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inquiry79-27-6 1,1,2,2-Tetrabromoethane Now we would like to update our product list for you, kindly check the below information: 1. Catalyst series ( such as Noble Metal Catalyst, Phosphorous ligand, etc ) 2. Pharmaceutical Intermediat
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inquiryProduct name 1,1,2,2-tetrabromoethane Molecular: Br2CHCHBr2 Molecular Weight: 108.98 CAS No.: 79-27-6
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High purity 1,1,2,2-Tetrabromoethane with high quality and best price cas:79-27-6 Application:High purity 1,1,2,2-Tetrabromoethane with high quality and best price cas:79-27-6
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inquiry1,1,2,2-Tetrabromoethane Quick details Chemical Name: 1,1,2,2-Tetrabromoethane CAS No.:79-27-6 Molecular Formula: C2H2Br4 Appearance: Colorless clear liquid Package &Storage:1kg/bag (Inner: plastic bag .outer: Aluminum
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Conditions | Yield |
---|---|
With pentafluorosulfanyl bromide at 20℃; for 24h; Irradiation; | A n/a B n/a C 97.1% |
Conditions | Yield |
---|---|
With bromine |
Conditions | Yield |
---|---|
With aluminum tri-bromide; bromine at 105 - 110℃; |
Conditions | Yield |
---|---|
With water; bromine | |
With water; bromine; potassium bromide at 22℃; Electrolysis.unter langsamem Hindurchleiten von Acetylen; |
Conditions | Yield |
---|---|
With aluminum tri-bromide |
Trichloroethylene
A
1,1,2,2-tetrabromoethane
B
1,1,2-tribromo-1,2,2-trichloro-ethane
Conditions | Yield |
---|---|
With bromine Irradiation; |
Conditions | Yield |
---|---|
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature, other time; |
Conditions | Yield |
---|---|
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature; |
2-phenyl-1,3-oxathiolane
A
1,1,2,2-tetrabromoethane
B
S-(2-bromoethyl) benzothioate
C
1,2-dibromomethane
Conditions | Yield |
---|---|
With Bromoform; di-tert-butyl peroxide at 130℃; for 4.5h; Yields of byproduct given; | A n/a B 16 % Turnov. C n/a |
2-propyl-1,3-oxathiolan
A
1,1,2,2-tetrabromoethane
B
2-bromoethyl thiobutyrate
C
1,2-dibromomethane
Conditions | Yield |
---|---|
With Bromoform; di-tert-butyl peroxide at 130℃; for 4.5h; Yields of byproduct given; | A n/a B 14 % Turnov. C n/a |
2-ethyl-[1,3]oxathiolane
A
1,1,2,2-tetrabromoethane
B
2-bromoethyl thiopropionate
C
1,2-dibromomethane
Conditions | Yield |
---|---|
With Bromoform; di-tert-butyl peroxide at 130℃; for 4.5h; Yields of byproduct given; | A n/a B 18 % Turnov. C n/a |
Conditions | Yield |
---|---|
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature; |
Conditions | Yield |
---|---|
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature; |
Bromoform
A
1,1,2,2-tetrabromoethane
B
2-bromoethyl thiopropionate
C
1,2-dibromomethane
Conditions | Yield |
---|---|
With 2-ethyl-[1,3]oxathiolane; di-tert-butyl peroxide at 130℃; for 4.5h; | A n/a B 18 % Turnov. C n/a |
Bromoform
A
1,1,2,2-tetrabromoethane
B
2-bromoethyl thiobutyrate
C
1,2-dibromomethane
Conditions | Yield |
---|---|
With 2-propyl-1,3-oxathiolan; di-tert-butyl peroxide at 130℃; for 4.5h; | A n/a B 14 % Turnov. C n/a |
Bromoform
A
1,1,2,2-tetrabromoethane
B
S-(2-bromoethyl) benzothioate
C
1,2-dibromomethane
Conditions | Yield |
---|---|
With 2-phenyl-1,3-oxathiolane; di-tert-butyl peroxide at 130℃; for 4.5h; | A n/a B 16 % Turnov. C n/a |
Bromotrichloromethane
2-(hexyloxy)-1,3-dioxolane
1,1,2,2-tetrabromoethane
Conditions | Yield |
---|---|
dibenzoyl peroxide at 90℃; for 2h; Rate constant; Product distribution; other temperature; |
Bromoform
7,7-dimethyl-1,4,5,6-tetraphenyl-2,3-benzo-7-silanorbornadiene
A
1,1,2,2-tetrabromoethane
B
dimethyldibromosilane
C
1,2,3,4-tetraphenylnaphthalene
D
1,2-dibromomethane
Conditions | Yield |
---|---|
In hexane at 22.9℃; Rate constant; Product distribution; Mechanism; Irradiation; laser pulse photolysis technique; investigated by UV and 1H NMR measurements; |
ethane
A
1,1,2,2-tetrabromoethane
B
ethyl bromide
C
ethylene dibromide
Conditions | Yield |
---|---|
With 2AlBr3*CBr4; bromine at 55 - 65℃; under 760 Torr; for 3h; Title compound not separated from byproducts; | A 53 % Turnov. B 3 % Turnov. C 17 % Turnov. |
Conditions | Yield |
---|---|
unterhalb des Siedepunktes; |
Conditions | Yield |
---|---|
im Sonnenlicht; bei manchen Versuchen auch Prod.5: 1.2-Dibrom-1.2-dirhodan-aethan; cis-trans-mixture; |
Conditions | Yield |
---|---|
With iron In N,N-dimethyl-formamide | 93% |
With ethanol; zinc | |
With aluminium amalgam |
Conditions | Yield |
---|---|
With sodium hydroxide; Katamin AB In water at 25 - 30℃; for 2h; | 90% |
With diethyl ether; sodium ethanolate | |
With diethyl ether; sodium |
4-iodopyrazole
1,1,2,2-tetrabromoethane
1,1,2,2-tetrakis(4-iodo-1H-pyrazol-1-yl)ethane
Conditions | Yield |
---|---|
Stage #1: 4-iodopyrazole With potassium hydroxide In dimethyl sulfoxide at 80℃; for 0.5h; Stage #2: 1,1,2,2-tetrabromoethane In dimethyl sulfoxide for 2h; | 86.7% |
1,1,2,2-tetrabromoethane
Diethyl methylphosphonate
A
ethyl bromide
B
1,1,2-tribromoethylene
C
ethyl methylphosphonic acid
Conditions | Yield |
---|---|
at 180℃; for 10h; | A 15% B 79% C 37% |
1,1,2,2-tetrabromoethane
t-butyldimethylsiloxy-3,5-dimethoxybenzene-4-lithio
t-butyldimethylsiloxy-4-bromo-3,5-dimethoxybenzene
Conditions | Yield |
---|---|
In toluene Ambient temperature; | 77% |
1,1,2,2-tetrabromoethane
Conditions | Yield |
---|---|
With s-C4H9Li In diethyl ether; cyclohexane (Ar); using Schlenk techniques; addn. dropwise s-BuLi/C6H12 to CpFeC5H4CH2C4H7NCH2OMe/Et2O at -78°C; stirring for 1.5 h at -78°C and 1.5 h at -30°C; addn. of C2H2Br4/Et2O at -78°C for 0.5 h; stirring for 0.5 h and 16h at r.t.; quenching(H2O); sepn.; extn. aq. phase with CH2Cl2; washing of aq. phases with aq. Na2S2O5 and brine; extn. of org. phase with aq. citric acid; extn. of cobined aq. phase with Et2O; addn. NaOH to pH=9 at 0°C; extn. with Et2O; drying; chromy.Al2O3; | 74% |
Conditions | Yield |
---|---|
With chlorine monofluoride | 72% |
With mercury(II) fluoride at 150 - 160℃; | |
With hydrogen fluoride; mercury(II) oxide at 40 - 50℃; | |
With silver(II) fluoride at 80℃; Substitution; |
Conditions | Yield |
---|---|
Stage #1: NH-pyrazole With potassium hydroxide In dimethyl sulfoxide at 80℃; for 1h; Stage #2: 1,1,2,2-tetrabromoethane In dimethyl sulfoxide for 5h; | 71.4% |
Stage #1: NH-pyrazole With potassium hydroxide In dimethyl sulfoxide at 80℃; for 0.5h; Stage #2: 1,1,2,2-tetrabromoethane In dimethyl sulfoxide at 80℃; for 5h; Further stages.; | 57% |
Conditions | Yield |
---|---|
With H2O In diethyl ether 1,1,2,2-tetrabromoethane in Et2O was added slowly to suspn. FcLi2(TMEDA) in Et2O at -60°C, soln. was allowed to warm to room temp., stired for 10 h and hydrolyzed with H2O and stired for 10 min; organic layer was separated and evapd., residue was extd. with Et2O andfiltered, solvent was removed and residue was crystd. from MeOH; | 71% |
1,1,2,2-tetrabromoethane
A
1,1-dibromo-2,2-difluoroethane
B
1,1,2-tribromo-2-fluoroethane
Conditions | Yield |
---|---|
With chlorine monofluoride | A 12% B 70% |
With bromine; antimony(III) fluoride at 120 - 125℃; for 23h; | A 19% B 11% |
With bromine; antimony(III) fluoride at 120 - 125℃; for 23h; |
1,1,2,2-tetrabromoethane
1,2-dibromoferrocene
1,2,3-tribromoferrocene
Conditions | Yield |
---|---|
With lithium tetramethylpiperidinide In tetrahydrofuran; hexane Schlenk techniques used under N2 or Ar, THF soln. of 2 (8.99 mmol) addedto freshly prepd. (from hexane soln. of nBuLi (8.96 mmol) and TMP (8.96 mmol) in THF) soln. of LiTMP and stirred for 3 h at -30°C, C2H2B r4 (8.96 mmol) added at -70°C; allowed to warm to room temp. for 18 h, H2O added, extracted with Et2O, dried over MgSO4, filtered, solvent removed under vac., petroleum ether added, filtered through alumina plug, partial evaporated, cooled to 4°C; XRD; | 69% |
Conditions | Yield |
---|---|
Stage #1: ferrocene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In hexane Inert atmosphere; Stage #2: 1,1,2,2-tetrabromoethane In diethyl ether; hexane at -78℃; for 4h; | 67% |
Stage #1: ferrocene With n-butyllithium; N,N,N,N,-tetramethylethylenediamine Stage #2: 1,1,2,2-tetrabromoethane at -78℃; |
Conditions | Yield |
---|---|
at 105℃; for 36h; complexation; | 65% |
1,1,2,2-tetrabromoethane
N,N-dimethylaminomethylferrocene
rac-2-(N,N-dimethylaminomethyl)bromoferrocene
Conditions | Yield |
---|---|
With n-butyllithium In tetrahydrofuran; diethyl ether all manipulations under inert atm. (Ar or N2); soln. of Fe compd. in Et2O cooled to 0°C, Li compd. added slowly, stirred at ambient temp.for 24 h, THF added, cooled to -78°C, Br compd. added, allowed t o warm to room temp., stirred at; ambient temp. overnight, water added, aq. phase extd. with ether, combined org. phase dried with anhydr. MgSO4, filtered, concd., chromy. (alumina, Et2O/Et2NH 95:5); elem. anal.; | 62% |
1,1,2,2-tetrabromoethane
bromoferrocene
1,2-dibromoferrocene
1,2,3-tribromoferrocene
1,2,3,4,5-pentabromoferrocene
Conditions | Yield |
---|---|
With lithium tetramethylpiperidinide In tetrahydrofuran Schlenk techniques used under N2 or Ar, mixt.(10.8 mmol) of 1 (51%), 2 (24%), 4 (18%) and 5 (7%) in THF added to LiTMP (100 mmol) in THF and stirred for 5 h at -30°C, C2H2Br4 (100 mmol) added at -78°C, warmed to room temp. for >16 h; quenched with H2O, extracted with CH2Cl2, organic layer washed with aq. 1M HCl and H2O, dried over MgSO4, solvent removed under vac., chromd. (neutral alumina, hexane), concentrated, allowed to stand at 5°C for 16 h; elem.anal., XRD; | 57% |
1,1,2,2-tetrabromoethane
chlorogermane
methyllithium
digermylacetylene
Conditions | Yield |
---|---|
In diethyl ether byproducts: LiBr, CH4, MeBr; absence of air and moisture; treatment of C2H2Br4 with 4 equiv. of MeLi (room temp., 1 h), evapn. (vac., 1 h), condensation of 2 equiv. of ClGeH3, warming to room temp. (5 min); fractional low-temp. distn. (condensing at 206 K); | 50% |
NH-pyrazole
1,1,2,2-tetrabromoethane
C
(Z)-1,2-bis(1H-pyrazol-1-yl)ethylene
Conditions | Yield |
---|---|
Stage #1: NH-pyrazole With potassium hydroxide In dimethyl sulfoxide at 80℃; for 0.5h; Stage #2: 1,1,2,2-tetrabromoethane In dimethyl sulfoxide at 80℃; for 24h; | A 47% B n/a C n/a |
trimethyl phosphite
1,1,2,2-tetrabromoethane
A
dimethylphosphoric acid
B
1,1,2-tribromoethylene
Conditions | Yield |
---|---|
at 180℃; for 20h; | A 31% B 45% |
1,1,2,2-tetrabromoethane
1,2,3-tribromoferrocene
B
1,2,3,4,5-pentabromoferrocene
Conditions | Yield |
---|---|
With lithium tetramethylpiperidinide In tetrahydrofuran; hexane Schlenk techniques used under N2 or Ar, THF soln. of 4 (6.34 mmol) addedto freshly prepd. (from hexane soln. of nBuLi (15.8 mmol) and TMP (15.8 mmol) in THF) soln. of LiTMP and stirred for 3 h at -30°C, C2H2B r4 (15.8 mmol) added at -70°C; alloed to warm to room temp. for 18 h, H2O added, extracted with Et2O, dried over MgSO4, filtered, solvent removed under vac., recrystd. from petroleum ether/Et2O at 4°C; elem. anal.; | A 44% B 18% |
1,1,2,2-tetrabromoethane
2-bromo-3,4,5-triferrocenylthiophene
Conditions | Yield |
---|---|
With n-butyllithium In tetrahydrofuran; hexane (under Ar, Schlenk); Fe-complex dissolved in THF, cooled to -40°C, Li-salt in hexane added dropwise, warmed to -25°C for 35 min, cooled to -40°C, ligand added, warmed to ambient temp., stirred for 3 h; volatiles removed, alumina column chromy. with hexane:toluene 3:1, collected, solvent evapd., crystd. from n-hexane/toluene 5:1; elem. anal.; | 40% |
1,1,2,2-tetrabromoethane
1,1'-dibromoferrocene
A
ferrocene
B
1,2-dibromoferrocene
Conditions | Yield |
---|---|
With tetramethylpiperidine; n-butyl lithium In tetrahydrofuran; hexane Schlenk techniques used under N2 or Ar, THF soln. of (BrC5H4)2Fe (25.0 mmol) treated at -70°C with soln. of nBuLi (25.0 mmol), after 30 min TMP (25.0 mmol) added, stirred for 3 h at -30--40°C, C2H2Br4 (25.0 mmol) added at -70°C; allowed to warm to ambient temp. for >18 h, H2O added, aq. phase separated, extracted with Et2O, dried over MgSO4, evaporated, chromd. (neutral alumina, hexane), FcH removed by sublimation; NMR; | A n/a B 36% |
1,1,2,2-tetrabromoethane
5-bromo-2,9-di(undecan-6-yl)anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetraone
helical PDI
Conditions | Yield |
---|---|
With potassium acetate; palladium diacetate; potassium hydrogencarbonate In 1,4-dioxane; isopropyl alcohol at 110℃; for 10h; Schlenk technique; Inert atmosphere; Sealed tube; | 30% |
NH-pyrazole
1,1,2,2-tetrabromoethane
C
(Z)-1,2-bis(1H-pyrazol-1-yl)ethylene
D
1,1-bis(pyrazol-1-yl)-2-bromoethene
Conditions | Yield |
---|---|
Stage #1: NH-pyrazole With potassium hydroxide In dimethyl sulfoxide at 80℃; for 0.5h; Stage #2: 1,1,2,2-tetrabromoethane In dimethyl sulfoxide at 80℃; for 24h; | A 22% B n/a C n/a D n/a |
1,1,2,2-tetrabromoethane
bromoferrocene
1,2-dibromoferrocene
A
1,2,3-tribromoferrocene
Conditions | Yield |
---|---|
With lithium tetramethylpiperidinide In tetrahydrofuran Schlenk techniques used under N2 or Ar, THF soln. of mixt. (12.0 mmol) of 1 (52%) and 2 (48%) added to LiTMP (6.00 mmol) in THF and stirred for 4 h at -30°C, C2H2Br4 (6.09 mmol) added at -78°C, allowed to warm to room temp. for >16 h; quenched with H2O, extracted with CH2Cl2, organic layer washed with H2O,dried over MgSO4, solvent removed under vac., chromd. (neutral alumina, hexane); not isolated, detected by NMR; | A 18% B 7% |
1,1,2,2-tetrabromoethane
bromoferrocene
A
1,2-dibromoferrocene
B
1,2,3,4,5-pentabromoferrocene
Conditions | Yield |
---|---|
With lithium tetramethylpiperidinide In tetrahydrofuran Schlenk techniques used under N2 or Ar, THF soln. of 1 (4.76 mmol) addedto LiTMP (47.5 mmol) in THF and stirred for 5 h at -30°C, C2H2Br 4 (47.5 mmol) added at -78°C, allowed to warm to room temp. for >16 h; quenched with H2O, extracted with CH2Cl2, organic layer washed with aq. 1M HCl and H2O, dried over MgSO4, solvent removed under vac., chromd. (neutral alumina, hexane), concentrated, allowed to stand at 5°C for 16 h; elem.anal., XRD; | A n/a B 11% |
Conditions | Yield |
---|---|
With diethyl ether Irradiation.mit Sonnenlicht; |
1,1,2,2-tetrabromoethane
diethyl ether
sodium ethanolate
1,1,2-tribromoethylene
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