chemistry

Methylpentynol

Methylpentynol 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 Methylpentynol rather than just read about it. In short: Methylpentynol (also known as methylparafynol, trade names Dormison, Atemorin, Oblivon) is a tertiary pentynol with hypnotic/sedative and anticonvulsant effects and an exceptionally low therapeutic index. It was discovered by Bayer in 1913 and was used shortly thereafter for the treatment of insomnia, but its use was quickly phased out in response to newer drugs with far more favorable safety profiles.

Key takeaways

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

Reference excerpt

Methylpentynol (also known as methylparafynol, trade names Dormison, Atemorin, Oblivon) is a tertiary pentynol with hypnotic/sedative and anticonvulsant effects and an exceptionally low therapeutic index. It was discovered by Bayer in 1913 and was used shortly thereafter for the treatment of insomnia, but its use was quickly phased out in response to newer drugs with far more favorable safety profiles. The drug was marketed again in the United States, Europe and elsewhere from 1956 well into the 1960s as a rapid-acting sedative. The drug was quickly overshadowed at that point by benzodiazepines and is no longer sold anywhere.

Synthesis Methylpentynol is prepared by reaction of butanone (MEK) with sodium acetylide in liquid ammonia. This reaction must be done in anhydrous conditions and in an inert atmosphere.

Applications As building block in the synthesis of:

Phthalofyne (1,2-Benzenedicarboxylic acid, mono(1-ethyl-1-methyl-2-propynyl) ester) [131-67-9] Anansiol (1-ethyl-1-methylprop-2-ynyl carbamate) [302-66-9] Bason ( 2-Bromoethynyl-2-butanol) [2028-52-6]

Illustrations

Worked examples

Example 1 — a first encounter with Methylpentynol

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

In research: Methylpentynol 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 Methylpentynol 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: Methylpentynol is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alkynols, Anticonvulsant stubs, Anticonvulsants, so understanding it makes those chapters shorter.
In everyday life: Look for Methylpentynol 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 Methylpentynol in 20 minutes

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

Frequently asked questions

What is Methylpentynol in simple terms?

Why does Methylpentynol 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 Methylpentynol?

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 Methylpentynol.