The organosilicon compounds

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PROBLEM TO BE SOLVED : To provide an organic silicon compound useful for applications as a terminal alkoxysilylating agent or hardener of organopolysiloxane such as α, ω-dihydroxy polydimethylsiloxane, or a surface treating agent of silica, storage stabilizer of dealcoholization type RTV as a scavenger such as alcohol or the like.SOLUTION : There is provided diketene silyl acetal-type compound represented by the following formula (1). (1), where R, Rand Rare a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms and which may be same or different and a represents an integer of 0 to 2.SELECTED DRAWING : None