1225446-66-1Relevant academic research and scientific papers
α-Acyloxynitroso dienophiles in [4+2] hetero Diels-Alder cycloadditions: mechanistic insights
Calvet, Géraldine,Coote, Susannah C.,Blanchard, Nicolas,Kouklovsky, Cyrille
supporting information; experimental part, p. 2969 - 2980 (2010/06/20)
α-Acyloxynitroso derivatives are a class of heterodienophiles leading to valuable 3,6-dihydro-1,2-oxazines or the corresponding aminoalcohols in good yields. The discovery that a β-oxygenated moiety led to a domino [4+2] cycloaddition/σN-O bond cleavage in the presence of a catalytic amount of Lewis acid was investigated in detail, through kinetic profiling of the reaction both in the absence and presence of a promoter. These studies showed that the role of the Lewis acid was to accelerate the σN-O bond cleavage thereby promoting a highly reproducible sequence. In addition, our preliminary results on an asymmetric version of this domino sequence are reported.
