C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 223/10 (2006.01) C07C 227/08 (2006.01) C07C 229/08 (2006.01) C07C 231/14 (2006.01) C07C 237/06 (2006.01) C07D 201/08 (2006.01)
Patent
CA 2170706
Process for the preparation of .epsilon.-caprolactam and .epsilon.-caprolactam precursors, starting from the corresponding 5-formylvalerate ester, ammonia and hydrogen in the presence of a hydrogenation catalyst, wherein in a first step 5-formylvalerate ester is reacted with ammonia under non-hydrogenating conditions, and in a second step the reaction product obtained in the first step is converted to .epsilon.-caprolactam and the .epsilon.-caprolactam precursor(s) under hydrogenating conditions in the presence of ammonia.
Buijs Wim
Haasen Nicolaas Franciscus
Herkes Frank Edward
Lane Samuel Livingston
Wolters Henricus Franciscus Wilhelmus
Dsm Ip Assets B.v.
E. I. Du Pont de Nemours And Company
Fetherstonhaugh & Co.
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