# Can aldol reaction occur during α-halogenation of ketone?

I know both aldol and $\alpha$-halogenation reaction well.

I know that in and aldol reaction, the carbonyl containing molecules like ketones and aldehydes attacks themselves when base like $\ce{OH-}$ attacks $\alpha$-proton.

The same thing also happens in $\alpha$-halogenation of these carbonyl containing molecules.

So my question is that in presence of halogen, before the double bond of the enol can attack halogen atom of $\ce{Br2}$, $\ce{Cl2}$, $\ce{I2}$ in $\alpha$-halogenation, can aldol reaction reaction occur by double bond of the enol attacking another carbonyl containing molecules?

• Hello, I have edited your question using MathJax. Learn more on how to use it here: chemistry.meta.stackexchange.com/questions/86/… – Pritt Balagopal Apr 27 '17 at 3:44
• @PrittBalagopal You can (and should) also edit out unnecessary "statements of weakness", like thanks and similar salutations. – Martin - マーチン Apr 27 '17 at 5:09
• Carbonyl compounds, in general are quite bulky and poorly electrophilic They only react when no other better electrophile is around. The major products would definitely be the $\alpha$-halogenated ketone, while some minor amounts of aldol may form. – Pritt Balagopal Apr 28 '17 at 14:54