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1-[3-(cyclopentyloxy)-4-methoxyphenyl]-4-oxocyclohexane-1-carbonitrile
1-[3-(cyclopentyloxy)-4-méthoxyphényl]-4-oxocyclohexane-1-carbonitrile
Son Güncelleme: 2014-11-21
Kullanım Sıklığı: 5
Kalite:
5-chloro-3-spiro-(4-oxocyclohexane)indolin-2-one.
5-chloro-3-spiro-(4-oxocyclohexane)indoiin-2-one.
Son Güncelleme: 2014-12-03
Kullanım Sıklığı: 1
Kalite:
method for racemization of non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids and their esters with c1-c6 alcohols
procede de racemisation d'acides 3-oxocyclopentancarboxyliques ou hexancarboxyliques non racemiques ou de leurs esters avec des alcools c1-c¿6?
Son Güncelleme: 2014-11-25
Kullanım Sıklığı: 3
Kalite:
a process according to claim 1, characterised in that racemic 3-oxocyclopentane- or 3-oxocyclohexane carboxylic acid methyl ester is used as starting material.
procédé selon la revendication 1, caractérisé en ce que l'on utilise comme produit de départ le 3-oxocyclopentanecarboxylate de méthyle racémique ou le 3-oxocyclohexanecarboxylate de méthyle racémique.
Son Güncelleme: 2014-12-04
Kullanım Sıklığı: 2
Kalite:
disclosed is a novel method for producing 1-(3-cyclopentenyloxy- 4- alkoxyphenyl)-4- oxocyclohexanecarbonitrile of general formula (i). a 4-cyano-4- (3-cyclopentenyloxy- 4-methoxyphenyl)- heptanediaciddialkyl ester of general formula (ii) is cyclized in the presence of a base to form a 5-cyano-5- (3-cyclopentyloxy-4- alkoxyphenyl)-2- oxocyclohexane carbonic acid ester of general formula (iii), then the compound of general formula (iii) is neutralized with an alkali metal hydrogen carbonate and finally decarboxylated in the presence of an alkali metal carbonate to form an end product according to formula (i).
l'invention concerne un nouveau procédé de production de 1-(3-cyclopentyloxy- 4-alcoxyphényl)- 4-oxocyclohéxanecarbonitrile de formule générale (i). a cet effet, un dialkylester de diacide de 4-cyano-4- (3-cyclopentyloxy- 4-méthoxyphényl)- heptane de formule générale (ii) est cyclisé en présence d'une base pour former un alkylester d'acide carboxylique de 5-cyano-5- (3-cyclopentyloxy-4- alcoxyphényl)-2- oxocyclohéxane de formule générale (iii), puis le composé de formule générale (iii) est neutralisé avec un carbonate d'hydrogène de métal alcalin avant d'être décarboxylé en présence d'un carbonate de métal alcalin pour former le produit final correspondant à la formule (i).
Son Güncelleme: 2011-07-27
Kullanım Sıklığı: 1
Kalite: