Sustainable synthesis of enantiopure fluorolactam derivatives by a selective direct fluorination – amidase strategy
GREEN CHEMISTRY(2016)
摘要
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 enantio-selective fluorination methodology shows the fluorination-amidase route to be very efficient and more suitable for scale-up.
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