2-Hydroxy-l- 3- naphthoic acid

Groups of Class 1, when present in the 2 position, direct partly to the 1 position (in direct relation to the strength of their orienting influence), and partly to positions in the other ring, especially the 8 position, then the 6 position. Sulfonation of j3-naphthylamine gives a mixture of all four heteronuclear monosulfonic acids. The 3 position is seldom entered, and then only if the other ring bears at least one substituent. The reaction of carbon dioxide with sodium j3-naphtholate is an exception to this rule. In this case 2-hydroxy-l-naphthoic acid is formed at lower temperatures, but at higher temperatures the product is 2-hydroxy-3-naphthoic acid. 

Hydroxy-l-naphthoic acid does not show anomalous fluorescence shifts, nor does 2-hydroxy-l-naphthoic acid. 

The process has also been used to attach photosensitizers to silica.54 The product in Structure 5.16 was made by treating aminopropylsilica with 2-hydroxy-l-naphthoic acid. It was more effective in the photochemical dechlorination of polychlorinated biphenyls than a homogeneous... 

Hydroxy-l-naphthoic acid 1-Naphthoic acid 3- Hydroxy-2-naphthoic acid 3- Methoxy-2-naphthoic acid 6-Ethoxy-2-naphthoic acid 4- Hydroxybenzoic acid 1- Hydroxy-2-naphthoic acid 2- Naphthoic acid 6-Hydroxy-2-naphthoic acid 6-Methoxy-2-naphthoic acid 6-Propoxy-2-naphthoic acid 2,6-Naphthalene dicarboxylic acid... 

Hydroxy.l-naphthoic Acid (2-Naphthol 1-carboxylic acid)... 

Hexadecyl 3-hydroxy-2-naphthoate 5763 Hydrosorbic acid 5869 2-Hydroxy-l-naphthoic acid 6113... 

Hydroxy-2-Naphthalenecarboxylic Acid. l-Hydroxy-2-naphthoic acid is made similarly to the isomer (2-hydroxy-1-naphthoic acid) by reaction of dry sodium 1-naphthalenolate with CO2 in an autoclave at ca 125°C. It has been used in making triphenylmethane dyes and metalli able a2o dyes. Alkylamides and arylamides of l-hydroxy-2-naphthalenecarboxyhc acid are cyan couplers, ie, components used in indoaniline dye formation in color films (see Color PHOTOGRAPHY). 

Anthracene Beijerinckia sp., Mycobacterium sp., Pseudomonas putida, Pseudomonas paucimobilis, Pseudomonas fluorescens, Pseudomonas cepacia, Rbodococcus sp., Flavobacterium sp,Arthrobacter sp. Anthracene r/r-l,2-dihydrtxlioI, 1.2- dihydroxyanchracene, c/f-4-(2-hydroxynaphth-3-yl)-2-oxobut-3-enoic acid, 2-hydroxy-3-naphchaldehyde, 2-hydroxy-3 naphthoic acid, 2.3- dihydroxynaphchalene, salicylic acid, catechol. (Jolla et al. (1959), Akhtar et al. (1975), Jerina et al, (1976), Evans et al. (1965), Ellis et al. (1991), Wcissenfels et al. (1990), Foght Westlake (1988), Walter et al. (1991), Mueller et al. (1990b), Savino Sc Lollini (1977), Menn et al. (1993). 

Kobayashi, N. and Ando, H. (1988c). New monoazo lake dye —comprises barium salt of l-(4-methyl-2-sulphonylphenyl azo)2-hydroxy-3-naphthoic acid. Dainippon Inc. Patent JP63-225 668 Chem. Abstr, 110, 116665. [261t]... 

DSC has been used to measure T on a variety of polymers including naphthalate copolymers [111,112], polyethylene terephthalate-5-nitrosophthalic acid copolymers [113], propene-pentene copolymers [114], 4-hydroxy benzoic acid-2-hydroxy-6-naphthoic acid copolymers [115], fluorinated perfluorocyclo butylenes [116], PET [117], polythioether ether ketones [14,104], polyvanillylidiene, alkyl/aryl phosphate esters [118], poly(L-lactic acid-poly(e-caprolactone) [119], benzylated waste pulp-L-lactic acid copolymers [120], PET - poly-1,4 butylene succinate [121], polyarylate-polytrimethylene terephthalate [122], polyimines [77], PVOH [123, 124], various Nylons [125]. 

Naphtho[l, 2-c]furazans electrophilic reactions, 6, 410 synthesis, 6, 418 Naphtho[l, 2-c]furoxans eleetrophilic reactions, 6, 410 3-Naphthoic acid, 2-hydroxy-l-(2-thiazolylazo)-analytical uses, 6, 328 Naphtho[ 1,2-h]imidazoles oxidation, 5, 405... 

TAHN — see 3-Naphthoic acid, 2-hydroxy-l-(2-thiazolylazo)-Talisomicin... 

Patton and Reeder s indicator. The indicator is 2-hydroxy-l-(2-hydroxy-4-sulpho-l-naphthylazo)-3-naphthoic acid the name may be abbreviated to HHSNNA. Its main use is in the direct titration of calcium, particularly in the presence of magnesium. A sharp colour change from wine red to pure blue is obtained when calcium ions are titrated with EDTA at pH values between 12... 

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