6948-59-0Relevant academic research and scientific papers
Reaction of 10,10-dimethyl-9-trimethylsiloxy-9,10-dihydrophenanthrene-9- carbonitrile with acids
Bushmelev,Genaev,Sal'nikov,Shubin
, p. 1057 - 1061 (2011)
The behavior of 10,10-dimethyl-9-trimethylsiloxy-9,10-dihydrophenanthrene- 9-carbonitrile in trifluoromethanesulfonic acid and acid systems CF 3SO3H-CD2Cl2, HSO 3F-SO2ClF-CD2Cl2, and CF 3COOH-CD2Cl2 were studied by NMR spectroscopy. Principal reaction schemes were determined; the first step in these schemes is protonation of the initial compound at the oxygen or nitrogen atom.
Formation of biphenylene by elimination of C2 from 9,10-didehydrophenanthrene at 1100°C
Brown, Roger F.C.,Coulston, Karen J.,Eastwood, Frank W.
, p. 6819 - 6820 (2007/10/03)
Flash vacuum pyrolysis of phenanthrene-9,10-dicarboxylic anhydride 5 and of 2,2-dimethyl-5-(9'-fluorenylidene)-1,3-dioxan-4,6-dione 8 at 1100°C/0.03-0.04 mm Hg gave pyrolysates which were analysed by 1H NMR spectroscopy and shown to contain phenanthrene 9 as a major constituent and biphenylene 2 as a minor one.
