1: With tris-(dibenzylideneacetone)dipalladium(0); 9,9-dimethyl-4,5-bis(diphenyl-phosphino)xanthene; sodium t-butanolate in toluene T=150°C; 0.5 h; Microwave irradiationInert atmosphere; 2: With sodium hydroxide in ethanol T=20°C; 1 h;