chemistry

Kensō Soai

Kensō Soai is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kensō Soai rather than just read about it. In short: Kensō Soai (硤合憲三, Soai Kensō) (born 1950) is a Japanese organic chemist. He is a university lecturer in the Applied Chemistry Department of Tokyo University of Science.

Key takeaways

Kensō Soai belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kensō Soai to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kensō Soai from memory before moving on to harder problems.

Reference excerpt

Kensō Soai (硤合憲三, Soai Kensō) (born 1950) is a Japanese organic chemist. He is a university lecturer in the Applied Chemistry Department of Tokyo University of Science. Soai studied at the University of Tokyo, where he received his Ph.D. in 1979 in organic synthesis under Teruaki Mukaiyama and was a fellow of the Japan Society for the Promotion of Science. He conducted his postdoctoral studies with Ernest L. Eliel at the University of North Carolina. In 1981, he became a lecturer at Tokyo University of Science, and was promoted to associate professor (1986) and full professor (1991). He is involved in asymmetric and enantioselective synthesis, asymmetric autocatalysis, origin of chirality, The Soai reaction for alkylation of pyrimidine-5-carbaldehyde with diisopropylzinc is named after him. Soai was a visiting professor to many universities such as the ESPCI Paris (2001), Kyushu University (2005), Waseda University (2007–2010), University of Strasbourg (2008), and Jilin University (2010–2015).

Honors Inoue Prize (2000) Chirality Medal (2005) Honorary member of the Italian National Academy of Sciences (2006) Science and Technology Prize from MEXT, the Japanese Ministry of Education, Culture, Sports, Science and Technology (2007) Chemical Society of Japan Award (2010) Japanese Purple Ribbon Medal (2012) Doctor Honoris Causa, University of Pannonia, Hungary, 2015

References

Worked examples

Example 1 — a first encounter with Kensō Soai

Start with the simplest possible case. Write down what Kensō Soai claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kensō Soai before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kensō Soai ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kensō Soai

In research: Kensō Soai appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Kensō Soai in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Kensō Soai is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1950 births, Japanese chemists, Japanese scientist stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Kensō Soai outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Kensō Soai in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kensō Soai means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Kensō Soai out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kensō Soai in simple terms?

Kensō Soai (硤合憲三, Soai Kensō) (born 1950) is a Japanese organic chemist. He is a university lecturer in the Applied Chemistry Department of Tokyo University of Science.

Why does Kensō Soai matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kensō Soai?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kensō Soai.