A-4-thiazoline-2-thione anion

Recently, Hoff and Blok report the reductive ring opening of 4-methyl-A-4-thiazoline-2-thione anion (80) (Scheme 39) (204) when treated with two equivalents of sodium in liquid amonia. Treatment of the prop-enethiolate (83) by 4N aqueous HCl affords 4-methylthiazole. The... [Pg.397]

Alkyl halides, reaction with, A-4-thiazoline-2-thiones anion, 392, 396 4-Alkylidene-A-2-thiazoline-5-one, 427 Friedel-Crafts reaction on, 428 Grignard reaction on, 429... [Pg.288]

A-2-thiazoline-4-ones, 425 Aryl halides, with 2-hydrazinothiazples, 101 A-4-thiazoline-2-thione anion, 396 Aryl nitroso, reaction with, A-2-thiazoline-4-one, 425... [Pg.290]

Since the exocyclic sulfur is more reactive in the ambident anion than in A-4-thiazoline-2-thione. greater nucleophilic reactivity is to be expected. Thus a large variety of thioethers were prepared in good yields starting from alkylhalides (e.g.. Scheme 38 (54, 91, 111, 166-179). lactones (54, 160), aryl halides (54, 152. 180, 181), acyl chlorides (54. 149, 182-184), halothiazoles (54, 185-190), a-haloesters (149. 152. 177. 191-194), cyanuric chloride (151). N.N-dimethylthiocarbamoyl chloride (151, 152, 195. 196), /3-chloroethyl ester of acrylic acid (197). 3-dimethylaminoethyl chloride (152). 1.4-dichloro-2-butyne (152), 1,4-dichloro-2-butene (152). and 2-chloro-propionitrile (152). A general... [Pg.205]

Chlorophenol. hydrogen bonding, with A-4-thiazoline-2-thione. 377 Chloroplatinate anion, 121... [Pg.291]

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