New multicomponent cyclization: domino synthesis of pentasubstituted pyridines under solvent-free conditions |
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Authors: | Jiang Bo Wang Xiang Shi Feng Tu Shu-Jiang Li Guigen |
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Institution: | School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou 221116, Jiangsu, PR China. |
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Abstract: | An efficient methodology for the synthesis of highly functionalized pyridine derivatives starting from readily available common reactants has been developed under microwave irradiation and solvent-free conditions. The new domino reaction enables successful assembly of five new σ bonds including two C-N bonds in a one-pot operation. A new mechanism has been proposed, which involves a novel reaction and sequence consisting of deprotonation-imine formation-anionic carbonyl addition. |
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