CAS 56-37-1C13H22ClNBenzyl Triethyl Ammonium Chloride
TEBAC — one of the most widely used quaternary ammonium phase transfer catalysts.
Crystalline powder
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C19H18BrPCAS 1779-49-3Phase Transfer Catalysts
Methyl Triphenyl Phosphonium Bromide
Key precursor to methylenetriphenylphosphorane for Wittig methylenation of carbonyl compounds.
Methyl triphenyl phosphonium bromide (MTPPB) is one of the most widely used quaternary phosphonium salts in synthetic organic chemistry. It serves as the direct precursor to the methylidene ylide in Wittig methylenation reactions, converting aldehydes and ketones into terminal alkenes. It also functions as a cationic phase transfer catalyst and building block in pharmaceutical synthesis. Grade, assay and packaging confirmed upon enquiry.
- CAS number
- 1779-49-3
- Formula
- C19H18BrP
- Form
- Crystalline powder
Price, minimum order quantity, packing and lead time are confirmed per enquiry.
Product information
Only identifiers and properties we hold for this product are listed. Anything not shown here is confirmed against your enquiry rather than assumed.
- Product name
- Methyl Triphenyl Phosphonium Bromide
- CAS number
- 1779-49-3
- Molecular formula
- C19H18BrP
- Molecular weight
- 357.22 g/mol
- Physical form
- Crystalline powder
- Appearance
- White to off-white crystalline powder
- Typical grade offered
- 99%+
- Melting point
- 230–235 °C
- Purity / assay
- Confirmed against your specification on enquiry
- Packing
- Confirmed on enquiry
- Origin
- Confirmed on enquiry
- Documentation
- Available on request for a specific enquiry
General technical information
General information: methyl triphenyl phosphonium bromide is moderately hygroscopic and sensitive to humidity. Material is kept in tightly closed containers in a dry, ventilated area. This note provides general chemical context.
Applications
- Wittig Methylenation
- Phase Transfer Catalysis
- Pharmaceutical Synthesis
- Organic Synthesis
Listed applications describe where this type of material is commonly used. Suitability for your process should be confirmed against the specification agreed for your order.
Also known as
- MTPPB
- Methyltriphenylphosphonium bromide
- (Methyl)triphenylphosphonium bromide
Industries served
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