Styrene → Phenethyldimethylchlorosilane

Reaction equation

[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH3:9][SiH:10]([CH3:12])[Cl:11]>[Pt].C1(C)C=CC=CC=1>[CH2:1]([Si:10]([CH3:12])([CH3:9])[Cl:11])[CH2:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

Procedure

Reaction between styrene and dimethylchlorosilane with platinum catalyst (no substance acting as auxiliary catalyst). 526 mg Styrene and 408 mg dimethylchlorosilane were introduced into a glass tube, and 2.5 mg of a toluene solution of a 0-valent platinum complex of divinylsiloxane (0.04 wt % platinum content) were added. The tube was sealed with Teflon tape and a rubber septum and then placed in a 50° C. oil bath where it was heated for 30 minutes. After cooling, the tube contents were analyzed by gas chromatography revealing a styrene conversion of 98% and a phenethyldimethylchlorosilane yield of 84%. The ratio between the phenethyldimethylchlorosilane and (α-methylbenzyl)dimethylchlorosilane was 4.7:1.