Allyl methacrylate → 2-Propenoic acid-3-(1,1,3,3-tetramethyldisiloxanyl)propyl ester

Reaktionsgleichung

[CH3:1][SiH2:2][O:3][Si:4]([CH3:7])([CH3:6])[CH3:5].[C:8]([O:13][CH2:14][CH:15]=C)(=[O:12])[C:9](C)=[CH2:10].[C:17]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>>[CH3:5][Si:4]([CH2:7][CH2:15][CH2:14][O:13][C:8](=[O:12])[CH:9]=[CH2:10])([CH3:6])[O:3][SiH:2]([CH3:17])[CH3:1]

Komponenten

Edukt 3

HCID 7274Allyl methacrylate

HCID 11776Triphenylphosphine

HCID 57376941Tetramethyl disiloxane

Produkt 1

HCID 157113442-Propenoic acid-3-(1,1,3,3-tetramethyldisiloxanyl)propyl ester

Versuchsvorschrift

In a 1000 mL round bottom flask equipped with a Teflon-coated stir bar and placed in a water bath at room temperature are added tetramethyldisiloxane (134 grams, 1 mole) and allyl methacrylate (126 grams, 1 mole). The reaction is induced by the addition of Karstedt's catalyst (0.5 mL) and the charge is stirred for 3 hours. At this point triphenylphoshine (10 mL) is added and the charge is vacuum distilled (0.1 milibar) at 50° C. The product, 112 grams of a colorless liquid, is rectified on a spinning band column (75 plates, 0.3 mbar) to yield 41 g (16%) of SiH-MA, with a boiling point of 62° C.