1.1
Reagents:
Sodium tert-butoxide
Catalysts:
Bis(dibenzylideneacetone)palladium
,
1,1′-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis[1,1-diphenylphosphine]
Solvents:
1,4-Dioxane
;
7 h, reflux
