Gonzalez, J.; Koontz, J. I.; Myers, W. H.; Hodges, L. M.; Sabat, M.; Nilsson, K. R.; Neely, L. K.; Harman, W. D. Osmium-Promoted Dipolar Cycloadditions with Pyrroles: An Efficient Stereoselective Synthesis of 7-Azanorbornanes. Journal of the American Chemical Society 1995, 117, 3405-3421.
