C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 227/12 (2006.01) C07C 229/08 (2006.01)
Patent
CA 2423084
A process for making alkyl 6-aminocaproate by hydroformylating 3- pentenenitrile to produce 3-, 4-, and 5-formylvaleronitrile (FVN mixture), converting the FVN mixture to alkyl 3-, 4-, and 5-cyanovalerate by either oxidative esterification of the FVN mixture or oxidation of the FVN mixture followed by esterification; isolating alkyl 5-cyanovalerate; and hydrogenating the alkyl 5-cyanovalerate to produce alkyl 6-aminocaproate. The resulting alkyl 6-aminocaproate can be cyclized to produce caprolactam.
La présente invention concerne un processus de préparation de 6-aminocaproate alkyle par hydroformylation de 3-pentenenitrile afin de produire 3-, 4-, et 5-formylvaléronitrile (mélange FVN), par transformation du mélange FVN en 3-, 4-, et 5-cyanovalerate alkyle soit par l'estérification oxydative du mélange FVN, soit par l'oxydation du mélange FVN suivie de l'estérification, par l'isolation de 5-cyanovalerate alkyle et par l'hydrogénation de 5-cyanovalerate alkyle afin de produire 6-aminocaproate alkyle. 6-aminocaproate alkyle qui en résulte peut être cyclisé de façon à produire du caprolactame.
Bunel Emilio E.
Koch Theodore A.
Ozer Ronnie
Sengupta Sourav K.
Bennett Jones Llp
E. I. Du Pont de Nemours And Company
Invista Technologies S.a.r.l.
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