Convenient and General Zinc‐Catalyzed Borylation of Aryl Diazonium Salts and Aryltriazenes under Mild Conditions
نویسندگان
چکیده
A convenient and general zinc-catalyzed borylation of aryl diazonium salts and aryltriazenes has been developed. With bis- (pinacolato)diboron as the borylation reagent, aryldiazonium tetrafluoroborate salts and aryltriazenes were transformed into the corresponding arylboronates in moderate to excellent yields under mild conditions. As a convenient and practical methodology, no additional ligands, base, or any other additives are required here.
منابع مشابه
Polymer/HIO4 : An efficient catalyst for solvent-free synthesis of 2-naphthol azo dyes
A convenient, one-pot method for the synthesis of diazonium salt has been developed by the sequential diazotization of aromatic amines with NaNO2, polymer- supported periodic acid (PPIA) and 2-naphthole under solvent-free conditions at room temperature. By using this method, several types of aromatic amine, containing electron-withdrawing and electron-donating groups, were rapidly converted to ...
متن کاملPolymer/HIO4 : An efficient catalyst for solvent-free synthesis of 2-naphthol azo dyes
A convenient, one-pot method for the synthesis of diazonium salt has been developed by the sequential diazotization of aromatic amines with NaNO2, polymer- supported periodic acid (PPIA) and 2-naphthole under solvent-free conditions at room temperature. By using this method, several types of aromatic amine, containing electron-withdrawing and electron-donating groups, were rapidly converted to ...
متن کاملSilver-catalyzed Meerwein arylation: intermolecular and intramolecular fluoroarylation of styrenes.
The first example of silver-catalyzed intermolecular and intramolecular Meerwein fluoroarylation of styrenes with aryl diazonium salts has been developed. This reaction is operationally simple, scalable and proceeds under mild conditions. Furthermore, fluorinated dihydrobenzofurans and indolines were easily accessed using this method.
متن کاملPalladium-catalyzed Sonogashira reactions of aryl amines with alkynes via in situ formation of arenediazonium salts.
A general and convenient palladium-catalyzed Sonogashira reaction of in situ generated arenediazonium salts has been developed and various internal arylalkynes are produced in good yields under mild conditions.
متن کاملA transition-metal-free synthesis of arylcarboxyamides from aryl diazonium salts and isocyanides.
A transition-metal-free carboxyamidation process, using aryl diazonium tetrafluoroborates and isocyanides under mild conditions, has been developed. This novel conversion was initiated by a base and solvent induced aryl radical, followed by radical addition to isocyanide and single electron transfer (SET) oxidation, affording the corresponding arylcarboxyamide upon hydration of the nitrilium in...
متن کامل