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Basic Information
| CAS No.: | 593-90-8 |
|---|---|
| Name: | TRIMETHYLBORON |
| Article Data: | 145 |
| Molecular Structure: | |
|
|
|
| Formula: | C3H9 B |
| Molecular Weight: | 55.9155 |
| Synonyms: | Trimethylborane;Trimethylboron |
| EINECS: | 209-816-3 |
| Density: | 0.559 g/cm3 |
| Melting Point: | -161,5°C |
| Boiling Point: | 20 °C at 760 mmHg |
| Flash Point: | °C |
| Appearance: | colorless gas |
| Hazard Symbols: | F,C |
| Risk Codes: | 11-17-34 |
| Safety: | The gas ignites spontaneously in air or when mixed with chlorine. When heated to decomposition it emits acrid smoke and irritating fumes. See also BORANES and BORON COMPOUNDS. |
| PSA: | 0.00000 |
| LogP: | 1.37060 |
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Synthetic route
Conditions
| Conditions | Yield |
|---|---|
| at 130.0°C, 74.1 Torr equilibrium; | A 99.6% B 99.6% |
| at 130.0°C, 74.1 Torr equilibrium; | A 99.6% B 99.6% |
| at 54.8°C, 57.6 Torr equilibrium; | A 90.8% B 90.8% |
| at 54.8°C, 57.6 Torr equilibrium; | A 90.8% B 90.8% |
- 5419-55-6
Triisopropyl borate
- 917-54-4
methyllithium
B
- 593-90-8
trimethylborane
C
- 86595-27-9
diisopropoxymethylborane
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride In diethyl ether under N2; to cold (-78 °C) soln. of boron compd. in Et2O slowly added MeLi, stirred for 0.5 h, warmed to room temp., stirred for 0.5 h,Li(BMe4) detected by (11)B NMR, cooled to 0 °C, added soln. of HCl in Et2O, stirred for 15 min, warmed; not isolated, monitored by (11)B NMR; | A 1% B <1 C 98% |
...Expand
- 22238-17-1
tri-sec-butylborate
- 917-54-4
methyllithium
B
- 86595-29-1
CH3B(OCH(CH3)CH2CH3)2
C
- 593-90-8
trimethylborane
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride In diethyl ether under N2; to cold (-78 °C) soln. of boron compd. in Et2O slowly added MeLi, stirred for 0.5 h, warmed to room temp., stirred for 0.5 h,Li(BMe4) detected by (11)B NMR, cooled to 0 °C, added soln. of HCl in Et2O, stirred for 15 min, warmed; not isolated, monitored by (11)B NMR; | A 1% B 98% C <1 |
...Expand
- 13195-76-1
triisobutyl borate
- 917-54-4
methyllithium
B
- 86595-30-4
CH3B(OCH2CH(CH3)2)2
C
- 593-90-8
trimethylborane
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride In diethyl ether under N2; to cold (-78 °C) soln. of boron compd. in Et2O slowly added MeLi, stirred for 0.5 h, warmed to room temp., stirred for 0.5 h,Li(BMe4) detected by (11)B NMR, cooled to 0 °C, added soln. of HCl in Et2O, stirred for 15 min, warmed; not isolated, monitored by (11)B NMR; | A 1% B 98% C <1 |
...Expand
- 917-54-4
methyllithium
- 94242-85-0
2,4,4,5,5-pentamethyl-[1,3,2]dioxaborolane
A
- 97782-68-8
(CH3)2BOC(CH3)2C(CH3)2OH
B
- 593-90-8
trimethylborane
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride In diethyl ether byproducts: LiCl; 1 equiv of MeLi slowly adding to a soln. of the boronic ester at -78°C, stirring for 3 h at the same temp., 1 equiv of anhydrous HCl in Et2O adding, warming to room temp., stirring for 15 min; the content was detd. by (11)B NMR spectrum; | A 98% B <1 |
...Expand
- 856617-42-0
trimethyl-borane; compound with trimethylamine
A
- 593-90-8
trimethylborane
B
- 75-50-3
trimethylamine
Conditions
| Conditions | Yield |
|---|---|
| at 111.3°C, 64.5 Torr equilibrium; | A 96% B 96% |
| at 111.3°C, 64.5 Torr equilibrium; | A 96% B 96% |
| at 65.8°C, 47.5 Torr equilibrium; | A 63.8% B 63.8% |
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride In diethyl ether byproducts: LiCl, 2-propanol; 2 equiv of MeLi slowly adding to a soln. of the boronic ester at -78°C, stirring for 3 h at the same temp., 1 equiv of anhydrous HCl in Et2O adding, warming to room temp., stirring for 15 min; the content was detd. by (11)B NMR spectrum; | A 95% B <1 |
| With hydrogenchloride In diethyl ether byproducts: LiCl, 2-propanol; 1 equiv of MeLi slowly adding to a soln. of the boronic ester at -78°C, stirring for 3 h at the same temp., 1 equiv of anhydrous HCl in Et2O adding, warming to room temp., stirring for 15 min; the content was detd. by (11)B NMR spectrum; | A 95% B <1 |
...Expand
- 917-54-4
methyllithium
- 51901-48-5
2-methyl-[1,3,2]dioxaborinane
A
- 765242-40-8
(CH3)2BO(CH2)3OH
B
- 593-90-8
trimethylborane
Conditions
| Conditions | Yield |
|---|---|
| With hydrogenchloride In diethyl ether byproducts: LiCl; 2 equiv of MeLi slowly adding to a soln. of the boronic ester at -78°C, stirring for 3 h at the same temp., 1 equiv of anhydrous HCl in Et2O adding, warming to room temp., stirring for 15 min; the content was detd. by (11)B NMR spectrum; | A 92% B <7 |
...Expand
- 62948-84-9
bis[tert-butyl(dimethylboryl)amino]methylphosphanoxide
A
- 593-90-8
trimethylborane
B
- 62948-89-4
1,3-di-tert-butyl-2,4-dimethyl-1,3,2,4-diazaphosphaboretidine-2-oxide
Conditions
| Conditions | Yield |
|---|---|
| In neat (no solvent) heating at 160-170°C for 5 h in a stream of N2 with condensationof the volatiles in a trap cooled at -78°C;; distn.; elem. anal.;; | A 88% B 75% |
Conditions
| Conditions | Yield |
|---|---|
| In diethyl ether at room temp. for 2 h, molar ratio BCl3:ether:MeMgBr01:2:3; by fractional condensation; | 87% |
| In diethyl ether at room temp. for 2 h, molar ratio BCl3:ether:MeMgBr01:2:3; by fractional condensation; | 87% |
Raw Materials
Downstream Products
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TRIMETHYLBORON
Chemistry
MF: C3H9B
MW: 55.91
EINECS: 209-816-3
mp -161,5°C
bp -20,2°C
density 0,625 g/cm3
IUPAC Name: trimethylborane
MW: 55.91
EINECS: 209-816-3
mp -161,5°C
bp -20,2°C
density 0,625 g/cm3
IUPAC Name: trimethylborane
Safety Profile
The gas ignites spontaneously in air or when mixed with chlorine. When heated to decomposition it emits acrid smoke and irritating fumes. See also BORANES and BORON COMPOUNDS.
Hazard Codes F,C
Risk Statements 11-17-34
Safety Statements 9-16-23-45-43-36/37/39-26-7
RIDADR 3160
Hazard Codes F,C
Risk Statements 11-17-34
Safety Statements 9-16-23-45-43-36/37/39-26-7
RIDADR 3160