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

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Reaction Steps

Into a 1000 mL round bottom flask, equipped with a Teflon-coated stir bar and located in a water bath at room temperature, is added tetramethyidisiloxane (134 grams, 1 mole) and allyl methacrylate (126 grams, 1 mole). A reaction is initiated by the addition of Karstedt's catalyst (0.5 mL) and the charge is stirred for 3 hours. At this point PPh3 (10 mL) is added and the charge is vacuum distilled (0.1 millibar) at 50° C. The product, 112 grams of colorless liquid, is rectified on a spinning band column (75 plates, 0.3 mbar) to yield 41 grams (16%) of SiH-MA. The boiling point is determined to be 62° C.

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