Conformationally rigid chiral [4 + 2]cycloadduct-based 2-oxazolidinones as new auxiliaries

Article abstract of DOI:10.1016/0040-4039(91)80573-O

Newly introduced enantiomerically pure [4 + 2]cycloadduct-based 2-oxazolidinones which are conformationally fixed by bicyclo[2.2.2] and [2.2.1] ring systems, serve well as excellent chiral auxiliaries in the Evans' asymmetric strategy.