Microwave-assisted methylation of phenols with DMF-DMA
P Belov, VL Campanella, AW Smith, R Priefer
Index: Belov, Pavel; Campanella, Veronica L.; Smith, Alison W.; Priefer, Ronny Tetrahedron Letters, 2011 , vol. 52, # 21 p. 2776 - 2779
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Citation Number: 9
Abstract
Abstract We evaluated the potential of N, N-dimethylformamide dimethylacetal (DMF-DMA) as a methylating agent for a library of para-substituted phenols under microwave irradiation. The rate of reaction was dictated by the electronic nature of the para-substituent. With an electron-withdrawing group the reaction was completed within 30 min. For electron-donating groups, the reaction times were 60 min. Esterification and enamino-ketone formation was ...
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