Step 1: Deprotonation of the thiamine: NaOH attacks thiamine and deprotonates it. It is a condensation, since a molecule of H2O is released. There is a formation of a carbine, which is very reactive.
Step 1: Deprotonation of the thiamine: NaOH attacks thiamine and deprotonates it. It is a condensation, since a molecule of H2O is released. There is a formation of a carbine, which is very reactive.