aluminum amalgam; 18-crown-6 ether 1.) DME, -64 deg C, 1.5 h, 2.) THF, H2O, -15 deg C, then warmed to room temp.; Yield given. Multistep reaction. Yields of byproduct given;

aluminum amalgam 1.) THF, -78 degC, 1 h, then 0 degC, 2 h; 2.) THF/H2O; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;