The Lactol Route to Fesoterodine: An Amine-Promoted Friedel–Crafts Alkylation on Commercial Scale
摘要:
We report the discovery and optimization of an amine-promoted Friedel-Crafts alkylation of cinnamaldehyde with 4-hydroxymethyl phenol. This reaction has been used successfully on commercial scale (200 kg) in the context of the manufacture of fesoterodine, a muscarinic antagonist used for the treatment of overactive bladder. Reductive aminations of diisopropylamine and lactol 4 are also discussed, as well as the resolution of the racemic amine rac-2 into its enantiomerically pure form.
The Lactol Route to Fesoterodine: An Amine-Promoted Friedel–Crafts Alkylation on Commercial Scale
作者:Olivier Dirat、Andrew J. Bibb、Colin M. Burns、Graham D. Checksfield、Barry R. Dillon、Stuart E. Field、Steven J. Fussell、Stuart P. Green、Clive Mason、Jinu Mathew、Suju Mathew、Ian B. Moses、Petar I. Nikiforov、Alan J. Pettman、Flavien Susanne
DOI:10.1021/op200107g
日期:2011.9.16
We report the discovery and optimization of an amine-promoted Friedel-Crafts alkylation of cinnamaldehyde with 4-hydroxymethyl phenol. This reaction has been used successfully on commercial scale (200 kg) in the context of the manufacture of fesoterodine, a muscarinic antagonist used for the treatment of overactive bladder. Reductive aminations of diisopropylamine and lactol 4 are also discussed, as well as the resolution of the racemic amine rac-2 into its enantiomerically pure form.