With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.111795-43-8,(R)-(+)-3,3′-Dibromo-1,1′-bi-2-naphthol,as a common compound, the synthetic route is as follows.
General procedure: Unless stated otherwise, the reaction was performed in a flamedriedflask. A mixture of BOPHY 1a (25 mg, 0.09 mmol, 1 mol equiv.)and aluminum chloride (59 mg, 0.44 mmol, 5 mol equiv.) in dry CH2Cl2(DCM, 5 mL) was refluxed under argon atmosphere until reactioncompletion (reaction monitored by TLC). The mixture was cooled downto room temperature and, then, a solution of (R)-BINOL ((R)-1,1?-binapht-2-ol, 101 mg, 0.35 mmol, 4 mol equiv.) in anhydrous acetonitrile(2 mL) was added dropwise. The resulting mixture was stirred at r.t. foradditional 6 h. After filtration and solvent evaporation under reducedpressure, the obtained residue was purified by flash chromatography(hexane/DCM 7:3) to afford 1b (24 mg, 35%) as a yellow solid.
111795-43-8 (R)-(+)-3,3′-Dibromo-1,1′-bi-2-naphthol 10765693, acatalyst-ligand compound, is more and more widely used in various.
Reference£º
Article; Sola-Llano; Jimenez; Avellanal-Zaballa; Johnson; Cabreros; Moreno; Maroto; Muller; Banuelos; Cerdan; Garcia-Moreno; Moya, S. de la; Dyes and Pigments; vol. 170; (2019);,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI