2-Chloroanthraquinone → HCID 59653499, compound

Participants

Reaction Steps

Inv-A46, 2-(4-methylphenyl)-9,10-di-2-naphthalenylanthracene was prepared according to equation 1-equation 3. 2-Bromonaphthalene (9.2 g, 44.4 mmol) was dissolved in dry THF (118 ml) and cooled to −78° C. t-BuLi (1.7 M, 52.3 g, 89 mmol) was added in dropwise manner over 5 min, then the reaction was stirred at this temperature for another 5 min. Upon the addition of 2-chloroanthraquinone (4.3 g, 17.8 mmol), the reaction was removed from the acetone-dry ice bath and stirred at room temperature overnight. The reaction mixture was added to aqueous ammonium chloride solution and the product was extracted with methylene chloride. The organic phase was dried with magnesium sulfate, filtered, and concentrated. Purification by crystallization (85% ether/heptane) gave Int-1 (eq. 1).

Provenance & Evidence