87122-31-4Relevant academic research and scientific papers
Studies of Acylotropic and Silylotropic Tautomerism with 1,5-Diacylcyclopentadienes and 6-Aminofulvene-1-ketimines
Hartke, Klaus,Kohl, Anita,Kaempchen, Thomas
, p. 2653 - 2667 (2007/10/02)
The 1,5-diacyl-1,3-cyclopentadienes 2 react with thallium ethanolate to yield the thallium cyclopentadienides 3, which are transformed by acyl halides or chlorotrimethylsilane into the acyl or silyl enol ethers 4 - 6.According to NMR studies some of these compounds show acylotropic or silylotropic tautomerism up to 140 deg C.With diphenylboron bromide 3 forms the dioxaborepines 8.Condensation of 2 with heptamethyldisilazane (10) leads to the formation of the 1-acyl-6-(methylamino)fulvenes 11.O-Methylation of 11 and aminolysis of the obtained iminium salts 14 with methylamine gives rise to the isolable 6-(methylamino)fulvene-1-ketimines 17.
