Proton Magnetic Resonance Spectra of Nitronaphthalenes in Dimethylacetamide Solution

1963 ◽  
Vol 16 (6) ◽  
pp. 1108 ◽  
Author(s):  
PR Wells ◽  
PGE Alcorn
Keyword(s):  
Magnetic Resonance ◽  
Nitro Group ◽  
Proximity Effect ◽  
Proton Magnetic Resonance ◽  
Steric Crowding ◽  
Proton Resonances ◽  
The Individual ◽  
Spectral Patterns ◽  
Derivatives Of ◽  
Magnetic Resonance Spectra

Examination of the proton magnetic resonance spectra of some methyl and dimethyl derivatives of 1- and 2-nitronaphthalene has allowed assignments of spectral regions to the various ring protons to be made. The individual proton resonances and overall spectral patterns correspond well with those predicted from studies of the dinitronaphthalenes and dimethylnaphthalenes. Steric crowding in 2-methyl-1-nitronaphthalenes appears to reverse the proximity effect of the nitro group on the peri-hydrogen.

The preparation of 2-Fluoro-5-nitrobenzonitrile and the proton magnetic resonance spectra of some compounds containing the N-(2-Cyano-4-nitrophenyl) group

1967 ◽  
Vol 20 (8) ◽  
pp. 1663 ◽  
Author(s):  
JFK Wilshire
Keyword(s):  
Amino Acids ◽  
Magnetic Resonance ◽  
Nitro Group ◽  
Proton Magnetic Resonance ◽  
Cyano Group ◽  
Aromatic Nucleus ◽  
Heteroaromatic Compounds ◽  
Magnetic Resonance Spectra

2-Fluoro-5-nitrobenzonitrile, an analogue of 1-fluoro-2,4- dinitrobenzene, in which the 2-nitro group has been replaced by a cyano group, has been prepared and made to react with several amines, amino acids, and NH-heteroaromatic compounds. The proton magnetic resonance spectra of some of the resultant N-(2-cyano-4-nitrophenyl) derivatives were compared with the spectra of the corresponding N-(2,4- dinitrophenyl) derivatives and furnish further evidence that the ortho nitro group of the latter derivatives is rotated out of the plane of the aromatic nucleus.

ChemInform Abstract: PROTON MAGNETIC RESONANCE SPECTRA OF ANIONIC Σ-COMPLEXES OF TRINITROBENZENE WITH CYCLOPENTADIENYL AND INDENYL DERIVATIVES OF TIN

1976 ◽  
Vol 7 (50) ◽  
pp. no-no
Author(s):  
YU. A. USTYNYUK ◽  
G. A. ARTAMKINA ◽  
YU. N. LUZIKOV ◽  
YU. K. GRISHIN ◽  
A. A. AZIZOV ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Derivatives Of ◽  
Magnetic Resonance Spectra

The proton magnetic resonance spectra of N-nitroso derivatives of sarcosine, proline and iminodiacetic acid

1971 ◽  
Vol 24 (9) ◽  
pp. 1949 ◽  
Author(s):  
FHC Stewart
Keyword(s):  
Magnetic Resonance ◽  
Long Range ◽  
Proton Magnetic Resonance ◽  
Iminodiacetic Acid ◽  
Conformational Isomerism ◽  
Nitroso Group ◽  
Restricted Rotation ◽  
Derivatives Of ◽  
Shielding Effects ◽  
Magnetic Resonance Spectra

The proton magnetic resonance spectra of various N-nitroso derivatives of sarcosine, L-proline, and iminodiacetic acid, including some protected dipeptides, have been obtained. Magnetic non-equivalence and conformational isomerism arising from restricted rotation of the nitroso group are discussed in relation to the reported behaviour of other nitrosamines. Long-range shielding effects on protons at a considerable distance from the anisotropic nitrosamino centre were readily detected with these compounds.

Imidazo(1,2-a)indole and s-triazolo(2,3-a)indole derivatives by intramolecular cyclization of 1-(o-acetylphenytyl)azoles

1968 ◽  
Vol 46 (15) ◽  
pp. 2629-2631 ◽  
Author(s):  
Misbahul Ain Khan ◽  
J. B. Polya ◽  
Brian M. Lynch
Keyword(s):  
Magnetic Resonance ◽  
Intramolecular Cyclization ◽  
Proton Magnetic Resonance ◽  
Indole Derivatives ◽  
Ring Systems ◽  
Methyl Derivatives ◽  
Derivatives Of ◽  
Magnetic Resonance Spectra

9-Hydroxy-9-methyl derivatives of the ring systems named in the title are formed along with the expected 1-(o-acetylphenyl)azoles in the Ullmann condensations of o-bromoacetophenone with imidazole and with 1,2,4-triazole. The structures of these compounds follow from their characteristic proton magnetic resonance spectra.

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