Une nouvelle reaction de transposition: acces facile a des thiopyranne thiones a partir de (dimethylamino-2 vinyl)-5 alkylthio-3 dithiole-1,2 yliums |
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| Authors: | M Barreau C Cotrel |
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| Institution: | Rhone-Poulenc Industries Centre de Recherches Nicolas Grillet 13, quai Jules Guesde 94400 Vitry-S/Seine - France |
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| Abstract: | Reduction by potassium borohydride of 5-(2-dimethylaminovinyl) 3-alkylthio 1,2-dithiole yliums yields, 4-alkylthio 2H-thiopyranne 2-thiones, or 2-alkylthio 4H-thiopyranne 4-thiones (depending on the alkyl group); these react with secondary amines to yield 4-amino 2H-thiopyranne 2-thiones. |
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