Tadahiko Tsushima

Title: Innovations of Tadahiko Tsushima

Introduction

Tadahiko Tsushima is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of chemistry, particularly in the development of optically active compounds. With a total of six patents to his name, Tsushima's work has had a considerable impact on various applications, including insecticides.

Latest Patents

One of Tsushima's latest patents involves the process for the isolation of (-)-(S)-3-methylamino-4-methylenepyrrolidine derivatives. This innovative process allows for the isolation of these compounds from a racemic mixture through salt formation with L-(+)-tartaric acid and subsequent treatment with a base. This method eliminates the need for complicated resolutional crystallization, yielding optically pure forms in over 90% yield. Another significant patent pertains to S-difluoromethylhomocysteines, which are useful as selective insecticides.

Career Highlights

Throughout his career, Tsushima has worked with prominent companies such as Shionogi & Company Limited and Daikan Kogyo Co., Ltd. His experience in these organizations has contributed to his expertise in the field of chemical innovations.

Collaborations

Tsushima has collaborated with notable coworkers, including Mitsuaki Ohtani and Fumihiko Watanabe. These partnerships have likely enhanced his research and development efforts.

Conclusion

Tadahiko Tsushima's contributions to the field of chemistry through his patents and collaborations highlight his innovative spirit and dedication to advancing scientific knowledge. His work continues to influence various applications in the industry.