Abstract
Tetrabromomethane functions as an organic catalyst for non‐redox reactions of carbonyl species and, in particular, it enhances the aldehyde–acyl hydrazide condensation to give N‐acyl hydrazones. This simple, inexpensive, and commercially available halomethane provides up to 14‐fold acceleration of the Schiff reaction; the kinetic data indicate that the studied condensation exhibits the first order on CBr4. The catalytic activity of CBr4 is significantly higher than the activity of other halogen‐containing species, such as CHX3 or ArX (X = Cl, Br, I).
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