Company Filing History:
Years Active: 1976-1977
Title: Wolf-Dieter Pfeifer: Innovator in Chemical Processes
Introduction
Wolf-Dieter Pfeifer is a notable inventor based in Grossauheim, Germany. He has made significant contributions to the field of chemistry, particularly in the development of innovative processes. With a total of three patents to his name, Pfeifer's work has had a meaningful impact on various chemical applications.
Latest Patents
Pfeifer's latest patents include a process for making penicillamine and a process for formylation. The process of making penicillamine involves reacting a 2-disubstituted-5,5-alkyl-thiazolidine nitrile with a mineral acid in a two-stage procedure. This method utilizes relatively low temperatures and high concentrations of mineral acid in the first stage, while the second stage employs lower acid concentrations and higher temperatures. The term 'relatively' refers to the relationship between the two stages of the reaction with mineral acid. The process for formylation focuses on organic basic nitrogen compounds, which are formylated in the presence of acetic anhydride. This is achieved by adding the nitrogen compound as a salt and conducting the formylation with an alkali or ammonium formate in an organic solvent that has limited miscibility with water.
Career Highlights
Pfeifer is currently associated with Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler, a company known for its expertise in precious metal refining. His work at this institution has allowed him to further his research and development in chemical processes.
Collaborations
Throughout his career, Pfeifer has collaborated with esteemed colleagues such as Paul Scherberich and Heribert Offermanns. These partnerships have contributed to the advancement of his innovative projects and patents.
Conclusion
Wolf-Dieter Pfeifer's contributions to the field of chemistry through his patents and collaborations highlight his role as a significant inventor. His innovative processes continue to influence the industry and showcase the importance of research and development in chemical applications.
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