Formation of 2-hydroxy-7-methoxy-5-methyl-1-naphthoic acid: The naphthoate portion of neocarzinostatin

10.1039/sp179 ◽  
2001 ◽  
Author(s):  
lisa frost
Keyword(s):  
Naphthoic Acid

Pulse polarographic study of the behaviour of some o,o'-dihydroxyazo-compounds

1989 ◽  
Vol 54 (5) ◽  
pp. 1219-1226 ◽  
Author(s):  
Enric Casassas ◽  
Miquel Esteban ◽  
Santiago Alier
Keyword(s):  
Carboxylic Acid ◽  
Reaction Mechanisms ◽  
Sulphonic Acid ◽  
Base Catalysis ◽  
Polarographic Study ◽  
Acid Base ◽  
Eriochrome Black T ◽  
Naphthoic Acid ◽  
Calcon Carboxylic Acid

The reduction of several o,o'-dihydroxyazo-compounds is studied by means of pulse polarographic techniques (DPP, NPP and RPP). The compounds studied are the following: 2-(2'-hydroxyphenylazo)-phenol (o,o'-dihydroxyazobenzene), 1-(2'-hydroxy-1'-naphthylazo)-2-naphthol-4-sulphonic acid (calcon or Eriochrome Blue Black R), 1-(2'-hydroxy-4'-sulpho-1'-naphthylazo)-2-hydroxy-3-naphthoic acid (calcon carboxylic acid), and 1-(1'-hydroxy-2'-naphthylazo)-6-nitro-2-naphthol-4-sulphonic acid (Eriochrome Black T). Correlations between Ip and Epand experimental variables (pH, T, conc.) and instrumental parameters (dropping time, t, and pulse magnitude, ΔE) are established. Reaction mechanisms formerly proposed are discussed on the basis of the new obtained results, and the ranges are defined where adsorption and/or acid-base catalysis are operative.

The structure of (1RS,7SR,8aRS)-4,7-dimethyl-1,2,3,5,6,7,8,8a-octahydro-1-naphthoic acid, C13H20O2

1984 ◽  
Vol 40 (11) ◽  
pp. 1914-1915
Author(s):  
N. N. Dhaneshwar ◽  
S. S. Tavale ◽  
K. R. Acharya ◽  
T. N. Guru Row
Keyword(s):  
Naphthoic Acid

Synthesis of 5,8-dimethoxy-1-naphthoic acid and 1,4-dimethoxy-7,12-dimethylbenz[a]anthracene

1986 ◽  
Vol 51 (10) ◽  
pp. 1921-1922 ◽  
Author(s):  
Melvin S. Newman ◽  
Vinod K. Khanna
Keyword(s):  
Naphthoic Acid
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