A method providing a high yield (80–94%) for producing gamma-hydroxy-butanoic acids hydrazides by the interaction of various representatives cyclic esters with 85% hydrazine hydrate has been elaborated. It established that introduction gamma-hydroxypropyl residue into composition results in new biological properties.

The synthesis of chlorins was performed by hydrogenation porphyrins using diimide generated and consumed under mechanical activation. reaction conditions achievable ball milling, absence solvent use hydrazine hydrate as source, allowed the with high conversion, selectivity, nearly ideal sustainability scores (atom economy 97% E-factor 0.96).

A simplified, single-step aqueous synthesis route to tunable anisotropic silver nanocrystals (NCs) has been developed by tailoring the hydrogen-bonding interactions between a mild stabilizer, sodium citrate, and a mild reductant, hydrazine hydrate. The structure directing ability of the H-bonding interaction was harnessed by keeping a stoichiometric excess of hydrazine under ambient conditions ...

The compound Pyrazole derivatives, is prepared from p – Amino benzoic acid and ethanol. Chalcone has been prepared by the condensation reaction of Ethyl-4-acetamido benzoate and different ten aldehydes. These chalcones are cyclized with hydrazine hydrate and glacial acetic acid under reflux condition give pyrazole derivatives. These compounds have been characterized by detailed spectral analysi...

The title compound, C(26)H(18)Cl(2)N(2)O(2), was synthesized by the reaction of (5-chloro-2-hydroxy-phen-yl)(phen-yl)methanone with hydrazine hydrate. The mol-ecule possesses a crystallographically imposed centre of symmetry at the mid-point of the N-N bond. The conformation of the mol-ecule is stabilized by an intra-molecular O-H⋯N hydrogen bond.

The work described herein employs potassium hydroxide impregnated alumina (KOH-alumina) as a mild, efficient, and recyclable catalyst for a one-pot solvent-free and environmentally safer synthesis of 3,4,6-triarylpyridazines and some substituted pyridazines from active methylene carbonyl species, 1,2-dicarbonyls, and hydrazine hydrate by microwave (MW) irradiation. The method offers highly conv...

In the title compound, C16H10N4O2·0.17H2O, prepared by the one-step condensation reaction of isatin with hydrazine hydrate under microwave irradiation, the complete organic mol-ecule is generated by crystallographic inversion symmetry and therefore exists in an S-trans conformation. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, generating a three-dimensional framework with [001...

Fatty hydrazides (FH) have been successfully synthesized from palm oils by a one-step lipase catalyzed reaction. The synthesis was carried out by treating the oils with hydrazine hydrate at neutral pH using an immobilized lipase, Lipozyme as the catalyst. The percentages of conversion of RBD (refined, bleached and deodorized) palm oil (PO), RBD palm olein (POn), RBD palm stearin (PS) and RBD pa...

Electro-active elemental sulphur dissolved in hydrazine hydrate solvent was studied by d.c. polarography, cyclic voltammetry and millicoulometry in sodium acetate, ammonium tartrate and sodium phosphate buffers in an aqueous medium. The method, which uses a mercury electrode, is highly sensitive with less interference than other polarographic methods. The method was extended to the determinatio...