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What would be the probable reaction between acetone, $\ce{(CH3)2CO}$, and isopropyl alcohol, $\ce{CH3CHOHCH3}$, at room temperature without any catalyst in different concentrations?

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    $\begingroup$ There would be none. $\endgroup$ Sep 30 '16 at 5:42
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    $\begingroup$ As Ivan already said there would be no reaction. You might as well have any ketone with any alcohol - the only thing that could conceivably happen would be hemiacetal/acetal formation but that certainly needs acid catalysis. $\endgroup$
    – orthocresol
    Sep 30 '16 at 7:02
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    $\begingroup$ Unless you excite the acetone (UV irradiation), I'd suppose that nothing happens. $\endgroup$ Sep 30 '16 at 16:52
  • $\begingroup$ If something happened, you might be in real trouble washing out a reaction vessel with isopropanol as solvent at the end of the day... $\endgroup$
    – Zhe
    Oct 4 '16 at 2:21
  • $\begingroup$ with higher temperature , i think oxygen atom of hydroxide group give her lone pair to ketonic group of acetone with 1,3 proton shift give isopropyl isopropanol ether $\endgroup$ Aug 3 '20 at 15:24
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I've used acetone/ipa mix to flush chromatography columns. There is no reaction between them without another reagent present

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I mix rubbing alcohol and acetone together to clean flux off of stained glass that I have soldered. Nothing happens when you mix them.

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Obviously these liquids do not react with each other. But they can be interconverted. Isopropanol can be converted to acetone simply by heating over a copper catalyst (https://en.wikipedia.org/wiki/Isopropyl_alcohol). And as many readers know, sodium borohydride or lithium aluminum hydride reduces acetone to isopropanol (https://www.chemguide.co.uk/organicprops/carbonyls/reduction.html).

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