Tandem radical cyclizations promoted by O-stannyl ketyls
作者:Eric J. Enholm、Janet A. Burroff
DOI:10.1016/s0040-4020(97)00933-2
日期:1997.10
work summarizes an investigation of tandem radical cyclizations triggered by O-stannyl ketyls. This organometallic reactive intermediate is prepared from the reaction of tributyltin hydride (nBu3SnH) with a carbonyl functional group by a free radical chain mechanism. Several precursor substrates leading to “separated,” “spiro,” and “fused” cyclopentaniod ring systems were investigated which collectively