Acetylene → 1,1,3,3-Tetrachloro-1,3-disilacyclopent-4-ene

Participants

Reaction Steps

Hydrosilation of acetylene with bis(dichlorosilyl)methane in the presence of Pt((CH2 =CHSiMe2)2O)2. Into the same apparatus as described in Example 1 were placed 18 μl of Pt((CH2 =CHSiMe2)2O)2 in 1,1,3,3-tetramethyl-1,3-divinyl-1,3-disiloxane (4 weight percent Pt) and 20 ml of dried benzene. Acetylene gas was blown into the flask at 90 ml/min for 5 hours. The products were vacuum distilled at 0.5 torr to yield a mixture comprising 3.32 g of 1,1,3,3-tetrachloro-1,3-disilacyclopent-4-ene (TCD-GC) area 6.2%); 1,1,3,3-tetrachloro-1,3-disilacyclopentane (TCD-GC area 47.9%); and 1,1,3,3,6,6,8,8-octachloro-1,3,6,8-tetrasilaoctane (TCD-GC area 27.1 %).

Provenance & Evidence