- #1
Entropia
- 1,474
- 1
Why are "Mg turnings" used in Grignard reactions instead of "regular" Mg?
What is so special about Mg turnings?
What is so special about Mg turnings?
Originally posted by Entropia
Why are "Mg turnings" used in Grignard reactions instead of "regular" Mg?
What is so special about Mg turnings?
Originally posted by himanshu121
as it may inc surface area for more effective rxn
You may remember it from your sophomore O. Chem. class. Basically, a magnesium inserts itself into a bond between an alkyl group and a halide, then adds to a carbonyl. So methyl bromide reacted with magnesium will react with acetaldehyde to produce isopropyl alcohol.Originally posted by Monique
What is a Grignard reaction?
shrumeo said:edit: I see someone mention Riecke Mg. Making this is an extreme pain (reducing MgCl2 with potassium in THF), but it's as active as you can get, maybe too reactive even. Can you buy this stuff yet? Surely it would be extremely hazardous to ship.
movies said:Elemental magnesium is very reactive and the surface oxidizes almost immediately in air. If you use the turnings then you can squash them a little bit in order to expose some of the interior metal which has not yet been oxidized. It's a nifty trick and works great!
A Grignard reaction is a type of chemical reaction that involves the use of a Grignard reagent, which is a compound containing a carbon-magnesium bond, to react with an organic halide. This creates a new carbon-carbon bond and results in the formation of a new organic compound.
Magnesium is used as the key component in creating the Grignard reagent. It reacts with an organic halide to form an organomagnesium compound, which then undergoes further reactions to form the desired product.
Grignard reactions are commonly used in organic synthesis to create a wide range of organic compounds such as alcohols, aldehydes, ketones, and carboxylic acids. They are also used in the production of pharmaceuticals, fragrances, and plastics.
Grignard reactions offer several benefits, including high selectivity and specificity, mild reaction conditions, and the ability to form complex organic molecules with ease. They are also versatile and can be used in various types of reactions, making them a valuable tool in organic chemistry.
While Grignard reactions have many advantages, there are also some limitations and risks to consider. These reactions are highly sensitive to moisture and oxygen, which can result in side reactions or incomplete reactions. They also require careful handling due to the reactivity of the Grignard reagents, which can be dangerous if not handled properly.