Diphenylacetylene → HCID 19601744, compound

Participants

Reaction Steps

Hydrosilation of diphenylacetylene in the presence Into the same apparatus as described in Example 1 were added 6.1 g of bis(dichlorosilyl)methane, 6.1 g of diphenylacetylene, 28.3 μI of 0.1 M H2PtCl6 /IPA, and 20 ml of dried benzene. The flask content was refluxed, with stirring, for 12 hours and then the solvent removed at atmospheric pressure. The products were vacuum distilled at 67 Pa to give a crude product mixture. Crystallization from benzene gave 7.83 g of 1,1,3,3-tetrachloro-4,5-diphenyl-1,3-disilacyclopentane (yield 71 %) and 0.7 g of 3,3,5,5-tetrachloro-1,2,6,7-tetraphenyl-3,5-disilahepta-1,6-diene (yield 4%). 1,1,3,3-Tetrachloro-4,5-diphenyl-1,3-disilacyclopentane=1H-NMR (CDCl3, ppm): 1.51 (s, 2H, SiCH2Si), 3.50 (s, 2H, CHCH), 7.12-7.28 (m, 1OH, ArH) and 3,3,5,5-tetrachloro-1,2,6,7-tetraphenyl-3,5-disilahepta-1,6-diene=1H-NMR (CDCl3, ppm): 1.28 (s, 2H, SiCH2Si), 7.07 (s, 1H, CHPh), 7.16-7.41 (m, 20H, ArH).

Provenance & Evidence