iodine; magnesium; copper chloride in tetrahydrofuran; n-heptane; ethyl acetate

1: 2-bromo-1,1-diphenylpropene With iodine; magnesium in tetrahydrofuran 2 h; Heating; 2: chlorodi-tert-butylphosphine With copper(l) iodide in tetrahydrofuran 18 h; Heating; 3: With ammonium hydroxide in ethyl acetate Further stages.;