tert-Butyl methacrylate → HCID 22239517, compound

Participants

Reaction Steps

A 500-ml flask was charged with 72.1 g (0.60 mol) of 4-hydroxystyrene, 17.1 g (0.12 mol) of t-butyl methacrylate, 1.5 g (0.009 mol) of azobisisobutyronitrile and 150 ml of dioxane, and the mixture was stirred for 100 hours at 80t in a nitrogen gas stream. The resultant reaction mixture was poured into 5 liters of xylene, and precipitate formed was collected by filtration. The resultant precipitate was dissolved in 200 ml of diethyl ether, and the solution was poured into 3 liters of n-hexane to collect precipitate formed by filtration (reprecipitation process). This reprecipitation process was repeated 3 times, and the resultant precipitate was dried to obtain 26.3 g of a 4-hydroxystyrene/t-butyl methacrylate copolymer. The GPC analysis of the polymer thus obtained revealed that its Mw was 6,410. Besides, the 1H-NMR spectrum analysis of the polymer revealed that the copolymerization ratio of 4-hydroxystyrene to t-butyl methacrylate was 71/29.

Provenance & Evidence