Aza-dienophile. The ester groups are readily removed from adducts by acid: J. Org. Chem., 26, 4336 (1961); 38, 2043 (1973); 40, 563 (1975).
Useful "NH2 +" synthon for enantioselective amination reactions: J. Am. Chem. Soc., 108, 6394, 6395, 6397 (1986); Tetrahedron Lett., 29, 6765 (1988).
Mitsunobu reaction with alcohols gives a direct route to the corresponding N,N'-di-Boc protected hydrazine derivatives: Tetrahedron Lett., 37, 4327 (1996).
