Sulfur-containing compounds with S3S or C3S bonds, such as sodium dithionite Na2S2O4, sodium hydroxymethanesulfinate HOCH2SO2Na, and thiourea dioxide (NH2)2CSO2 (I) are widely used in chemistry and chemical technology as reducers [1, 2]. One of the most important application fields of thiourea and their oxidation products, trioxides, is guanidine syn- thesis [335] vigorously developed over the past years [6, 7]. This is explained by an important biological role of ...
[Scherz, Michael W.; Fialeix, Michelle; Fischer, James B.; Reddy, N. Laxma; Server, Alfred C.; et al. Journal of Medicinal Chemistry, 1990 , vol. 33, # 9 p. 2421 - 2429]