1: 2,5-diiodothiophene-1,1-dioxide With tris-(dibenzylideneacetone)dipalladium(0); triphenyl-arsane in 1,4-dioxane Stille Cross Coupling; 0.166667 h; Inert atmosphereSealed tube; 2: 2-trimethylstannylbenzene in 1,4-dioxane T=100°C; Stille Cross Coupling; 6 h; Inert atmosphereSealed tube; 3: With tris-(dibenzylideneacetone)dipalladium(0); triphenyl-arsane in 1,4-dioxane T=100°C; Stille Cross Coupling; Inert atmosphereSealed tube;

1.1: diethyl ether / |Schlenk technique; |Inert atmosphere; |Reflux 2.1: tris-(dibenzylideneacetone)dipalladium(0); triphenyl-arsane / 1,4-dioxane / 0.17 h / |Inert atmosphere; |Sealed tube 2.2: 6 h / 100 °C / |Inert atmosphere; |Sealed tube 2.3: 100 °C / |Inert atmosphere; |Sealed tube View Scheme

1: 45 percent / Lawesson's reagent / toluene 2: 83 percent / dimethyldioxirane / acetone; CH2Cl2 View Scheme

methyloxirane in 1,2-dichloro-ethane Heating;