Flow Alkylation of Thiols, Phenols, and Amines Using a Heterogenous Base in a Packed-Bed Reactor
Alastair Baker1, Michael Graz2, Robert Saunders2, Gareth J. S. Evans2, Ilaria Pitotti1 Thomas Wirth1
- 1 School of Chemistry, Cardiff University, Park Place, Main Building, Cardiff CF10 3AT, UK
- 2 Neem Biotech, Willowbrook Technical Units, Llandogo Road, St. Mellons, Cardiff CF3 0EF, UKRead the publication that featured this abstract
Rapid alkylations of thiols are performed in a packed-bed flow reactor where potassium carbonate acts as a heterogeneous base in anhydrous solvents at ambient temperature. The reaction also has a high efficiency as the removal of the solvent is the only work up required to isolate the product. The products can be used in a subsequent oxidation which was performed sequentially in semibatch mode. The alkylations of phenol and benzyl amine have been demonstrated on an array of bases, but higher temperatures and longer reaction times are required than with thiols.
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