Question

identify the reaction 2CH=CH+HCN(red hot tube)​

Answer 1

Answer:

pyridine

Explanation:

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Answer 2

The reaction 2CH=CH+HCN(red hot tube)​ is known as Diels-Alder reaction.

Diels-Alder reaction

It is an important reaction in organic chemistry where a substituted alkene and a conjugated diene react to give cyclohexane.

An example of this reaction is the formation of benzene. During this reaction, acetylene and hydrogen cyanide is passed through a red hot tube at 873K in the ratio of 2:1 to form benzene as,

                                                    red hot tube/Fe

2CH=CH        +         HCN                   →                         C₆H₆

(acetylene)      (hydrogen cyanide)       873K                 (benzene)

The above reaction is a basic reaction used for the preparation of benzene and this is an example of a catalytic conversion reaction.