Aliphatic fluoro nitro compounds Communication 5. Proton magnetic resonance spectra and ionization constants of polyfluoronitroalkanes

1966 ◽  
Vol 15 (6) ◽  
pp. 1013-1015 ◽  
Author(s):  
I. L. Knunyants ◽  
L. S. German ◽  
I. N. Rozhkov
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Nitro Compounds ◽  
Ionization Constants ◽  
Magnetic Resonance Spectra

Aza-analogues of pteridine. III. Some monomethoxy-1,2,4,6,8-pentaazanaphthalenes and related compounds

1971 ◽  
Vol 24 (3) ◽  
pp. 633 ◽  
Author(s):  
DJ Brown ◽  
T Sugimoto
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Triethyl Orthoformate ◽  
Ionization Constants ◽  
Reductive Cyclization ◽  
Ultraviolet Spectra ◽  
Chloro Derivative ◽  
Related Compounds ◽  
Magnetic Resonance Spectra

4-Hydrazino-2-methoxy-6-methyl-5-nitropyrimidine reacted with triethyl orthoformate to give the ethoxymethylenehydrazino analogue or 4-methoxy-6-methyl-7-nitro-1,2,3a,5-tetraazaindene according to conditions. The first of these products was converted by reductive cyclization and subsequent dehydrogenation into 7-methoxy-5-methyl- 1,2,4,6,8-pentaazanaphthalene. Attempts to hydrolyse this and related compounds to the corresponding 7-hydroxypentaazanaphthalenes failed and direct approaches via appropriate 2-hydroxypyrimidines gave only 4- hydroxy-7-nitrotetraazaindenes. ��� 5-Alkoxypentaazanaphthalenes were prepared via 1,2-dihydropentaaza- naphthalene or its 5-chloro derivative. Nucleophilic displacements were used to make the 5-hydroxy, 5-methylthio, 5-diethylamino, and other analogues from 5-methoxy-3-methylpentaazanaphthalene. ��� The ionization constants, ultraviolet spectra, and proton magnetic resonance spectra of members of both bicyclic series are tabulated and discussed.

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2-Fluoro-5-nitrobenzonitrile, an analogue of 1-fluoro-2,4- dinitrobenzene, in which the 2-nitro group has been replaced by a cyano group, has been prepared and made to react with several amines, amino acids, and NH-heteroaromatic compounds.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.

scholarly journals Proton Magnetic Resonance Spectra of Porcine and Bovine Insulin and of the A and B Chain of Bovine Insulin

1967 ◽  
Vol 242 (11) ◽  
pp. 2637-2645
Author(s):  
Børge Bak ◽  
Erik Jonas Pedersen ◽  
F. Sundby
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Bovine Insulin ◽  
Magnetic Resonance Spectra

Investigation and Identification of the Bromination Products of Dimethoxyamphetamines

1976 ◽  
Vol 59 (5) ◽  
pp. 1162-1169
Author(s):  
Keith Bailey ◽  
Denise R Gagné ◽  
Richard K Pike
Keyword(s):  
Magnetic Resonance ◽  
Qualitative Analysis ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Infrared Spectra ◽  
Proton Magnetic Resonance ◽  
Positive Identification ◽  
Aromatic Bromination ◽  
Layer Chromatography ◽  
Magnetic Resonance Spectra

Abstract The qualitative analysis of the aromatic bromination products of the 6 isomeric dimethoxyamphetamines and their hydrochloride or hydrobromide salts is described. Their ultraviolet, mass, and proton magnetic resonance spectra are not sufficiently different for distinction but infrared spectra allow a positive identification to be made and reference spectra are provided for the bromination products of 2,4-, 2,5-, 2,6-, 4,5-, and 3,5-dimethoxyamphetamines. The application of gas-liquid and thin layer chromatography for the analysis of these products is discussed. The bromination of 2,3-dimethoxyamphetamine consistently gave mixtures which could not be separated satisfactorily; spectra are included for completeness of the comparison of products.

Metal complexing properties and proton magnetic resonance spectra of 5-halo-8-quinolinols

1969 ◽  
Vol 41 (8) ◽  
pp. 1003-1008 ◽  
Author(s):  
R. G. Beimer ◽  
Quintus. Fernando
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Complexing Properties ◽  
Magnetic Resonance Spectra

Proton magnetic resonance spectra of ethylene episulphone

1972 ◽  
Vol 4 (3) ◽  
pp. 441-442 ◽  
Author(s):  
Masako Ueyama ◽  
Kazuo Tori ◽  
Masaru Fukuyama
Keyword(s):  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Magnetic Resonance Spectra
Sign in / Sign up

Export Citation Format

Share Document