69. A reinvestigation of asymmetric induction in diels-alder reactions to chiral acrylates.
    Oppolzer, W.; Kurth, M.; Reichlin, D.; Moffatt, F.
    Tetrahedron Lett. 1981, 22, 2545-2548

The chiral induction in the Diels-Alder addition 1 → 2, assessed reliably by ¹⁹F-NMR-spectroscopy of the endo-esters 4, varied between 47 - 93% in favor of the 2-(R)-adducts 2 depending on the auxiliary chiral group and the Lewis-acid catalyst.

DOI : 10.1016/S0040-4039(01)90516-7