Dayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities
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Min.Order:1 Kilogram
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Type:Lab/Research institutions
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Min.Order:5 Kiloliter
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Min.Order:1 Kilogram
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Min.Order:1 Gram
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Min.Order:1 Kilogram
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Tetraethylgermane CAS NO.597-63-7 Application:Tetraethylgermane CAS NO.597-63-7
Tetraethylgermane cas 597-63-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
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Conditions | Yield |
---|---|
In tetrahydrofuran addn. of soln. of C2H5Br in THF to soln. of Yb complex in THF at 20°C; YbBr2*2THF as ppt., detection of (C2H5)4Ge by gas-liquid chromatography as volatile product; | A 91% B 95% |
tris(1,2-benzenediolato-O,O′)germanate
ethylmagnesium bromide
tetraethylgermane
Conditions | Yield |
---|---|
In diethyl ether (N2); added dropwise a soln. of C2H5MgBr to a suspn. of Ge-compound at room temp.; stirred for 30 min; hydrolyzed; extracted with ether; washed with water; dried over MgSO4; evapd.; | 83% |
In diethyl ether potassium tris(1,2-benzenediolato)germanate and 4 equiv EtMgBr in Et2O at 20°C for 0.5 h; | 83% |
Coppinger's Radikal
ethylmagnesium bromide
germanium hydride trichloride
A
tetraethylgermane
B
hexaethyldigermane
C
octaethyltrigermane
Conditions | Yield |
---|---|
With water In tetrahydrofuran treatment od reaction mixt. in THF with excess EtMgBr, hydrolysis; extn. (ether), drying over Na2SO4; identification of individual compds.; | A 80% B 20% C <1 |
Conditions | Yield |
---|---|
germylene heated with EtBr at 130°C for 15 h in a sealed tube was treated with EtMgBr, Ar atm.; hydrolyse, distn.; | 79% |
Conditions | Yield |
---|---|
With magnesium In tetrahydrofuran (N2); heated a suspn. of Mg and Ge-compound under stirring to 50-55°C; added dropwise a soln. of ethyl bromide; refluxed under stirring for 2 h; cooled; added ether; evapd.; distd.; | 78% |
germanium(II) bis(3,5-di-tert-butyl-1,2-semiquinonate)
ethylmagnesium bromide
germanium hydride trichloride
A
tetraethylgermane
B
hexaethyldigermane
C
octaethyltrigermane
Conditions | Yield |
---|---|
With water In benzene heating reaction mixt. in C6H6 (tube fused, 48 h, 80°C), treatment with EtMgBr soln. (ether), hydrolysis; drying (Na2SO4), mixt. chromy.; | A 70% B 25% C 5% |
Conditions | Yield |
---|---|
69% |
chloro-trimethyl-silane
triethylgermyllithium
trimethylsilyldiethylgermyllithium
tetraethylgermane
Conditions | Yield |
---|---|
With water In N,N,N,N,N,N-hexamethylphosphoric triamide Equimolar mixt. of Et3GeLi and Me3SiGeEt2Li in HMPA is stirred for 94 h at 25°C, then Me3SiCl and water are added.; extn. with ether; | 69% |
Conditions | Yield |
---|---|
Inert atmosphere; | 63% |
Conditions | Yield |
---|---|
Inert atmosphere; | 52% |
ethyl bromide
triethylgermyllithium
diethylgermane
A
Triethylgerman
B
tetraethylgermane
Conditions | Yield |
---|---|
In N,N,N,N,N,N-hexamethylphosphoric triamide Mixt. of Et3GeLi and Et2Ge(H)2 in HMPA is stirred for 10 h at 25°C, then EtBr is added and stirred for 30 min.; Addn. of water and hexane, organic layer is analyzed by GLC.; | A 49% B 51% |
Conditions | Yield |
---|---|
In benzene Et2Hg was added to GeF2 in C6H6 at 0°C with stirring, then ambient temp., C2H4Br2 was added, then EtMgBr; hydrolysis, product was not sepd.; mixt. was analyzed by cpv; | 49% |
Conditions | Yield |
---|---|
In tetrahydrofuran byproducts: SmBr2; addn. of soln. of C2H5Br in THF to soln. of Sm complex in THF at 20°C; SmBr2 as ppt., detection of (C2H5)4Ge by gas-liquid chromatography as volatile product; | 45% |
ethyl bromide
diethylgermane
A
Triethylgerman
B
tetraethylgermane
Conditions | Yield |
---|---|
With potassium In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide byproducts: Et2Ge(H)2; Small pieces of K are placed in an ampoule containing HMPA and THF, after stirring for 30 min dissolved Et2Ge(H)2 in THF is gradually added, the react. mixt. is stirred for 24 h, then EtBr is added.; Addn. of water and hexane, organic layer is examined.; | A 42% B 12% |
With sodium In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide byproducts: Et2GeH2; Small pieces of Na are placed in an ampoule containing HMPA and THF, after stirring for 30 min dissolved Et2Ge(H)2 in THF is gradually added, the react. mixt. is stirred for 24 h, then EtBr is added.; Addn. of water and hexane, organic layer is examined.; | A 35% B 8% |
Conditions | Yield |
---|---|
With germanium tetrabromide |
Conditions | Yield |
---|---|
With germaniumtetrachloride |
Conditions | Yield |
---|---|
With hexane; germaniumtetrachloride; sodium chloride |
Conditions | Yield |
---|---|
Reaktion der Kalium-Verbindung; |
Conditions | Yield |
---|---|
With diethyl ether; benzene Zersetzung des Reaktionsgemisches mit Eis und Eisessig; |
Conditions | Yield |
---|---|
at 40℃; for 3h; |
Conditions | Yield |
---|---|
In not given Grignard reaction;; | |
In not given Grignard reaction;; |
Conditions | Yield |
---|---|
In not given byproducts: ZnCl2; | |
In not given byproducts: ZnCl2; |
germanium tetrabromide
tetraethylgermane
A
Bromotriethylgermanium
B
diethylgermanium dibromide
Conditions | Yield |
---|---|
aluminium bromide other Radiation; a mixt. of GeBr4 and tetraethylgermane in presence of AlBr3 as catalystin a Pyrex tube is irradiated with a light stream of argon for 12 min at atmospheric pressure (microwave irradiation: 300 W) (Ar); identification by (1)H-NMR, gas chromy.; | A 95% B n/a |
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