Stereoregularity of poly(2-vinylpyridine) determined by 1H-NMR and 13C-NMR spectroscopy

1976 ◽  
Vol 14 (6) ◽  
pp. 1475-1484 ◽  
Author(s):  
Kei Matsuzaki ◽  
Taiichi Kanai ◽  
Tetsuyuki Matsubara ◽  
Susumu Matsumoto
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
13C Nmr ◽  
13C Nmr Spectroscopy

scholarly journals Secondary metabolites of three endemic Centaurea L. species

2014 ◽  
Vol 79 (11) ◽  
pp. 1355-1362 ◽  
Author(s):  
Vele Tesevic ◽  
Ivana Aljancic ◽  
Slobodan Milosavljevic ◽  
Vlatka Vajs ◽  
Iris Djordjevic ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Nmr Spectroscopy ◽  
Secondary Metabolites ◽  
Sesquiterpene Lactone ◽  
1H Nmr ◽  
13C Nmr ◽  
1H Nmr Spectroscopy ◽  
13C Nmr Spectroscopy ◽  
Esi Ms ◽  
Aerial Parts

The aerial parts of three endemic Centaurea L. species, namely C. tomorosii Micevski, C. soskae Hayek and C. galicicae Micevski, afforded sesquiterpene lactone cnicin (1) and seven flavonoids: apigenin (2), isokaempferide (3), hispidulin (4), eupatorin (5), cirsimaritin (6), santaflavone (7) and salvigenin (8). The structures of the isolated compounds were determined by UV, 1H NMR and 13C NMR spectroscopy and HR-ESI-MS spectrometry. 1H NMR spectroscopy was used as a method for quantitative analysis of sesquiterpene lactone cnicin.

New Heterocyclic Compounds from 1,2,4-triazoles Class with Potential Cytotoxic Activity

2017 ◽  
Vol 68 (11) ◽  
pp. 2503-2508 ◽  
Author(s):  
Laura Ileana Socea ◽  
Stefania Felicia Barbuceanu ◽  
Bogdan Socea ◽  
Constantin Draghici ◽  
Theodora Venera Apostol ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Cytotoxic Activity ◽  
Spectral Data ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Heterocyclic Compounds ◽  
Cytotoxic Effect ◽  
13C Nmr Spectroscopy ◽  
New Compounds

Acylhydrazinecarbothioamides (2a,b) were synthesized by addition of 2-(5H-dibenzo[a,d][7]annulen-5-yl)acetohydrazide to different isothiocyanates. The new 1,2,4-triazol-3-thioles (3a,b) were synthesized by cyclization of new 2- acylhydrazinecarbothioamides (3a,b) in basic media. Alkylation of 1,2,4-triazole-3-thiols (3a-c) with ethyl bromide gave only S-substituted derivatives (4a-c). The structures of the synthesized compounds have been established on spectral data (IR, 1H-NMR and 13C-NMR spectroscopy) and elemental analysis. The cytotoxic effect of new compounds was evaluated using two alternative models on plant and invertebrate organisms.

scholarly journals Synthesis some 4-substituted 9,10-anthraquinones

2020 ◽  
Vol 8 (1) ◽  
pp. 58-65
Author(s):  
Vasyl Shupeniuk ◽  
Tetyana Taras ◽  
Oksana Sabadakh ◽  
Eugene Luchkevich ◽  
Yurii Kornii
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Coupling Reaction ◽  
13C Nmr Spectroscopy ◽  
Analysis Data ◽  
Elemental Analysis Data ◽  
Ullmann Coupling

New 4-substituted 9,10-anthraquinones (6 compouds) with amino derivations fragments were synthesized through the substitution of the bromaminic acid by amines using the Ullmann coupling reaction. The structures of the synthesized compounds were determined using LC-MS, 1H NMR, 13C NMR spectroscopy, and elemental analysis data.

ChemInform Abstract: 1H NMR and 13C NMR Spectroscopy of Pyrene Dianions

ChemInform ◽  
1988 ◽  
Vol 19 (23) ◽  
Author(s):  
L. RODENBURG ◽  
M. FLOOR ◽  
A. LEFEBER ◽  
J. CORNELISSE ◽  
J. LUGTENBURG
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
13C Nmr ◽  
13C Nmr Spectroscopy

Syntheses and Characterization of Two New 4,4’-Bithiazole d10 Complexes, Structural Characterization of M(DABTZ)2(CH3COO)](ClO4) · 2H2O (M = Zn, Cd)

2005 ◽  
Vol 60 (9) ◽  
pp. 951-954 ◽  
Author(s):  
Jafar Abedini ◽  
Ali Morsali
Keyword(s):  
Nmr Spectroscopy ◽  
1H Nmr ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Structural Characterization ◽  
13C Nmr Spectroscopy ◽  
Acetate Anion ◽  
Aromatic Rings ◽  
Π Stacking Interaction

New zinc(II) and cadmium(II) complexes of the 2,2’-diamino-4,4’-bithiazole (DABTZ) ligand, [M(DABTZ)2(CH3COO)](ClO4), have been synthesized and characterized by elemental analysis, IR, 1H NMR and 13C NMR spectroscopy. The structural characterization of the Cd(DABTZ)2(CH3COO)](ClO4) · 2H2O complex shows the complex to be a monomer and the Cd atom to be coordinated by four nitrogen atoms of the “DABTZ” ligands and two oxygen atoms of the acetate anion. There is an edge-to-edge π-π stacking interaction between the parallel aromatic rings.

scholarly journals 1-Tosyl-6-vinyl-4,5,6,7-tetrahydro-1H-benzo [d] imidazole-2-amine

Molbank ◽  
10.3390/m1262 ◽  
2021 ◽  
Vol 2021 (3) ◽  
pp. M1262
Author(s):  
Fiach B. Meany ◽  
Sarah O’Rourke ◽  
Paul V. Murphy
Keyword(s):  
Natural Products ◽  
Nmr Spectroscopy ◽  
1H Nmr ◽  
13C Nmr ◽  
Title Compound ◽  
Ring Opening ◽  
13C Nmr Spectroscopy ◽  
Amino Alcohols ◽  
Epoxide Ring ◽  
Epoxide Ring Opening

The alkene functionalised 2-aminobenzimidazole ring found in terrazoanthine natural products was synthesized in 3 steps from 1,2-epoxy-4-vinylcyclohexane via epoxide ring opening with toluenesulphonamide yielding 2 regioisomeric, separable amino alcohols. One isomer was oxidized to the corresponding ketone and subsequently condensed with cyanamide to furnish the title compound, which was characterized by 1H-NMR and 13C-NMR spectroscopy.

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