Lidija Pezdirc, V. Jovanovski, D. Bevk
Apr 18, 2005
Citations
0
Influential Citations
54
Citations
Journal
Tetrahedron
Abstract
Abstract Cycloadditions of (1 Z ,4 R *,5 R *)-4-benzoylamino-5-phenylpyrazolidin-3-on-1-azomethine imines to olefinic dipolarophiles were studied. Stereochemistry of cycloadditions to azomethine imines 3 was found to be controlled by stereodirecting phenyl group at position 3, as well as by the ortho -substituents at the aromatic ring at position 1′. The structures of dipoles and products were confirmed by NMR and X-ray diffraction.