on a stereocenter.

[Organic Chemistry Study Group @OrgChemStudyG]

3D Structure Tip:
Here's a common mistake to avoid! Never draw your molecules like this... ❌
You can't tell the stereochemistry from this drawing.

[Organic Chemistry Study Group @OrgChemStudyG]

All of these structures represent the same molecule.

[Organic Chemistry Study Group @OrgChemStudyG]

These two structures show the exact same molecule. The one on the right is simply the one on the left flipped over.

[Organic Chemistry Study Group @OrgChemStudyG]

Rotate the molecule on the left about one of its bonds by about 60°, and you get the molecule on the right. Both of these are the same molecule.

[Organic Chemistry Study Group @OrgChemStudyG]

Here's a tip on 3D structures. Both of these drawings show the exact same molecule. Feel free to use whichever one you prefer.

[Organic Chemistry Study Group @OrgChemStudyG]

Organic chemistry tip: How to read 3D structures!
Thick wedge (solid wedge) = coming out at you.
Dashed wedge = going away from you.
Solid line = in the same plane.