Drying Alcohol Using Magnesium and Molecular Sieves

By Brian Lemay 100 comments

Warning: Alcohols and magnesium metal are highly flammable. Fire safety protocols must be in place. Greetings fellow nerds. In this video we’ll dry some organic solvents using magnesium metal and molecular sieves. Now before we must first explain what we mean by drying solvents. We don’t mean drying as in evaporating them. When chemists say […]

Protection of alcohols | Alcohols, ethers, epoxides, sulfides | Organic chemistry | Khan Academy

By Brian Lemay 2 comments

Sometimes when you’re trying to synthesize a molecule, you have to use a protecting group. And in this video, we’re going to talk about how to protect alcohols using a trialkylsilyl group. And so let’s say, our goal is to make this target compound over here on the right. And we need to start with […]

What Alcohol Does to Your Body

By Brian Lemay 68 comments

We explain what alcohol does to your body. This is Michael. He enjoys going out and drinking at the weekend sometimes a bit more than he should! He’s worried that it might be affecting his health – what exactly is alcohol doing to him? Michael knows that alcohol is used to describe beverages containing ethanol. […]

SN1 and SN2 reactions of alcohols | AOrganic chemistry | Khan Academy

By Brian Lemay 5 comments

Voiceover: Let’s look at a few nucleophilic substitution reactions of alcohols. And I’m assuming that you have seen a SN-one and SN-two mechanism before. Let’s start with a primary alcohol. So this is ethanol. It is a primary alcohol because the carbon bonded to the OH is bonded to one other carbon. And primary alcohols […]

Does Alcohol Kill Brain Cells?

By Brian Lemay 100 comments

[Intro] The claim that alcohol kills brain cells dates back to the temperance movement of the early twentieth century when Prohibition advocates wanted to make alcohol illegal in the United States. These people, who warned that a couple of gin rickeys would eat away your brain were the same ones that also circulated claims that, […]

Properties of alcohols | Chemical Processes | MCAT | Khan Academy

By Brian Lemay 1 comment

Let’s start with physical properties of alcohols. And so we’re going to compare, in this case, alcohols to alkanes And this alkane on the left here, two carbons, so this is of course ethane. On the right, if we take off one of those hydrogens and replace it with an OH, we of course have […]

Green Woodturning Techniques – Alcohol Soak & Walnut Oil Finish

By Brian Lemay 21 comments

Hi, Alan Stratton from As Wood Turns. (www.AsWoodTurns.com). As woodturners, we want the ultimate turning experience: taking a bowl from a log in a tree, rough turning it, drying it, finish turning it, finishing it, and obtaining a very nice bowl in the process, such as this one. In this video, I’ll cover two of […]

IUPAC Nomenclature of Haloalkanes and Alcohols

By Brian Lemay 51 comments

so now let’s take a look at some other kinds of substituents other than alkyl substituents a very common one is halogens. when you have a hydrocarbon with halogen substituents these are called haloalkanes so here’s one, and now all the rules are the same so first we can identify the longest carbon chain being […]

Oxidation of alcohols | Chemical Processes | MCAT | Khan Academy

By Brian Lemay 3 comments

Let’s see what happens when you oxidize alcohol. So in the top left here, we’re starting with a primary alcohol. And the carbon that’s attached to the OH group is your alpha carbon. To oxidize an alcohol, you must have alpha hydrogens. You must have hydrogens attached to that alpha carbon in order for the […]

Dehydration of 1° alcohols The E2 Mechanism

By Brian Lemay 6 comments

So let’s go ahead and start off with my primary mechanism. So what if I have a primary alcohol. We know it’s not that easy to dehydrate. It doesn’t make good carbocations. So what mechanism are we going to use? It turns out that for this mechanism, because we don’t want to use a carbocation, […]

  • 1
  • 2