Zur Chemie der Silylene: Cycloadditionen von Methoxymethylsilylen mit Heterodienen

Article abstract of DOI:10.1016/0022-328X(92)83019-E

Methoxymethylsilylene, generated thermally from 1,2-dimethyltetramethoxydisilane, was reacted with benzil, some benzil monoimines and 1,4-diazabutadienes to furnish in medium to good yields 1,3-dioxa-, 1,3-oxaza- and 1,3-diaza-2-sila-4-cyclopentenes via formal 1,4-cycloadditions.With unsaturated ketones and 1-azabutadienes, respectively, analogously 1-oxa- and 1-aza-2-sila-4-cyclopentenes are obtained.These are, however, accompanied by the 3-en isomers.The heterocycles are thermally very stable but sensitive to hydrolysis and oxidation.They are characterized by NMRdata.