Process for producing 3-[4-(1,1-dimethyl-propyl)-phenyl]2-methyl-propionaldehyde and cis-4{3-[4-(1,1-dimethyl-propyl)-phenyl]2-methyl-propyl}-2,6-dimethyl-morpholine (amorolfine)
申请人:Galderma S.A.
公开号:EP1842848A1
公开(公告)日:2007-10-10
The present invention discloses a new process for the preparation of 3-[4-(1,1-dimethyl-propyl)-phenyl]-2-methyl-propionaldehyde and for the preparation of cis-4-3-[4-(1,1-dimethyl-propyl)-phenyl]-2-methyl-propyl}-2,6-dimethyl-morpholine (Amorolfine).
SYNTHESIS OF 3-[4-(1,1-DIMETHYL-PROPYL)-PHENYL]-2-METHYL-PROPIONALDEHYDE AND cis-4--2,6-DIMETHYL-MORPHOLINE (AMOROLFINE)
申请人:BOITEAU JEAN-GUY
公开号:US20090131660A1
公开(公告)日:2009-05-21
3-[4-(1,1-Dimethyl-propyl)-phenyl]-2-methyl-propionaldehyde and cis-4-3-[4-(1,1-dimethyl-propyl)-phenyl]-2-methyl-propyl}-2,6-dimethyl-morpholine (Amorolfine) are synthesized, first by Heck reacting a compound of general formula (VI):
with 2-methyl-prop-2-en-1-ol of formula (VII):
in the presence of a palladium catalyst and a base, in a solvent selected from among N,N-dimethylformamide, polar protic and non-polar organic solvents, and at a temperature ranging from 60° C. to 150° C., and then conducting an amino reduction by reacting the 3-[4-(1,1-dimethyl-propyl)-phenyl]-2-methyl-propionaldehyde of formula (II) with cis-2,6-dimethyl morpholine of formula (IV):
in the presence of a reducing agent and in a solvent.
PROCESS FOR PRODUCING 3-[4-(1,1-DIMETHYL-PROPYL)-PHENYL]-2-METHYL-PROPIONALDEHYDE AND CIS-4-{3-[4-(1,1-DIMETHYL-PROPYL)-PHENYL]-2-METHYL-PROPYL}-2,6-DIMETHYL-MORPHOLINE (AMOROLFINE)