Abstract:A series of novel cyano oximino sulfonate derivatives were prepared from the reaction of arylsulfonyl chloride with different cyanoacetamide-based oximes ranging from the simplest unsubstituted amide to analogues containing N-ethyl (mimicking the Oxyma template), N-piperidinyl and N-morpholinyl chains. In addition, the cyano oximes, N-hydroxybenzimidoyl cyanide and N-hydroxypicolinimidoyl cyanide were also used in the synthesis of the novel cyano oximino sulfonate derivatives. The structures of the prepared co… Show more
“…Some oxime derivatives have been also examined as useful pharmacophores in a range of therapeutic agents and considered as bioisosteres which provide a series of potent antiviral agents [9][10][11][12][13]. Recently, O-acyl and O-arylsulfonyl derivatives of isatin 3-oximes have been synthesized and their reactivity towards alcohols and amines has been reported [14][15][16]. O-sulfonyl derivatives were reported with better reactivity than their analogous O-acyl derivatives.…”
C 19 H14N 2 O4S, triclinic, P1, a = 5.9059(2) Å, b = 10.1508(5) Å, c = 13.6286(6) Å, α = 88.499(2)°, β = 88.744(2))°, γ = 84.569(2)°, V = 812.93(6) Å 3 , Z = 2, Rgt(F 2 ) = 0.058, wR(F 2 ) = 0.147, T = 100 K.
CCDC no.: 1477481The asymmetric unit of the title crystal structure is shown in the gure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.
Source of material3-(Hydroxyimino)-1-methylindolin-2-one was prepared rst according to the reported method [1] and the spectral
“…Some oxime derivatives have been also examined as useful pharmacophores in a range of therapeutic agents and considered as bioisosteres which provide a series of potent antiviral agents [9][10][11][12][13]. Recently, O-acyl and O-arylsulfonyl derivatives of isatin 3-oximes have been synthesized and their reactivity towards alcohols and amines has been reported [14][15][16]. O-sulfonyl derivatives were reported with better reactivity than their analogous O-acyl derivatives.…”
C 19 H14N 2 O4S, triclinic, P1, a = 5.9059(2) Å, b = 10.1508(5) Å, c = 13.6286(6) Å, α = 88.499(2)°, β = 88.744(2))°, γ = 84.569(2)°, V = 812.93(6) Å 3 , Z = 2, Rgt(F 2 ) = 0.058, wR(F 2 ) = 0.147, T = 100 K.
CCDC no.: 1477481The asymmetric unit of the title crystal structure is shown in the gure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.
Source of material3-(Hydroxyimino)-1-methylindolin-2-one was prepared rst according to the reported method [1] and the spectral
“…The two oximes 8 and 9 were synthesized according to the previously reported method 20 and used for the preparation of the sulfonate esters 11, 14 and 16. 20 2.2a General method for the synthesis of sulfonate esters: The reported method 20 was modified as follows:…”
Section: General Methods For the Synthesis Of Oxyma Derivativementioning
confidence: 99%
“…The analysis showed that these compounds (10)(11)(12)(13)(14)(15) have growth inhibition activity on L929 cells. 20 Herein, we report a modified method for the synthesis of the sulfonate esters using dichloromethanewater (two-phase method) in the presence of sodium carbonate for the scavenging of the HCl. X-ray crystallography was used to determine the structures of the three prepared sulfonate esters.…”
Three oxyma sulfonate esters were prepared using dichloromethane-water (two-phase method) in the presence of sodium carbonate for scavenging HCl. The products were characterized by FT-IR, NMR ( 1 H and 13 C), UV-Vis spectra and elemental analysis. X-ray single crystal diffraction experiments proved the molecular structures of three esters. Their molecular structures were also calculated using DFT/B3LYP method. The optimized structures agreed well with the X-ray structures. Time-dependent density functional theory (TD-DFT) was used to assign the electronic absorption bands observed experimentally. Pyridine derivative showed two bands at shorter λmax compared to the others, both experimentally and theoretically. The NMR chemical shifts were computed for protons and carbons using GIAO method, which correlated well with the experimental data. Natural charges, dipole moments and chemical reactivity of these molecules, as well as their non-linear optical activity, were computed and compared.
“…Nitrogen is one of the most important elements that constitute organisms and plays an important role in life activities of biomolecules. Cyano-oxime compounds and their derivatives have shown tremendous potentials for the development of a variety of biological compounds such as herbicides, drugs, and antibacterial agents (Gerasimchuk et al, 2008;El-Faham et al, 2014). The presence of two important functional groups in a single molecule makes them widely applicable for the synthesis of nitrogenous organic compounds in chemical engineering (Robertson et al, 2005;Aakeröy et al, 2012;Soliman et al, 2017).…”
A simple and efficient method is explored for the synthesis of 2-hydroxyimino-2-phenylacetonitriles (2) and phthalimides (4), by using nitromethane as nitrogen donors. Both reactions are promoted by Cu(II) system with the participation of dioxygen as an oxidant. The scope of the method has been successfully demonstrated with a total of 51 examples. The flexible and diversified characteristics of reactions are introduced in terms of electronic effect, steric effect, position of substituted groups, and intramolecular charge transfer. Experimental studies suggest that the methyl nitrite could be a precursor in the path to the final products. A possible reaction mechanism is proposed, including the Cu(II)/O2-facilitated transformation of nitromethane to methyl nitrite, the base-induced formation of 2-hydroxyimino-2-phenylacetonitriles, and the base-dioxygen-promoted formation of phthalimides.
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