166906-63-4Relevant academic research and scientific papers
Synthesis of 4-silaspiro[3.4]octa-1,5-diene derivatives: Hybrid spiro compounds
Khan, Ezzat,Wrackmeyer, Bernd,Kempe, Rhett,Glatz, Germund
, p. 384 - 391 (2015)
Trialkynyl(vinyl)silanes CH2=CH=(C=Ci=R)3 (R=Bu, Ph, p-tolyl) were prepared and treated with 9-borabicyclo[3.3.1]nonane (9-BBN). Consecutive 1,2-hydroboration and intramolecular 1,1-carboboration reactions (each requires different reaction conditions) were studied. 1,2-Hydroboration of the Si-vinyl group takes place at ambient temperature (23°C in tetrahydrofuran), followed by intramolecular 1,1-vinylboration to give 1-silacyclopent-2-ene derivatives, bearing still two alkynyl functions at the silicon atom. Further treatment with a second equivalent of 9-BBN affords 1-alkenyl-1-(alkynyl)-1-silacyclopent-2-ene derivatives. These undergo intramolecular 1,1-vinylboration to give 4-silaspiro[3.4]octa-1,5-dienes bearing the boryl groups at 2 and 6 positions. Protodeborylation of all new compounds (intermediates and final products) using acetic acid in slight excess afforded corresponding silanes including spirosilanes. All compounds were characterized using multinuclear NMR spectroscopy (1H, 11B, 13C, 29Si) in solution state. Solid-state structures for one of the trialkynyl(vinyl)silanes (R=p-tolyl) and one of the 1-silacyclopent-2-ene derivatives (R=Ph) were confirmed using X-ray diffraction.
Synthesis, characterization, and non-isothermal curing kinetics of two silicon-containing arylacetylenic monomers
Tan, Dexin,Shi, Tiejun,Li, Zhong
experimental part, p. 831 - 845 (2012/05/20)
Vinyltri(phenylethynyl)silane ((ph-C≡C)3-Si-C=CH 2; VTPES) and phenyltri(phenylethynyl)silane ((ph-C≡C) 3-Si-ph; PTPES) were synthesized by Grignard reaction. Their molecular structures were characterized by means of
