Cs/Na/K alloy 1.) THF, -75 deg C, 38 s; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

lithium; methyl iodide in tetrahydrofuran 1.) -10 deg C, 2.) -75 deg C, 35 min;

Cs/Na/K alloy 1.) THF, -75 deg C, 38 s; Yield given. Multistep reaction. Further byproducts given. Yields of byproduct given. Title compound not separated from byproducts;

lithium; methyl iodide 1.) THF, -10 deg C, 2.) 35 min; Yield given. Multistep reaction. Yields of byproduct given;