“…The use of hydrazine hydrate as a hydrogen donor for unsaturated organic compounds has been known for decades. , There are numerous experimentally and theoretically based arguments indicating that the active hydrogen transfer reagent is not hydrazine, but diimide (NHNH). , The most widespread application has been found in the saturation of olefins or multiple carbon–carbon bonds . Also, nitro groups have been reduced to the corresponding amines but only in the presence of metal catalysts, such as Pd, Ni, and Ru. ,, Aldehydes and ketones can be converted into alkanes by the use of hydrazine under harsh Wolff–Kishner conditions (high temperature, solid KOH), , where the corresponding alcohol has been reported as a byproduct . Although hydrazine is considered as a reducing agent, the reduction of aldehydes or ketones to the corresponding alcohols has largely been considered unfeasible due to the rapid condensation reactions .…”