Phenylacetylene → Dichloro[(dichlorosilyl)methyl](2-phenylethenyl)silane

Participants

Reaction Steps

Hydrosilation of phenylacetylene with bis(dichlorosilyl)methane in the presence of Pt((CH2 =CHSiMe2)2O)2. Into the same apparatus as described in Example 1 were added 0.99 g of bis(dichlorosilyl)methane, 20 μl 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. The flask content was heated to reflux and 0.52 ml of phenylacetylene was added over a 10 minute period. The flask content was refluxed, with stirring, for another 2 hours and then the solvent removed at atmospheric pressure. The products were vacuum distilled at 67 Pa to give a mixture comprising 1.05 g of 3,3,5,5-tetrachloro-1-phenyl-3,5-disilapent-1-ene (TCD-GC area 18.9%) and 3,3,5,5-tetrachloro-1,7-diphenyl-3,5-disilahepta-1,6-diene (TCD-GC area 74.1%).

Provenance & Evidence