Ceban, V.; Putaj, P.; Meazza, M.; Pitak, M. B.; Coles, S. J.; Vesely, J.; Rios, R. Synergistic catalysis: highly diastereoselective benzoxazole addition to Morita–Baylis–Hillman carbonates. Chemical Communications 2014, 50 (56), 7447 DOI: 10.1039/c4cc00728j.