# US 4,399,302 A · 4-Methylmercapto-2-acetoxy-butyraldehyde

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- Number: US 4,399,302 A
- Document ID: US4399302A
- Status: Granted
- Kind: A
- Application number: 06/352,451
- Filed: 1982-02-25
- Granted: 1983-08-16
- Earliest claimed: 1981-02-25
- Assignees: Degussa AG
- Inventors: Kleemann, Axel; Rudolf Fahnenstich; Marc Samson
- Web page: https://patentgrep.com/patent/US4399302A

## CPC

- C07C 323/00: Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

The invention is directed to 4-methylmercapto-2-cacetoxy-butyraldehyde of the formula ##STR1## and a process for its production by hydroformylating 3-methylmercapto-1-acetoxy-propene-1 of the formula ##STR2## 4-methylmercapto-2-acetoxy-butyraldehyde can be used as an intermediate product for the production of 4-methylmercapto-2-hydroxy-butyric acid, the hydroxy analogue of methionine.

## Claims

### Claim 1

4-methylmercapto-2-acetoxy-butyraldehyde of the formula ##STR5##