Ethynyltriethylsilane
Ethynyltriethylsilane
CAS: 1777-03-3
Molecular Formula: C8H16Si
Ethynyltriethylsilane - Names and Identifiers
| Name | Ethynyltriethylsilane |
| Synonyms | Ethynyltriethylsilane TRIETHYLETHYNYLSILANE ETHYNYLTRIETHYLSILANE Triethylsilyl)acetylen triethyl(ethynyl)silane (TRIETHYLSILYL)ACETYLENE (Triethylsilyl)acetylene EthynyltriethylsilaneTriethylethynylsilane |
| CAS | 1777-03-3 |
| EINECS | 628-759-9 |
| InChI | InChI=1/C8H16Si/c1-5-9(6-2,7-3)8-4/h1H,6-8H2,2-4H3 |
Ethynyltriethylsilane - Physico-chemical Properties
| Molecular Formula | C8H16Si |
| Molar Mass | 140.3 |
| Density | 0.783g/mLat 25°C(lit.) |
| Melting Point | 95-97 °C(Solv: chloroform (67-66-3); hexane (110-54-3)) |
| Boling Point | 136 °C |
| Flash Point | 63°F |
| Vapor Presure | 7.75mmHg at 25°C |
| Appearance | liquid |
| Specific Gravity | 0.783 |
| Color | colorless |
| BRN | 1743814 |
| Storage Condition | Flammables area |
| Sensitive | 4: no reaction with water under neutral conditions |
| Refractive Index | n20/D 1.433(lit.) |
Ethynyltriethylsilane - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN 1993 3/PG 2 |
| WGK Germany | 3 |
| TSCA | No |
| HS Code | 29319090 |
| Hazard Class | 3 |
| Packing Group | II |
Ethynyltriethylsilane - Reference Information
| Introduction | triethylsilylacetylene, also known as triethylsilylacetylene, is the most commonly used alkyne reagent, there has been a very broad market demand. Triethylsilynes are mainly used for the Sonagoshi coupling reaction with aryl halides to form arylacetylenes, which is an important method for the preparation of arylacetylenes. |
| Application | triethylsilylacetylene can be mainly used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development process and chemical production process. |
| synthesis method | CN201610096292.2 provides a readily available raw material, simple synthesis process, good controllability, synthetic Method of triethylsilylacetylene with good repeatability. The object of the invention can be achieved by the following technical solutions: a synthesis method of triethylsilylacetylene, which uses triethylhalosilane and acetylene metallization as raw materials, triethyl halosilane was added to the organic solution of acetylene metallization, heated and refluxed for 6-13 hours, then cooled to room temperature, ice water was added to quench the reaction, followed by distillation under reduced pressure, the fractions at 42-48 °c were collected to produce triethylsilylacetylene. The method specifically comprises the following steps:(1) preparing an organic solution of acetylene metallization, according to the molar ratio of acetylene metallization to triethyl halosilane being 1-1.3:1, under the protection of inert gas, slowly add triethyl halosilane to the organic solution of the acetylene metallization at 0-5 ℃;(2) slowly raise the temperature to 60-100 ℃ after the triethyl halosilane is added dropwise, reflux reaction for 6-10 hours, cooling to room temperature, adding ice water to quench the reaction, Extraction, retention of organic phase;(3) organic phase after washing, drying, Suction filtration, and then vacuum distillation, collecting 42-48 ° C. Fraction, washing, remove inorganic salts can be. |
Last Update：2024-04-10 22:29:15
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