Potassium Hydroxide → HCID 58423310, compound

Participants

Reaction Steps

To a stirred solution of methyl 1-(2-chloro-6-formylphenyl)-4-methylpiperidin-3-ylcarbamate (220 mg, 0.71 mmol) (Method 119) in MeOH (3 ml) was added 40% aqueous solution of KOH (10 ml) drop wise, and the resulting mixture was heated at reflux for 16 h. The mixture was allowed to cool to rt, diluted with water, and extracted with DCM. The combined organic extract was dried over anhydrous Na2SO4, filtered, and conc. in vacuo. The resulting residue was purified via silica gel chromatography (100% ethyl acetate to 10% methanol in ethyl acetate) to yield the title compound as a light yellow gum (0.057 g, 31.9%). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.44 (s, 1 H), 7.40 (t, 2 H), 7.07 (t, 1 H), 4.29 (d, 1 H), 3.58 (ddd, 1 H), 3.38 (dd, 1 H), 3.11 (td, 1 H), 2.81 (d, 1 H), 2.20-1.91 (m, 1 H), 1.31-1.14 (m, 1 H), 1.08 (d, 3 H), 0.63-0.37 (m, 1 H).

Provenance & Evidence