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Koch"s reaction - traducción al árabe

IN GATTERMAN REACTION(A MODIFICATION OF SANDMEYER REACTION) THE CATALYST CU POWDER IN THE PRESENCE OF HALOGEN ACID (HCL OR HBR)

Gattermann–Koch reaction; Gatterman-Koch reaction; Gatterman reaction; Gattermann Koch reaction; Gattermann aldehyde synthesis; Gatterman-Koch; Gatterman-Koch Reaction; Gattermann-Koch reaction; Gattermann formylation; Gattermann–Koch formylation; Gattermann-Koch formylation

Koch's reaction

‎ تَفاعُلُ كُوخ:في السُّل‎

Action and reaction

PART OF NEWTON'S LAWS

Action and Reaction; Action and reaction; Reaction force; Reactive force; Law of action and reaction

فعل ورد فعل

reaction

WIKIMEDIA DISAMBIGUATION PAGE

RXN; Reactions; Reaction (disambiguation)

‎ تَفاعُل, استجابة:للتنبيه‎

Definición

reaction

(reactions)

Frequency: The word is one of the 1500 most common words in English.

1.

Your reaction to something that has happened or something that you have experienced is what you feel, say, or do because of it.

Reaction to the visit is mixed...

He was surprised that his answer should have caused such a strong reaction.

N-VAR: usu with supp

2.

A reaction against something is a way of behaving or doing something that is deliberately different from what has been done before.

All new fashion starts out as a reaction against existing convention...

N-COUNT: N against n

3.

If there is a reaction against something, it becomes unpopular.

Premature moves in this respect might well provoke a reaction against the reform...

N-SING: also no det, N against n

4.

Your reactions are your ability to move quickly in response to something, for example when you are in danger.

The sport requires very fast reactions.

N-PLURAL: oft poss N

5.

Reaction is the belief that the political or social system of your country should not change.

Thus, he aided reaction and thwarted progress.

N-UNCOUNT [disapproval]

6.

A chemical reaction is a process in which two substances combine together chemically to form another substance.

Ozone is produced by the reaction between oxygen and ultra-violet light...

N-COUNT

7.

If you have a reaction to a substance such as a drug, or to something you have touched, you are affected unpleasantly or made ill by it.

Every year, 5000 people have life-threatening reactions to anaesthetics...

N-COUNT: oft adj N to n

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Wikipedia

Gattermann reaction

The Gattermann reaction, (also known as the Gattermann formylation and the Gattermann salicylaldehyde synthesis) is a chemical reaction in which aromatic compounds are formylated by a mixture of hydrogen cyanide (HCN) and hydrogen chloride (HCl) in the presence of a Lewis acid catalyst such as AlCl₃. It is named for the German chemist Ludwig Gattermann and is similar to the Friedel–Crafts reaction.

Modifications have shown that it is possible to use sodium cyanide or cyanogen bromide in place of hydrogen cyanide.

The reaction can be simplified by replacing the HCN/AlCl₃ combination with zinc cyanide. Although it is also highly toxic, Zn(CN)₂ is a solid, making it safer to work with than gaseous HCN. The Zn(CN)₂ reacts with the HCl to form the key HCN reactant and Zn(Cl)₂ that serves as the Lewis-acid catalyst in-situ. An example of the Zn(CN)₂ method is the synthesis of mesitaldehyde from mesitylene.

https://en.wikipedia.org/wiki/Gattermann reaction