Inventors:
Sonja Mackey - Galesburg MI, US
Michael Matison - Kalamazoo MI, US
Haifeng Wu - Portage MI, US
Paul Herrinton - Portage MI, US
Michael Goble - San Diego CA, US
Moses McMillian - Portage MI, US
Vikram Kalthod - Mattawan MI, US
International Classification:
C07C311/35
Abstract:
A process for preparing (S)-(-)-N-[4-[4-[ethyl(6-fluoro-6-methylheptyl)amino]-1-hydroxy]phenyl]methanesulfonamide hemifumarate salt, which comprises reacting N-[4[(2S)-tetrahydro-5-hydroxy-2-furanyl]phenyl]methanesulfonamide (IIa) with fluoroamine (III) in the presence of triacetoxyborohydride and ethyl acetate to provide [4-[4-[ethyl(6-fluoro-6-metylheptyl)amino]-1-hydroxy]phenyl]methanesulfonamide (I) anll then converting I into the hemifumarate salt Ia. A process for preparing IIa is also claimed as well as intermediates IIa-lId.