(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide
Methyl 4-(triphenylphosphonio)crotonate bromide
CAS: 2181-98-8
Molecular Formula: C23H22BrO2P
(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide - Names and Identifiers
| Name | Methyl 4-(triphenylphosphonio)crotonate bromide |
| Synonyms | METHYL-4-(TRIPHENYLPHOSPONIO)CROTONATE BROMIDE Methyl 4-(triphenylphosphonio)crotonate bromide METHYL 4-(TRIPHENYLPHOSPHONIO)CROTONATE BROMIDE (4-methoxy-4-oxo-2-butenyl)triphenylphosphonium bromide (4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide (3-Methoxycarbonyl-2-propenyl)triphenylphosphonium bromide (E)-4-methoxy-4-oxo-but-2-enyl]-triphenyl-phosphonium bromide [(2E)-4-methoxy-4-oxobut-2-en-1-yl](triphenyl)phosphonium bromide |
| CAS | 2181-98-8 |
| EINECS | 218-557-5 |
| InChI | InChI=1/C23H22O2P.BrH/c1-25-23(24)18-11-19-26(20-12-5-2-6-13-20,21-14-7-3-8-15-21)22-16-9-4-10-17-22;/h2-18H,19H2,1H3;1H/q+1;/p-1/b18-11+ |
(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide - Physico-chemical Properties
| Molecular Formula | C23H22BrO2P |
| Molar Mass | 441.3 |
| Melting Point | 175°C (dec.) |
| BRN | 4173385 |
| Storage Condition | Room Temprature |
| Sensitive | Hygroscopic |
| MDL | MFCD00031575 |
(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide - Risk and Safety
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide - Introduction
Methyl 4-(triphenylphosphonium) crotonate bromide (Methyl 4-(triphenylphosphonio)crotonate bromide) is an organic compound with the chemical formula C25H21BrO2P.
The properties of the compound are as follows:
-Appearance: White or light yellow crystal or crystalline powder
-Solubility: Soluble in organic solvents, such as alcohol, ether, etc
-Thermal stability: decomposition at high temperature
Methyl 4-(triphenylphosphonio)crotonate bromide is commonly used as a reagent in organic synthetic chemistry. Specific uses include:
-Catalyst: It can be used as a catalyst for organic synthesis reactions, such as boron alcohol esterification of olefins and Michael addition reactions.
-Inducer: It can induce certain chemical reactions, such as the reaction of thiols and aldehydes in the aqueous phase.
-Reagent: Used as a reagent in some chemical analysis methods.
The method of preparing Methyl 4-(triphenylphosphonio)crotonate bromide is generally through the following steps:
1. The crotonate methyl ester (methyl crotonate) and triphenyl phosphine (triphenyl phosphine) are mixed and reacted to generate crotonate methyl ester phosphonium salt (crotonate phosphonium salt).
2. Add hydrogen bromide (HBr) into the reaction system to make the reaction of phosphonium salt of Methyl crotonate and HBr, and form the final product Methyl 4-(triphenylphosphonio)crotonate bromide.
3. The product was crystallized and purified to give the desired compound.
For safety information on this compound, note the following:
-The substance may be irritating, and necessary safety measures should be taken when exposed, such as wearing gloves, goggles, etc.
-Avoid inhaling the gas, dust or smoke of the compound.
-Should be stored in a dry, cool place and avoid contact with oxidizing agents.
The properties of the compound are as follows:
-Appearance: White or light yellow crystal or crystalline powder
-Solubility: Soluble in organic solvents, such as alcohol, ether, etc
-Thermal stability: decomposition at high temperature
Methyl 4-(triphenylphosphonio)crotonate bromide is commonly used as a reagent in organic synthetic chemistry. Specific uses include:
-Catalyst: It can be used as a catalyst for organic synthesis reactions, such as boron alcohol esterification of olefins and Michael addition reactions.
-Inducer: It can induce certain chemical reactions, such as the reaction of thiols and aldehydes in the aqueous phase.
-Reagent: Used as a reagent in some chemical analysis methods.
The method of preparing Methyl 4-(triphenylphosphonio)crotonate bromide is generally through the following steps:
1. The crotonate methyl ester (methyl crotonate) and triphenyl phosphine (triphenyl phosphine) are mixed and reacted to generate crotonate methyl ester phosphonium salt (crotonate phosphonium salt).
2. Add hydrogen bromide (HBr) into the reaction system to make the reaction of phosphonium salt of Methyl crotonate and HBr, and form the final product Methyl 4-(triphenylphosphonio)crotonate bromide.
3. The product was crystallized and purified to give the desired compound.
For safety information on this compound, note the following:
-The substance may be irritating, and necessary safety measures should be taken when exposed, such as wearing gloves, goggles, etc.
-Avoid inhaling the gas, dust or smoke of the compound.
-Should be stored in a dry, cool place and avoid contact with oxidizing agents.
Last Update：2024-04-10 22:29:15
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CAS: 2181-98-8
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CAS: 2181-98-8
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
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