1983-1991

  1. Identification of the Reactive Electronic State in the Photocycloaddition of Alkenes to Cyclic Enones. Schuster, D. I.; Greenberg, M. M.; Nunez, I. M.; Tucker, P. C. J. Org. Chem. 1983, 48, 2615.
  2. 3,4-Dimethylenefuran, and 3,4-Dimethylenethiophene, Heterocyclic Analogues of the Disjoint Non-Kekulé Hydrocarbon Tetramethyleneethane. Stone, K. J.; Greenberg, M. M.; Goodman, J. L.; Peters, K. S.; Berson, J. A. J. Am. Chem. Soc. 1986, 108, 8088.
  3. The First Magic Angle Spinning NMR Spectrum of a Captive Intermediate: Direct Observation of a Singlet Ground State Biradical, 3,4-Dimethylenefuran. Zilm, K. W.; Merrill, R. A.; Greenberg, M. M.; Berson, J. A. J. Am. Chem. Soc. 1987, 109, 1567.
  4. Identity of 3,4-Dimethylenethiophene Reactive Intermediates From Diazene and Bis-Allene Precursors. Correlation of Singlet Biradical Reactivity in the Tetramethyleneethane and Trimethylenemethane Series. Greenberg, M. M.; Blackstock, S. C.; Berson, J. A. Tetrahedron Lett. 1987, 28, 4263.
  5. Two Dimensional Solid-State NMR of a Captive Intermediate: Structure of the Radical Centers in 3,4-Dimethylenethiophene. Zilm, K. W.; Merrill, R. A.; Webb, G. G.; Greenberg, M. M.; Berson, J. A. J. Am. Chem. Soc. 1989, 111, 1533.
  6. Ground State Multiplicities of 3,4-Dimethylenefuran and 3,4-Dimethylenethiophene. Experimental Tests of Ab Initio and Semiempirical Theories of Heteroatom-Bridged Disjoint Biradicals. Greenberg, M. M.; Blackstock, S. C.; Stone, K. J.; Berson, J. A. J. Am. Chem. Soc. 1989, 111, 3671.
  7. Heterocyclic Aromatic Non-Kekulé Molecules. Synthesis and Solution-Phase Chemistry of the Singlet Biradicals 3,4-Dimethylenefuran and 3,4-Dimethylenethiophene. Stone, K. J.; Greenberg, M. M.; Blackstock, S. C.; Berson, J. A. J. Am. Chem. Soc. 1989, 111, 3659.
  8. Structure of the Carrier of the CPMAS 13C NMR Signal Assigned to 3,4-Dimethylenethio-phene. Multiple Position Labeling and Chemical Trapping in Annealed Glasses. Greenberg, M. M.; Blackstock, S. C.; Berson, J. A.; Merrill, R. A.; Duchamp, J. C.; Zilm, K. W. J. Am. Chem. Soc. 1991, 113, 2318.