Kenso Soai
Chemistry · Oct 7, 2026

Kenso Soai

“for the discovery of non-linear effects and autocatalysis in asymmetric organic synthesis”

Born
Hiroshima, Japan, 1950
Age at award
76
Affiliation at award
Tokyo University of Science
Key work

“Asymmetric autocatalysis and amplification of enantiomeric excess of a chiral molecule,” Nature, 1995

Career

  1. 1979PhD, University of Tokyo, under Teruaki Mukaiyama
  2. 1979–81Postdoc at UNC Chapel Hill with Ernest Eliel
  3. 1981Lecturer at the Tokyo University of Science. Full professor by 1991
  4. 1995Designs the first reaction that could make only one mirror image of a molecule: the Soai reaction
  5. 2001–15Visiting professor in Paris, Kyushu, Waseda, Strasbourg and Jilin
  6. 2016Retires; professor emeritus
  7. 2025Japan Academy Prize

Lesser-known facts

  • The Nobel announcement called his reaction “one of the most spectacular chemical experiments ever conducted.”
  • Said he never expected the prize, “let alone this year.”
  • Also said: “I may sound arrogant, but I had thought I would not get complaints if I won.”

Mentors and collaborators

Doctoral advisor
Teruaki Mukaiyama
Postdoc mentor
Ernest L. Eliel, UNC Chapel Hill
Frequent co-authors
Takanori Shibata, Itaru Sato, Keisuke Suzuki

Earlier honors

Inoue Prize (2000), Chirality Medal (2005), Purple Ribbon Medal (2012), Order of the Sacred Treasure (2023), Japan Academy Prize (2025)

The call · At the supermarket
Was grocery shopping near his home in Shiki, Saitama, when the call came: “One of the most exciting days in my life.”
The wait
31 years

From Soai reaction in 1995 to the chemistry prize in 2026.

2026 Nobel Prize winners

The other nine laureates

All 2026 Nobel Prize winners →

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