PROCESS FOR THE PREPARATION OF PIPERAZINE COMPOUNDS AND HYDROCHLORIDE SALTS THEREOF
申请人:Czibula Laszlo
公开号:US20110275804A1
公开(公告)日:2011-11-10
The invention relates to a new process for the preparation of compounds of general formula (I) wherein
R
1
and R
2
represent independently hydrogen or
C
1-6
alkyl with straight or branched chain optionally substituted with aryl group, or
C
2-7
alkenyl containing 1-3 double bonds, or
monocyclic, bicyclic or tricyclic aryl optionally substituted with one or more C1-6 alkoxy, trifluoro-C
1-6
alkoxy, C
1-6
-alkoxycarbonil, C
1-6
alkanoyl, aryl, C
1-6
alkylthio, halogen or cyano, or
optionally substituted monocyclic, bicyclic or tricyclic C
3-14
cycloalkyl group,
R
1
and R
2
together with the adjacent nitrogen form a saturated or unsaturated optionally substituted monocyclic or bicyclic heterocyclic ring which may contain further heteroatoms selected from oxygen, nitrogen, or sulphur atoms
and hydrochloric acid alts and/or hydrates and/or solvates thereof, by dissolving or suspending trans 4-2-[4-(2,3-dichlorophenyl)-piperazine-1-il]-ethyl}-cyclohexylamine of formula (III) or a salt or a hydrate or a solvate thereof in an inert solvent in the presence a base then adding a carbonic acid derivative of general formula (VI) wherein R is alkyl with C
1-6
straight or branched chain or C
1-2
fully halogenated alkyl, Z is —O—R or —X, wherein R is as described above, X is halogen, and reacting the compound of general formula (IV) obtained wherein R is as described above, in situ or, optionally in isolated state with an amine of general formula (V) wherein R
1
and R
2
are as described above to obtain the compound of general formula (I) and then optionally forming the hydrochloride salts and/or hydrates and/or solvates thereof.
该发明涉及一种制备通式(I)化合物的新工艺,其中R1和R2分别表示氢或C1-6烷基,可以是直链或支链,也可以用芳基取代,或者是含有1-3个双键的C2-7烯基,或者是单环、双环或三环芳基,可以用一个或多个C1-6烷氧基、三氟甲氧基、C1-6-烷氧羰基、C1-6烷酰基、芳基、C1-6烷基硫基、卤素或氰基取代,或者是可选择取代的单环、双环或三环C3-14环烷基,R1和R2连同相邻的氮形成饱和或不饱和、可选择取代的单环或双环杂环,可以含有进一步选择的氧、氮或硫原子的杂原子,以及其盐和/或水合物和/或溶剂化合物,通过在惰性溶剂中溶解或悬浮式地将通式(III)的反式4-2-[4-(2,3-二氯苯基)-哌嗪-1-基]-乙基}-环己胺或其盐或水合物或溶剂化合物,在碱存在下加入通式(VI)的碳酸衍生物,其中R是具有C1-6直链或支链的烷基或C1-2全氟化烷基,Z是-O-R或-X,其中R如上所述,X是卤素,然后与通式(V)的胺反应,其中R1和R2如上所述,以获得通式(I)的化合物,然后可选择形成其盐和/或水合物和/或溶剂化合物。