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It can be made in the following ways:
Use concentrated sulfuric acid first.
Propylene is obtained by elimination, and then added to HBR, most of which becomes 2-bromopropane according to the Marhalanobis rule, and then hydrolyzed to obtain 2-propanol.
N-propanol. N-propanol), also known as 1-propyl alcohol, propanol. There are things like ethanol.
Odorous colorless transparent liquid, soluble in water, ethanol, ether. Propionaldehyde is synthesized from ethylene by carbonyl group, and then reduced to obtain.
It is mainly used as a solvent, such as a large number of inks, and can also replace ethanol with a lower boiling point as a solvent, and in the polyamide of printing and dyeing plastic films.
Inks have a special role in solvents. It is also used for color layer analysis. As an intermediate, it is mainly used to make n-propylamine propyl ester, propionamide, etc.
Isopropanol. An organic compound, an isomer of n-propanol, also known as dimethylmethanol and 2-propanol, is also known as IPA in the industry. It is a colorless transparent liquid that resembles ethanol and acetone.
The smell of the mixture. Soluble in water, also soluble in alcohol, ether, benzene, chloroform.
and most other organic solvents.
Isopropanol is an important chemical product and raw material. Mainly used in pharmaceuticals, cosmetics, plastics, spices, coatings, etc.
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Now that you know the answer to this question, you're fine. As for why water is added after hydrolysis to produce 2-propanol. Because this topic is not in the scope of your research.
So you're digging into the horns. Don't learn like this'Otherwise, you may be like this with every question, and it will be troublesome. Don't think too much about it, believe in yourself.
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Method for synthesizing 1-propanol into 2-propanol:
1. First, 1-propanol is dehydrated under the action of concentrated sulfuric acid, or propylene is generated by high-temperature gas phase dehydration catalyzed by aluminum oxide.
2. Then add water and hydrate under acid catalysis to obtain 2-propanol.
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First, 1-propanol is dehydrated under the action of concentrated sulfuric acid, or propylene is produced by high-temperature vapor phase dehydration catalyzed by aluminum oxide, and then 2-propanol is obtained by adding water and hydration under acid catalysis.
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Method for synthesizing 1-propanol into 2-propanol:
1. First, 1-propanol is dehydrated under the action of concentrated sulfuric acid, or Bulu uses high-temperature vapor phase dehydration catalyzed by aluminum oxide to produce propylene.
2. Then add water and hydrate under acid catalysis to obtain 2-propanol.
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1-Propanol was added to HBR to make 1-bromopropane fiber, and 1-bromopropane was reacted with magnesium powder in ether or tetrahydrofuran solvent to make Grignard reagent (CH3CH2CH2MGBR).
Grignard reagent reacts with formaldehyde to obtain CH3CH2CH2CH2OMGBR (to be reacted in an aprotic dissolving agent).
CH3CH2CH2CH2OMGBR was hydrolyzed to obtain the target product (1-butanol).
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Propylene can be eliminated with concentrated sulfuric acid first, and then added to HBR to become mostly 2-bromopropane according to the Marhalanobis rule, and then hydrolyzed to obtain 2-propanol.
2-Propanol has an odor similar to a mixture of ethanol and acetone. Soluble in water, but also soluble in alcohol, ether, benzene, chloroform and other organic solvents. Isopropanol is an important chemical product and raw material.
It is mainly used in pharmaceuticals, well-known socks and cosmetics, plastics, spices, coatings, etc. 2-Propanol is prone to peroxide and is sometimes identified before use.
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Equation for the preparation of 1,2-propanediol from acetone.
The equation for the preparation of 1,2-propanediol from acetone is as follows: CH3C(O)CH3 + 2NaBH4 CH3CH(OH)CH2OH + 2NAB(OH)3In this reaction, acetone (CH3C(O)CH3) reacts with boron coarse sodium hydride (NaBH4) to form 1,2-propanediol (take crude CH3CH(OH) CH2OH) and hydroxide (NAB(OH)3) of sodium borohydride as by-products.
It is synthesized from ethanol as raw material by ethyl acetoacetate.
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