The asymmetric1,3-dipolarcycloaddition of azomethine imines to allyl alcohol was achieved by utilizing diisopropyl (R,R)-tartrate as a chiral auxiliary to afford the corresponding optically activ...
The catalytic regio- and enantioselective 1,3-dipolar cycloaddition of azomethine imines to allyl alcohol was achieved by utilizing diisopropyl (R,R)-tartrate as a chiral auxiliary to afford the corresponding optically active trans-pyrazolidines with enantioselectivities up to 93% ee. Addition of MgBr2 was crucial to realize reproducible high enantioselectivity.