SciShow
Thalidomide: The Chemistry Mistake That Killed Thousands of Babies
On October 1, 1957, thalidomide was introduced as a new morning sickness cure. Everything seemed great until later the next year, when thousands of infants were born with severe birth defects.
Professor Dave Explains
Carbenes Part 2: Cyclopropanation, C-H Insertion, and the Bamford-Stevens Reaction
In the previous tutorial we learned about carbenes. So now that we understand their properties, we are ready to learn about what we can do with them. Three major uses of carbenes involve cyclopropanation, C-H insertion, and the...
Professor Dave Explains
Pericyclic Reactions 4
Professor Dave explains the science and theory behind pericyclic reactions (Part Four)
Professor Dave Explains
Assigning R/S on Fischer Projections
We've learned about stereochemistry and also how to assign absolute configuration (R/S) to stereocenters using the Cahn-Ingold-Prelog convention. But some students are forced to learn all of this on dreaded Fischer projections. These are...
Professor Dave Explains
Practice Problem: Types of Protons
We learned about how pairs of protons can have specific relationships. They can be homotopic, enantiotopic, diastereotopic, or heterotopic. Let's apply this to some examples!
Professor Dave Explains
Practice Problem: Drawing Substitution and Elimination Products (SN1/SN2/E1/E2)
I know you guys are dying for more practice choosing between SN1/SN2/E1/E2 mechanisms, so hopefully this one helps a little. Make sure to look at all the factors we talked about in my tutorial on this topic!
Professor Dave Explains
Practice Problem: IUPAC Nomenclature and Stereochemistry
For this one we will have to be able to interpret IUPAC nomenclature to draw molecular structure, including absolute configuration using the Cahn-Ingold-Prelog convention.
Professor Dave Explains
Practice Problem: Newman Projections and Nomenclature
For this one, we will need to be able to draw Newman projections as well as name the molecule using the rules of IUPAC nomenclature. Basic stuff!
Professor Dave Explains
Ugi Reaction
We just learned about the Passerini reaction, and now it's time to learn a similar one, the Ugi reaction. This is another multi-component reaction that is excellent for generating chemical libraries. To the components of the Passerini...
Professor Dave Explains
Pericyclic Reactions Part 4: Electrocyclizations (Conrotatory/Disrotatory and Nazarov Cyclizations)
Just one more on pericyclic reactions! We have to cover electrocyclizations. This way we can talk about neat stuff with frontier molecular orbitals, like conrotatory vs. disrotatory overlap, as well as the important Nazarov cyclization....
Professor Dave Explains
Stereochemistry: Enantiomers
Defining stereochemistry and enantiomeric relationships.
TED-Ed
What is Chirality and How Did it Get in My Molecules?
Flashy animation, superb narrative, and a touch of bad-hair-day humor explain the nature of chiral molecules in this five-minute feature. Viewers find out how chemist Jacobus Van't Hoff proposed that some saturated carbon molecules are...
Khan Academy
Sn2 Stereochemistry
A short video introduces class members to Sn1 and Sn2 reactions. The study of the stereochemistry of the end product ensures that young chemists can learn not only about the reaction, but can also review the handedness,...
Khan Academy
Chiral Examples 2, Stereochemistry, Organic chemistry
After providing two more examples of diagramming in different ways, Sal reviews that a molecule that cannot be superimposed on its own mirror image is defined as chiral. The terms given to the chiral center carbon are provided.
Khan Academy
Introduction to Chirality, Stereochemistry, Organic chemistry
An introduction to chirality and whether molecules can be superimposed or not. The terminology for those molecules is given along with the relevance of that characteristic.
Khan Academy
Khan Academy: Conformational Analysis of Ethane
Understand how to analyze the staggered and eclipsed conformations of ethane. [6:19]
Khan Academy
Khan Academy: Nomenclature and Preparation of Epoxides: Stereochemistry
In this video, we'll look at the stereochemistry of epoxide formation for two reactions. [14:55]
Khan Academy
Khan Academy: Carbohydrates Epimers, Common Names
This video lesson for the MCAT explores the type of carbohydrate called "epimers" and other common names. This video lesson was developed in collaboration with the Association of American Medical Colleges and Khan Academy.
Khan Academy
Khan Academy: Stereoisomers, Enantiomers, and Chirality Centers
The definition of stereoisomers, enantiomers, and chirality centers. How to calculate the number of possible stereoisomers for a structure based on the number of chiral centers. [5:27]