Process to produce o-silyl o,n-ketene acetals

Details Process to produce o-silyl o,n-ketene acetals Process to produce o-silyl o,n-ketene acetals

C - Chemistry, Metallurgy

07

F

260/446.6

C07F 7/10 (2006.01) C07F 7/18 (2006.01)

Patent

CA 1332613

A PROCESS TO PRODUCE O-SILYL O,N-KETENE ACETALS ABSTRACT A process for preparing O-silyl O,N-ketene acetals having the formula, R2C=C(OSiRnX3-n)(NRa2) or Image . The process comprises contacting an alpha-haloamide with an alkali metal in the presence of an excess of an organohalo- silane, the alpha-haloamide having the formula, Image or Image ; the organohalosilane having the formula, RnSiX4-n ; and facilitating reaction among the alpha-haloamide, the alkali metal and the organohalosilane to form the O-silyl O,N-ketene acetal and alkali metal halides.

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