A theoretical investigation of the facial selectivity of optically active oxazolidin-2-one-substituted dienes has been realized. This analysis enabled the development of (R)-4-phenyloxazolidin-2-thione as a very effective chiral auxiliary for cycloaddition of 1-aminodiene.
Robiette, R., Cheboub-Benchaba, K., Peeters, D., & Marchand-Brynaert, J. (2003). Design of a new and highly effective chiral auxiliary for Diels-Alder reaction of 1-aminodiene. The Journal of Organic Chemistry, 68(25), 9809-9812. https://doi.org/10.1021/jo0302049 (Original work published 2003)