Pienkos, J. A.; Knisely, A. T.; MacLeod, B. L.; Myers, J. T.; Shivokevich, P. J.; Teran, V.; Sabat, M.; Myers, W. H.; Harman, D. Double Protonation of Amino-Substituted Pyridine and Pyrimidine Tungsten Complexes: Friedel–Crafts-like Coupling to Aromatic Heterocycles. Organometallics 2014, 33, 5464-5469.