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A12753 Propargyltriphenylphosphonium bromide, 97%

CAS Number
Triphenylpropargylphosphonium bromide
Triphenyl-2-propyn-1-ylphosphonium bromide

Stock No. Size Price ($) Quantity Availability
A12753-06 5g 35.00
A12753-14 25g 122.00
A12753-22 100g 365.00
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Propargyltriphenylphosphonium bromide, 97%


Chemical Properties

Formula Weight
Melting point
Storage & Sensitivity
Hygroscopic. Ambient temperatures.
Soluble in methanol.


Propargyltriphenylphosphonium bromide can be used in the alcylation of amines. It is a commonly used as a Wittig reagent.


Hygroscopic. Store in cool dry place in tightly closed container. With good ventilation. Store away from oxidizing agent and water/moisture.

Literature References

M.H. Wahdan; A.A. Hermas; M.S. Morad. Corrosion inhibition of carbon-steels by propargyltriphenylphosphonium bromide in H2SO4 solution. Materials Chemistry and Physics. 2002, 76(2), 111-118.

Yeong-Soon Gal. A Facile Synthetic Method of Poly(Propargyltriphenylphosphonium-Tetraphenylborate) Via Ion Exchange Reaction of Poly(Propargyltriphenylphosphonium Bromide) Using Tetraphenylboron Sodium. Journal of Macromolecular Science, Part A: Pure and Applied Chemistry. 1995, 321031-1038.

Precursor of enynes by the Wittig reaction: Liebigs Ann. Chem., 682, 62 (1965); J. Org. Chem., 42, 200 (1977); see Appendix 1.

Readily undergoes additions with nucleophiles, e.g. alcohols or amines, to give 2-alkoxy or 2-alkylamino propenyl phosphonium salts. In these reactions, the reactive species is the allenic isomer, propadienyl triphenylphosphonium bromide: J. Org. Chem., 42, 200 (1977). By using a chiral alcohol, the subsequent base-promoted Wittig reaction with carbonyl compounds yields amino or alkoxy dienes which undergo face-selective Diels-Alder additions to dienophiles: J. Chem. Soc., Chem. Commun., 1785 (1995):

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Harmonized Tariff Code


  • A10772

    Triethylene glycol, 99%
  • A14380

    (Methoxymethyl)triphenylphosphonium chloride, 98+%
  • A16301

    (Methoxycarbonylmethyl)triphenylphosphonium bromide, 98+%
  • A18241

    p-Xylylenebis(triphenylphosphonium bromide), 96%
  • H27798

    1,3-Diisopropylimidazolium chloride, 97+%

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