Toluene → alpha-Methylstyrene isopropenyltoluene

Reaction equation

[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:3].[C:10]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1[CH3:19])([CH3:12])=[CH2:11].C1(C)C=CC=CC=1>CC(C)=O>[CH3:3][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:1].[C:10]([C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=1[CH3:19])([CH3:12])=[CH2:11]

Participants

Procedure

250 g α-methyl styrene (99.8% purity), 250 g isopropenyltoluene, and 500 g toluene were introduced into a three-mouthed flask, and mixed while boron trifluoride phenol complex was slowly added, and the material was then cooled under dry ice and acetone solvent and reacted for 3 hr at 20° C. Next, alkali was added to inactivate and remove the catalyst, and concentrated to remove the solvent and unreacted monomer, and α-methylstyrene-isopropenyltoluene copolymer was obtained as a residue. This polymer was designated Polymer B3, and its physical properties are listed in Table 2.