p-Toluenesulfonic acid → HCID 131724323, compound

Participants

Reaction Steps

In 48 g of tetrahydrofuran was dissolved 12 g of poly(p-hydroxystyrene) having a weight average molecular weight (Mw) of 9,000 and a dispersity (Mw/Mn) of 1.05. A catalytic amount of p-toluenesulfonic acid was added. At 10° C., 4.3 g (0.029 mol) of benzyl propenyl ether was added to the solution, which was stirred for 2 hours. The reaction mixture was precipitated from a water/isopropanol mixture, followed by filtration and drying. The end polymer was obtained in an amount of 13.5 g. On 1H-NMR analysis, the ratio of p-(1-benzyloxypropyl)oxystyrene units to p-hydroxystyrene units was approximately 22.5:77.5.

Provenance & Evidence