Vinyl ether → Butyl ether

Temperature

25 °C

Into a 30 ml round-bottom flask with two necks equipped with a three-way cock, in which the air had been replaced with nitrogen gas, there were added 2.15 mg (3.3×10−3 mmol) of acenaphthylene heptacarbonyl ruthenium (the polynuclear ruthenium-carbonyl complex as expressed by the formula (V): hereinafter sometimes referred to simply as the “Ru complex”) as the catalyst, 0.05 ml of 1,4-dioxane as the solvent, and 0.050 ml (0.33 mmol) of dimethylphenylsilane (HSiMe2Ph) as the silane compound. After stirring at room temperature (25° C.) for thirty minutes, there was added 0.43 ml (3.3 mmol) of tert-butyl vinyl ether (tBuVE) as the vinyl ether compound. The resultant solution was stirred at room temperature for ten minutes, and then the 1,4-dioxane and the excess phenyldimethyl silane were distilled off. Into the residual viscous liquid was dissolved in 2 ml of hexane. Following the addition of methanol 6 ml, the resultant white deposit was subjected to drying in vacuo, to yield a white solid material, 277 mg (92%). The molecular weight of the white solid material was determined by GPC, and the material was also subjected to the measurement of IR, 1H and 13C NMR spectra. FIG. 2 shows the GPC chart. The assignment of the IR and NMR data are summarized below. From these results the white solid material was identified to be polyvinyl tert-butyl ether.

1. customInto a 30 ml round-bottom flask with two necks equipped with a three-way cock, in which the air
2. distillationthe 1,4-dioxane and the excess phenyldimethyl silane were distilled off
3. dissolutionInto the residual viscous liquid was dissolved in 2 ml of hexane
4. additionthe addition of methanol 6 ml
5. customto drying in vacuo
6. customto yield a white solid material, 277 mg (92%)
7. customFrom these results the white solid material

ORD record

ord-3bca46efe37a4c40bf5e074ba95c4320

Source dataset

uspto-grants-2008_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07425599B2