Flavin-6-carboxylic acids as novel and simple flavoenzyme models. Nonenzymatic stabilization of the flavin semiquinone radical and the 4a-hydroperoxyflavin by intramolecular hydrogen bonding

1992 ◽  
Vol 114 (17) ◽  
pp. 6613-6620 ◽  
Author(s):  
Taishin Akiyama ◽  
Fusae Simeno ◽  
Morio Murakami ◽  
Fumio Yoneda
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acids ◽  
Intramolecular Hydrogen Bonding ◽  
Semiquinone Radical ◽  
Intramolecular Hydrogen

ChemInform Abstract: INTRAMOLECULAR HYDROGEN BONDING AND PHOTOREACTIVITY OF AZOBENZENE-O-CARBOXYLIC ACIDS

1975 ◽  
Vol 6 (26) ◽  
pp. no-no
Author(s):  
C. P. JOSHUA ◽  
V. N. RAJASEKHARAN PILLAI ◽  
P. K. RAMDAS
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acids ◽  
Intramolecular Hydrogen Bonding ◽  
Intramolecular Hydrogen

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.

scholarly journals Intramolecular Hydrogen Bonding in α-Keto- and α-Alkoxy-carboxylic Acids

1960 ◽  
Vol 33 (1) ◽  
pp. 119-120 ◽  
Author(s):  
Michinori Oki ◽  
Minoru Hirota
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acids ◽  
Intramolecular Hydrogen Bonding ◽  
Intramolecular Hydrogen

Infrared studies of terpenoid compounds. Part IV. Correlation of acidity and intramolecular hydrogen bonding for γ-hydroxy carboxylic acids

1967 ◽  
Vol 0 (0) ◽  
pp. 211-215 ◽  
Author(s):  
W. S. Bennet ◽  
G. Eglinton ◽  
J. W. B. Fulke ◽  
R. McCrindle ◽  
K. Hirao ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acids ◽  
Intramolecular Hydrogen Bonding ◽  
Infrared Studies ◽  
Hydroxy Carboxylic Acids ◽  
Intramolecular Hydrogen
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