Boron tribromide → 5-(2,6-Dichloro-4-nitro-phenoxy)-2-hydroxy-N-nonyl-benzamide

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Reaction Steps

To a solution of 5-(2,6-dichloro-4-nitro-phenoxy)-2-methoxy-N-nonyl-benzamide (173 mg, 0.36 mmol) in CH2Cl2 (3 ml) was added a solution of BBr3 (0.72 ml of a 1 M solution in CH2Cl2). The resulting mixture was stirred at RT for 1.5 h then quenched by addition of MeOH (1 ml) and water (10 ml). The resulting mixture was stirred at RT for 30 min then further diluted with 1 M HCl (10 ml) and extracted with CH2Cl2 (3×5 ml). The combined CH2Cl2 extracts were washed with brine, dried over Na2SO4, filtered and concentrated to give the title compound of Step D (168 mg) as a viscous oil. The title product of Step D was used in the next step without further purification. MS (APCl−) Calc.: 468.1. Found: 467.2 (M−1).

Provenance & Evidence