Process for preparing cyclohexanediacetic acid monoamide
申请人:Serichim S.R.L.
公开号:US07381823B2
公开(公告)日:2008-06-03
A new process is described for synthesising cyclohexanediacetic acid monoamide, a key compound in the synthesis of grabapentin precursors. The process of the invention is characterised by reacting cyclohexanone with cynoacetamide and immediately after, with a suitable malonic acid ester. A new intermediate (5-cyano-2,4-dioxo-3-azaspiro[5,5]undecane-1-carboxylic acid ester) is obtained which is convertible, under mild reaction conditions, into cyclohexanediacetic acid monoamide.
[EN] PROCESS FOR PREPARING CYCLOHEXANEDIACETIC ACID MONOAMIDE<br/>[FR] PROCEDE POUR LA PREPARATION DE MONOAMIDE DE L'ACIDE CYCLOHEXANEDIACETIQUE
申请人:CAFFARO S R L
公开号:WO2005090310A2
公开(公告)日:2005-09-29
A new process is described for synthesising cyclohexanediacetic acid monoamide, a key compound in the synthesis of grabapentin precursors. The process of the invention is characterised by reacting cyclohexanone with cynoacetamide and immediately after, with a suitable malonic acid ester. A new intermediate (5-cyano-2,4-dioxo-3-azaspiro[5,5]undecane-1-carboxylic acid ester) is obtained which is convertible, under mild reaction conditions, into cyclohexanediacetic acid monoamide.
PROCESS FOR PREPARING CYCLOHEXANEDIACETIC ACID MONOAMIDE
申请人:Danieli Bruno
公开号:US20070208175A1
公开(公告)日:2007-09-06
A new process is described for synthesising cyclohexanediacetic acid monoamide, a key compound in the synthesis of grabapentin precursors. The process of the invention is characterised by reacting cyclohexanone with cynoacetamide and immediately after, with a suitable malonic acid ester. A new intermediate (5-cyano-2,4-dioxo-3-azaspiro[5,5]undecane-1-carboxylic acid ester) is obtained which is convertible, under mild reaction conditions, into cyclohexanediacetic acid monoamide.