Question

convert acetylene into 1- butyne?​

Answer 1

Answer:

Explanation:

The preparation of higher alkynes from the lower alkynes :

This reaction involves two steps :

Step 1 : When the terminal ethyne react with the sodamide to give acetylides.

Step 2 : When acetylides react with haloalkane (ethylchloride) to give but-1-yne as higher alkynes.

Answer 2

This is the process used to increase the length of the carbon chain from 2 carbon to 4 carbon chain.

Conversion process

• Conversion of acetylene or ethyne to 1-butyne carried out in 2 steps.
• As acetylene contains more acidic hydrogen it can be replaced easily with the other positive ion like sodium ion when it is treated with sodamide $NaNH_2$, forming Sodium acetylide.
• This Product when it is treated with ethyl chloride forms 1-butyne.
• Thus the above steps leads to the formation of 1-butyne from acetylene.