38444-93-8Relevant academic research and scientific papers
Physical, spectral and chromatographic properties of all 209 individual PCB congeners
Bolgar,et al.
, p. 2687 - 2705 (2007/10/03)
Through the use of two capillary GC columns: 40% octadecyl/ 15% phenyl methyl siloxane and 50% phenyl methyl siloxane, it was possible to separate 201 PCB congeners with only four unresolved pairs. The data compiled in this study for all 209 congeners will aid in the identification of selected individual components of these environmental pollutants. The use of this data also presents the opportunity for the improved quantification of the commercial PCB formulations. -from Authors
Borylation of Arylsilanes, III. - Reaction of Silylated Biphenyls and 9H-9-Silafluorenes with Tribromoborane
Gross, Ulrich,Kaufmann, Dieter
, p. 991 - 994 (2007/10/02)
Treatment of tribromoborane (9) with the 3-, 4-, and 4,4'-silylated biphenyls 7, 8, and 18 leads to substitution of the silyl groups with formation of the aryldibromoboranes 10, 11, and 19, whereas depending on the solvent the 2-isomers 12 and 4 suffer methyl abstraction to predominantly yield 14 and 20.The reaction of the silafluorene 15 with 9 exclusively leads to the dibenzoborole 16.In the first step of the reaction of the 2,2',3,3'-tetrakissilylated biphenyl 6 with 9 bissilylated silafluorene 21 is formed, in the second a twofold abstraction of a methyl group yields 22, as the central dimethylsilylene group is too much shielded for an exchange reaction. 22 is a well suited building block for constructing cyclic oligosilanes.
