Abstract:
An integrated process for producing cyclohexanone oxime, a caprolactam precursor, is provided wherein a secondary alcohol is utilized to generate the hydrogen peroxide oxidizing agent and as a reaction medium for ammoximation. The ketone produced as a co-product is recycled back to the secondary alcohol by hydrogenation.
Abstract:
.gamma.-lactones are converted into both known and new azetidine carboxylic acids which can be transformed readily to the corresponding .beta.-lactams by oxidative decarboxylation. The .beta.-lactams and substitution products thereof are useful intermediates in the synthesis of biologically active lactams such as nocardicin.
Abstract:
An improved process for preparing 2-pyrrolidinone at relatively low pressures which comprises reduction of succinimide in an aqueous system at temperatures of about 225* to 275* C., at a pressure in the range of about 1,200 to 1,500 p.s.i.g. and in the presence of a supported palladium catalyst.
Abstract:
A LIQUID PHASE OXIDATION REACTION WHEREBY A CYCLIC AMINE HAVING AN UNSUBSTITUTED METHYLENE MOIETY ADJACENT TO THE RING NITROGEN IS CONVERTED TO THE CORRESPONDING LACTAM BY REACTING THE AMINE WITH A HYDROPEROXIDE IN THE PRESENCE OF A METAL ION CATALYST.
Abstract:
IN THE CATALYTIC CLEAVAGE 1,1''-PEROXYDICYCLOHEXYLAMINE, TO GIVE CAPROLACTAM THE MAJORITY OF THE CYCLOALKANONE COPRODUCT IS CONTINUOUSLY REMOVED BY DISTILLATION FROM THE MIXTURE UNDERGOING CLEAVAGE.
Abstract:
An apparatus for the epoxidation of a cyclic unsaturated C12 compound with hydrogen peroxide is provided. The apparatus includes a reactor for carrying out the reaction, wherein the walls of the reactor are at least partially furnished with a separation-active layer of crosslinked silicone acrylates and/or polydimethylsiloxane.