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US 7,030,249 B2Granted
Process for converting α-angelica lactone to 5-methyl-N-alkyl-2-pyrrolidone using alkyl amines
AssigneeE. I. uPont de Nemours and Company
InventorLeo Ernest Manzer
Life of this patent
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Abstract
This invention relates to a process for producing 5-methyl-N-alkyl-2-pyrrolidone by a) reacting α-angelica lactone with alkyl amines and b) hydrogenating the products of step (a) in the presence of a metal catalyst, which is optionally supported.
Claims15
A process comprising the steps of a) contacting α-angelica lactone with an alkyl amine, optionally in the presence of an inert solvent, and b) reacting the products of step (a) with hydrogen gas and a catalyst, the catalyst being optionally supported on a catalyst support;
- to produce 5-methyl-N-alkyl-2-pyrrolidone, wherein R is selected from the group consisting of CH3, C2H5, straight-chain or branched C3 to C30 alkyl, and straight-chain or branched C3 to C30 alkyl comprising a heteroatom selected from the group consisting of O and N.
Dependencies are inferred from the claim text.