Which reaction converts 2-hexyne into trans-2 | vedclass

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(B) The reduction of an internal alkyne to a $trans$-alkene is achieved using dissolving metal reduction. Specifically,$2$-hexyne $(CH_3-C \equiv C-CH

Vedclass · Accepted Answer

$Li$ in liquid $NH_3$

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(B) The reduction of an internal alkyne to a $trans$-alkene is achieved using dissolving metal reduction. Specifically,$2$-hexyne $(CH_3-C \equiv C-CH_2-CH_2-CH_3)$ reacts with lithium $(Li)$ in liquid ammonia $(NH_3)$ to produce $trans$-$2$-hexene. This reaction proceeds via a radical anion intermediate,which favors the formation of the more stable $trans$-isomer. Option $A$ $(H_2 / Pd / BaSO_4)$ is Lindlar's catalyst,which produces a $cis$-alkene. Option $C$ $(H_2 / PtO_2)$ leads to complete hydrogenation to an alkane.

Which reaction converts $2$-hexyne into $trans$-$2$-hexene?

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