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Sustainable synthesis of enantiopure fluorolactam derivatives by a selective direct fluorination – amidase strategy†
Nicky J. Willis,Craig A. Fisher,Catherine M. Alder,Antal Harsanyi,Lena Shukla,Joseph P. Adams,Graham Sandford
Green Chemistry Pub Date : 10/13/2015 00:00:00 , DOI:10.1039/C5GC02209F
Abstract

Pharmaceutically important chiral fluorolactam derivatives bearing a fluorine atom at a stereogenic centre were synthesized by a route involving copper catalyzed selective direct fluorination using fluorine gas for the construction of the key C–F bond and a biochemical amidase process for the crucial asymmetric cyclisation stage. A comparison of process green metrics with reported palladium catalyzed enantioselective fluorination methodology shows the fluorination-amidase route to be very efficient and more suitable for scale-up.

Graphical abstract: Sustainable synthesis of enantiopure fluorolactam derivatives by a selective direct fluorination – amidase strategy
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