(untitled) - Hadi, T; Díaz-Rodríguez, A; Khan, D; Morrison, J P; Kaplan, J M; Gallagher, K T; Schober, M; Webb, M R; Brown, K K; Fuerst, D; Snajdrova, R; Roiban, G.-D (Org. Process Res. Dev., 2018)
Cyclic oxonitrile syntheses yields are sometimes inconsistent and strongly dependent on the substrate and operational conditions; see: