- Triethylphosphine
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- $0.00 / 1Kg
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2024-11-26
- CAS:554-70-1
- Min. Order: 1Kg
- Purity: 98％; sales036@researchvip.com;18903931628;
- Supply Ability: 5Kg
- Triethylphosphine
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- $0.00 / 1KG
-
2024-11-21
- CAS:554-70-1
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 20 mt
- Triethylphosphine
-
- $0.00 / 1kg
-
2024-10-25
- CAS:554-70-1
- Min. Order: 1kg
- Purity: 99%
- Supply Ability: 100tons
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| | Triethylphosphine Basic information |
| | Triethylphosphine Chemical Properties |
| Melting point | -88°C | | Boiling point | 127-128 °C(lit.) | | density | 0.88 g/mL at 20 °C | | refractive index | n20/D 1.456(lit.) | | Fp | 1 °F | | form | liquid | | color | colorless | | Odor | vile, nauseating odor.stench | | Water Solubility | Insoluble in water. | | Sensitive | Air & Moisture Sensitive | | Merck | 14,9675 | | BRN | 969170 | | InChIKey | RXJKFRMDXUJTEX-UHFFFAOYSA-N | | CAS DataBase Reference | 554-70-1(CAS DataBase Reference) | | NIST Chemistry Reference | Phosphine, triethyl-(554-70-1) | | EPA Substance Registry System | Phosphine, triethyl- (554-70-1) |
| | Triethylphosphine Usage And Synthesis |
| Chemical Properties | Colorless Transparent Liquid | | Uses | Triethylphosphine is used as a ligand for arylation. It is used in organic synthesis. | | Uses | suzuki reaction | | Uses | In organic syntheses. | | Definition | ChEBI: Triethylphosphine is a tertiary phosphine. | | Safety Profile | Highly flammable liquid. Reactswith oxygen at low temperatures to form an explosiveproduct. When heated to decomposition it emits toxicfumes of POx. | | Synthesis |
Triethylphosphine is prepared most conveniently by the reaction of excess Grignard reagent on phosphorus trichloride or triphenylphosphite.
3CH3CH2MgBr + PCl3 → (CH3CH2)3P + 3MgBrCl
3CH3CH2MgBr + P(OC6H5)3 → P(CH3CH2)3 + 3C6H5-OMgCl
| | Purification Methods | All operations should be carried out in an efficient fume cupboard because it is flammable, toxic and has a foul odour. Purify the phosphine by fractional distillation at atmospheric pressure in a stream of dry N2, as it is oxidised by air to the oxide. In 300% excess of CS2 it forms Et3PCS2 (m 118-120o crystallising from MeOH) which decomposes in CCl4 to give Et3PS as a white solid m 94o when recrystallised from EtOH. [Sorettas & Isbell J Org Chem 27 273 1962, Henderson & Streuli J Am Chem Soc 82 5791 1960, pK: Henderson & Streuli J Am Chem Soc 82 5791 1960, see also trimethylphosphine.] Store it in sealed vials under N2. Alternatively, dissolve it in Et2O and shake it with a solution of AgI and KI to form the insoluble complex. Filter off the complex, dry it over P2O5 and the Et3P is regenerated by heating the complex in a tube attached to a vacuum system. [Hewitt & Holliday J Chem Soc 530 1953, Schettas & Isbell J Org Chem 27 2573 1962, Kosolapoff Organophosphorus Compounds, Wiley p 31 1950, Beilstein 4 IV 3431.] |
| | Triethylphosphine Preparation Products And Raw materials |
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