1,3-Divinyltetramethyldisiloxane → 1-(2-Methylphenethyl)-3-vinyltetramethyldisiloxane
Reaction equation
CC1C=CC=CC=1[CH2:4][CH2:5][Si:6]([CH3:21])([CH3:20])[O:7][Si:8]([CH3:19])([CH3:18])[CH2:9][CH2:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=1[CH3:17].C([Si](C)(C)O[Si](C)(C)C=C)=C>>[CH3:17][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=1[CH2:10][CH2:9][Si:8]([CH3:19])([CH3:18])[O:7][Si:6]([CH3:20])([CH3:21])[CH:5]=[CH2:4]Participants
3
Procedure
The following were charged to a 1 L roundbottom flask equipped with a stirrer and thermometer: 200 g 1.3-di(2-methylphenethyl)tetramethyldisiloxane as prepared in Example 3, 600 g 1,3-divinyltetramethyldisiloxane, and 5 g thoroughly dehydrated activated clay. This was followed by heating to 80° to 85° C. and stirring for 2 hours. The reaction mixture was then filtered and the filtrate was heated in vacuo to afford 160 g 1-(2-methylphenethyl)-3-vinyltetramethyldisiloxane.
Workup
- additionThe following were charged to a 1 L roundbottom flask