Chloro(tri-tert-butylphosphine)gold(I)
Chloro(tri-tert-butylphosphine)gold(I), CAS 69550-28-3, with the linear formula (C4H9)3PAuCl and a molecular weight of 434.74 g/mol, is a gold(I) complex. It is recognised for its utility as a catalyst in diverse organic synthesis applications. Notably, it effectively catalyses various carbon-carbon bond-forming reactions, including cyclopropanation, making it a valuable reagent in advanced chemical research and development.
- IUPAC
- (Tri-tert-butylphosphine)gold(I) chloride,(Tri-tert-butylphosphine)chlorogold,(tBu3P)AuCl
- Synonyms
- (Tri-tert-butylphosphine)gold(I) chloride(Tri-tert-butylphosphine)chlorogold(tBu3P)AuCl

C-C Bond Forming Reactions
This gold complex is a valuable catalyst for facilitating the formation of carbon-carbon bonds. Its application in these critical synthetic transformations is well-documented in organic chemistry literature.
Cyclopropanation Reactions
Chloro(tri-tert-butylphosphine)gold(I) is effectively employed as a catalyst in cyclopropanation reactions. This process is essential for synthesizing cyclic organic compounds with a three-membered ring structure.
Gold Catalysis Research
As a significant gold catalyst, it contributes to the ongoing 'Gold Rush' in 21st-century catalysis. Its unique properties enable novel synthetic pathways and efficiency improvements in chemical synthesis.
| Molecular weight | 434.74 |
|---|---|
| Linear formula | (C4H9)3PAuCl |
| Application | Gold Catalysts — 21st Century ′Gold Rush′• Useful catalyst in a variety of C-C bond forming reactions, including cyclopropanation.1 |
| Melting point | >300 °C |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25 |
| Safety statements (S) | 45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Chloro(tri-tert-butylphosphine)gold(I) used for?
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Chloro(tri-tert-butylphosphine)gold(I) is primarily used as a catalyst in organic synthesis, particularly for C-C bond forming reactions like cyclopropanation.
What are the CAS number and formula for Chloro(tri-tert-butylphosphine)gold(I)?
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The CAS number for Chloro(tri-tert-butylphosphine)gold(I) is 69550-28-3, and its linear formula is (C4H9)3PAuCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Chloro(tri-tert-butylphosphine)gold(I) for research and chemical synthesis purposes. Specific purity and grade details are available upon request, and it is not represented as USP, BP, or EP grade.
How should Chloro(tri-tert-butylphosphine)gold(I) be handled?
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This compound is toxic if swallowed (H301) and requires careful handling. Recommended personal protective equipment includes eyeshields, faceshields, gloves, and a P2 respirator. Always consult the Safety Data Sheet before use.
Is Chloro(tri-tert-butylphosphine)gold(I) shipped internationally?
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Yes, Tech Serve Solutions specialises in the global supply and export of fine chemicals, including Chloro(tri-tert-butylphosphine)gold(I).
How can I request a quote or sample for Chloro(tri-tert-butylphosphine)gold(I)?
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To request a quote or sample, please contact our sales team through the website or by phone, providing the product name and CAS number (69550-28-3).
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