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From isothiazoles

General Synthetic Methods for Thiazole and Thiazolium Salts 3. Thiazoles from Isothiazoles... [Pg.310]

Cephalosporin 5-oxides and penicillin 5-oxides (221) can be converted into isothiazol-3-ones (222) by the action of bases. These reactions proceed via an intermediate azetidinonesulfenic acid (223 Scheme 37) (77SST(4)339). Attempts to prepare /3-lactam compounds from isothiazoles have, as yet, been unsuccessful (81X2181). [Pg.172]

Acetylisothiazoles have also been obtained from 5-cyanoisothiazoles and methylmagnesium iodide and by hydrolysis of j8-ketoesters derived from isothiazole-5-carboxylic esters.70... [Pg.31]

The quaternary salts 75m,76h and 104a-d were formed by oxidative elimination of a carbonyl oxygen with POCI3 from isothiazol-3(2//)-one 101 (75m (X — Cl),... [Pg.235]

Hydrogen chloride Thiazole from isothiazole ring... [Pg.198]

See other pages where From isothiazoles is mentioned: [Pg.685]    [Pg.685]    [Pg.37]    [Pg.783]    [Pg.807]    [Pg.163]    [Pg.311]    [Pg.685]    [Pg.37]    [Pg.200]    [Pg.570]    [Pg.602]    [Pg.249]    [Pg.783]    [Pg.807]    [Pg.685]    [Pg.429]    [Pg.150]    [Pg.43]   
See also in sourсe #XX -- [ Pg.397 ]



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Dithiolium salts, isothiazoles from

Iminothioamides, isothiazoles from

Isothiazole

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Isothiazoles from bicyclic systems

Isothiazoles from nitrile sulfides

Isothiazoles, 4-amino- from

Isothiazoles, acetyl catalytic preparation from olefins

Olefins, isothiazoles from

Thiazoles from Isothiazoles

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