Process for preparation of benzylpiperidine compounds

C - Chemistry – Metallurgy – 07 – D

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C07D 211/70 (2006.01) C07D 211/34 (2006.01) C07D 211/62 (2006.01) C07D 211/96 (2006.01) C07F 9/40 (2006.01)

Patent

CA 2434934

Benzylpiperidine compounds useful as raw material for the synthesis of drugs, agricultural chemicals, and so on can be easily prepared in fewer steps by a process involving the step of reacting a compound (I) with a compound (II) to thereby obtain a compound (III). (I) (II) (III) [In the formulae, R1 is hydrogen or an amino-protecting group; R2 is hydrogen, an optionally substituted hydrocarbon group, optionally substituted alkoxy, or an optionally substituted heterocyclic group; and R3 is lower alkyl.]

Composés de benzylpipéridine utiles en tant que matière première pour la synthèse de médicaments, produits phytosanitaires, etc., qui peuvent être préparés avec un nombre réduit d'étapes à l'aide d'un procédé qui consiste à faire réagir un composé de formule (I) avec un composé de formule (II) pour obtenir un composé de formule (III). Dans lesdites formules, R?1¿ représente hydrogène ou un groupe amino-protecteur, R?2¿ représente hydrogène, un groupe hydrocarbure éventuellement substitué, alcoxy éventuellement substitué, ou un groupe hétérocyclique éventuellement substitué, et R?3¿ représente alkyle inférieur.

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