1,5-Migrations of silicon between oxygen centers in silyl β-diketones
作者:Judith A. McClarin、A. Schwartz、T.J. Pinnavaia
DOI:10.1016/s0022-328x(00)82808-9
日期:1980.4
pentacoordination of silicon by the carbonyl oxygen atom in the cis isomer. Rates of 1,5-migration of silicon between oxygen centers in the cis isomers have been determined by NMR spectroscopy. The dependence of the rearrangement rates on diketonate substituent and angle strain at silicon indicate that the migration process is better viewed as an internalnucleophilicdisplacement, rather than a sigmatropic