Effect of substituents on the photochemical reactions of derivatives of o-naphthodiazoquinone compounds

1980 ◽  
Vol 32 (1) ◽  
pp. 64-67
Author(s):  
S. P. Molodnyakov ◽  
Yu. I. Fedorov ◽  
V. A. Kuznetsov ◽  
A. N. Egorochkin ◽  
G. A. Voskoboinik ◽  
...  
Keyword(s):  
Photochemical Reactions ◽  
Effect Of Substituents ◽  
Derivatives Of

Effect of Substituents on Photochemical and Biological Properties of 13,15-N-Cycloimide Derivatives of Chlorin p6

2005 ◽  
Vol 31 (5) ◽  
pp. 482-494 ◽  
Author(s):  
A. I. Nazarova ◽  
A. V. Feofanov ◽  
T. A. Karmakova ◽  
G. V. Sharonov ◽  
A. D. Plyutinskaya ◽  
...  
Keyword(s):  
Biological Properties ◽  
Effect Of Substituents ◽  
Derivatives Of ◽  
Chlorin P6

ChemInform Abstract: Photochemical Reactions of Some Mono- and Diketo Derivatives of Adamantane in Different Solvents

ChemInform ◽  
2010 ◽  
Vol 27 (8) ◽  
pp. no-no
Author(s):  
S. V. RYKOV ◽  
E. D. SKAKOVSKII ◽  
V. D. OPPENGEIM ◽  
E. I. BAGRII ◽  
M. P. FILATOVA
Keyword(s):  
Photochemical Reactions ◽  
Derivatives Of

Photochemical reactions of azo compounds. X. Photochemical properties of azobenzene-2-carboxylic acids

1967 ◽  
Vol 20 (5) ◽  
pp. 929 ◽  
Author(s):  
CP Joshua ◽  
GE Lewis
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
Intramolecular Hydrogen Bonding ◽  
Photochemical Reactions ◽  
Azo Compounds ◽  
Neutral Compounds ◽  
Methyl Derivatives ◽  
Intramolecular Hydrogen ◽  
Derivatives Of

Two chloro and two methyl derivatives of azobenzene-2-carboxylic acid have been found to yield the corresponding derivatives of benzo[c]cinnoline-4- carboxylic acid in good yields when irradiated in 98% sulphuric acid. The question of intramolecular hydrogen bonding in relation to the properties of azobenzene-2-carboxylic acids is discussed. Infrared absorption spectra of the neutral compounds have provided confirmation of internal hydrogen bonding. Attempts to prepare the cis isomers of these azo compounds have been unsuccessful.

Some Derivatives of 1-Benzazepine. Part II

1974 ◽  
Vol 52 (4) ◽  
pp. 610-615 ◽  
Author(s):  
G. R. Birchall ◽  
A. H. Rees
Keyword(s):  
Carboxylic Acids ◽  
Ring Expansion ◽  
Hydrazoic Acid ◽  
Ring Contraction ◽  
Effect Of Substituents ◽  
Ring Expansion Reaction ◽  
Derivatives Of

We have investigated the ring expansion of some substituted 1,4-naphthoquinones by hydrazoic acid to yield new 1-benzazepine derivatives of the "azatropolone" type. Ring contraction of those products, which are 2,5-dihydro-3-hydroxy-2,5-dioxo-1-benzazepines, gives 4-quinolone-2-carboxylic acids. Some of the reactions of the new benzazepine system were investigated. Attempts to prepare substituted derivatives suitable for making 1-benzazatrop-5-one were not successful.The effect of substituents on the ring expansion reaction is discussed and an anomalous ring expansion to a 2,5-dihydro-4-hydroxy-2,5-dioxo-1-benzazepine is described and explained mechanistically.

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