The title compound, C(9)H(12)N(2)O(3), was synthesized by the reaction of ethyl 2-(4-meth-oxy-phen-oxy)acetate with hydrazine hydrate in ethanol. In the acetohydrazide group, the N-N bond is relatively short [1.413 (2) Å], suggesting some degree of electronic delocalization in the mol-ecule. In the crystal, mol-ecules are linked into sheets lying parallel to the ab plane by N-H⋯N and N-H⋯O hydr...

3-Mercapto-1,2,4 benzotriazine (1) was methylated by methyl iodide in the presence of base to afford 1,2-dihydro-3-methyhercapto-1, 2,4 benzotriazine (2). The latter was reacted with hydrazine hydrate to give the corresponding 3-hydrazine derivative (3). Compound (3) on condensation with phenacyl bromide gave 3- phenacyl hydrazino l,2,4-benzotriazine (4). PPA cyclization of the ketone (4) ...

Some new 3-heterocyclyl-1,2,3-benzotriazin-4(3H)-ones (7a-f) were prepared in moderate to good yields by nitrosation of N-heterocyclyl-2- aminobenzanilides (6a-f). The latter were obtained by hydrazine hydrate-graphite reduction of corresponding N-heterocyclyl-2-nitrobenzanilides (5a-f)

an efficient, mild and environmentally friendly method was reported for the synthesis of an efficient, mild and environmentally friendly method was reported for the synthesis of pyranopyroles from aryl aldehydes, ethyl acetoacetate, malononitrile and hydrazine hydrate in the presence of catalytic amounts of methyl imidazolium hydrogen sulfate ([hmim][hso4]) as an efficient catalyst. these synth...

Quantum-chemical modeling of the mechanism interaction between propargyl chloride and potassium 1,3-propanedithiolate in hydrazine hydrate–KOH system was carried out using combined approach CCSD(T)/6-31+G*//B3LYP/6-311++G**. The elementary stages reaction, possible intermediates transition states are established

Hydrazide chemistry is a powerful technique in glycopeptides enrichment. However, the low density of the monolayer hydrazine groups on the conventional hydrazine-functionalized magnetic nanoparticles limits the efficiency of glycopeptides enrichment. Herein, a novel magnetic nanoparticle grafted with poly(glycidyl methacrylate) (GMA) brushes was fabricated via reversible addition-fragmentation ...