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3- Mercapto-2 -pyridone

The first synthesis of 3-mercapto-2(l//)-pyridone has been achieved starting from the thiazolopyridine 44 <96JOC(61)662>. [Pg.230]

Dichloro-1,4-naphthoquinone and 3-methyl-l-phenylpyrazolone gave 400, and the tetracyclic quinone 401 was obtained from l,2-dimethyl-4-hydroxy-6-pyridone (47CB47). Cyclization of 6-acetylamino-7-chloroquin-oline-5,8-dione in the presence of acetic anhydride yielded the oxazolo derivative 402, and from the 7-mercapto analog the thiazole quinone 403 was... [Pg.119]

A second excellent method of introducing a mercapto substituent consists of treating 6-methyl-2-pyridone (X-110) with P2SS. Oxidation with concentrated... [Pg.278]

The sodium salt of diethyl acetonedicarboxylate reacts with aryl isocyanates to give 1-aryl-4,6-dihydroxy-2-pyridones (XU-104)and with phenyl isothiocyanate to give 3-carbethoxy4-hydroxy-2-mercapto-l-phenyl-6-pyridone, Th e compound formed on treatment of XI-104 (R = H) with acetic anhydride has been proposed to be 3,5-diacetyl-4,6-dihydroxy-l-phenyl-2-pyridone. Characterization was based on the infrared spectrum, ... [Pg.619]

Pyridinols and pyridones and phosphorus pentasulfide give predictable products. 4-Pyridinol and phosphorus pentasulfide in pyridine give 4-pyridine-thione, while 2,6-di-f-butyl-4-pyridone gives bis(4-(2,6-di-r-butylpyridinyl)] sulfide. . /V-Alkyl-3,5-dibromo-2,6-dimethyl- and iV-alkyl-3 -dibromo-2,6-di-phenyl-4-pyridone are converted to the corresponding 4-pyridinethiones. Ammonium salts of 4-alkyI-3,5-dicyano-6-hydroxy-2-pyridones and phosphorus pentasulfide in xylene and pyridine form pyridinium salts of the corresponding 6-mercapto-2-pyridinethiones(XII-630). ... [Pg.793]

Fluoro-2-pyridone is readily prepared by reaction of 5% fluorine in nitrogen and 2-trimethylsiloxypyridine in trichloro-fluoromethane at -78°C the pyridone is a selective fluorinating reagent. 5 The novel 3-substituted pyridine (4-3) is formed when 2,6-dimethoxypyridine (42) is treated with sulphene (CH2=S02)> Treatment of 3-mercapto-2-pyridinethione with triethylamine yields the 1, 6-diazathianthrene (44). [Pg.308]


See other pages where 3- Mercapto-2 -pyridone is mentioned: [Pg.341]    [Pg.62]    [Pg.294]    [Pg.240]    [Pg.341]   
See also in sourсe #XX -- [ Pg.230 ]




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Mercapto

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