1H NMR (CDCl3) δ (ppm): 6.95 (g, broad, 0.850H), 2.76 (f1, broad, 1.556H), 2.58 (f2, broad, 0.421H), 1.66 (e, broad, 1.962H), 1.30 (b, c, d, broad, 5.971H), 0.87 (a, broad, 3.000H). Reactions NBS can be used in many organic reactions. For example, allylic ...
NMR and UV spectraFukui functionNBO analysisA three-component, NBS-promoted synthesis of 伪,尾-unsaturated isoxazol-5(4 H )-ones by reaction of aromatic aryl or hetero-aryl aldehydes, hydroxylamine hydrochloride, and 1,3-dicarbonyl compounds (ethyl acetoacetate or ethyl 4-chloroacetoacetate), under...
Proton nuclear magnetic resonance (1H NMR) spectra were recorded on a Bruker 600 MHz spectrometer. Chemical shifts for protons are reported in parts per million downfield from tetramethylsilane and are referenced to residual protium in the NMR solvent (CHCl3 = δ 7.28). Carbon ...
ENGINEERINGV01.22.No.2Apr.2012文章编号:1004-7964(2012)02-0017-03N一溴代丁二酰亚胺与环戊烯的仪一溴代反应张宝芹,梁鹏,丁克毅+(西南民族大学化学与环境保护工程学院,四川成都610041)摘要:在进行环戊烯烯丙位一溴代和二溴代反应的实验时,意外合成了3,4,5一三溴环戊烯,采用1HNMR和EI—MS对其结构进行了...
NMR and UV spectraFukui functionNBO analysisA three-component, NBS-promoted synthesis of 伪,尾-unsaturated isoxazol-5(4 H )-ones by reaction of aromatic aryl or hetero-aryl aldehydes, hydroxylamine hydrochloride, and 1,3-dicarbonyl compounds (ethyl acetoacetate or ethyl 4-chloroacetoacetate), under...
These newly synthesized complexes have been characterized by physicochemical and spectroscopic techniques (MW, IR, and NMR [ 1 H and 31 P]). The computational semi-empirical calculations (MOPAC6P/c) have also been studied for these complexes. On the basis of above studies, the formation of P...
The main oxidation products were identified by IR and 鹿H NMR spectral analyses. The observed results have been explained by plausible mechanisms and the relative rate laws have been deduced.MohanaDepartment of Studies in ChemistryK. N.Department of Studies in ChemistryBhandarkar...
The main oxidation products were identified by IR and 1 H NMR spectral analyses. The observed results have been explained by plausible mechanisms and the relative rate laws have been deduced.doi:10.1007/BF03245835K. N. MohanaP. M. Ramdas Bhandarkar...
(4-methylpiperazin-1-yl)-5,7-dioxo-2,3,6,7-tetrahydro-5H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid and succinimide were identified by Fourier transform infrared spectroscopy (FTIR), Liquid chromatography-mass spectrometry (LC-MS), Nuclear magnetic resonance (NMR) and Thin-layer ...
C-13 NMR spectroscopy of brominated products and GLC-MS analysis of their hydrolyzates showed that the bromine substitution took place regioselectively at C-6 of the chitin repeating units. Polymer chain scission occurred to some extent during the bromination, more extensively at higher temperatures ...