Novel transformation of α,β-unsaturated aldehydes and ketones into γ-amino alcohols or 1,3-oxazines via a 4 or 5 step, one-pot sequence

An efficient, 4-step, one-pot, highly stereoselective route to gamma-amino alcohols has been developed via an in situ alpha,beta-unsaturated imine formation, beta-boration, reduction (C=N) and oxidation (C-B) sequence and especially for certain water-soluble gamma-amino alcohols, a further step can be added to directly access the corresponding 1,3-oxazine derivatives.