900685

2,4,6-Tri(p-tolyl)pyrylium tetrafluoroborate salt

≥95%

• Empirical Formula (Hill Notation): C₂₆H₂₃BF₄O
• CAS Number: 2713-21-5
• Molecular Weight: 438.26
• UNSPSC Code: 12161600
• NACRES: NA.22

Properties

• Quality Level: 100
• assay: ≥95%
• form: powder
• reaction suitability: reagent type: catalyst; reaction type: Photocatalysis
• mp: 298-303 °C

Description

Application

Excitable by blue LEDs, this photocatalyst was reported by the Nicewicz laboratory for catalysis of O-aryl carbamothioates to S-aryl carbamothioates at ambient temperatures, an improvement from the elevated reaction temperatures traditionally needed in the Newman-Kwart rearrangment or palladium catalysis. Effective for scale-up or flow chemistry, this triarylpyrylium salt provides convenient access to thiophenols from phenols.

It can also catalyze visible light-initiated, living cationic polymerization of 4-methoxystyrene with methanol under metal-free conditions.

Product can be used with our line of photoreactors: Including Penn PhD (Z744035) & SynLED 2.0 (Z744080)

Other Notes

Ambient-Temperature Newman-Kwart Rearrangement Mediated by Organic Photoredox Catalysis
Cycloaddition Reactions Initiated by Photochemically Excited Pyrylium Salts

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable