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222283

Sigma-Aldrich

Magnesium perchlorate

ACS reagent

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About This Item

Linear Formula:
Mg(ClO4)2
CAS Number:
Molecular Weight:
223.21
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NB.24

grade

ACS reagent

Quality Level

form

flakes
powder, chunks or granules

reaction suitability

reagent type: oxidant

concentration

>10% Mg (EDTA titration)

impurities

≤0.005 meq/g Titr. free acid
≤0.025 meq/g Titr. base

loss

≤8% loss on drying

suitability

passes test for moisture absorption

SMILES string

[Mg++].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O

InChI

1S/2ClHO4.Mg/c2*2-1(3,4)5;/h2*(H,2,3,4,5);/q;;+2/p-2

InChI key

MPCRDALPQLDDFX-UHFFFAOYSA-L

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General description

Magnesium perchlorate (Mg(ClO4)2) is widely used as drying agent for gases. It can remove water from gases (with no organic contaminants) at the rate of 0.001mgwater/l.

Application

Magnesium perchlorate (Mg(ClO4)2) may be employed as a catalyst in the following studies:
  • Preparation of α-aminophosphonates.
  • Enantioselective Diels-Alder reaction between cyclopentadiene and 3-acryloyl-1,3-oxazolin-2-one.
  • Preparation of imines and phenylhydrazones.
  • Protection of alcohols in the form of t-butyl ethers.
Magnesium perchlorate may be used as a catalyst in the synthesis of the following compounds:
  • α-Aminophosphonates via three-component reaction between an amine, an aldehyde or a ketone and a di-/trialkyl phosphite.
  • Imines and phenylhydrazones by the condensation of carbonyl compounds with amines and phenylhydrazine.
  • Knoevenagel adducts via Knoevenagel condensation between β-diketones and aliphatic or aromatic aldehydes.
It may also be used to catalyze the protection of alcohols as t-butyl ethers.

Pictograms

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Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Ox. Sol. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Magnesium perchlorate as efficient Lewis acid for the Knoevenagel condensation between ?-diketones and aldehydes.
Bartoli G, et al.
Tetrahedron Letters, 49(16), 2555-2557 (2008)
Magnesium perchlorate as an efficient catalyst for the synthesis of imines and phenylhydrazones.
Chakraborti AK, et al.
Tetrahedron Letters, 45(41), 7641-7644 (2004)
Eagleson M.
Concise Encyclopedia Chemistry, 343-343 (1994)
Giuseppe Bartoli et al.
Organic letters, 7(3), 427-430 (2005-01-28)
[reaction: see text] A new mild method for protecting alcohols as t-butyl ethers is reported. The reaction proceeds with Mg(ClO4)2 and Boc2O and shows general applicability. The deprotection of t-butyl ethers has also been revisited. Preliminary results indicate the CeCl3
The first enantioselective synthesis of both Diels-Alder enantiomers with the same bis (oxazoline)-magnesium perchlorate chiral catalyst.
Desimoni G, et al.
Tetrahedron Letters, 37(17), 3027-3030 (1996)

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