Cyclopentene → HCID 22676838, compound

Participants

Reaction Steps

Cyclopentene (0.44 mL, 341 mg, 5.0 mmol), palladium acetate (22 mg, 0.10 mmol), tetrabutylammonium bromide (322 mg, 1.0 mmol) and potassium acetate (295 mg, 1.0 mmol) were added to a stirred solution of ethyl 3-(4-tert-butylphenyl)-1-(3-methoxybenzyl)-5-{[(trifluoromethyl)sulfonyl]oxy}-1H-indole-2-carboxylate (Example 125, 570 mg, 1.0 mmol) in N,N-dimethylformamide (5 mL). The reaction was stirred for 48 h and then diluted with ethyl acetate (100 mL). The solution was washed with brine, dried over anhydrous magnesium sulfate, and concentrated in vacuo. Flash chromatography of the residue over silica gel using 6:1 ethyl acetate/hexane gave 230 mg, (45%) of the desired product. The product had: 1H NMR (300 MHz, acetone-D6) δ 7.49-7.56 (m, 3 H), 7.37-7.43 (m, 3 H), 7.17-7.23 (m, 2 H), 6.68-6.92 (m, 3 H), 4.09 (q, 3 H), 3.92-4.01 (m, 1 H), 3.75 (s, 3 H), 2.31-2.50 (m, 3 H), 1.62-1.77 (m, 1 H), 1.39 (s, 9 H), 0.98 (t, 3 H).

Provenance & Evidence