Abstract (Chloromethyl) diphenylsilane Ph 2 HSiCH 2 Cl (1) was prepared from Ph 2 SiHCl and LiCH 2 Cl, in situ, and was then treated with CF 3 SO 3 H/LiCl and CF 3 SO 3 H/LiBr to give the (chloromethyl) dihalosilanes Cl 2 HSiCH 2 Cl (2) and Br 2 HSiCH 2 Cl (3). I 2 HSiCH 2 Cl (4) was formed quantitatively in a protodearylation reaction between liquid hydrogen iodide and 1. Fluorination of 4 with ZnF 2 gave F 2 HSiCH 2 Cl (5), albeit in low ...
