Control of selectivity in the generation and reactions of oxonium ylides
作者:Deana M. Jaber、Ryan N. Burgin、Matthew Hepler、Peter Zavalij、Michael P. Doyle
DOI:10.1039/c1cc12443a
日期:——
Dirhodium catalyzed reactions of aryl-substituted tetrahydropyranone diazoacetoacetates produce ylide intermediates that unexpectedly yield two oxabicyclo[4.2.1]-nonane diastereoisomers, but a single diastereoisomer is formed by increasing the steric bulk of the aryl substituent.