acetyl chloride 0.25 h; Heating;

5percent PdCl2 in ethylene glycol dimethyl ether; acetonitrile T=20°C; Arylation;

1: n-BuLi / hexane; diethyl ether / 3 h / 0 - 25 °C 2: 1.) chlorodimethoxyborane, 2.) MCPBA, Na2CO3 / 1.) ether, 0 deg C to room temp; 1 h, 2.) -78 to 0 deg C var. temp. and solv; and without Na2CO3 View Scheme

hydrazine hydrate in ethanol 2 h; Ambient temperatureor heating, 2h;

T=120 - 130°C; 4 h;