557-18-6 Usage
Chemical Properties
Magnesium Diethyl is colorless liquid; forms solvated crystalsfrom ether, (C2H5)2Mg·(C2H5)2O; loses itsether of crystallization when heated undervacuum; freezes at 0°C (32°F); decomposesat 250°C (482°F) under high vacuum; solublein ether.
Uses
Diethylmagnesium is used as intermediate inorganic synthesis.
Health Hazard
Skin contact can cause severe burns.
Fire Hazard
Diethylmagnesium catches fire spontaneously
in air. It is susceptible to glow and can catch
fire in other gases, as well, that contain oxygen
atoms in the molecules, such as N2O and even
CO2. It explodes with water. The ether solution
of the compound is also susceptible to
ignition, upon contact with water (Bretherick
1995). It reacts violently with lower alcohols
and ammonia (Sidgwick 1950).
Safety Profile
Ignites on contact with
moist air, water, or carbon dioxide. See also
MAGNESIUM COMPOUNDS.
Check Digit Verification of cas no
The CAS Registry Mumber 557-18-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,5 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 557-18:
(5*5)+(4*5)+(3*7)+(2*1)+(1*8)=76
76 % 10 = 6
So 557-18-6 is a valid CAS Registry Number.
InChI:InChI=1/2C2H5.Mg/c2*1-2;/h2*1H2,2H3;/rC4H10Mg/c1-3-5-4-2/h3-4H2,1-2H3
557-18-6Relevant articles and documents
-
Podall,Foster
, p. 1848,1852 (1958)
-
Symmetric diarylsulfoxides as asymmetric sulfinylating reagents for dialkylmagnesium compounds
Ruppenthal, Simon,Brückner, Reinhard
, p. 897 - 910 (2015/01/30)
At -78 °C, primary dialkylmagnesium compounds reacted with diarylsulfoxides when 1.5 equiv of the dilithium salt of (S)-BINOL was added as a promotor. Alkyl aryl sulfoxides resulted in up to quantitative yield and with up to 97% ee. This demonstrates the feasibility of asymmetric sulfinylations by achiral sulfinylating agents (from the perspective of Alkyl2Mg) as well as the feasibility of asymmetric sulfoxide-magnesium exchanges (from the perspective of Ar2SO).
New Syntheses with Magnesium Hydride. Part 1: Hydromagnesiation of α-Olefins to Magnesium-dialkyls
Knott, Wilfried,Klein, Klaus-Dieter
, p. 914 - 918 (2007/10/02)
The addition of highly active magnesium hydride to α-olefins, hydromagnesiation, is a well known reaction.The use of cheap magnesium hydride exhibiting a lower reactivity is highly desirable for industrial purposes.In a combination of chemical and mechanical activation the low reactivity of high temperature magnesium hydride could be overcome thereby making a broad variety of magnesium alkyls accessible. Key words: Magnesium alkyls; hydromagnesiation; magnesium hydride.
