Kenso Soai

Soai developed asymmetric autocatalytic reactions, in which the reaction product itself acts as its own catalyst, capable of amplifying a tiny chiral bias starting from achiral raw materials.

The 2026 Nobel Prize in Chemistry was awarded to French chemist Henri Kagan and Japanese chemist Kenso Soai in recognition of their discovery of nonlinear effects and autocatalytic reactions in asymmetric organic synthesis.

The Soai reaction demonstrates an autocatalytic phenomenon in which the reaction product itself can act as a catalyst to promote its own formation, and an initial ee value of only 2% can climb to above 87% after multiple rounds of autocatalytic cycles.

Kagan's discovery of nonlinear effects and Soai's autocatalytic reaction together form the theoretical cornerstone for understanding the origin of homochirality in life.

The 2026 Nobel Prize in Chemistry was awarded to Henry B. Kagan and Kenzo Soai for their pioneering work in the field of asymmetric organic synthesis.

The 2026 Nobel Prize in Chemistry was awarded to Henri B. Kagan and Kenso Soai for their contributions to the field of asymmetric organic synthesis.

The Soai reaction can achieve chiral amplification from extremely low ee values (even 0.00005%) to near 100% ee.

In 1995, Japanese scientist Kenso Soai discovered the world's first chiral chemical reaction exhibiting autocatalysis.

The work of Kagan and Soai showed that autocatalytic processes can act as a "chiral amplifier"—even an extremely tiny chiral bias at the initial stage will be exponentially amplified after autocatalytic cycles and ultimately dominate the entire system.

The research of Kagan and Soai revealed that under certain conditions, a small excess of one chiral molecule can trigger a chain reaction, greatly amplifying the proportion of that chirality in the product, far beyond the proportion initially input.

Soai discovered the asymmetric autocatalytic reaction—the product itself can catalyze its own formation, achieving a chiral amplification effect, such that even if the ratio of the two enantiomers deviates only slightly at the start, the reaction can spontaneously amplify the deviation to nearly a single enantiomer.

In 2003, Soai reported an extraordinary result—under specific conditions, the reaction essentially produces a single enantiomer.

The SOAI reaction is an artificial chemical reaction that is not entirely the same as biochemical processes within living organisms, but it provides clues for exploring the origin of single-handedness in life on Earth.

The official Chinese translation of Japanese chemist Kenso Soai's name has been determined to be "硖合宪三".

Kenso Soai is a Japanese chemist known for discovering the Soai reaction.

In 1995, Soai and his colleagues reported a landmark asymmetric autocatalytic reaction: the addition of dialkylzinc reagents to pyrimidine-containing aldehydes, producing a chiral alcohol that can promote the reaction.

This year's Nobel Prize in Chemistry was awarded to French researcher Henri B. Kagan and Japanese scholar Kenso Soai.

Japanese chemist Kenso Soai was awarded the Nobel Prize in Chemistry.

The 2026 Nobel Prize in Chemistry was awarded to Henri B. Kagan and Kenso Soai.