- 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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- Reactions of Dimedone with Sulfur Chlorides
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A comparative study of the reactions of dimedone (1), as a representative β-diketone, with various simple sulfur chlorides has revealed that the product distribution observed can best be accounted for in terms of competing mechanisms of oxygen attack or carbon attack (at C-2) in the enol form.Oxygen attack is particularly important with SCl2 and S2Cl2 and appears to involve a subsequent intramolecular transfer of Cl (or ClS) to C-2, via an intermediate such as 12.The relative electrophilicity of the reagents and the facility with which 12 can be expected to rearrange to a C-2 substituted product appear to be among the factors influencing the course of these reactions.Some of the reactions show promise as synthetic routes to potentially useful dimedone derivatives.
- Still, Ian W. J.,Kutney, Gerald W.
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p. 4911 - 4914
(2007/10/02)
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- REACTIONS OF N,N'-DISUBSTITUTED SULFUR DIIMIDES WITH CH ACIDS. II. REACTION OF N,N'-BIS(PHENYLSULFONYL)SULFUR DIIMIDE WITH 5,5-DIMETHYL-1,3-DIOXOCYCLOHEXANE
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The reaction of N,N'-bis(phenylsulfonyl)sulfur diimide with 5,5-dimethyl-1,3-dioxocyclohexane in a ratio of 1:2 leads to the formation of 4-oxo-6,6-dimethyltetrahydro-1,3-benzoxathiole-2-spiro-4',4'-dimethylcyclohexane-2',6'-dione.
- Levchenko, E. S.,Gaidamaka, S. N.,Kalinin, V. N.,Budnik, L. V.
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p. 871 - 875
(2007/10/02)
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