ChemicalBook CAS DataBase List Chromium hexacarbonyl

Chromium hexacarbonyl synthesis

5synthesis methods

Product Name:Chromium hexacarbonyl
CAS Number:13007-92-6
Molecular formula:6CO.Cr
Molecular Weight:220.06

Chromium hexacarbonyl is prepared by the reaction of anhydrous chromium(III) chloride with carbon monoxide in the presence of a Grignard reagent. A 60% product yield may be obtained at the carbon monoxide pressures of 35 to 70 atm. Other chromium salts may be used with carbon monoxide and Grignard reagent in the preparation. The compound may also be obtained by the reaction of a chromium salt with carbon monoxide in the presence of magnesium in ether or sodium in diglyme.

Chromium, pentacarbonyl[(diethylamino)phenylmethylene]-, (OC-6-21)-

117041-17-5
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Benzeneacetic acid, α-(diethylamino)-, methyl ester

105394-78-3
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13007-92-6
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$41.70/1g

Yield:105394-78-3 100%

Reaction Conditions:

with methanol in methanol;Irradiation (UV/VIS); solid carbene complex in dry methanol is added to an oven-dried Pyrex pressure tube, contents are degassed, purged with Ar, warmed to room temp., purged with CO, pressurized with 50-90 psi CO, irradiated (450 W) for 5 d; monitored by TLC, mixt. is filtered (Celite) to remove solid Cr(CO)6, evapn. in vacuo, air oxidn. overnight, filtn.; NMR, IR, elem. anal.;

References:

Hegedus, Louis S.;Schwindt, Mark A.;De Lombaert, Stéphane;Imwinkelried, Rene [Journal of the American Chemical Society,1990,vol. 112,# 6,p. 2264 - 2273]

201230-82-2 Synthesis