SOME REACTIONS OF ALIPHATIC AMIDES WITH SULFUR AND SODIUM POLYSULFIDES |
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| Authors: | Kuzhikalail M Abraham Rebecca Schiff |
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| Institution: | EIC Corporation , 55 Chapel Street, Newton, Massachusetts, 02158, U.S.A. |
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| Abstract: | Abstract Some reactions of the aliphatic amides, CH3CONH2, CH3CONHCH3, CH3CON(CH3)2 and CH3CON(C2H5)2 with elemental S and sodium sulfides, Na2S n , n ≥ 1, have been studied. The initial reaction product with elemental sulfur appears to be a substituted polysulfane, CH3COS n NR, formed by the insertion of the sulfur chain into the Csbnd]N bond. This product decomposes on further heating, forming COS as the major gas product. In solutions of Na2S n in the amides, the reactive material appears to be elemental S, present in equilibrium with S n ?2. In the N-dialkyl substituted amides, CH3CON(CH3)2 and CH3CON(C2H5)2, the tetrasulfide is uniquely stabilized by solvent coordination so that solutions of Na2S4 in these amides are stable for long periods of time at 130°C. |
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