Process for the hydrogenation of a lactone or of a...

Details Process for the hydrogenation of a lactone or of a... Process for the hydrogenation of a lactone or of a...

2011-08-23

2011-08-23

Sullivan, Daniel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

08003818

ABSTRACT:
The invention provides a process for the hydrogenation of a reactant selected from the group consisting of: at the ring-closing carbon atom and has a proton at a(a) a 5- or 6-membered lactone that is substituted carbon atom adjacent to the ring-closing carbon atom;(b) an ester of a carboxylic acid having a gamma-carbonyl group and a proton at a carbon atom adjacent to the carbon atom of the carbonyl group; and(c) a carboxylic acid having a gamma-carbonyl group and a proton at a carbon atom adjacent to the carbon atom of the carbonyl group,wherein the reactant is contacted with a strongly acidic heterogeneous catalyst comprising a hydrogenating metal, in the presence of hydrogen, at a temperature in the range of from 100 to 350° C. and a pressure in the range of from 1 to 150 bar (absolute).The invention further provides a fuel composition, preferably a diesel composition, comprising di-alkyl 4-methylnonanedioate or di-alkyl 3-ethyl-4-methylheptanedioate.

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