104. Asymmetric diels-alder reactions of acrylates derived from 3-alkyl-borneols and -isoborneols
     Oppolzer, W.; Chapuis, C.
     Tetrahedron Lett. 1984, 25, 5383-5386

Starting from (+)-camphor the chiral alcohols 7 and 8 have been prepared; their acrylates 9 and 13 underwent TiCl₂(OiPr)₂-mediated Diels-Alder addition to cyclopentadiene with stereoface-differentiations of 66% d.e. and 94% d.e., respectively.

DOI : 10.1016/S0040-4039(01)91290-0