Benzo(b)thiophene-2-carboxylic acid → HCID 45267206, compound

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Reaction Steps

Compound 40i was prepared following Procedure G using 39b (175 mg, 0.551 mmol) and benzo[b]thiophene-2-carboxylic acid (118 mg, 0.661 mmol) to give 40i (263 mg, 64%) after column chromatography. 1H NMR (400 MHz, CD3OD) 0.91-0.97 (t, 3H, J=7.2 Hz), 1.53-1.68 (m, 3H), 2.50-2.63 (m, 7H), 2.78-3.02 (m, 7H), 3.77-3.79 (bs, 4H), 6.55-6.59 (t, 2H, J=8 Hz), 6.89-6.93 (t, 1H, J=8.4 Hz), 7.40-7.46 (m, 2H), 7.61 (s, 1H), 7.85-7.91 (m, 2H). The free base of 40i was converted into its HCl salt. m.p. 131-134° C. Anal. [C28H35N3O2S.2HCl.1.5H2O] C, H, N.

Provenance & Evidence