Dihydrodihydroxy compounds are important intermediates in the metabolic pathways of aromatic hydrocarbons, giving rise to many of the metabolites observed in the urine when the parent hydrocarbons are given to animals. Thus, for example, when tran8-1,2-dihydro-1,2-dihydroxynaphthalene is given to rats it is excreted partly unchanged in conjugation with glucuronic acid, partly as 1-naphthol in c...

Chiral nonracemic aminobenzylnaphthols were obtained by a Betti multi-component reaction between 2-naphthol, aryl aldehydes and enantiopure arylethylamine. Moreover, some new aminobenzylnaphthols were synthesized by a similar reaction between 2-naphthol, aryl aldehydes and prolinol. These aminobenzylnaphthols, synthesized from different components and thus having different structural features, ...

A series of ketohydrazone dyes has been synthesised from 4-morpholino-2-naphthol and ortho -substituted anilines by conventional diazotisation coupling chemistry. Whilst the new, dull orange-red, exhibit only a minor variation absorption maxima across range substituents, they are hyperchromic relative to Sudan 1 their none analogue. Protonation selected dye examples results in bathochromic shif...

Aromatic amines are oxidized in animal tissues to oand p-aminophenols, which are rapidly conjugated to give either sulphates or glucosiduronates. Some of the carcinogenic aromatic amines appear to produce their biological effects after conversion into o-aminophenols. 2-Naphthylamine, for example, which produces bladder cancer, is oxidized to 2-amino-6-naphthol and 2-amino-inaphthol by liver sli...

This study investigates the removal of naphthol-AS dye from aqueous solutions by SDS-modified adsorbents under various experimental conditions. Results imply that adsorption process was highly pH-dependent and optimum pH for occurred at 6.0, having maximum efficiency 91 %. Adsorption Naphthol-AS on adsorbent fitted better into second order kinetic model capacity found to be 4.803mg g−1. Equilib...

The asymmetric unit of the title compound, C(28)H(20)N(2)O(2)·0.5C(2)H(5)OH, contains two independent mol-ecules of 1,1'-[o-phenyl-enebis(nitrilo-methyl-idyne)]di-2-naphthol, denoted A and B, and one ethanol solvent mol-ecule. The hydr-oxy groups are involved in intra-molecular O-H⋯N hydrogen bonds influencing the mol-ecular conformations, which are slightly different in mol-ecules A and B, whe...

The title compound, C(26)H(25)NO, was obtained via a one-pot synthesis from the reaction of 2-naphthol, 1-(p-tol-yl)ethyl-amine, p-toluene-sulfonic acid and benzaldehyde. There are three mol-ecules per asymmetric unit, all having similar conformations. There are intra-molecular O-H⋯N and C-H⋯O hydrogen bonds, with only van der Waals forces found between mol-ecules.

Chlorination of the di-fm-butylation product of 2-naphthol leads to 3,6-di-rm -butyl-l,l-dichloro-l,2-dihydronaphthalen-2-one (4a) instead of l,6-di-rm -butyl-l,3-dichloro-l,2-dihydronaphthalen-2-one (2) as reported [2], The structural proof was mainly offered by 13C NMR spectroscopy. The influence of annelation and chlorine substitution in 1,2-dihydronaphthalen2-ones on <513c=0 is discussed, w...