Medium-frequency acoustic methods and tools for the study of the aquatic environment.

The Electro-Oxidation of Hydrazine: A Self-Inhibiting Reaction

“…The pH was determined to be 9.7 as mentioned above. This value implies a p K a value of 8.3 which compares with the reported value of ∼8.0 for pure water at the same temperature (298 K) − implying a small thermodynamic salt effect due to the dissolved KNO 3 . The recorded anodic current, as displayed in Figure , is distinctly larger than that seen for (the acid adjusted) pH 7.0 (0.1 M KNO 3 ) in Figure B.…”

“…It is helpful therefore to consider first the speciation of hydrazine noting the p K a1 value of ca. 8.0 − and the p K a2 of ca. −1.0 − at 298 K which correspond to the following chemical equilibria …”

Direct Catalytic Symmetrical, Unsymmetrical N,N-Dialkylation and Cyclization of Acylhydrazides Using Alcohols

“…N-Acyl hydrazides are valuable reactive intermediates with widespread applications in synthesis of pharmaceuticals, polymer materials, and in agricultural chemistry and chemical industries. , Acylhydrazides analogues possess biological activities like PGI 2 agonists, papilloma virus inhibitors, D 1 dopamine receptor antagonists, tuberculostatic, antibacterial, anticonvulsant, and antifungal activities, and they are widely used as precursors for the synthesis of heterocyclic compounds . In particular, the cyclic acylhydrazide products are highly important in biological applications and synthesis of drugs (Figure S1).…”