Location History:
- Birsfelden, CH (1977)
- Kaiseraugst, CH (1981)
Company Filing History:
Years Active: 1977-1981
Title: Innovations of Peter Labuhn
Introduction
Peter Labuhn is a notable inventor based in Birsfelden, Switzerland. He has made significant contributions to the field of chemistry, particularly in the development of processes for the preparation of valuable chemical compounds. With a total of 2 patents, Labuhn's work has implications in various industries, including agriculture and pharmaceuticals.
Latest Patents
Labuhn's latest patents include a process for the preparation of N-(1'-alkoxycarbonylethyl)-2,6-dialkylanilines. This innovative process involves the reaction of a corresponding 2,6-dialkylaniline with alkyl 2-chloropropionate or alkyl 2-bromopropionate. The reaction is conducted at temperatures between 110°C and 130°C, utilizing an alkali metal iodide as a catalyst and an alkali metal carbonate or bicarbonate as an acid acceptor. The resulting N-(1'-alkoxycarbonylethyl)-2,6-dialkylanilines serve as valuable intermediates for compounds with pesticidal action.
Another significant patent is for the preparation of 3,4-dialkoxyanilines, where the two alkyl groups differ from each other. This process involves the stepwise introduction of alkyl groups, starting with the conversion of pyrocatechol into its monoalkyl ether. The subsequent steps include coupling with a phenyldiazonium salt and reductively cleaving the resulting compound to obtain 3,4-dialkoxyaniline. The 3,4-dialkoxyanilines produced are valuable intermediates for creating 4-hydroxy-6,7-dialkoxy-3-quinoline carboxylic acid esters, which are effective coccidiostats.
Career Highlights
Peter Labuhn is associated with Ciba-Geigy Corporation, a company known for its innovative contributions to the chemical and pharmaceutical industries. His work at Ciba-Geigy has allowed him to focus on developing processes that enhance the efficiency and effectiveness of chemical production.
Collaborations
Labuhn has collaborated with notable coworkers such as Jean-Jacques Gallay and Ernst Aufderhaar. Their combined expertise has contributed to the advancement of chemical processes and innovations within their field.
Conclusion
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