C[SiH](OC)OC.CC(C)=O.CCCCCCCCCCCC.[H][H].C[Si](OC)(OC)OC.[CH3:33][Si:34]([O:41][CH3:42])([O:39][CH3:40])[O:35][CH:36]([CH3:38])[CH3:37]>[Cr].[Co]>[CH3:33][Si:34]([O:41][CH3:42])([O:39][CH3:40])[O:35][C:36]([CH3:38])=[CH2:37]The 22 ml Hastelloy-C pressure reactor of Example 3 was charged with 0.056 g (0.12 mol) of Ni(SC12H25)2, 5.0 g (47.2 mmol) of methyldimethoxysilane, 5.0 g (86.2 mmol) of acetone, and 0.5 g of dodecane as internal standard. The mixture was warmed to 130° C. and maintained at that temperature for 0.5 hours. After cooling, and venting off the hydrogen gas formed during the course of the reaction, gc analysis showed the presence of 1.12 g (22%) of starting methyldimethoxysilane, 0.85 g (13%) of methyltrimethoxysilane, 1.27 g (17%) of methyldimethoxyisopropoxy silane, and 3.64 g or a 62% yield of methyldimethoxyisopropenoxysilane.
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