We know that methyl ketones and secondary alcohols oxidizable to methyl ketones, such as isopropanol. The only primary alcohol and aldehyde to undergo this reaction are ethanol and acetaldehyde, respectively. 1,3-Diketones such as acetylacetone also give the haloform reaction. Do Terminal Alkynes give Haloform Reaction if Yes then how the mechanism will follow?
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$\begingroup$ Maybe if you react with H2SO4/HgSO4 to make an aldehyde beforehand. I don't think a plain terminal alkyne will give the haloform test. $\endgroup$– Aniruddha DebJun 9, 2020 at 14:56
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$\begingroup$ And if it is attached to some aromatic ring ? $\endgroup$– SARTHAK AGARWALJun 9, 2020 at 14:58
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$\begingroup$ You should read this: chemistry.stackexchange.com/questions/135626/… $\endgroup$– user55119Jun 25, 2020 at 22:36
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Terminal alkynes, including phenyl acetylene, react with iodine (in MeOH) to give 1,2-diiodoalkenes according to this JOC paper here. Presence or absence of base will not alter the outcome. Presence of AgNO3 gives some di-iodo ketone which can then give rise to the iodoform reaction.
