1H Magnetic Resonance Spectroscopy Of Some Substituted Acetophenones

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Synthesis and biological evaluation of (E)-1-(substituted)-3

magnetic anisotropy effects of the carbonyl group on the vinylic proton, while in (E)-form the resonance should be around 6.50ppm26,27. In our 1H-NMR spectra, only a set of signals around 8.08ppm was appeared, which confirmed our products were only in (Z)-configuration as thermodynamically favored structures.


our earlier formulation of d^-acceptor resonance in heavier halogen substituents 7. R N 0=C y2 Cl 2 a, R=C6H5-b, R=4-CIC6H4-c, R = 4-MeOC6H4-3c R-N CH-CCK a >ci -CH2 4a, R = C6H5 b, R = 4CIC5H4-Fig. 1. Another system of substituted methyl-ketones showed no tendency for cyclization to morpholines under the influence of bases. These are the ketones

Applications of 17O NMR Spectroscopy to Natural Products

of Magetic Resonance in Chemistry was devoted to articles using iH and 13c NMR spectroscopy for structure elucidation of natural products and serves to illustrate the power of this approach. Use of NMR spectroscopy of some of the more difficult to detect nuclei such as oxygen, nitrogen and sulfur is rapidly growing [1-3].

Synthesis and Antibacterial Activity of Novel Hydroxy

nuclear magnetic resonance (1H NMR) and carbon nuclear magnetic resonance (13C NMR) spectra were determined by a Bruker Avance DRX 500 MHz spectrometer and antibacterial activity of some N-hydroxysemicarbazones of diaryl ketones and substituted acetophenones. These derivatives could be considered as bioisoesters of active N-

Styryl 4-Methoxy-1-Naphthyl Ketone

A series of substituted styryl 4-methoxy-1 -naphthyl ketones [(2E)-1-(4-methoxy-1-naphthyl)-3-phenyl- 2-propen-l-ones] were synthesized using focile method of microwave assisted condensation reaction. The yield of chal-cones is more than 90%. They are characterized by their physical constants, micro analysis, infrared (KBi; 4000-400 cm-1) and


(CHN) and spectral analysis like Infrared spectroscopy, Nuclear magnetic resonance spectroscopy and mass spectroscopy. to remove any inorganic materials. It was dried under vacuum over General Procedure The title compounds were prepared in following steps: Synthesis of 1, 3-Diphenyl prop-2-en-1-one derivatives (Chalcone) (3a-3j).

New Synthesis, Structure and Analgesic Properties of Methyl 1

Using nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry and X-ray diffraction analysis it has been proven that in the DMSO/K2CO3 system the reaction of methyl 4-methyl-2,2-dioxo-1H-2 6,1-benzothiazine-3-carboxylate and alkyl halides leads to formation of N-substituted derivatives with good yields regardless of the

Design, synthesis, characterization, and cytotoxicity

Fourier transform infrared spectroscopy attenuated total reflectance and nuclear magnetic resonance (1D and 2D). The cytotoxicity activity of the chalcones and new pyrazoline compounds were investigated against breast cancer cell lines (MCF-7 and MD-MB-231) and normal breast cell lines (MCF-10A). The results show that only compound

An expedient, one-pot, stepwise sequential approach for the

A Perkin Elmer fourier transform infrared spectroscopy (FTIR) (4000-400 cm−1) instrument was used to record the IR spectra as KBr pellets. 1H and 13C NMR spectra were obtained at 500 and 125 MHz (BRUKER AV-ΙΙΙ, fourier-transform nuclear magnetic resonance (FT-NMR) spec-trometer) using CDCl 3 as the solvent and tetramethylsilane

Greener synthesis and Hammett spectral Linearity s of some 1

of some 1-{[3-(furan-2-yl)-5-phenyl-4,5-dihydro-1,2-oxazol-4-yl]methyl}-4-methyl piperazines G. Thirunarayanan1,*, M. Rajarajan2, K. G. Sekar3, V. Sathiyendiran4 1Department of Chemistry, Annamalai University, Annamalainagar - 608 002, India 2Department of Chemistry, Thiruvalluvar Arts and Science College, Kurinjipadi - 607 302, India