Kunihiko Tsutsumi

Title: Kunihiko Tsutsumi: Innovator in Optically Active Alcohol Production

Introduction

Kunihiko Tsutsumi is a notable inventor based in Soka, Japan. He has made significant contributions to the field of chemistry, particularly in the production of optically active alcohols. With a total of five patents to his name, Tsutsumi's work has advanced the methods used in chemical synthesis.

Latest Patents

Among his latest patents, Tsutsumi has developed a process for producing optically active secondary alcohols. This method involves hydrogenating a substrate carbonyl compound with a ruthenium complex that utilizes specific optically active diphosphine compounds and readily synthesized amine compounds. The process allows for high optical purity and efficiency, particularly when reacting aromatic ketones and heteroaromatic ketones with hydrogen or hydrogen-donating compounds. Another significant patent focuses on producing optically active alcohols while minimizing racemization. This innovation employs a solvent system that enables the asymmetric catalyst and formate salt to coexist in the same phase, thus improving reaction conditions.

Career Highlights

Throughout his career, Tsutsumi has worked with prominent organizations such as Kanto Kagaku Kabushiki Kaisha and the Nagoya Industrial Science Research Institute. His experience in these institutions has contributed to his expertise in chemical processes and patent development.

Collaborations

Tsutsumi has collaborated with notable individuals in his field, including Kunihiko Murata and Noriyuki Utsumi. These partnerships have likely enhanced his research and innovation capabilities.

Conclusion

Kunihiko Tsutsumi's contributions to the field of optically active alcohol production demonstrate his innovative spirit and dedication to advancing chemical synthesis. His patents reflect a commitment to improving efficiency and purity in chemical processes.