A New Approach to the Synthesis of Carboranylmethylsiloxanes
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An efficient method for the synthesis of o(m)-carboranylmethylsiloxanes by the Grignard reaction from 1,2(7)-bis(bromomagnesiummethyl)-o(m)-carboranes and 1-chloro-1,1,3,3,3-pentamethyldisiloxane has been developed. As a result, 1-(1,1,3,3,3-pentamethyldisiloxanylmethyl)-2(7)-methyl-o(m)-carboranes, 1,2(7)-bis(1,1,3.3,3-pentamethyldisiloxanylmethyl)-o(m)-carboranes, exocyclic 1,2-(o-carborano)-4,6-bis(dimethylsilyl)-5-oxacycloheptane, 1,7-bis(chloro-1,1,3,3-tetramethyldisiloxanylmethyl)-m-carborane, and oligomer containing two 1,7-bis(dimethylsilylmethyl)-m-carborane units have been obtained.
The spectral study in this work was performed using the equipment of the Center for Molecular Structure Studies, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences.
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