Highly selective methyl transfer from methylsilanes to phenylthallium(III) crown ether complexes
- Osaka Univ. (Japan)
- Osaka Inst. of Technology (Japan)
Reactions of (18-crown-6)phenylthallium(III) diperchlorate monohydrate (1a) with Me[sub 3]SiR (R = PhCH[sub 2], Et, Ph, CH[double bond]CH[sub 2], SiMe[sub 3], OSiMe[sub 3]) proceeded at 60[degrees]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[degrees]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 fragments by a hydroxy group using (1,7-DTC)phenylthallium(III) bis(trifluoromethanesulfonate) (1b) was employed with trans-2-((trimethylsilyl)methyl)-1-cyclohexanol, affording a bicyclic silyl ether in 92% yield. 18 refs., 1 tab.
- OSTI ID:
- 6395932
- Journal Information:
- Organometallics; (United States), Vol. 12:1; ISSN 0276-7333
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ORGANOMETALLIC COMPOUNDS
CHEMICAL REACTIONS
SILANES
THALLIUM COMPOUNDS
CYCLOHEXANOL
HYDRATES
POLYETHYLENE GLYCOLS
SILOXANES
TRAPPING
ALCOHOLS
GLYCOLS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SILICON COMPOUNDS
POLYMERS
SILICON COMPOUNDS
400201* - Chemical & Physicochemical Properties