Zur chemie der silylene: Cycloadditionen von methoxymethylsilylen mit heterodienen
作者:Joachim Heinicke、Barbara Gehrhus
DOI:10.1016/0022-328x(92)83019-e
日期:1992.1
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
将由1,2-二甲基四甲氧基乙硅烷热生成的甲氧基甲基亚甲硅烷基与苯甲腈,一些苯甲酰单亚胺和1,4-二氮杂丁二烯反应,以中等产率提供良好的1,3-二氧杂-,1,3-氧杂杂-和1,3- diaza-2-sila-4-cyclopentenes通过正式的1,4-环加成反应。分别用不饱和酮和1-氮杂丁二烯,类似地获得了1-氧杂-和1-氮杂-2-硅四-4-环戊烯。然而,这些伴随有3-烯异构体。杂环在热上非常稳定,但对水解和氧化敏感。它们由NMR数据表征。