Zagranyarski, Y., Skabeev, A., Ma, Y., Müllen, K., & Li, C. (2016). Facile synthesis of annulated heterocyclic benzo[kl]acridine derivatives via one-pot N-H/C-H coupling. Organic Chemistry Frontiers, 3(11), 1520-1523. doi:10.1039/c6qo00371k.