Synthesis of imidazole 2-thiones via thiohydantoins

Details Synthesis of imidazole 2-thiones via thiohydantoins Synthesis of imidazole 2-thiones via thiohydantoins

2011-04-05

2011-04-05

Stockton, Laura L. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07919630

ABSTRACT:
The present invention provides a method of making an imidazole 2-thione which comprises the step(s) of reducing a thiohydantoin to said imidazole-2-thione.

REFERENCES:
Koltai et al., Chemische Berichte (1971), 104(1), pp. 290-300.
Jackman, et al. “The Preparation of Some Substituted Thiohydantoins and Thioimidazoles,” Journal of the American Chemical Society, American Chemical Society, Washington, DC, US, vol. 70, 1948, pp. 2884-2886, XP000992597.
Nyitrai, et al., “Hydantoins, Thiohydantoins and Glycocyamidines, XXVII, reductive rearrangements of the retrobenzylic acid type induced by Lewis acid, IV, scope of the aluminium chloride induced reactions of dithiohydantoins with arenes,” ACTA Chimica Academiae Scientiarum Hungaricae, vol. 60, No. 1-2, 1969, pp. 141-149, XP009080567.

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