220248-97-5Relevant academic research and scientific papers
Syntheses of donor-acceptor-substituted 2,6-stellanes
Fritzsche, Gerd,Gleiter, Rolf,Irngartinger, Hermann,Oeser, Thomas
, p. 73 - 81 (1999)
A number of condensations could be carried out using tricyclo[3.3.0.03,7]octane-2-one (stellanone, 4) and tricyclo[3.3.0.03,7]octane-2,6-dione (2,6-stelladione, 5) as starting materials. The components for condensations were 2-trimethylsilyl-1,3- dithlane (6), 1,1-bis(trimethylsilyl)-1H-cyclopropa[b]naphthalene (7), its 3,6-dimethoxy-substituted analogue 8, fluorene (12), xanthene (13), diethyl malonate (14), and malononitrile (15). The condensation reactions with 5 yielded mono- and disubstituted products, among them were the donor-acceptor- substituted 2,6-stellanes 33-35. The structures of 18 (prepared from stellanone and fluorene), 19, 24, 27, 31 and 32 (synthesized by condensation of 2,6-stelladione and 2-trimethylsilyl- 1,3-dithiane and malononitrile, respectively) were determined by X-ray crystallography.
