Tert-butyl(2-methoxy-5-nitrophenoxy)dimethylsilane → 3-[(Tert-butyldimethylsilyl)oxy]-4-methoxyaniline

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Reaction Steps

A mixture of tert-butyl-(2-methoxy-5-nitrophenoxy)dimethylsilane (3.0 g, 10.6 mmol) and 5% Pd—C (0.3 g) in 30 mL of ethyl acetate was hydrogenated under 50 psi of hydrogen gas for 14 hours. The mixture was filtered through Celite and the filtrate was evaporated. The residue was chromatographed using a hexanes-ethyl acetate gradient, eluting 2.0 g of the product at 85:15 hexanes-ethyl acetate, in 74% yield: 1H NMR (CDCl3) δ 0.15 (s, 6H), 0.99 (s, 9H), 3.37 (br, 2H), 3.72 (s, 3H), 6.23-6.29 (m, 2H), 6.68 (d, J=8.1 Hz, 1H).

Provenance & Evidence