[1,1'-Bis(diphenylphosphino)ferrocene]dichloropalladium(II)
[CAS# 72287-26-4]

Identification

• Classification: Organic raw materials >> Organic phosphine compound
• Name: [1,1'-Bis(diphenylphosphino)ferrocene]dichloropalladium(II)
• Synonyms: Iron(2+) 2-(diphenylphosphino)-2,4-cyclopentadienide - dichloropalladium (1:2:1)
• Molecular Formula: C₃₄H₂₈Cl₂FeP₂Pd
• Molecular Weight: 731.71
• CAS Registry Number: 72287-26-4
• EC Number: 615-748-9
• SMILES: [Fe].Cl[Pd]Cl.[CH]1[CH][CH][C]([CH]1)P(c2ccccc2)c3ccccc3.[CH]4[CH][CH][C]([CH]4)P(c5ccccc5)c6ccccc6

Properties

• Melting point: 275-280 °C

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H315-H319-H335
• Safety Statements: P261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P362-P403+P233-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Skin irritation	Skin Irrit.	2	H315
Acute toxicity	Acute Tox.	4	H312
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413
Acute toxicity	Acute Tox.	4	H332
Acute toxicity	Acute Tox.	4	H302

Discovery and Applications

[1,1'-Bis(diphenylphosphino)ferrocene]dichloropalladium(II), often abbreviated as Pd(dppf)Cl₂, is a coordination compound that emerged from research into organometallic complexes in the 1970s. It combines palladium with the bidentate ligand 1,1'-bis(diphenylphosphino)ferrocene (dppf) to form a stable and efficient catalyst. This discovery stemmed from the need for powerful catalysts for cross-coupling reactions, especially those involving palladium, which is rapidly gaining importance in synthetic organic chemistry.

The main application of Pd(dppf)Cl₂ is as a catalyst for a variety of cross-coupling reactions. It is particularly effective in Suzuki-Miyaura, Heck, and Negishi coupling reactions. These reactions are essential for forming carbon-carbon bonds, which are used to synthesize complex organic molecules, drugs, and materials. The dppf ligand enhances the stability and reactivity of the catalyst, allowing it to promote the reaction under milder conditions with high efficiency and selectivity.

In the pharmaceutical industry, Pd(dppf)Cl₂ is widely used in the synthesis of active pharmaceutical ingredients (APIs). Its ability to efficiently couple aryl halides with different nucleophiles makes it invaluable in building complex molecular frameworks, facilitating new drug development. The robustness of the compound makes it scalable in the drug manufacturing process, helping to improve production efficiency and cost-effectiveness.

In addition to pharmaceuticals, Pd(dppf)Cl₂ can be used in the synthesis of fine chemicals. Its role in forming complex aromatic compounds and heterocycles makes it a versatile tool for the production of dyes, agrochemicals, and fragrances. Its precision in forming specific bonds is essential for creating compounds with desired properties and functionalities.

In polymer chemistry, Pd(dppf)Cl₂ is used to synthesize conjugated polymers and other advanced materials. Its efficiency in cross-coupling reactions allows the creation of polymers with precise electronic and optical properties, which is essential for the development of organic electronic materials such as organic light-emitting diodes (OLEDs) and organic photovoltaics.

In academic and industrial research, Pd(dppf)Cl₂ serves as a model complex for studying palladium-catalyzed reactions. Its well-defined structure and reactivity provide insights into the mechanisms of cross-coupling reactions, helping chemists design new catalysts and optimize existing catalysts for a variety of applications.

References

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