Cas no 2181-98-8 (Methyl 4-(triphenylphosphonio)crotonate bromide)
Methyl 4-(triphenylphosphonio)crotonate bromide is a phosphonium salt widely used as a key intermediate in organic synthesis, particularly in Wittig reactions for the formation of α,β-unsaturated esters. Its highly reactive ylide moiety facilitates efficient olefination, enabling the synthesis of complex alkenes with precise stereocontrol. The compound is valued for its stability under standard conditions and compatibility with a range of substrates, making it a versatile reagent in pharmaceutical and fine chemical applications. The presence of the ester group further enhances its utility in subsequent functionalization steps. It is typically handled under inert conditions to maintain reactivity and purity.
2181-98-8 structure
Product Name:Methyl 4-(triphenylphosphonio)crotonate bromide
CAS No:2181-98-8
MF:C23H22BrO2P
MW:441.297346591949
MDL:MFCD00031575
CID:84165
PubChem ID:6450201
Update Time:2025-06-08
Methyl 4-(triphenylphosphonio)crotonate bromide Chemical and Physical Properties
Names and Identifiers
-
- Methyl 4-(triphenylphosphonio)crotonate bromide
- (3-Methoxycarbonyl-2-propenyl)triphenylphosphonium bromide
- (3-(METHOXYCARBONYL)-2-PROPEN-1-YL)TRIPHENYLPHOSPHONIUM BROMIDE
- (4-Methoxy-4-oxo-2-butenyl)triphenylphosphonium bromide
- [(E)-4-methoxy-4-oxidanylidene-but-2-enyl]-triphenyl-phosphanium bromide
- SCHEMBL2449047
- (4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide
- A928597
- (E)-(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphonium bromide
- (E)-(4-methoxy-4-oxobut-2-enyl)triphenylphosphonium bromide
- A815682
- SCHEMBL2449046
- CAA18198
- AKOS017345142
- [(2E)-4-methoxy-4-oxobut-2-en-1-yl]triphenylphosphanium bromide
- EINECS 218-557-5
- 72967-11-4
- 2181-98-8
- (E)-(4-Methoxy-4-oxobut-2-en-1-yl)triphenylphosphoniumbromide
- [(E)-4-methoxy-4-oxobut-2-enyl]-triphenylphosphonium bromide
- ?METHYL 4-(TRIPHENYLPHOSPHONIO)CROTONATE BROMIDE
- MFCD00031575
- [(E)-4-methoxy-4-oxobut-2-enyl]-triphenylphosphanium;bromide
- KSTXYAKHACCZSD-NWBUNABESA-M
-
- MDL： MFCD00031575
- Inchi： 1S/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+;
- InChI Key： KSTXYAKHACCZSD-NWBUNABESA-M
- SMILES： [Br-].[P+](C1C=CC=CC=1)(C1C=CC=CC=1)(C1C=CC=CC=1)C/C=C/C(=O)OC
- BRN： 4173385
Computed Properties
- Exact Mass: 440.05400
- Monoisotopic Mass: 440.054079
- Isotope Atom Count: 0
- Hydrogen Bond Donor Count: 0
- Hydrogen Bond Acceptor Count: 2
- Heavy Atom Count: 27
- Rotatable Bond Count: 7
- Complexity: 409
- Covalently-Bonded Unit Count: 2
- Defined Atom Stereocenter Count: 0
- Undefined Atom Stereocenter Count : 0
- Defined Bond Stereocenter Count: 1
- Undefined Bond Stereocenter Count: 0
- Surface Charge: 0
- Topological Polar Surface Area: 26.3
Experimental Properties
- Color/Form: powder
- Density: No date available
- Melting Point: 175°C (dec.)
- Boiling Point: °Cat760mmHg
- Flash Point: °C
- PSA: 39.89000
- LogP: 0.71370
- Solubility: Not determined
- Sensitiveness: Hygroscopic
- Vapor Pressure: No date available
Methyl 4-(triphenylphosphonio)crotonate bromide Security Information
- Signal Word：warning
- Hazard Statement： H303+H313+H333
- Warning Statement： P264+P280+P305+P351+P338+P337+P313
- Hazard Category Code： 36/37/38
- Safety Instruction： S26-S36
- Safety Term：S26;S36
- Risk Phrases：R36/37/38
- Storage Condition：storage at -4℃ (1-2weeks), longer storage period at -20℃ (1-2years)
Methyl 4-(triphenylphosphonio)crotonate bromide Pricemore >>
| Related Categories | No. | Product Name | Cas No. | Purity | Specification | Price | update time | Inquiry |
|---|---|---|---|---|---|---|---|---|
| SHANG HAI XIAN DING Biotechnology Co., Ltd. | F-WY422-1g |
Methyl 4-(triphenylphosphonio)crotonate bromide |
2181-98-8 | 98% | 1g |
￥278.0 | 2022-02-28 | |
| abcr | AB118065-5 g |
Methyl 4-(triphenylphosphonio)crotonate bromide; 98% |
2181-98-8 | 5g |
€84.00 | 2022-06-03 | ||
| abcr | AB118065-10 g |
Methyl 4-(triphenylphosphonio)crotonate bromide; 98% |
2181-98-8 | 10g |
€118.00 | 2022-06-03 | ||
| abcr | AB118065-50 g |
Methyl 4-(triphenylphosphonio)crotonate bromide; 98% |
2181-98-8 | 50g |
€433.00 | 2022-06-03 | ||
| Chemenu | CM344763-5g |
Methyl 4-(triphenylphosphonio)crotonate bromide |
2181-98-8 | 95%+ | 5g |
$172 | 2022-06-11 | |
| Chemenu | CM344763-25g |
Methyl 4-(triphenylphosphonio)crotonate bromide |
2181-98-8 | 95%+ | 25g |
$686 | 2022-06-11 | |
| A FA AI SHA ， SAI MO FEI SHI ER KE JI QI XIA GONG SI | A10443-2g |
Methyl 4-(triphenylphosphonio)crotonate bromide, 98% |
2181-98-8 | 98% | 2g |
￥434.00 | 2023-05-15 | |
| A FA AI SHA ， SAI MO FEI SHI ER KE JI QI XIA GONG SI | A10443-5g |
Methyl 4-(triphenylphosphonio)crotonate bromide, 98% |
2181-98-8 | 98% | 5g |
￥664.00 | 2023-05-15 | |
| A FA AI SHA ， SAI MO FEI SHI ER KE JI QI XIA GONG SI | A10443-10g |
Methyl 4-(triphenylphosphonio)crotonate bromide, 98% |
2181-98-8 | 98% | 10g |
￥940.00 | 2023-05-15 | |
| A FA AI SHA ， SAI MO FEI SHI ER KE JI QI XIA GONG SI | A10443-50g |
Methyl 4-(triphenylphosphonio)crotonate bromide, 98% |
2181-98-8 | 98% | 50g |
￥4053.00 | 2023-05-15 |
Methyl 4-(triphenylphosphonio)crotonate bromide Suppliers
Amadis Chemical Company Limited
Gold Member
Audited Supplier
(CAS:2181-98-8)Methyl 4-(triphenylphosphonio)crotonate bromide
Order Number:A928597
Stock Status:in Stock
Quantity:5g
Purity:99%
Pricing Information Last Updated:Friday, 30 August 2024 14:55
Price ($):154.0
Email:[email protected]
Methyl 4-(triphenylphosphonio)crotonate bromide Related Literature
-
José M. Rivera,Mariana Martín-Hidalgo,Jean C. Rivera-Ríos Org. Biomol. Chem., 2012,10, 7562-7565
-
Sandip Gangadhar Balwe,Yeon Tae Jeong Org. Biomol. Chem., 2018,16, 1287-1296
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Adeline Huiling Loo,Alessandra Bonanni,Martin Pumera Analyst, 2013,138, 467-471
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Ravi Kumar Yadav,R. Govindaraj Phys. Chem. Chem. Phys., 2020,22, 26876-26886
2181-98-8 (Methyl 4-(triphenylphosphonio)crotonate bromide) Related Products
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- 103411-56-9(Phosphonium, [(2,5-dihydro-5-oxo-3-furanyl)methyl]triphenyl-, bromide)
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- 78201-71-5(Phosphonium, (4-ethoxy-3-methyl-4-oxo-2-butenyl)triphenyl-, bromide)
- 797050-62-5(Phosphonium, [(2E)-3-carboxy-2-methyl-2-propenyl]triphenyl-, bromide)
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Recommended suppliers
Amadis Chemical Company Limited
(CAS:2181-98-8)Methyl 4-(triphenylphosphonio)crotonate bromide
Purity:99%
Quantity:5g
Price ($):154.0