3- Hydroxymethyl-1-naphthol, from

Heating a solution of hexoses in a strong non-oxidising acidic conditions, hydroxy methyl furfural is formed. The hydroxymethyl furfural from hexose is usually oxidized further to other products When phenolic compounds such as resorcinol, a-naphthol or enthrone are added, mixture of coloured compounds are formed. ... 

The connection of adjacent phenolic units by directional bridges may be mentioned as an additional possibility. The C2-symmetrical lactone 102a is obtained in 36% yield from the tetrachloromethylated calix[4]arene tetrapropyl ether by reaction with salicylic acid. The formation of the Cs-symmetrical isomer is not observed in this case, probably since the most nucleophilic phenolate attacks at opposite rings, due to a pinched cone conformation of the tetrapropyl ether.196 In contrast, the similar cyclization with 3-hydroxymethyl-2-naphthol gave mainly the Cs isomer (Cs/C2 = 95/5). However, the C2 isomer 102b could be isolated and has been resolved by enantioselective HPLC (Chiralpak AD, a = 3.17).145... 

THIS pH buffer. A solution is prepared of 1 mol/L tris(hydroxymethyl) aminomethane in 0.5mol/L HCl. This buffer gives a pH of 8.07 when diluted 100-fold in seawater. Contaminating iron is removed from this buffer by addition of 20 //mol/L /V,/V-(l-nitroso-2-naphthol) and passing through a Sep-Pak Cig cartridge. 

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