(Carbethoxymethylene)triphenylphosphorane
(Carbethoxymethylene)triphenylphosphorane (CAS 1099-45-2) is a Wittig-type reagent with a molecular weight of 348.37 g/mol. This organophosphorus compound is primarily utilized in organic synthesis for the formation of carbon-carbon double bonds, acting as a valuable tool in olefination reactions. It is a key intermediate for introducing ethoxycarbonylmethylene groups into various molecular structures, facilitating the synthesis of complex organic molecules.
- IUPAC
- (Ethoxycarbonylmethylene)triphenylphosphorane,Ethyl (triphenylphosphoranylidene)acetate
- Synonyms
- (Ethoxycarbonylmethylene)triphenylphosphoraneEthyl (triphenylphosphoranylidene)acetate

C-C Bond Formation
This reagent is instrumental in creating carbon-carbon double bonds through Wittig-type reactions. It enables chemists to efficiently couple an aldehyde or ketone with the phosphorane to form an alkene.
Olefination Reactions
As a Horner-Wadsworth-Emmons reagent, it participates in olefination reactions, which are crucial for synthesizing substituted alkenes with controlled stereochemistry, particularly useful in pharmaceutical and fine chemical synthesis.
Chemical Synthesis
It serves as a versatile building block in general organic synthesis, allowing for the introduction of an ester-functionalized vinyl group into target molecules.
Synthetic Reagents
This compound is classified as a synthetic reagent, valuable for researchers and industrial chemists seeking reliable methods for alkene synthesis and functional group transformations.
| Molecular weight | 348.37 |
|---|---|
| Linear formula | (C6H5)3P=CHCO2CH2CH3 |
| Assay | 95% |
| Storage temperature | 2-8°C |
| Melting point | 128-130 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is (Carbethoxymethylene)triphenylphosphorane primarily used for?
+
This compound is primarily used for C-C bond formation and olefination reactions in organic synthesis to create substituted alkenes with an ester functional group.
What is the CAS number and chemical formula for (Carbethoxymethylene)triphenylphosphorane?
+
The CAS number is 1099-45-2 and the linear formula is (C6H5)3P=CHCO2CH2CH3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies this product with a minimum assay of 95%. This is considered a technical or research grade; TSS does not represent it as USP, BP, or EP grade.
How should (Carbethoxymethylene)triphenylphosphorane be handled and stored?
+
This compound should be handled with appropriate personal protective equipment, including eyeshields and gloves. It is classified with GHS hazard WGK 2, and should be stored under refrigeration at 2-8°C.
How is (Carbethoxymethylene)triphenylphosphorane packed, shipped, and exported?
+
Tech Serve Solutions securely packs and ships this chemical reagent globally, adhering to all necessary regulations for safe transport and export.
How can I request a sample or a quote for (Carbethoxymethylene)triphenylphosphorane?
+
To request a sample or a quote, please contact our sales team directly through the website or by phone, providing the product name and CAS number (1099-45-2).
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis