Location History:
- Toyonaka, JP (1980 - 1982)
- Kawanishi, JP (1981 - 1982)
Company Filing History:
Years Active: 1980-1982
Title: Kohichi Aketa: Innovator in Agricultural Chemistry
Introduction
Kohichi Aketa is a notable inventor based in Toyonaka, Japan. He has made significant contributions to the field of agricultural chemistry, holding a total of 6 patents. His innovative methods have paved the way for advancements in the production of useful chemical intermediates.
Latest Patents
Among his latest patents is a method for preparing 4-hydroxy-3-methyl-2-(2-propynyl)-2-cyclopentenolone. This invention relates to a novel method for producing cyclopentenolone, which serves as a valuable intermediate for agricultural chemicals. The process involves reacting an acetonedicarboxylic ester with 2-propynyl chloride in the presence of magnesium alkoxide and alkali iodide. This reaction leads to the formation of a mono-(2-propynyl)-substituted acetonedicarboxylic ester, which is then hydrolyzed under alkaline conditions. The hydrolyzed product is subsequently reacted with methylglyoxal to obtain a novel γ-diketone, which is then ring-closed under alkaline conditions.
Another significant patent involves a process for preparing optically active α-cyano-3-phenoxybenzyl. This process focuses on isomerizing optically active α-cyano-3-phenoxybenzyl 2-(4-chlorophenyl)isovalerate at the asymmetric carbon atom of the 3-phenoxybenzyl moiety. It also details a method for obtaining (S)-α-cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)isovalerate from its racemic counterpart.
Career Highlights
Kohichi Aketa is currently associated with Sumitomo Chemical Company, Limited, where he continues to innovate in the field of chemical production. His work has been instrumental in developing methods that enhance the efficiency and effectiveness of agricultural chemicals.
Collaborations
He has collaborated with notable coworkers such as Yukio Suzuki and Kiyoshi Kasamatsu, contributing to the advancement of their shared goals in agricultural chemistry.
Conclusion
Kohichi Aketa's contributions to agricultural chemistry through his innovative patents highlight his role as a significant inventor in the field. His work continues to influence the production of essential chemical intermediates