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.