(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE

Name: (3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE
Brand: Zhengzhou Whchem

CAS：42134-49-6 | (3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE | Whchem

CAS: 42134-49-6

Other Names

triphenyl(3-(trimethylsilyl)prop-2-yn-1-yl)phosphonium bromide;TRIPHENYL-[3-(TRIMETHYLSILYL)-2-PROPYNYL]PHOSPHONIUM BROMIDE;(TRIMETHYLSILYLPROPARGYL)TRIPHENYLPHOSPHONIUM BROMIDE;(3-TRIMETHYLSILYL-2-PROPYNL)TRIPHENYLPHOSPHONIUM BROMIDE;(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE;(3-TRIMETHYLSILYL-2-PROPYNYL)*TRIPHENYLP HOSPHONIUM;(TRIMETHYLSILYLPROPARGYL)TRIPHENYLPHOSPHO-NIUM BROMIDE 99%;(Trimethylsilylpropargyl)triphenylphosphoniumbromide,99%

Structure - (3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE

Molecular Formula

Purity

>98%

Molecular Weight

453.43 g/mol

EINECS

Structure Available Verified Product

English Name	(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE
English Synonyms	triphenyl(3-(trimethylsilyl)prop-2-yn-1-yl)phosphonium bromide;TRIPHENYL-[3-(TRIMETHYLSILYL)-2-PROPYNYL]PHOSPHONIUM BROMIDE;(TRIMETHYLSILYLPROPARGYL)TRIPHENYLPHOSPHONIUM BROMIDE;(3-TRIMETHYLSILYL-2-PROPYNL)TRIPHENYLPHOSPHONIUM BROMIDE;(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE;(3-TRIMETHYLSILYL-2-PROPYNYL)*TRIPHENYLP HOSPHONIUM;(TRIMETHYLSILYLPROPARGYL)TRIPHENYLPHOSPHO-NIUM BROMIDE 99%;(Trimethylsilylpropargyl)triphenylphosphoniumbromide,99%
CAS Number	42134-49-6
Molecular Formula	C24H26BrPSi
Molecular Weight	453.43 g/mol
EINECS Number
Related Categories	Acetylenes;Ethynylsilanes;Functionalized Acetylenes;Phosphonium Compounds;Si (Classes of Silicon Compounds);Si-(C)4 Compounds;Silicon Compounds (for Synthesis);Synthetic Organic Chemistry;Wittig & Horner-Emmons Reaction;Wittig Reaction;C-C Bond Formation;Olefination;Wittig Reagents
Mol File	Download MOL File
Structure Image

Property	Value
Melting point	166-167 °C (dec.) (lit.)
Storage condition	2-8°C
Form	Solid
Color	White to pale yellow to light orange
Hydrolysis Sensitivity	6: forms irreversible hydrate

(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE (CAS 42134-49-6) is an organophosphorus compound and phosphine-based material used in cross-coupling catalysis, ligand synthesis, flame retardants and electronic chemicals.

Zhengzhou Whchem supplies (3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE with >98% purity, supporting both laboratory research and industrial production.

Category	Description (English Translation)
Uses & Synthesis Methods (3-Trimethylsilyl-2-propynyl)triphenylphosphonium Bromide	Uses & Synthesis Methods Uses: (3-Trimethylsilyl-2-propynyl)triphenylphosphonium bromide is a phosphonium salt containing both a phosphonium group and a silyl-protected alkyne. It is commonly used as a Wittig reagent precursor in organic synthesis for the construction of carbon-carbon double bonds, particularly for the introduction of alkynyl or silyl-substituted alkenyl groups. The trimethylsilyl group can be selectively deprotected to generate terminal alkynes, which can undergo further functionalization. It also serves as an intermediate in the synthesis of various bioactive molecules, pharmaceutical compounds, and functional materials. Synthesis Methods: The compound can be synthesized by reacting triphenylphosphine with 3-bromo-1-(trimethylsilyl)propyne. Typically, triphenylphosphine and 3-bromo-1-(trimethylsilyl)propyne are dissolved in an inert solvent such as acetonitrile or toluene and heated under reflux for several hours. The resulting phosphonium salt precipitates out of the solution and can be collected by filtration, washed with an appropriate solvent, and dried under reduced pressure to afford the desired product as a white to pale yellow solid. The compound should be stored at 2-8°C and is moisture-sensitive, forming an irreversible hydrate upon exposure to water.

Category

Description (English Translation)

Uses & Synthesis Methods

(3-Trimethylsilyl-2-propynyl)triphenylphosphonium Bromide

Uses & Synthesis Methods

Uses: (3-Trimethylsilyl-2-propynyl)triphenylphosphonium bromide is a phosphonium salt containing both a phosphonium group and a silyl-protected alkyne. It is commonly used as a Wittig reagent precursor in organic synthesis for the construction of carbon-carbon double bonds, particularly for the introduction of alkynyl or silyl-substituted alkenyl groups. The trimethylsilyl group can be selectively deprotected to generate terminal alkynes, which can undergo further functionalization. It also serves as an intermediate in the synthesis of various bioactive molecules, pharmaceutical compounds, and functional materials.

Synthesis Methods: The compound can be synthesized by reacting triphenylphosphine with 3-bromo-1-(trimethylsilyl)propyne. Typically, triphenylphosphine and 3-bromo-1-(trimethylsilyl)propyne are dissolved in an inert solvent such as acetonitrile or toluene and heated under reflux for several hours. The resulting phosphonium salt precipitates out of the solution and can be collected by filtration, washed with an appropriate solvent, and dried under reduced pressure to afford the desired product as a white to pale yellow solid. The compound should be stored at 2-8°C and is moisture-sensitive, forming an irreversible hydrate upon exposure to water.

Category	Value
Hazard Symbol	Xi
Hazard Codes (R Phrases)	36/37/38
Safety Codes (S Phrases)	26-36
WGK Germany	3
F (Hazard Index)	3-10
TSCA	No
HS Code (Customs)	2931.90.6000

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(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE

CAS：42134-49-6 | (3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE | Whchem

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(3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE

CAS：42134-49-6 | (3-TRIMETHYLSILYL-2-PROPYNYL)TRIPHENYLPHOSPHONIUM BROMIDE | Whchem

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