chemistry

Oxycarboxin

Oxycarboxin 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 Oxycarboxin rather than just read about it. In short: Oxycarboxin is an organic chemical used in agriculture to protect crops from fungal diseases. It was first marketed by Uniroyal in 1969 under the brand name Plantvax.

Key takeaways

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

Reference excerpt

Oxycarboxin is an organic chemical used in agriculture to protect crops from fungal diseases. It was first marketed by Uniroyal in 1969 under the brand name Plantvax. The compound is a benzanilide analog which combines a heterocyclic acid with aniline to give an inhibitor of succinate dehydrogenase (SDHI).

Synthesis Oxyxarboxin was first made by the oxidation of carboxin, as disclosed in patents filed by Uniroyal.

Ethyl 2-chloroacetoacetate is treated with 2-mercaptoethanol and base, followed by cyclisation and water removal under acidic conditions. The resultant ethyl ester of the 1,4-oxathiine heterocycle is then formed into an amide with aniline using standard conditions via the carboxylic acid and acid chloride. This gives carboxin in high overall yield. The synthesis is completed by treatment with 30% hydrogen peroxide in acetic acid.

Mechanism of action Carboxin and oxycarboxin act by inhibition of succinate dehydrogenase (SDHI): they bind to the quinone reduction site of the enzyme complex, preventing ubiquinone from doing so. As a consequence, the tricarboxylic acid cycle and electron transport chain cannot function.

Uses Oxycarboxin is used to control rust diseases (e.g. soybean rust) at an application rate of 200–400 g/ha.

History Oxycarboxin has been commercially available since 1969, when it was introduced under the brand name Plantvax.

References

Illustrations

Worked examples

Example 1 — a first encounter with Oxycarboxin

Start with the simplest possible case. Write down what Oxycarboxin 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 Oxycarboxin 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 Oxycarboxin 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 Oxycarboxin

In research: Oxycarboxin 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 Oxycarboxin 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: Oxycarboxin is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anilides, Cyclic sulfones, Fungicides, so understanding it makes those chapters shorter.
In everyday life: Look for Oxycarboxin 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 Oxycarboxin in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Oxycarboxin 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 Oxycarboxin out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Oxycarboxin in simple terms?

Oxycarboxin is an organic chemical used in agriculture to protect crops from fungal diseases. It was first marketed by Uniroyal in 1969 under the brand name Plantvax.

Why does Oxycarboxin 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 Oxycarboxin?

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 Oxycarboxin.