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. 2022 Sep 19;28(64):e202201842. doi: 10.1002/chem.202201842

Scheme 2.

Scheme 2

Synthesis of brominated cyclopentannulated tetraazapentacenes 3 ad and 4 ac. Conditions: i) IPrAuNTf2 (10 mol%), DCE, 80 °C, 2 d; ii) PdCl2 (10 mol%), MeCN/CHCl3 (1 : 1), 80 °C, 18 h. Yields in red: gold catalysis; yields in black: palladium catalysis.