So this is the aldos product that we form in this reaction. So what happens is this Sigma bond is broken as a result of a Pi bond that is formed between this oxygen and this carbon. And so when this Sigma bond is broken, this H ion basically departs. We form this Pi bond and that breaks the sigma bond. But as the sigma bond is broken, a pi bond is being formed between this carbon and this carbon. Now, as the pi bond is being broken, this pi bond breaks, and the two electrons in the pi bond end up on the nitrogen.