Toshiro Narita

Title: Toshiro Narita: Innovator in Optically Active Compounds

Introduction

Toshiro Narita is a notable inventor based in Shima, Japan. He has made significant contributions to the field of chemistry, particularly in the preparation of optically active compounds. His work has implications in various applications, including pharmaceuticals and chemical synthesis.

Latest Patents

Toshiro Narita holds a patent for a process related to the preparation of optically active α-phenylglycine. The patent describes how DL-α-phenylglycine can be combined with benzene-sulfonic acid, p-ethylbenzenesulfonic acid, or m-xylenesulfonic acid to produce a salt. This salt may exhibit greater solubility in a sulfuric acid solution compared to the salt of the optically active isomer, depending on the concentration of the sulfuric acid solution. The optical resolution is then achieved through fractional crystallization, allowing for the liberation of the sulfonic acid portion to yield optically active D- or L-α-phenylglycine.

Career Highlights

Toshiro Narita is associated with Nippon Kayaku Kabushiki Kaisha, a company known for its advancements in chemical products and pharmaceuticals. His work at the company has been instrumental in developing innovative processes that enhance the efficiency and effectiveness of chemical synthesis.

Collaborations

Throughout his career, Toshiro has collaborated with esteemed colleagues such as Shigeru Aoki and Yasuhisa Tashiro. These collaborations have fostered a productive environment for innovation and research in the field of chemistry.

Conclusion

Toshiro Narita's contributions to the preparation of optically active compounds highlight his role as an influential inventor in the chemical industry. His patent and collaborative efforts continue to impact the field positively.