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What molecule results from treating 4-oxopentanal with $\ce{NH4Cl}$ and $\ce{NaCNBH3}$? Why? Is this a good, high yield reaction?

I believe that pyrrolidine is formed because amination will convert one carbonyl to an amine that reacts with the other carbonyl. However, I am unsure how reasonable this is and I'm unsure what happens to the original carbonyl oxygen.

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    $\begingroup$ Reductive amination is OK. Succindialdehyde is harder to come by than pyrrolidine. $\endgroup$ – user55119 Jul 31 '20 at 2:17
  • $\begingroup$ The carbonyl oxygens are lost as water during imine formation $\endgroup$ – Waylander Jul 31 '20 at 5:48

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