US 2016/0257638 A1 · METHODS OF PRODUCING DICARBONYL COMPOUNDS

Abstract

Dicarboxylic acids, such as adipic acid, and diesters, such as adipates, may be produced by hydrogenating alkynes that may be produced from raw materials salvaged from waste stream processes. The carbons of the dicarboxylic acids are provided by alkynes generated from biomass waste and carbon dioxide recovered from waste streams such as exhaust gases.

Claims32

Dependent claims

A method for producing dicarbonyl compounds of formula I:

ROOC—(CH2)n—COOR (I),
wherein R is —H, aryl, alkyl or substituted alkyl, and n≧2, the method comprising:
hydrogenating a bis-carbonyl alkyne of formula II:
ROOC—(CnH(2n-4m))—COOR (II),
wherein m is a number of (—C≡C—) moieties and n/2 ≧m ≧1.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/032,045Filed 25 Oct 2013

Published

8 Sep 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C07C 51/36
By reactions not involving formation of carboxyl groups: by hydrogenation of carbon-to-carbon unsaturated bonds
C07C 1/30
Starting from organic compounds containing only halogen atoms as hetero-atoms: by splitting-off the elements of hydrogen halide from a single molecule
C07C 17/16
By replacement by halogens: of hydroxyl groups
C07C 21/22
Acyclic unsaturated compounds containing halogen atoms: containing carbon-to-carbon triple bonds

Abstract

Claims32

Dependent claims

A method for producing dicarbonyl compounds of formula I:

ROOC—(CH2)n—COOR (I),
wherein R is —H, aryl, alkyl or substituted alkyl, and n≧2, the method comprising:
hydrogenating a bis-carbonyl alkyne of formula II:
ROOC—(CnH(2n-4m))—COOR (II),
wherein m is a number of (—C≡C—) moieties and n/2 ≧m ≧1.

2 more elements

Dependencies are inferred from the claim text.

Methods of producing dicarbonyl compounds

Life of this patent

Abstract

Claims32

Methods of producing dicarbonyl compounds

Life of this patent

Abstract

Claims32