1,1'-Biphenyl, 4-(bromomethyl)- → 1-(2-Biphenyl-4-yl-1-phenyl-ethyl)-1H-benzotriazole

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A solution of 1-benzyl-1H-1,2,3-benzotriazole (750 mg, 3.6 mmol) in tetrahydrofuran (36 mL) was cooled to −78° C. and treated with n-butyllithium (2.8 mL, 1.6 M in hexanes) dropwise. The reaction mixture was stirred at −78° C. for 10 min and 4-bromomethyl-biphenyl (1.0 g, 4.1 mmol) in tetrahydrofuran (4 mL) was added dropwise. The reaction mixture was stirred at −78° C. for 1 h, quenched with sat. ammonium chloride (100 mL), and extracted with ethyl acetate (150 mL). The organic layer was separated and washed with brine (50 mL), dried with sodium sulfate, filtered, and concentrated to a white solid. This material was triturated with diethyl ether (2×50 mL) to yield the desired product (1.12 g, 83%). LCMS found for C26H22N3 (M+H)+: m/z=376.

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