- The Synthesis of 3-Aryl-5-dialkylamino-1,4,2-dithiazol-1-ium Salts
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N-(Dialkylthiocarbamoylthio)arenecarboxamides, prepared by acylation of the corresponding S-dialkylthiocarbamoyl-substituted sulfenamides, cyclized with dehydration in a strong acidic media to form a number of 3-aryl-5-dialkylamino-1,4,2-dithiazol-1-ium s
- Shibuya, Isao,Yonemoto, Katsumi
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- Preparation of N-(Substituted formyl) dialkylamino(thioxo)methanesulfenamides
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N-(Substituted formyl)dialkylamino(thioxo)methanesulfenamides (R2NCSSNHCOR', 2), anti-foggants for silver halide photographic materials as well as potential precursors for 1,4,2-dithiazolium salts, were prepared in good yields in two ''one-pot'' procedures.Various amide-type compounds (R'CONH2, 1) were treated successively with NaH and I2 and then condensed with dialkylditiocarbamates (Method A); or 1 were reacted with tetraalkylthiuram disulfides after treatment with NaH (Method B).These methods allowed a wide variation of substituents R' in 2: R' = H, dialkylamino, alkoxy, aryl, alkyl, and heterocyclic substituent.
- Yonemoto, Katsumi,Shibuya, Isao,Yasumoto, Masahiko,Taguchi, Yoichi,Tsuchiya, Tohru
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p. 3732 - 3734
(2007/10/02)
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