1: With divinylbenzene cross-linked polystyrene Rink amine resin; 2,2'-bis-(diphenylphosphino)-1,1'- binaphthyl; sodium t-butanolate; tris-(dibenzylideneacetone)dipalladium(0) in 1,4-dioxane T=80°C; 20 h; 2: in dichloromethane 0.75 h; Further stages.;

potassium tert-butylate in dimethyl sulfoxide T=20 - 25°C; 24 h;

caesium carbonate in dimethyl sulfoxide T=155°C; 10 h;

PPA