Yasuyuki Nakae

Title: The Innovative Contributions of Yasuyuki Nakae in Pyridazine Compounds

Introduction: Yasuyuki Nakae, a prominent inventor based in Takarazuka, Japan, is recognized for his significant contributions to the field of chemical engineering. With a total of three patents to his name, he has made remarkable strides in the development of pyridazine compounds, which are vital for various applications, including plant disease control.

Latest Patents: Nakae's latest inventions focus on intricate processes for the production of pyridazine compounds. His first notable patent describes a method for producing a pyridazine compound represented by formula [1]. This compound is identified as an active ingredient in a plant disease control agent and is synthesized through several steps: first, obtaining a compound represented by formula [3] by reacting a compound from formula [4] with another from formula [5]; next, producing compound [2] by deprotecting compound [3]; and finally reacting compound [2] with a chlorinating agent.

The second of Nakae’s recent patents presents a process for producing a pyridazinone compound along with its production intermediates. This invention outlines a two-step process where, in step 1, a reaction occurs between a compound of formula (2) and one of formula (3) in the presence of a Lewis acid to yield an adduct. Step 2 involves the reaction of this adduct with hydrazine to ultimately achieve the desired compound of formula (1).

Career Highlights: Yasuyuki Nakae has developed an impressive profile throughout his career at Sumitomo Chemical Company, Limited. His role within this innovative company has enabled him to contribute substantially to the field of chemical synthesis. His focus on pyridazine and pyridazinone compounds showcases his expertise and commitment to advancing agricultural chemical solutions.

Collaborations: Throughout his career, Nakae has collaborated with talented colleagues, including Takashi Miyamoto and Takayuki Wakamatsu. These partnerships have allowed for a productive exchange of ideas and expertise, further enhancing the development of their shared projects in chemical production.

Conclusion: Yasuyuki Nakae's innovative work in the realm of pyridazine compounds underscores his status as a notable inventor. With three vital patents securing his contributions to the field, he remains a significant figure in chemical engineering, particularly in enhancing the efficacy of plant disease control agents through his innovative processes. As the agricultural and chemical industries continue to evolve, Nakae’s work will likely have lasting implications for future developments.