146249-31-2Relevant academic research and scientific papers
Highly selective methyl transfer from methylsilanes to phenylthallium(III) crown ether complexes
Kakiuchi, Fumitoshi,Furuta, Kiyonori,Murai, Shinji,Kawasaki, Yoshikane
, p. 15 - 16 (1993)
Reactions of (18-crown-6)phenylthallium(III) diperchlorate monohydrate (1a) with Me3SiR (R = PhCH2, Et, Ph, CH=CH2, SiMe3, OSiMe3) proceeded at 60°C to provide (18-crown-6)phenylmethylthallium-(III) perchlorate (3) in good to excellent yields. Cleavage of the Me-Si bond in tetramethylsilane using 1a also occurred at 25°C, albeit for a long reaction time. The silicon-containing products of the reaction of 1a with benzyltrimethylsilane were siloxanes. Intramolecular trapping of the silyl fragment by a hydroxy group using (1,7-DTC)phenylthallium(III) bis(trifluoromethane-sulfonate) (1b) was employed with trans-2-((trimethylsilyl)methyl)-1-cyclohexanol, affording a bicyclic silyl ether in 92% yield.
