1: n-butyl-magnesium bromide; cis-2,10-dimethyl-lt;1,2,3gt;benzothiadiphosphololt;2,3-bgt;lt;1,2,3gt;benzothiadiphosphole in tetrahydrofuran 0.0833333 h; 2: methylmagnesium bromide in tetrahydrofuran

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;

in acetonitrile T=10 - 20°C; Mechanism;