Figure 7: Chemoselectivity of Ni(II)-catalysed [3+2] cycloaddition.
From: Naked d-orbital in a centrochiral Ni(II) complex as a catalyst for asymmetric [3+2] cycloaddition
(a) Reaction of vinyl ether 5 with 2a, (b) reaction of 1a with (Z)-nitrone 6 and (c) reaction of 1a with E/Z-isomerizable nitrone 7. Reactions were carried out under the conditions shown in the box in Fig. 6.
