science

Methoxyacrylates

Methoxyacrylates is a science 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 Methoxyacrylates rather than just read about it. In short: Methoxyacrylates (more precisely β-methoxyacrylates) are a group of organic compounds primarily used as fungicides. They comprise an acrylic acid ester unit that also includes a methoxy group, making them a type of enol ether.

Key takeaways

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

Reference excerpt

Methoxyacrylates (more precisely β-methoxyacrylates) are a group of organic compounds primarily used as fungicides. They comprise an acrylic acid ester unit that also includes a methoxy group, making them a type of enol ether.

Structure and effect The methoxyacrylate group is derived from strobilurins. Strobilurins feature a diene unit, which renders them only slightly photostable. In their synthetic analogs, this diene unit is typically replaced by other structural elements, usually aromatic rings. Methoxyacrylates inhibit cytochrome c oxidase, thereby blocking electron transport and the respiratory chain in the mitochondrion of fungi. Specifically, the active ingredients bind to the binding site for the oxidation of ubiquinol. The interruption of the respiratory chain prevents the biosynthesis of adenosine triphosphate, leads to energy deficiency and thus to the death of the fungi. The methoxyacrylate unit is critical to this inhibitory effect, which is why the active substance group is named after it.

Representatives and use

Notable representatives of methoxyacrylates include azoxystrobin and picoxystrobin. Broadly speaking, the term also encompasses compounds lacking a methoxyacrylate unit, such as kresoxim-methyl, which features an oxime ether unit instead. This unit is isosteric with the enol ether unit, allowing the compound to exert a similar effect. Azoxystrobin was the first compound of this group to be approved in 1996, and more than ten compounds are now in commercial use. Additional representatives include pyraclostrobin, trifloxystrobin, fluoxastrobin, enoxastrobin, metominostrobin, coumoxystrobin, dimoxystrobin, fluacrypyrim, and orysastrobin. Methoxyacrylates are utilized as agricultural fungicides. Their primary advantage is their potent toxicity against a wide range of fungi, coupled with low toxicity in mammals, making them a vital class of active ingredients. Methoxyacrylates hold significant importance in the field of agricultural fungicides, with a substantial market share. In 1999, this group of active ingredients accounted for over 10% of the fungicide market, with sales totaling US$620 million, led by azoxystrobin, which alone generated approximately US$415 million in sales. In 2016, methoxyacrylates continued to dominate the fungicide market, with the top three fungicides by sales value—azoxystrobin, pyraclostrobin, and trifloxystrobin—all belonging to this group.

References

Illustrations

Worked examples

Example 1 — a first encounter with Methoxyacrylates

Start with the simplest possible case. Write down what Methoxyacrylates claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Methoxyacrylates 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 Methoxyacrylates 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 Methoxyacrylates

In research: Methoxyacrylates appears in science 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 Methoxyacrylates 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: Methoxyacrylates is common in secondary-school and first-year university syllabi. It links to neighbouring topics Carboxylate esters, Enol ethers, Fungicides, so understanding it makes those chapters shorter.
In everyday life: Look for Methoxyacrylates 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 Methoxyacrylates in 20 minutes

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

Frequently asked questions

What is Methoxyacrylates in simple terms?

Why does Methoxyacrylates matter?

Because it connects several science 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 Methoxyacrylates?

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 Methoxyacrylates.