N-Methoxy-N-methylbenzofuran-5-carboxamide → 2,3-Dihydro-benzofuran-5-carboxylic acid methoxy-methyl-amide

Participants

Reaction Steps

A solution of benzofuran-5-carboxylic acid methoxy-methyl-amide (Intermediate P, 235 mg, 1.145 mmol) in ethanol (20 ml) is hydrogenated over 10% Pd on carbon (30×4 mm CatCart®) at 40° C. and 30 bar using the H-Cube Hydrogenator. After 6 hrs the reaction is complete and the reaction mixture is concentrated in vacuo to give an oil; MS m/z=208.1 [M+H]+; H NMR 400.13 MHz (CDCl3)-7.6 (1H, s), 7.55 (1H, d), 7.8 (1H, d), 4.6 (2H, t), 3.6 (3H, s), 3.35 (3H, s), 3.25 (2H, t).

Provenance & Evidence