Microwave fluorination: a novel, rapid approach to fluorination with Selectfluor |
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Authors: | Gavin W Bluck |
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Institution: | Syngenta, Jealott’s Hill International Research Station, Bracknell, Berks RG426EY, UK |
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Abstract: | Fluorination of electron rich aromatic systems with electrophilic fluorination reagents such as Selectfluor® and Accufluor® is a well-established process. Herein we report results from investigations into the use of such procedures to perform rapid, small-scale fluorinations under microwave irradiation. We have investigated the transformation with a range of different substrates and discuss the effects of two key factors, namely reaction time and choice of fluorination reagent. The use of Selectfluor® in acetonitrile at 150 °C with microwave heating for 10 min affords products in comparable yields to those obtained by prolonged heating in acetonitrile at its reflux temperature. |
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Keywords: | Electrophilic fluorination Fluorination reagents Selectfluor Accufluor Microwave heating |
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