Company Filing History:

8 out of 191

Sagami Chemical Research Center

patents

3 out of 1,000

Central Glass Company, Limited

where one patent can have more than one assignee

Years Active: 1976-1991

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4999451 - Process for preparing dihalovinylcyclopropanecarboxylates (1991-03-12),

2. 4833266 - Process for preparing dihalovinylcyclopropanecarboxylates (1989-05-23),

3. 4681953 - Process for preparing dihalovinylcyclopropanecarboxylates (1987-07-21),

4. 4540835 - Preparation of 2-trifluoromethylpropanol by vapor phase hydrogenation of (1985-09-10),

5. 4467124 - Preparation of 1,1,1,3,3,3-hexafluoropropane-2-ol by vapor phase (1984-08-21),

6. 4386223 - Method of purifying hexafluoroacetone containing chlorofluoroacetones (1983-05-31),

7. 4245108 - Process for preparing 2-thio-2-substituted-alkanoic acid derivatives (1981-01-13),

8. 4214097 - Process for preparing dihalovinylcyclopropanecarboxylates (1980-07-22),

9. 4166064 - Process for preparing high cis (1979-08-28),

10. 4092482 - Process for preparing 6,6,6-trihalo-3,3-dimethyl-4-hexenoates (1978-05-30),

11. 3988380 - Process for preparing 1,2-disubstituted-trans-olefins (1976-10-26),

Title: Akira Negishi: Innovator in Chemical Synthesis

Introduction

Akira Negishi is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of chemical synthesis, particularly in the development of novel insecticides. With a total of 11 patents to his name, Negishi's work has had a substantial impact on agricultural chemistry.

Latest Patents

Negishi's latest patents focus on the process for preparing dihalovinylcyclopropanecarboxylates. These patents describe a novel synthesis that includes potent insecticides. The processes begin with the reaction between an alkenol and an orthoester to produce a gamma-unsaturated carboxylate. This is followed by the catalyzed addition of a carbon tetrahalide to the double bond and dehydrohalogenation to produce a cyclopropane derivative.

Career Highlights

Throughout his career, Negishi has worked with notable companies such as Sagami Chemical Research Center and Central Glass Company, Limited. His innovative approaches have led to advancements in chemical processes and applications.

Collaborations

Negishi has collaborated with several esteemed colleagues, including Kiyoshi Kondo and Kiyohide Matsui. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise.

Conclusion

Akira Negishi's contributions to chemical synthesis and his innovative patents have established him as a key figure in the field. His work continues to influence the development of effective insecticides and chemical processes.

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