4-Toluenesulfonyl chloride → 1-[2-(4-Fluorophenyl)-4,4-di(tosylmethyl)cyclopenten-1-yl]-4-(methylsulfonyl)benzene

Participants

Reaction Steps

Under nitrogen, a solution of 2.34 mmol of the crude 1-[2-(4-fluorophenyl)-4,4-di(hydroxymethyl)cyclopenten-1-yl]-4-(methylsulfonyl)benzene (prepared in Step 9) in 8 mL of pyridine at ambient temperature was treated with 1.2 g (6.3 mmol) of p-toluenesulfonyl chloride (tosyl chloride). The resulting solution was stirred at room temperature for 17 hours, concentrated in vacuo, and chromatographed on silca gel to give 1.06 g (66% overall yield from Step 9) of 1-[2-(4-fluorophenyl)-4,4-di(tosylmethyl)cyclopenten-1-yl]-4-(methylsulfonyl)benzene as a colorless solid: NMR (CDCl3) δ 2.46 (s, 6H), 2.73 (s, 3H), 3.04 (s, 3H), 4.05 (s, 4H), 6.85-7.0 (m, 4H), 7.20 (d, J=8 Hz, 2H), 7.34 (d, J=8 Hz, 4H), 7.75 (d, J=8 Hz, 6H).

Provenance & Evidence