Novel preparation method for bis-(alkoxysilylmethyl)carboranes from bis-(bromomagnesiummethyl)carboranes
2017
Abstract The reactions of bis-(bromomagnesiummethyl)carboranes with dimethyldimethoxysilane were studied. It has been shown that interaction of 1,2-bis-(bromomagnesium)- o -carborane with an excess of dimethyldimethoxysilane gives the mixture of 1,2-(methoxydimethylsilylmethyl)- o -carborane and exocyclic 1,2-( o -carboranyleno)-4,6-bis-(dimethylsilyl)-5-oxa-cycloheptane. In the case of 1,7-bis-(bromomagnesiummethyl)- m -carborane, only 1,7-bis-(methoxydimethyl-silylmethyl)- m -carborane is formed. The possibility of obtaining Grignard reagents from 1,2 (7)-(bromomethyl)- o(m) -carboranes has been established.
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