Isoprene → 2-Methylbuta-1,3-diene;styrene

Participants

Reaction Steps

In a globe box, a magnetic stirring bar was placed in a flask (100 ml) and then added with isoprene (1.022 g, 15.0 mmol), styrene (3.124 g, 30.0 mmol), and [Sc(CH2SiMe3)2 (PNP) (0.019 g, 0.025 mmol) in chlorobenzene solution (8 ml), followed by the addition of [Ph3C] [B(C6F5)4] (0.023 g, 0.025 mmol) in chlorobenzene solution (2 ml) and stirring at high-speed. There action proceeded while stirring for 5 hours at room temperature and was then terminated by the addition of methanol. The reaction solution was poured into 200 ml of a methanol solution containing small amounts of hydrochloric acid and butylhydroxyl toluene. The precipitated polymer product was separated by decantation, washed with methanol, and dried at 60° C., thereby obtaining 1.230 g of copolymer.

Provenance & Evidence