[EN] AN IMPROVED PROCESS FOR MINIMISING THE FORMATION OF DEHALOGENATED BYPRODUCTS<br/>[FR] PROCÉDÉ AMÉLIORÉ PERMETTANT DE RÉDUIRE AU MINIMUM LA FORMATION DE SOUS-PRODUITS DÉSHALOGÉNÉS
申请人:PIRAMAL ENTPR LTD
公开号:WO2015071831A1
公开(公告)日:2015-05-21
The present invention provides an improved process for preparation of organic compounds represented by Formula-Z; wherein effectively minimising the formation of dehalogenated by-products is achieved. In the process, the reduction is carried out using suitable reducing agent; more preferably Lithium Aluminium Hydride (LAH) in a solvent system, wherein at least one of the solvent is selected from halogenated solvents, which acts as co-solvent. The process of the present invention is useful for minimising of the formation of dehalogenated by-products during synthesis of various active pharmaceutical ingredients such as Paroxetine Hydrochloride, Cinacalcet, Eletriptan and Asenapine.
[EN] A NOVEL PROCESS FOR THE PREPARATION OF 5-SUBSTITUTED INDOLE DERIVATIVES<br/>[FR] NOUVEAU PROCÉDÉ POUR LA PRÉPARATION DE DÉRIVÉS D'INDOLE 5-SUBSTITUÉS
申请人:BIOPHORE INDIA PHARMACEUTICALS
公开号:WO2010049952A2
公开(公告)日:2010-05-06
The present invention relates to a novel process for the preparation of (R)-3-((1-methylpyrrolidin-2-yl)methyl)-5-(2-(phenylsulfonyl)ethyl)-1H-indole and its intermediates thereof. The present invention provides significant advantages over the existing processes.
NOVEL PROCESS FOR THE PREPARATION OF ELETRIPTAN
申请人:Pullagurla Manik Reddy
公开号:US20110207943A1
公开(公告)日:2011-08-25
The present invention relates to a novel process for the preparation of (R)-3-((1-methylpyrrolidin-2-yl)methyl)-5-(2-(phenylsulfonyl)ethyl)-1H-indole and its intermediates thereof.