Heterocycles The frontispiece depicts a select number of heterocycles accessible from substituted oxazolones through cascade reactions induced by catalytic amounts of BF
3⋅Et
2O and H
2O. These products could serve as novel structural motifs and building blocks for natural and designed molecules of biological and medicinal importance, including natural products, protein ligands and drug candidates. For more details, see the Communication by Y. He, Y. Lan, K. C. Nicolaou et al. on
page 7696 ff.