The previous structures of several 3,4-dihydro-2H-3-hydroxymethyl-1,4-benzoxazines were erroneous (Bioorg. Med. Chem. Lett. 2006, 16, 2862; Synlett 2009, 3283 and Chinese Patent 2006-10043245). The results presented here are both detailed NMR experiments and synthetic aspects on this subject. We redress some points for the preparation of intermediates of the target molecules.
M. E. García-Rubiño, M. C. Núñez, M. A. Gallo and J. M. Campos, RSC Adv., 2012, 2, 12631 DOI: 10.1039/C2RA21706F
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