m-Chloroperbenzoic acid → (3,5-bis-trifluoromethyl-benzyl)-(5'-isopropyl-2'-methoxy-4-trifluoromethyl-biphenyl-2-ylmethyl)-[2-(2-methanesulfonyl-ethyl)-2H-tetrazol-5-yl]-amine

Participants

Reaction Steps

(3,5-Bis-trifluoromethyl-benzyl)-(5′-isopropyl-2′-methoxy-4-trifluoromethyl-biphenyl-2-ylmethyl)-[2-(2-methanesulfinyl-ethyl)-2H-tetrazol-5-yl]-amine (129 mg) is dissolved in chloroform (2 ml), and thereto is added m-chloroperbenzoic acid (50 mg) and the mixture is stirred at room temperature overnight. To the reaction solution is added a saturated aqueous sodium bicarbonate solution, and the mixture is extracted with ethyl acetate, and the organic layer is washed with a brine, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (hexane:ethyl acetate=2:1) to give (3,5-bis-trifluoromethyl-benzyl)-(5′-isopropyl-2′-methoxy-4-trifluoromethyl-biphenyl-2-ylmethyl)-[2-(2-methanesulfonyl-ethyl)-2H-tetrazol-5-yl]-amine (81 mg). MS (m/z): 724 [M+H]+

Provenance & Evidence