Feng, X., Iwanaga, F., Hu, J. Y., Tomiyasu, H., Nakano, M., Redshaw, C., Elsegood, M. R., & Yamato, T. (2013). An efficient approach to the synthesis of novel pyrene-fused azaacenes. Organic Letters, 15(14), 3594-3597. https://doi.org/10.1021/ol401438a