Photochemistry of 9-methylbicyclo[3.3.1]nonyl aryl ketones A novel 1,5-disproportionation of 1,4-hydroxy biradicals and asymmetric induction using the solid-state ionic chiral auxiliary method
作者:Shuang Chen、Brian O Patrick、John R Scheffer
DOI:10.1139/v05-147
日期:2005.9.1
5-disproportionation reaction has been discovered for 1,4-hydroxy biradicals derived from the photolysis of 9-methylbicyclo[3.3.1]nonyl phenyl ketones (1), which undergo mainly Yang cyclization both in solution and the solidstate. By applying the solid-state ionic chiral auxiliary method of asymmetric synthesis to the Yang cyclization, enantiomeric excesses as high as 95% were achieved at high reaction