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| CAS No.: | 1779-49-3 |
|---|---|
| Name: | Phosphonium,methyltriphenyl-, bromide (1:1) |
| Article Data: | 45 |
| Cas Database | |
| Molecular Structure: | |
|
|
|
| Formula: | C19H18P·Br |
| Molecular Weight: | 357.23 |
| Synonyms: | Methyltriphenylphosphonium bromide;Methyl(triphenyl)phosphonium bromide;Triphenylmethylphosphonium bromide;Phosphonium, methyltriphenyl-, bromide; |
| EINECS: | 217-218-9 |
| Density: | N/A |
| Melting Point: | 230-234 °C(lit.) |
| Boiling Point: | N/A |
| Flash Point: | >240°C |
| Solubility: | 400 g/L in water at 25 °C |
| Appearance: | white powder |
| Hazard Symbols: |
 Xn, Xi
|
| Risk Codes: | 20/21/22-36/37/38 |
| Safety: | 36/37-26 |
| Transport Information: | UN 1390 4.3/PG 2 |
| PSA: | 13.59000 |
| LogP: | 0.61430 |
benzaldehyde dimethyl acetal
triphenylphosphine hydrobromide
Methyltriphenylphosphonium bromide
| Conditions | Yield |
|---|---|
| 100% |
| Conditions | Yield |
|---|---|
| With hydrogen bromide at 110℃; for 8h; | 99.2% |
| With hydrogen bromide at 110℃; for 15h; | 97% |
| With hydrogen bromide In water at 120℃; for 22.5h; | 97% |
| Conditions | Yield |
|---|---|
| In benzene at 20℃; for 4h; | 99% |
| In benzene for 48h; Ambient temperature; | 95% |
| In acetonitrile |
| Conditions | Yield |
|---|---|
| In benzene | 99% |
triphenylphosphine hydrobromide
trimethyl orthoformate
Methyltriphenylphosphonium bromide
| Conditions | Yield |
|---|---|
| at 75℃; for 0.75h; Inert atmosphere; neat (no solvent); | 99% |
| at 70℃; | 70% |
methyl N-acetyl-α-triphenylphosphoniumglycinate bromide
A
(N-Acetylamino)methyltriphenylphosphonium bromide
B
Methyltriphenylphosphonium bromide
| Conditions | Yield |
|---|---|
| Stage #1: methyl N-acetyl-α-triphenylphosphoniumglycinate bromide at 25℃; under 1 - 2 Torr; for 1h; Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 100 - 115℃; for 1h; | A 98.6% B 87% |
| Conditions | Yield |
|---|---|
| With ammonium bromide at 110℃; for 4h; Sealed tube; | 96% |
| With ammonium bromide at 110℃; for 12h; | 96% |
| With cis,trans-24-bromotetracos-12-enal ethylene acetal |
A
C20H18N2O6
B
Methyltriphenylphosphonium bromide
C
α-(N-benzoylamino)methyltriphenylphosphonium bromide
| Conditions | Yield |
|---|---|
| Stage #1: methyl N-benzoyl-α-triphenylphosphonioglycinate bromide at 25℃; under 1 - 2 Torr; for 1h; Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 110 - 120℃; for 1h; | A 6.2% B 81% C 89.1% |
Br(1-)*C26H29NO3P(1+)
A
Br(1-)*C24H27NOP(1+)
B
Methyltriphenylphosphonium bromide
| Conditions | Yield |
|---|---|
| Stage #1: Br(1-)*C26H29NO3P(1+) at 25℃; under 1 - 2 Torr; for 1h; Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 120℃; for 1.5h; | A 78.7% B 44.5% |
Se-phenacyldimethylselenonium bromide
triphenylphosphine
A
Triphenylphosphine selenide
B
2-(methylselanyl)-1-phenylethan-1-one
C
Methyltriphenylphosphonium bromide
D
triphenylphenacylphosphonium bromide
| Conditions | Yield |
|---|---|
| In benzene for 6h; Heating; Further byproducts given; | A 7.3% B n/a C 13% D 73% |
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The Phosphonium,methyltriphenyl-, bromide (1:1), with the CAS registry number 1779-49-3, is also known as Triphenylmethylphosphonium bromide. It belongs to the product categories of Phosphonium Compounds; Synthetic Organic Chemistry; Wittig & Horner-Emmons Reaction; Wittig Reaction; C-C Bond Formation; Olefination; Wittig Reagents; Organophosphorus compound. Its EINECS number is 217-218-9. This chemical's molecular formula is C19H18P·Br and molecular weight is 357.22. What's more, its systematic name is Methyl(triphenyl)phosphonium bromide. This chemical is stable at common pressure and temperature, and it should be sealed and stored in a cool and dry place. Moreover, it should be protected from heat and fire.
Preparation of Phosphonium,methyltriphenyl-, bromide (1:1): this chemical can be prepared by triphenylphosphane and bromomethane at the ambient temperature. This reaction will need solvent benzene with the reaction time of 2 days. The yield is about 95%.
Uses of Phosphonium,methyltriphenyl-, bromide (1:1): it can be used to produce 9-isopropenyl-phenanthrene. It will need reagent NaNH2 and solvent tetrahydrofuran. The yield is about 94%.
When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It is irritating to eyes, respiratory system and skin and can cause burns. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing and gloves.
You can still convert the following datas into molecular structure:
(1)SMILES: [Br-].c1(ccccc1)[P+](c2ccccc2)(c3ccccc3)C
(2)Std. InChI: InChI=1S/C19H18P.BrH/c1-20(17-11-5-2-6-12-17,18-13-7-3-8-14-18)19-15-9-4-10-16-19;/h2-16H,1H3;1H/q+1;/p-1
(3)Std. InChIKey: LSEFCHWGJNHZNT-UHFFFAOYSA-M
