e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
Silicon-containing heterocyclic compounds I. Preparation and reactions of 1, 1, 2, 2,-tetramethyl-1, 2-disilacycloalkanes, from disilacyclopentane to disilacyclooctane
M Kumada, K Tamao, T Takubo, M Ishikawa
Index: Kumada,M. et al. Journal of Organometallic Chemistry, 1967 , vol. 9, p. 43 - 55
Method (A) gave the disilacyclohexane (VII) and-heptane (VIII) in good and comparable yields. However, this method was found to be far from satisfactory for synthesis of the disilacylcooctane (IX); sometimes only a trace of it could be detected by gas chromatography in the reaction mixture. Almost all the product was a viscous polymeric material.