[Elnaz]

Hi there,

I need to know the role of Potassium Carbonate in hydration of alkyne. I know if it is not added, the yield product is reduced. what product might well be expected if it were omitted?


thanks

[billnotgatez]

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[Dan]

I need to know the role of Potassium Carbonate in hydration of alkyne.

Under what conditions? There are several ways to hydrate an alkyne - your question is too ambiguous to answer.

[orgopete]

This looks like a procedure in which potassium carbonate was used to neutralize the acid used for the hydration of the alkyne. Given how incomplete this reaction is, I could imagine carbonate was used as a base to prevent the reaction from becoming too basic and catalyzing an aldol reaction.

[Elnaz]

Reaction's conditions come along with Hg2o and h2SO4+ H2O. After collecting distillate, we add 6.5 gr of potassium carbonate hydrate, and after dissolve we saturate the solution with sodium chloride. which is the other part of my question why we use these two compound to our distillate.
thanks orgopete. so with these explanation you still think potassium carbonate use for neutralize the acid?
thanks again for your responds.

[orgopete]

Reaction's conditions come along with Hg2o and h2SO4+ H2O. After collecting distillate, we add 6.5 gr of potassium carbonate hydrate, and after dissolve we saturate the solution with sodium chloride. which is the other part of my question why we use these two compound to our distillate.
thanks orgopete. so with these explanation you still think potassium carbonate use for neutralize the acid?
thanks again for your responds.

The crude product apparently co-distills water and some acid. The NaCl will absorb water and I think K2CO3 does as well. The K2CO3 will neutralize any acid carried over with the distillation. The K2CO3 is after the alkyne has reacted with acid, so it isn't part of an alkyne reaction.

[Elnaz]

thank you so much orgopete!