Base‐catalyzed Effective C2‐Amidation of Azolium Salts Using Isocyanates under Mild Conditions

S Bauri, A Ramachandran, A Rit - Chemistry–An Asian Journal, 2023 - Wiley Online Library
Chemistry–An Asian Journal, 2023Wiley Online Library
An unprecedented base‐catalyzed hydroarylation of isocyanates with azolium salts was
developed, which follows a simple reaction pathway and provided facile access to diverse
C2‐amidated azolium salts under mild conditions. Importantly, this methodology can also be
applied for the successive C2‐amidation of a bisimidazolium salt with two different
isocyanates to provide the corresponding unsymmetrically substituted bisamide derivatives.
Notably, the obtained amidated salts can also serve as a prominent carbene surrogate for …
Abstract
An unprecedented base‐catalyzed hydroarylation of isocyanates with azolium salts was developed, which follows a simple reaction pathway and provided facile access to diverse C2‐amidated azolium salts under mild conditions. Importantly, this methodology can also be applied for the successive C2‐amidation of a bisimidazolium salt with two different isocyanates to provide the corresponding unsymmetrically substituted bisamide derivatives. Notably, the obtained amidated salts can also serve as a prominent carbene surrogate for the synthesis of metal‐NHC complexes.
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