An eco-friendly methodology for the direct alpha-sulfanylation of ketones, has been developed. The procedure, based on the use of functionalized diaryldisulfides and catalyzed by D,L-proline, represents a mild and efficient approach for the preparation of alpha-arylthio-ketones

Disulfide-Based Metal-Free -Sulfanylation of Ketones. -A novel metal-free proline-catalyzed protocol is presented for the sulfanylation of cyclic and acyclic ketones by using diphenylsulfides. The reaction products are afforded with high diastereoselectivities, regioselectivities, and chemoselectivities. -(VAQUER, A. F.; FRONGIA, A.; SECCI*, F.; TUVERI, E.; RSC Adv. 5 (2015) 117, 96695-96704, http://dx.doi.org/10.1039/C5RA17913K ; Dip. Sci. Chim., Univ. Stud. Cagliari, I-09042 Monserrato, Italy; Eng.) -B. Bergmann 13-081