Lithium Hydroxide → 4-(3-Cyanophenyl)-1,4,5,6-tetrahydrocyclopenta[b]pyrrole-2-carboxylic acid

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Reaction Steps

The title compound was synthesized from methyl 4-(3-cyanophenyl)-1,4,5,6-tetrahydrocyclopenta[b]pyrrole-2-carboxylate (0.021 g, 0.079 mmol) and lithium hydroxide (0.035 g, 0.83 mmol), according to General Procedure 7. A 1:1 mixture of THF and methanol (2 mL) was used. The resulting product was purified by reverse phase HPLC, eluting with a gradient of 40-80% MeOH: water (with 0.1% formic acid) to afford a light pink solid: 8.8 mg (44% yield). 1H NMR (400 MHz, METHANOL-d4) δ ppm 2.21 (dd, J=6.35, 2.34 Hz, 1H), 2.79 (s, 2H), 2.91-3.02 (m, 1H), 4.26 (s, 1H), 6.52 (s, 1H), 7.42-7.48 (m, 1H), 7.49-7.56 (m, 3H); LCMS (ESI−) 251.2 (M−H); HPLC (UV=100%), (ELSD=100%).

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