4-Vinylphenol → 4-Ethynylphenol

Participants

Reaction Steps

50.5 g of the same p-vinylphenol fraction as used in Example 1, obtained by vacuum flash distillation was placed in a 300-ml flask together with 50.5 g of acetonitrile. To the resulting mixture being stirred was dropwise added 0.3 ml of an acetonitrile solution containing 0.03 g of p-toluenesulfonic acid. A polymerization reaction was conducted for 1 hour in the same manner as in Example 1 to obtain 8.5 g of a poly(p-vinylphenol). The polymer had a Mw of 15,000, a Mn of 11,500, a light transmittance at 248 nm, of 75.5% and a light transmittance at 450 nm, of 95.4%.

Provenance & Evidence