Synthesis and applications of 2-oxo-4-methylthiobutyric...

Details Synthesis and applications of 2-oxo-4-methylthiobutyric... Synthesis and applications of 2-oxo-4-methylthiobutyric...

2005-12-29

2010-02-16

Sullivan, Daniel M (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

C562S538000

Reexamination Certificate

active

07662997

ABSTRACT:
The invention relates to a process for preparing 2-oxo-4-methylthiobutyric acid (I), its salts and its derivativesin which R represents a group chosen from COOH, COOR′, NH2, NHR′ or NR′R″, where R′ and R″ are chosen, independently of one another, from the group of linear or branched alkyl radicals having from 1 to 12 carbon atoms and cycloalkyl radicals having from 3 to 12 carbon atoms,according to which process but-3-ene-1,2-diol (II) is catalytically and selectively oxidized to give 2-oxobut-3-enoic acid (III) and methyl mercaptan is selectively condensed with 2-oxobut-3-enoic acid (III).2-Oxo-4-methylthiobutyric acid (I), its salts and its derivatives are used as food supplement, in particular in animal nutrition.

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