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

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.

1. customIn a globe box, a magnetic stirring bar was placed in a flask
2. stirringwhile stirring for 5 hours at room temperature
3. customwas then terminated by the addition of methanol
4. additionThe reaction solution was poured into 200 ml of a methanol solution
5. additioncontaining small amounts of hydrochloric acid and butylhydroxyl toluene
6. customThe precipitated polymer product was separated by decantation
7. washwashed with methanol
8. customdried at 60° C.

ORD record

ord-c245a5b003694888b0afe197a213a636

Source dataset

uspto-grants-2011_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07956141B2