906719

Pyrylium tetrafluoroborate

≥95%

• Synonyme(s) : Pyry-BF₄
• Formule empirique (notation de Hill) : C₅H₅BF₄O
• Numéro CAS: 80279-50-1
• Poids moléculaire : 167.90
• Numéro MDL: MFCD32857267
• Code UNSPSC : 12352107
• Nomenclature NACRES : NA.22

Propriétés

• Essai: ≥95%
• Forme: powder
• Température de stockage: 2-8°C
• Chaîne SMILES: [B-](F)(F)(F)F.[o+]1ccccc1
• InChI: 1S/C5H5O.BF4/c1-2-4-6-5-3-1;2-1(3,4)5/h1-5H;/q+1;-1
• Clé InChI: SJNICXIZTGPXAU-UHFFFAOYSA-N

Description

Application

Pyrylium tetrafluoroborate is used for the functionalization of heterocyclic amines, activating them for nucleophilic substitution. As demonstrated by the Cornella lab, the intermediate pyridinium salts can react with a vast array of nucelophiles to form new C-N, C-O, and C-S bonds, making pyrylium tetrafluoroborate a valuable reagent for late-stage functionalization.

Autres remarques

Selective Functionalization of Aminoheterocycles by a Pyrylium Salt

Selective Late-Stage Sulfonyl Chloride Formation from Sulfonamides Enabled by PyryBF₄

Synthesis of Sulfonyl Fluorides from Sulfonamides

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable