106. Preparation, structure and asymmetric diels-alder reactions of 10-arylsulfonylisobornyl acrylates
     Oppolzer, W.; Kelly, M. J.; Bernardinelli, G.
     Tetrahedron Lett. 1984, 25, 5889-5892

The crystalline chiral auxiliaries 4 and 5 were readily prepared from camphorsulfonic acid. Their acrylates underwent the diels-alder reactions 6 → 7 with modest asymmetric induction consistent with an X-ray study of 6a.

DOI : 10.1016/S0040-4039(01)81712-3