Crystal structure of 2,4-bis(p-methoxyphenyl)-2,4-dithioxo-1,3,2-λ⁵,4λ⁵-dithiadiphosphetane, C₁₄H₁₄P₂S₄

Use of Lawesson's Reagent in Organic Syntheses

“…20 It was indicated that LR is not stable in solution at temperatures over 110 °C, and it decomposes or polymerizes slowly. 14,15 Single-crystal structures, obtained from 1,2-dichloroethane and toluene, were disclosed to be monoclinic P12 1 /c1 and P1 h, 21,22 respectively, along with its solid-state NMR studies. 22 Nishio et al reported the reactivity order of LR toward hydroxyl and carboxyl groups.…”

“…It can easily be synthesized with the reaction of anisole and P 4 S 10 (150 °C, 6 h, ∼70%). ,, Also, the reaction of anisole with elemental sulfur and red phosphorus (150−155 °C, 6 h, 76%) produces LR . It was indicated that LR is not stable in solution at temperatures over 110 °C, and it decomposes or polymerizes slowly. , Single-crystal structures, obtained from 1,2-dichloroethane and toluene, were disclosed to be monoclinic P 12 1 / c 1 and P 1̄, , respectively, along with its solid-state NMR studies …”