Preparation of organosilicon intermediate and their derivatives in a novel grignard process
AssigneeDow Corning Corporation
InventorBinh T. Nguyen
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Abstract
A one-step process for the preparation of organosilicon intermediates. The organosilicon intermediates comprise a group which includes such intermediates as 1,4-bis(dimethylsilyl)benzene, 1,4-bis(dimethylchlorosilyl)benzene, and their derivatives. The process comprises: combining a dihalobenzene with magnesium metal in a co-solvent mixture of an ether and an organic solvent and reacting them with an organosilicon compound of the general formula, R2bHcSiXd. The resulting mixture is allowed to react to completion. The resulting mixture is passed through a filtration device. The liquid, now free of solid magnesium halide, is subjected to a separation technique to recover the subject organosilicon intermediates and their derivatives.
Claims14
A one-step process for the preparation of organosilane intermediates, the process comprising:
- combining a dihalobenzene in a co-solvent mixture of an ether and an organic solvent, wherein the dihalobenzene is described by the formula R1Xa, with magnesium metal in an ether and an organic solvent, and reacting the combination with an organohalosilane of the formula, R2bHcSiXd wherein R1 benzene, X is selected from the group consisting of bromine and chlorine, a has a value of 2, R2 is independently selected from hydrocarbon groups comprising 1 to about 6 carbon atoms, b has a value of 0 to 3, c has a value of 0 to 3, and d has a value of 0 to 3.
Dependencies are inferred from the claim text.