Bernhard Urwyler

Title: Bernhard Urwyler: Innovator in Agricultural Chemistry

Introduction

Bernhard Urwyler is a notable inventor based in Schweizerhalle, Switzerland. He has made significant contributions to the field of agricultural chemistry, particularly in the development of herbicides. With a total of 2 patents, Urwyler's work has had a substantial impact on crop protection.

Latest Patents

Urwyler's latest patents include a process for the preparation of 4,6-dimethoxy-2-(methylsulfonyl)-1,3-pyrimidine. This innovative method involves reacting 4,6-dichloro-2-(methyltio)-1,3-pyrimidine in an inert organic solvent with an alkali metal methoxide. The process continues with the transfer of the resulting compound into an aqueous-acidic medium, followed by oxidation in the presence of a catalyst. The final step includes a purification process that adjusts the pH of the reaction mixture, making it suitable for the preparation of herbicides, such as 7-[ (4,6-dimethoxy-pyrimidin-2-yl)thio]-3-methylphthalide.

Career Highlights

Urwyler is currently employed at Syngenta Crop Protection, Inc., where he continues to advance his research in crop protection technologies. His work is characterized by a commitment to innovation and practical applications in agriculture.

Collaborations

One of his notable collaborators is Thomas Rapold, with whom he has worked closely on various projects related to agricultural chemistry.

Conclusion

Bernhard Urwyler's contributions to the field of agricultural chemistry through his patents and work at Syngenta Crop Protection, Inc. highlight his role as an influential inventor. His innovative processes are paving the way for advancements in herbicide development.