Journal
ORGANIC CHEMISTRY FRONTIERS
Volume 9, Issue 15, Pages 4128-4134Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qo00941b
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- Nanyang Technological University
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A new synthetic approach to pi-extended imidazolium salts has been developed, which involves the 1,3-dipolar cycloaddition of polycyclic aromatic azomethine ylides with imidoyl chlorides. The addition of cesium fluoride as an additive is crucial for the successful conversion. Experimental and theoretical studies show that this cycloaddition proceeds via a stepwise mechanism. This method provides an efficient way to synthesize various imidazolium-containing polycyclic aromatic compounds.
A new synthetic approach to pi-extended imidazolium salts is developed based on 1,3-dipolar cycloaddition of polycyclic aromatic azomethine ylides with imidoyl chlorides, where the key to the successful conversion is the addition of cesium fluoride as an additive. Experimental and theoretical studies revealed that this cycloaddition proceeds via a stepwise mechanism rather than a concerted mechanism. This present method provides an efficient method to synthesize a variety of imidazolium-containing polycyclic aromatic compounds.
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