Company Filing History:
Years Active: 1993-1996
Title: Elkana Gurfinkel: Innovator in Chemical Processes
Introduction
Elkana Gurfinkel is a notable inventor based in Omer, Illinois. He has made significant contributions to the field of chemistry, particularly in the development of processes related to the synthesis of important chemical compounds. With a total of three patents to his name, Gurfinkel's work has had a meaningful impact on the industry.
Latest Patents
Gurfinkel's latest patents include a process to prepare diazinon. This process involves converting the starting hydroxypyrimidine to its potassium salt by reacting it with potassium carbonate in an organic solvent after removing water through azeotropic distillation. The resulting non-aqueous salt is then reacted with diethyl thiophosphoryl chloride to recover the diazinon formed. The quantity of potassium carbonate used relative to the starting hydroxypyrimidine is less than molar, ideally in a ratio ranging from 0.55 to 0.75. Another significant patent is for the manufacture of 2-isopropyl-4-methyl-6-hydroxypyrimidine. In this process, hydroxypyrimidine, a key intermediate in the manufacture of diazinon, is prepared in high yields and purity by reacting an amidine with methyl-acetoacetate in a dry medium, using a methanolic base in an aliphatic hydrocarbon solvent while azeotropically distilling off the water formed during the reaction.
Career Highlights
Gurfinkel is currently employed at Makhteshim Chemical Works Ltd., where he continues to innovate and develop new chemical processes. His expertise in the field has allowed him to contribute to various projects that enhance the efficiency and effectiveness of chemical manufacturing.
Collaborations
Throughout his career, Gurfinkel has collaborated with notable colleagues, including Yaakov Shmueli and Yaacov Shmueli. These collaborations have fostered a productive environment for innovation and have led to advancements in their respective fields.
Conclusion
Elkana Gurfinkel is a distinguished inventor whose work in chemical processes has led to significant advancements in the industry. His patents reflect a commitment to innovation and excellence in the field of chemistry.