5-Aminosalicylic Acid → HCID 71243638, compound

Participants

Reaction Steps

To a mixture of ethyl 4-(((1R,2R)-1-hydroxy-2,3-dihydro-1H,1′H-[2,2′-biinden]-2-yl)methyl)benzoate (11, 200 mg, 0.48 mmol), 5-amino-2-hydroxybenzoic acid (75 mg, 0.48 mmol) and THF (1.0 mL) in a 5 mL microwave vial, was added trimethylaluminium (0.5 mL, 20% solution in toluene) and the mixture irradiated at 100° C. for 5 min. The reaction mixture was quenched with slow addition of 1.5 N HCl (2 mL) and extracted with ethyl acetate (3×15 mL). Organic layer was washed with water (25 mL), brine (25 mL), dried over anhydrous Na2SO4 and evaporated under reduced pressure. The residue purified by preparative HPLC [Kromasil C18 (250×50 mm), flow rate: 40 mL/min, 0.1% TFA in water/MeOH, run time: 40 min] to yield 75 mg (30%) of the title compound as an off white solid.

Provenance & Evidence