R. Fernandez et al., ASYMMETRIC-SYNTHESIS OF FUNCTIONALIZED NITROCOMPOUNDS THROUGH MICHAELADDITION OF FORMALDEHYDE SAMP HYDRAZONE TO NITROOLEFINS, Tetrahedron letters, 35(3), 1994, pp. 471-472
Chiral beta-nitrohydrazones 7 can be easily prepared in goad yields an
d diastereoselectivities by non catalyzed Michael addition of formalde
hyde SAMP hydrazone 6 to simple nitroolefins.