1. B. Stanovnik, M. Tišler, and J. T. Carlock, Synthesis, 754 (1976).
2. J. T. Carlock, J. S. Bradshaw, B. Stanovnik, and M. Tišler, J. Org. Chem., in press.
3. The following spectral instruments were used. Ir, (potassium bromide) Hilger and Watts H-1200 Mark II; nmr, Varian Associates EM-390, (s = singlet, d = doublet, t = triplet, q = quartet, m = multiplet, b = broad); mass spectra, HP-5982A GC/MS operated at 70 EV interfaced with an HP-5934A data system. Elemental analyses were performed by Eisenhower Microanalytical Laboratories, P. O. Box 635, Holly Hill, Florida 32017. Melting points (uncorrected) were determined on a Thomas-Hoover capillary melting point apparatus.
4. All prior amide spectra have given the acylium ion as the base peak, however on aromatic rings with Inductive disubstitution, the base peak becomes RR'C4H6NH2 from cleavage of the amide bond and subsequent rearrangements. This is readily correlated with Hammet equation constants of substituents. See: Y. S. Nekrasov, P. A. Sharbatyan, R. S. Sagtullin, V. A. Puchkov, A. N. Kost, and N. S. Vul'fson, Izu. Akad. Nauk SSSR, Ser. Khim., 2181 (1969);
5. [Chem. Abstr., 72, 36890r (1970)].