sodium hydride; acetic acid 1.) DMSO, room temperature, 18 h, 2.) water, 110 deg C, 18 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

lithium hexamethyldisilazane in tetrahydrofuran T=0 - 20°C; 0.416667 h;