- A new method for the synthesis of N,N′-thiobisamines
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Reaction of secondary amines (morpholine and piperidine) with sulfur and iodine afforded N,N′-thiobisamines in good yields.
- Dudin
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p. 1796 - 1797
(2007/10/03)
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- REACTION OF N-HALOGENOIMIDES WITH SULFUR. THIODIIMIDES
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The reaction of N-halogenoimides with sulfur leads to the production of thiodiimides.The latter are active sulfur-transferring reagents.
- Borovikova, G.S.,Levchenko, E.S.,Kaminskaya, E.I.
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- DERIVATIVES OF SULFOXYLIC DIAMIDE
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N,N'-Disubstituted sulfur diimides are reduced by the action of thiophenols to N,N'-disubstituted sulfoxylic diamides R1NHSNHR2.Compounds where R1 = R2 = SO2Ar, COPh enter readily into reaction both with retention and with cleavage of the S-N bond.In reaction with secondary amines and CH acids they are "carriers of sulfur." 2,5-Diaroyl-1,2,5-thiadiazolidine-3,4-diones are formed by the successive action of trimethylchlorosilane and oxalyl chloride on the compounds where R1 = R2 = COPh, COC6H4Cl-p.
- Pel'kis, N. P.,Levchenko, E. S.
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p. 1963 - 1967
(2007/10/02)
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- Use of Piperidine-1-sulphenyl Chloride as a Sulphur-transfer Reagent in Reactions with Diamines: The Preparation of Sulphur-Nitrogen Heterocycles
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The use of piperidine-1-sulphenyl chloride (3) as a sulphur-transfer reagent in reactions with diamines is described.The reactions of (3) with o-phenylenediamine yielded the dihydro-2,1,3-benzothiadiazole (6) and benzothiadiazole (7).Oxidation of (6) with m-chloroperoxybenzoic acid yielded (7).The reactions of (3) with 1,8-diaminonaphthalene and 1,4,5,8-tetra-aminonaphthalene yielded the 1,2,6-thiadiazine derivatives (14) and (16); possible mechanisms are discussed. 1,2-Diamino-N,N'-dimethylethane and (3) yielded the tetrahydrothiadiazole (17), whereas 1,3-diaminopropane and (3) afforded the novel N-S-N chain compound (19).The reactions of morpholine-1-sulphenyl chloride (4) with aromatic diamines gave the same products in low yields.
- Bryce, Martin R.
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p. 2591 - 2593
(2007/10/02)
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