105. Asymmetric diels-alder reactions : facile preparation and structure of sulfonamido-isobornyl acrylates
     Oppolzer, W.; Chapuis, C.; Bernardinelli, G.
     Tetrahedron Lett. 1984, 25, 5885-5888

The crystalline chiral auxiliaries , and were prepared from camphor-10-sulfonyl chlorides in 2 steps. Their readily accessible acrylates underwent efficient asymmetric diels-alder additions to cyclopentadiene, the topicity of which agrees with X-ray evidence.

DOI : 10.1016/S0040-4039(01)81711-1