Abstract
Here we have developed an effective metal-free dehydrogenative coupling method wherein α-oxyalkyl and alkyl radicals were generated from various ethers and alkanes to undergo coupling with a variety of electron-deficient heteroarenes such as un/substituted iso-quinolones, quinolines, pyridines, pyrazines and pyrimidines. The persulfate-acetone-water system was optimized for the dehydrogenative coupling with cyclic ethers which gave moderate to excellent yields of α-oxyalkyl containing heteroarenes. We have also optimized the conditions for coupling with cyclic alkanes and alicyclic ethers and demonstrated by conducting the reactions with a variety of electron-deficient heteroarenes. Further, the present method is also applicable to electron deficient arenes like naphthoquinones and moreover, it didn't require any external acid.
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