作者:Gerd Fritzsche、Rolf Gleiter、Hermann Irngartinger、Thomas Oeser
DOI:10.1002/(sici)1099-0690(199901)1999:1<73::aid-ejoc73>3.0.co;2-b
日期:1999.1
A number of condensations could be carried out using tricyclo[3.3.0.0(3.7)]octane-2-one (stellanone, 4) and tricyclo[3.3.0.0(3.7)]octane-2,6-dione (2,6-stelladione, 5) as starting materials. The components for condensations were 2-trimethylsilyl-1,3-dithiane (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.