1: 87 percent / bis(acetonitrile)palladium chloride, p-benzoquinone, lithium chloride / dimethylformamide / 28 h / 100 - 110 °C 2: 82 percent / 20percent aq. NaOH / methanol / 12 h / Heating View Scheme

With  dichloro bis(acetonitrile) palladium(II); p-benozquinone; lithium chloride in  N,N-dimethyl-formamide T=100 - 110°C; 28 h;