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. 2021 Dec 1;122(1):565–788. doi: 10.1021/acs.chemrev.1c00449

Scheme 159. Synthesis of Azaacenes Containing BN Units.

Scheme 159

Reagents and conditions: (a)315 BF3·Et2O, Et3N, DCM, 50 °C; (b)316 malononitrile, Al2O3, toluene, reflux, 12 h.