3-(Trifluoromethoxy)benzenesulfinic acid sodium salt → Tert-butyl 2-(3-trifluoromethoxy-phenyl)sulfonyl-4,5-dimethyl-5,6,7,8,9,10-hexahydro-7,10-epiminocyclohepta[b]indole-carboxylate

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Reaction Steps

Intermediate 3 was coupled to the product of Example 71, step C following the procedure of Example 71, step D. The crude product was purified by flash column chromatography (SiO2, 8:2 hexanes/ethyl acetate) to give tert-butyl 2-(3-trifluoromethoxy-phenyl)sulfonyl-4,5-dimethyl-5,6,7,8,9,10-hexahydro-7,10-epiminocyclohepta[b]indole-carboxylate (58 mg, 26%) as a light-yellow solid: 1H NMR (CDCl3, 300 MHz) δ 8.02 (br s, 1H), 7.85-7.90 (m, 1H), 7.81 (br s, 1H), 7.50 (t, J=8.1 Hz, 1H), 7.31-7.37 (m, 2H), 5.21 (br s, 1H), 4.72 (br s, 1H), 3.85 (s, 3H), 3.35 (br s, 1H), 2.76 (s, 3H), 2.45 (d, J=15.6 Hz, 1H), 2.24-2.49 (m, 1H), 2.12-2.24 (m, 1H), 1.85-1.96 (m, 1H), 1.57-1.66 (m, 1H), 1.37 (br s, 9H).

Provenance & Evidence