structural formula Amines


In this article we will discuss 2-methylbutanol-2 in detail. Receipt. Isomers. Reactions: obtaining an alcoholate, substitute. hydroxy groups to halogen, hard oxidation, intramolecular dehydration, amine production, nitric acid ester production, ester production, combustion.


Suggested name2-methylbutanol-2
ClassesAlcohols (alcohols)

Monohydric alcohols

Tertiary alcohols

Molar mass88 g/mol
Gross formulaC5H12O  _  _  _  _




2-methylbuten-3-ol-2 + hydrogen → (nickel) → 2-methylbutanol-2

Hydration of unsaturated compounds

2-methylbutene-1 + water → (sulfuric acid) → 2-methylbutanol-2

2-methylbutene-1 + water → (sulfuric acid) → 2-methylbutanol-2

Reaction of primary amines with nitrous acid*

Reaction of primary amines with nitrous acid

2-methylbutanamine-2 + nitric acid → 2-methylbutanol-2 + nitrogen ↑ + water

The reaction proceeds in two stages: sodium nitrite with hydrochloric acid give nitrous acid, which reacts with the amine.

Displacement of alcohols and phenols from their salts

Displacement of alcohols and phenols from their salts

Sodium 2-2-methylbutanol-2-ate + sulfuric acid → 2-2-methylbutanol-2 + sodium sulfate

Alkaline hydrolysis of haloalkanes, obtaining alcohols

Alkaline hydrolysis of haloalkanes, obtaining alcohols

2-bromo-2-methylbutane + sodium hydroxide (aqueous solution) → 2-methylbutanol-2 + sodium bromide

Hydrolysis of alcoholates

Hydrolysis of alcoholates

Sodium 2-methylbutanol-2-ate + water → 2-methylbutanol-2 + sodium hydroxide

Grignard synthesis**

Grignard synthesis

acetone + ethylmagnesium chloride + water → 2-methylbutanol-2 + magnesium hydroxochloride
The process is carried out in two stages. Above is the summary equation of the two reactions.

Acid breakdown**

Acid breakdown

Unsymmetrical ethers give a mixture of alcohols and a mixture of halides.

Grignard Synthesis with Ketones**

Grignard Synthesis with Ketones

ethylmagnesium bromide + acetone + water → 2-methylbutanol-2 + magnesium hydroxobromide

Chemical properties

Preparation of haloalkanes from alcohols

Preparation of haloalkanes from alcohols

2-methylbutanol-2 + hydrochloric acid → (conc sulfuric acid) → 2-methyl-2-chlorobutane + water

The interaction of alcohols with metals

The interaction of alcohols with metals

2 · 2-methylbutanol-2 + 2 · sodium → 2 · 2-methylbutanol-2-sodium sodium + hydrogen

Obtaining amines from alcohols

Obtaining amines from alcohols

2-methylbutanol-2 + ammonia → (t °, cat.) → 2-methylbutanamine-2 + water
The reaction can continue until secondary and tertiary amines are obtained, in practice a mixture of products is obtained.

Intramolecular dehydration of alcohols

Intramolecular dehydration of alcohols

2-methylbutanol-2 → (t ° = 180 ° C, sulfuric acid conc) → 2-methylbutane-2 + water

Obtaining esters of nitric acid*

Obtaining esters of nitric acid

2-methylbutanol-2 + nitric acid (conc) → 2-methylbutannitrate-2 + water
The reaction is reversible.

Hard oxidation of tertiary alcohols*

Hard oxidation of tertiary alcohols

5 2-methylbutanol-2 + 6 potassium permanganate + 9 sulfuric acid → (t°) → 5 acetone + 5 acetic acid + 3 potassium sulfate + 6 manganese(II) sulfate + 14 water
Tertiary alcohols oxidize only under harsh conditions. Since the CC bond can be broken on any of the three sides of the C-OH group, unsymmetrical tertiary alcohols give a complex mixture of products.

Acylation with acid halides*

 Acylation with acid halides

2-methylbutanol-2 + acetyl chloride → acetic acid tert-pentyl ester + hydrochloric acid

Treatment with strong chlorinating agents**

Treatment with strong chlorinating agents

2-methylbutanol-2 + phosphorus(V) chloride → 2-methyl-2-chlorobutane + hydrochloric acid + phosphorus oxychloride



2 2-methylbutanol-2 + 15 oxygen → (t°) → 10 carbon dioxide + 12 water

Alexander Stephenson

Candidate of Chemical Sciences, editor-in-chief of Guide-scientific.com. Lecturer at several international online schools, member of the jury of chemistry competitions and author of scientific articles.

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