SYNTHESIS AND TAUTOMERISM OF P-TERT-BUTYLPHENYLTHIODERIVATIVES OF N-ARYL-5-HYDROXY-1,4-NAPHTHOQUINONE-4-IMINES

The reaction of the N-aryl-5-hydroxy-1,4-naphtoquinone-4-imines with p -tert-butyl-thiophenol gives the 2-mono-, 2,6- and 2,8-di- and 2,8-di- and 2,6,8-threearylthiosubstituted compounds. The vis spectra of p-te rt-butylphenylthio)-1,4-naphthoquinone-4-imine indicated that title co mpound existed in solvents as equilibrium mixture of para- and ana-qui noid tautomers. Latter tautomer is favored in polar solvent.