Sodium Hydroxide → HCID 58909407, compound

Participants

Reaction Steps

The free base (270 mg, 1.24 mmol) of 1-(3-isopropylphenyl) cyclohexanamine hydrochloride 3 is obtained as a colorless oil by neutralization of the salt with 1N NaOH, extraction into ethyl acetate, drying over Na2SO4, and concentration. This is dissolved in 10 mL of CH2Cl2, and to it is added compound 17 (280 mg, 0.73 mmol) and 1.25 g of silica gel. The solvent is removed in vacuo and the reactants on silica are allowed to stand at ambient temperature for three days. The product mixture is eluted from the silica with 10% methanol in CH2Cl2, concentrated, and chromatographed on silica gel, eluting with 4% methanol (containing 2% NH4OH) in CH2Cl2, to afford compound 18 (238 mg, 0.39 mmol, 54%) as a colorless oil: 1H NMR (CDCl3) δ 7.43-7.26 (m, 8 H), 7.12 (m, 1 H), 6.94-6.84 (m, 3 H), 5.09 (s, 2 H), 4.64 (d, J=9 Hz, 1 H), 3.80 (br, 1 H), 3.31 (br, 1 H), 2.92-2.83 (m, 2 H), 2.7 (m, 1 H), 2.37 (m, 2 H), 2.0-1.95 (m, 4 H), 1.67-1.50 (m, 5 H), 1.35 (s+m, 10 H), 1.25 (d, J=7 Hz, 6 H).

Provenance & Evidence