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CAS No.: | 640-21-1 |
---|---|
Name: | 1,2-DIBROMO-3,3-DIMETHYLBUTANE |
Article Data: | 22 |
Molecular Structure: | |
Formula: | C6H12 Br2 |
Molecular Weight: | 243.969 |
Synonyms: | 1,2-Dibromo-3,3-dimethylbutane;NSC 246202 |
Density: | 1.61 g/mL at 25 °C(lit.) |
Boiling Point: | 73 °C3 mm Hg(lit.) |
Flash Point: | 183 °F |
Hazard Symbols: | Xn |
Risk Codes: | R20/21/22; R36/37/38 |
PSA: | 0.00000 |
LogP: | 3.19090 |
Conditions | Yield |
---|---|
With bromine for 0.133333h; Phase-vanishing reaction with phase screen; Neat (no solvent); Darkness; | 94% |
With carbon tetrabromide; bromine In tetrachloromethane; ethanol 1.) -20 deg C, 2.5 h; 2.) up to r. t., overnight; | 89% |
With bromine In hexane at 20℃; | 88% |
tert-butylethylene
N-bromo-1,8-naphthalenedicarboximide
A
1,2-dibromo-3,3-dimethylbutane
B
N-(2-bromo-3,3-dimethylbutyl)-1,8-naphthalenedicarboximide
Conditions | Yield |
---|---|
In dichloromethane at 17℃; Irradiation; | A 4.1% B 68% |
methanol
tert-butylethylene
A
1,2-dibromo-3,3-dimethylbutane
B
2-bromo-1-methoxy-3,3-dimethyl-butane
Conditions | Yield |
---|---|
With bromine unter Lichtausschluss; |
tert-butylethylene
A
1,4-dibromo-2,3-bis-bromomethyl-but-2-ene
B
3,3-dimethylbutyl bromide
C
1,2-dibromo-3,3-dimethylbutane
Conditions | Yield |
---|---|
With bromine | |
With bromine for 2h; | |
With bromine In chloroform at -78℃; for 5h; |
N-Bromosuccinimide
tert-butylethylene
A
Succinimide
B
N-(2-bromo-3,3.-dimethyl-1-butyl)succinimide
C
1,2-dibromo-3,3-dimethylbutane
Conditions | Yield |
---|---|
In dichloromethane; benzene at 14 - 15℃; Irradiation; | A 0.58 mmol B 0.12 mmol C 0.33 mmol |
2,2-dimethyl-3-butyne
A
3,3-dimethylbutyl bromide
B
1,2-dibromo-3,3-dimethylbutane
Conditions | Yield |
---|---|
With organoaluminiumhydride; water; bromine 2) -40 to 20 deg C; Yield given. Multistep reaction. Yields of byproduct given; |
tert-butylethylene
ethanol
A
1,2-dibromo-3,3-dimethylbutane
B
2-bromo-1-ethoxy-3,3-dimethylbutane
Conditions | Yield |
---|---|
With 2,6-di-tert-butyl-4-methyl-phenol; N,N'-dibromo-2,5-piperazinedione (NBP) In dichloromethane for 0.5h; Ambient temperature; Irradiation; | A 20 % Chromat. B 11 % Chromat. |
tert-butylethylene
C16H36N(1+)*C4H4BrNO2*Br(1-)
1,2-dibromo-3,3-dimethylbutane
Conditions | Yield |
---|---|
With C16H36N(1+)*C4H4BrNO2*Br(1-) In acetonitrile for 3h; Mechanism; Heating; var. bromino reagent; |
tert-butylethylene
A
1,2-dichloro-3,3-dimethyl-butane
B
1,2-dibromo-3,3-dimethylbutane
Conditions | Yield |
---|---|
With bromine chloride In dichloromethane at 0℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
Conditions | Yield |
---|---|
With 18-crown-6 ether; potassium tert-butylate In Petroleum ether at 60℃; for 2h; | 91% |
With potassium hydroxide; tetraoctyl ammonium bromide In Petroleum ether at 90℃; for 6h; | 86% |
With potassium tert-butylate; 18-crown-6 ether In Petroleum ether | 84% |
With potassium hydroxide; 2,5-dimethyl-2,5-hexanediol at 100℃; for 0.75h; | 80% |
With potassium tert-butylate Heating; |