87829-01-4Relevant articles and documents
Synthesis, spectral analysis, structural elucidation and quantum chemical studies of (E)-methyl-4-[(2-phenylhydrazono)methyl]benzoate
?ahin, Zarife Sibel,?en?z, Hülya,Tezcan, Habibe,Büyükgüng?r, Orhan
, p. 91 - 100 (2015)
The title compound, (E)-methyl-4-[(2-phenylhydrazono)methyl]benzoate, (I), (C15H14N2O2), has been synthesized by condensation reaction of methyl-4-formylbenzoate and phenylhydrazine. The compound has been charac
Experimental and quantum chemical studies of the structural and spectral properties of novel diazenyl formazans
Tezcan, Habibe,?en?z, Hülya,Tokay, Nesrin
, p. 171 - 183 (2019/04/29)
A new series of 3-(p-substitutedphenyl)-5-phenyl-1-(4-phenyldiazenyl)phenylformazans were synthesized by coupling p-substituted phenyl or pyridinylhydrazones with p-aminoazobenzene diazonium chloride. All compounds were characterized by FT-IR, UV–Vis, 1H NMR, and 13C NMR spectroscopic techniques, and HR-MS. DFT was used to calculate the molecular structures and 1H and 13C chemical shift values of the synthesized compounds with PBE1PBE functional and 6-311G(2d,2p)basis set combination. The IR spectra of the novel formazans were calculated using DFT at PBE1PBE/6-311G(d,p)level of theory. The electronic absorption spectra of the optimized structures were evaluated by TD-DFT method at PBE1PBE/6-311G(2d,2p)level of theory. The absorption spectra of the synthesized diazenyl formazans were investigated in three different solvents. A good correlation was established between the experimental data and calculated results.
Ion-pairing catalysis in the enantioselective addition of hydrazones to N-acyldihydropyrrole derivatives
Zabaleta, Nagore,Uria, Uxue,Reyes, Efraim,Carrillo, Luisa,Vicario, Jose L.
supporting information, p. 8905 - 8908 (2018/08/17)
We have demonstrated that dihydropyrrole-based enamide derivatives can act as efficient precursors of chiral quaternary N-acyliminium salts under Br?nsted acid catalysis that undergo reactions with hydrazones, the latter participating as masked nucleophilic carbonyl group equivalents. The optimized methodology provides a variety of enantiopure α-substituted proline derivatives in excellent yields, being even compatible with disubstituted β-enamides that generate two contiguous stereocentres.