How do you prepare 1- hexyne from ethyne?

Answer 1

To prepare 1-hexyne from ethyne, you would first need to convert ethyne to 1-bromohexane through a series of reactions. Ethyne would undergo bromination to form 1,2-dibromoethane, followed by a substitution reaction with sodium cyanide to form 1-cyano-1,2-dibromoethane. Finally, hydrolysis of the nitrile group would yield 1-hexyne. This multi-step process allows for the conversion of ethyne to 1-hexyne through intermediate compounds.

Answer 2

Form half acetylide salt with NaOH and then react with n-butyl chloride.

Edit by some other dude named Timaeus:

That is not entirely clear, so I will improve the answer. It's much simpler than that. React with NaNH2 in NH3(l) to deprotonate it, then react with bromobutane.

Answer 3

To prepare 1-hexyne from ethyne, you can first convert ethyne to 1-bromohexane using bromine. Then, treat 1-bromohexane with a strong base, such as potassium tert-butoxide, in a solvent like dimethyl sulfoxide (DMSO) to eliminate a hydrogen bromide molecule and form 1-hexyne.