sodium; ammonium chloride liquid NH3, 1.) 1 h, 2.) 2.5 h; Yield given. Multistep reaction;

1: n-butyl-magnesium bromide; cis-2,10-dimethyl-lt;1,2,3gt;benzothiadiphosphololt;2,3-bgt;lt;1,2,3gt;benzothiadiphosphole; Bromure de phenyl magnesium in tetrahydrofuran 0.0833333 h; 2: methylmagnesium bromide in tetrahydrofuran Title compound not separated from byproducts;

1: 1.) Na / 1.) liquid NH3, 1 h, 2.) 2.5 h 2: 1.) Na; NH4Cl / liquid NH3, 1.) 1 h, 2.) 2.5 h View Scheme