Synthesis,structures,and conformational analysis of dibenzodioxadisilocins

摘要

Novel dibenzodioxadisilocins were prepared using a dehalogenative coupling reaction between (2,6-dichlorophenoxy)t-butyldimethyl-silane and dimethyldichlorosilane with magnesium via an intramolecular 1,3-anionic rearrangement of the silyl group.Their structures were unequivocally confirmed by X-ray crystallography.For a comparison with the X-ray data,molecular orbital calculations on the conformations of the organosilicon macrocyclics were also carried out.