An efficient method for the lipase-catalysed resolution and in-line purification of racemic flurbiprofen in a continuous-flow reactor

• Lucia Tamborini¹
• Diego Romano²
• Andrea Pinto¹
• Arianna Bertolani^1,2
• Francesco Molinari²
• Paola Conti¹

• ¹Dipartimento di Scienze Farmaceutiche ‘Pietro Pratesi’, Universitá degli Studi di Milano, Italy
• ²Dipartimento di Scienze e Tecnologie Alimentari e Microbiologiche, Universitá degli Studi di Milano, Italy

The lipase-catalysed kinetic resolution of flurbiprofen was performed in a flow-chemistry reactor allowing for a significant reduction of the reaction time compared to the classical batch method. The process was implemented by adding an in-line purification step of the exiting solution, consisting in a catch and release protocol, which allows easy separation and recovery of both (S)-flurbiprofen and (R)-flurbiprofen butyl ester with an enantiomeric excess ≥90% and a chemical purity >98%.

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