[EN] PROCESS FOR THE PREPARATION OF CYCLOHEXANOL DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE CYCLOHÉXANOL
申请人:EGIS GYOGYSZERGYAR NYILVANOSAN
公开号:WO2009144517A1
公开(公告)日:2009-12-03
The present invention relates to a process for the preparation of cyclohexanol derivatives of the general formula (I), wherein R stands for a hydrogen atom or a methyl group, in a one-step process from a cyano compound of the general formula (II).
[EN] A PROCESS FOR PREPARATION OF PHENETHYLAMINE DERIVATIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉ DE PHÉNÉTHYLAMINE
申请人:HIKAL LTD
公开号:WO2010100520A1
公开(公告)日:2010-09-10
The present invention relates to a process for the preparation of 1-[2-amino-1-(4-substituted phenyl)ethyl]cyclohexanol (3) (where R is OMe, OH), said process comprising the steps of; subjecting a reaction mixture of substituted phenylacetonitrile (2) in alcohol, an organic acid, and a hydrogenating catalyst in the presence of hydrogen gas pressure in the range of 0.5 kg/cm2 to 30 kg/cm2 and temperature in the range of 0-100°C; filtering and concentrating the cooled reaction mixture to obtain an acid addition salt of 1-[2-amino-1-(4-substituted phenyl)ethyl]cyclohexanol (4); and treating the acid addition salt of 1-[2-amino-1-(4-substituted phenyl)ethyl]cyclohexanol (4) with an ester in presence of a base to obtain 1-[2-amino-1-(4-substituted phenyl) ethyl] cyclohexanol (3).
Process for the preparation of 1-[cyano(4-hydroxyphenyl)methyl]cyclohexanol compounds
申请人:Mitzel Frieder
公开号:US20070021627A1
公开(公告)日:2007-01-25
Process for the preparation of I-[cyano(phenyl)methyl]cyclohexanol compounds of general formula (I):
in which
R
1
is hydrogen, (C
1-4
)alkyl or (C
1-4
)alkoxy,
wherein a compound of general formula (II):
in which R
1
is as defined above, is reacted with cyclohexanone, the reaction being carried out in the presence of an organic or inorganic base, and this organic or inorganic base being present in the reaction mixture in at least an equimolar amount, based on the amount of the compound of general formula (II).
Process for preparation of o-desmethylvenlafaxine and its analogue
申请人:KRKA, D.D., Novo Mesto
公开号:EP1870395A1
公开(公告)日:2007-12-26
The present invention belongs to the field of organic chemistry and refers to a process for the preparation of O-desmethylvenlafaxine (1-[2-Dimethylamino)-1-(4-hydroxyphenyl)ethyl]cyclohexanol) and its analogues. The invention also relates to a catalytic hydrogenation of cyano-group of the substituted acetonitrile.