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1530-32-1 Usage

Chemical Description

Ethyltriphenylphosphonium bromide is a quaternary ammonium salt used as a phase transfer catalyst.


Ethyltriphenylphosphonium bromide is a white to off-white crystalline powder that is a type of phosphonium salt. It is known for its versatile applications in various chemical reactions and industries due to its unique chemical properties.


1. Used in Suzuki Reaction:
Ethyltriphenylphosphonium bromide is used as a catalyst in the Suzuki reaction, a widely employed method for the formation of carbon-carbon bonds, particularly in the synthesis of biaryl compounds.
2. Used as a Phase Transfer Catalyst (PTC):
Ethyltriphenylphosphonium bromide serves as a phase transfer catalyst, facilitating reactions between two immiscible phases (usually an aqueous and an organic phase). It is particularly useful in accelerating the cure of phenolic-based epoxy resins, certain fluoroelastomer resins, and thermosetting powder coatings.
3. Used as a Wittig Reagent:
Ethyltriphenylphosphonium bromide is used as a Wittig reagent in organic chemistry, which is a key component in the Wittig reaction for the synthesis of alkenes from aldehydes and ketones.
4. Used in Antiviral Applications:
Ethyltriphenylphosphonium bromide and other phosphonium salts have shown antiviral activity, making them potential candidates for the development of new antiviral drugs.
5. Used as a Pharmaceutical Intermediate:
Ethyltriphenylphosphonium bromide is utilized as an intermediate in the synthesis of various pharmaceutical compounds, contributing to the development of new medications.
6. Used in Organic Synthesis:
Ethyltriphenylphosphonium bromide acts as a reactant in the synthesis of D-amino acids from L-cysteine-derived thiazolidines, Leiodolide A through aldol reactions, and Horner-Wadsworth-Emmons olefination. It is also used in the preparation of cycloalkanoindolines through diastereoselective intramolecular imino-ene reactions and as a reagent in solid-state metathesis polycondensation to prepare alkyl-dipropenylthiophene monomers.
7. Used in Mizoroki-Heck Cyclization and Cascading Tsuji-Trost Cyclization Reactions:
Ethyltriphenylphosphonium bromide is employed as a catalyst in Mizoroki-Heck cyclization and cascading Tsuji-Trost cyclization reactions, which are important synthetic methods in organic chemistry for constructing complex molecular structures.

Flammability and Explosibility


Purification Methods

Recrystallise it from H2O and dry it in high vacuum at 100o. IR has bands at 1449, 1431 and 997cm-1 . [Wittig & Wittenberg Justus Liebigs Ann Chem 606 1 1957, Bergmann & Dusza J Org Chem 23 1245 1958, Beilstein 16 IV 982.]

Check Digit Verification of cas no

The CAS Registry Mumber 1530-32-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,3 and 0 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1530-32:
51 % 10 = 1
So 1530-32-1 is a valid CAS Registry Number.

1530-32-1 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • TCI America

  • (E0382)  Ethyltriphenylphosphonium Bromide  >98.0%(HPLC)(T)

  • 1530-32-1

  • 25g

  • 240.00CNY

  • Detail
  • TCI America

  • (E0382)  Ethyltriphenylphosphonium Bromide  >98.0%(HPLC)(T)

  • 1530-32-1

  • 100g

  • 490.00CNY

  • Detail
  • TCI America

  • (E0382)  Ethyltriphenylphosphonium Bromide  >98.0%(HPLC)(T)

  • 1530-32-1

  • 500g

  • 1,650.00CNY

  • Detail
  • Alfa Aesar

  • (B23096)  Ethyltriphenylphosphonium bromide, 98+%   

  • 1530-32-1

  • 25g

  • 287.0CNY

  • Detail
  • Alfa Aesar

  • (B23096)  Ethyltriphenylphosphonium bromide, 98+%   

  • 1530-32-1

  • 100g

  • 895.0CNY

  • Detail
  • Alfa Aesar

  • (B23096)  Ethyltriphenylphosphonium bromide, 98+%   

  • 1530-32-1

  • 500g

  • 3526.0CNY

  • Detail
  • Aldrich

  • (E50604)  Ethyltriphenylphosphoniumbromide  99%

  • 1530-32-1

  • E50604-25G

  • 333.45CNY

  • Detail
  • Aldrich

  • (E50604)  Ethyltriphenylphosphoniumbromide  99%

  • 1530-32-1

  • E50604-100G

  • 1,134.90CNY

  • Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name Ethyltriphenylphosphonium bromide

1.2 Other means of identification

Product number -
Other names Ethyl triphenyl phosphonium bromide

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1530-32-1 SDS

1530-32-1Relevant articles and documents


Kabachnik, M. I.,Zakharov, L. S.,Kudryatsev, I. Yu.

, p. 2553 - 2556 (1989)

It was shown that it is possible to use a series of ammonium and phosphonium salts as effective catalysts for the preparative synthesis of tris(polyfluoroalkyl)phosphates.The effect of the structure of substituted ammonium salts on their catalytic activity was studied in the phosphorylation of 1,1-dihydroperfluorobutanol by phosphorus oxychloride.It was determined that the reaction rate is effected not only by the solubility of the salt, but also by the nature of the ion pair and the steric access of the onium center for solvation by phosphoryl compounds.

Nucleophilic 1,1-Difluoroethylation with Fluorinated Phosphonium Salt

Deng, Zuyong,Liu, Can,Zeng, Xian-Liang,Lin, Jin-Hong,Xiao, Ji-Chang

, p. 12084 - 12090 (2016)

The fluorinated phosphonium salt (Ph3P+CF2CH3 BF4-) was shown to act as a nucleophilic 1,1-difluoroethylation agent to enable difluoroethylation of aldehydes and imines.

Conformational Control of Initiation Rate in Hoveyda-Grubbs Precatalysts

Gregg, Zackary R.,Griffiths, Justin R.,Diver, Steven T.

, p. 1526 - 1533 (2018)

When the coordinating isopropyl ether of the Hoveyda precatalyst is replaced by a cyclohexyl ether, it is possible to control the substituent's conformation in either the equatorial or axial position. A stereodivergent synthesis of axial and equatorial cyclohexyl vinyl ethers provided access to new ruthenium metathesis precatalysts by carbene exchange. The conformational disposition of the coordinating aryl ether was found to have a significant effect on the reactivity of the precatalyst in alkene metathesis. The synthesis of four new Ru carbene complexes is reported, featuring either the 1,3-bis(2,4,6-trimethylphenyl)dihydroimidazolylidene (H2IMes) or the 1,3-bis(2,6-diisopropylphenyl)dihydroimidazolylidene (SIPr) N-heterocyclic carbene ligand. The conformational isomers in the SIPr series were structurally characterized. Performance testing of all new precatalysts in three different ring-closing metatheses and an alkene cross metathesis illustrated superior performance by the precatalysts bearing axial coordinating ethers. Initiation rates with butyl vinyl ether were also measured, providing a useful comparison to existing Hoveyda-type metathesis precatalysts. Use of conformational control of the coordinating ether substituent provides a new way to modulate reactivity in this important class of alkene metathesis precatalysts.

Organic phosphine salt and optical physical property regulation and control method and application thereof (by machine translation)


Paragraph 0045-0055, (2020/05/30)

The invention discloses an organic phosphine salt and an optical physical property regulation and control method and application, of the compound, with different alkyl chain lengths through an ion exchange reaction; to obtain the organic phosphine salt, with different alkyl chain lengths through the ion exchange reaction to control the photophysical property (Cl, Br, I), of the compound by using alkyl, chain length and heavy atom, after, ultraviolet irradiation to achieve information, encryption application 300 nm. (by machine translation)

Isoxazoline derivative and application thereof in agriculture


Paragraph 0233; 0237-0238, (2020/11/25)

The invention provides an isoxazoline derivative and application of the isoxazoline derivative in agriculture. Specifically, the invention provides a compound as shown in a formula (I) or a stereoisomer, nitrogen oxide or salt of the compound as shown in the formula (I), and a preparation method thereof. In the formula (I), R1, R2, R3, R4, n, R5, R6, R7, R8 and Acy are as defined in the invention.Further, the invention provides compositions containing these compounds and use thereof in agriculture, particularly as herbicidal active ingredients for controlling unwanted plants.

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