The Negishi coupling revolutionized synthetic organic chemistry by utilizing organozinc compounds and palladium or nickel catalysts to create carbon-carbon bonds.
Academic Foundations and Early Career
Born in 1935 in Hsinking, Ei-ichi Negishi spent his early years living in Harbin, Incheon, and Kyongsong before moving to Japan in 1945. After graduating from the University of Tokyo in 1958, he began his professional journey as an intern at Teijin, focusing on polymer chemistry. He later relocated to the United States as a Fulbright Scholar, obtaining his Doctor of Philosophy from the University of Pennsylvania in 1963 under the mentorship of Allan R. Day.
Twenty questions, eight minutes on the clock, and a percentile measured against everyone who has taken it. No sign-up.
Take the IQ test →Transition to Academic Research
Following a period at Teijin, Negishi transitioned to academic research, joining Purdue University as a postdoctoral associate in 1966 to work with Herbert C. Brown. He served as an instructor at Purdue until 1972, when he accepted an assistant professorship at Syracuse University. In 1979, he was promoted to associate professor at Syracuse before returning to Purdue University to serve as a full professor, where he spent the remainder of his active career.
Development of Cross-Coupling Technology
Negishi’s primary scientific achievement was the discovery of the Negishi coupling. Beyond zinc-based reactions, he documented the viability of organoaluminum and organozirconium compounds for cross-coupling. Additionally, he identified the reagent known as the Negishi reagent, derived from zirconocene dichloride. By choosing not to patent his coupling technology, he ensured that his results remained freely accessible for widespread use within the scientific and industrial research communities.
Nobel Recognition and Retirement
In 2010, Negishi was awarded the Nobel Prize in Chemistry alongside Richard F. Heck and Akira Suzuki for their collective work on palladium-catalyzed cross-couplings. By the time of his retirement in 2019, he had authored over 400 academic papers and served as the director of the Negishi-Brown Institute. He remained a dedicated member of several professional bodies, including the National Academy of Sciences and the American Academy of Arts and Sciences.
Fast facts
- Born: 1935, Hsinking
- Died: 2021, Indianapolis
- Education: University of Tokyo, University of Pennsylvania
- Primary Field: Organic Chemistry
- Notable Award: Nobel Prize in Chemistry (2010)
- Professional Roles: Professor, Researcher, Chemist
- Career Employers: Purdue University, Syracuse University, Teijin, Hokkaido University
- Citizenship: Japan, United States
Questions readers ask
Why did Negishi decline to patent his coupling technology?
He believed that by not obtaining a patent, his results would be more easily accessible for all researchers to use.
What is the Negishi reagent?
It is a compound obtained by reducing zirconocene dichloride, which is utilized in oxidative cyclisation reactions.
Achievements
- Nobel Prize in Chemistry — 2010
- Held posts at Hokkaido University, Purdue University and Syracuse University
- Educated at University of Pennsylvania and University of Tokyo
- Fields of research: organic chemistry
