Diisopropylethylamine → HCID 66920711, compound

Participants

Reaction Steps

In a 20 mL vial a solution of Example 104A (32.5 mg, 0.16 mmol) dissolved in N,N-dimethylacetamide (0.8 mL) was added, followed by the addition of O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium tetrafluoroborate (50.4 mg, 0.16 mmol) dissolved in N,N-dimethylacetamide (0.8 mL). Then, 2-(4-benzylpiperazino)ethan-1-amine (41.3 mg, 0.19 mmol) dissolved in N,N-dimethylacetamide (0.6 mL) was added followed by the addition of diisopropyl ethyl amine (57.9 uL, 0.31 mmol) dissolved in N,N-dimethylacetamide (0.8 mL). The mixture was shaken at room temperature overnight. The reaction was checked by LC/MS and concentrated to dryness. The residue was dissolved in 1:1 dimethyl sulforxide/methanol and purified by reverse phase HPLC (0-70% CH3CN in 10 mM aq. ammonium acetate) to give the titled compound. 1H NMR (500 MHz, DMSO-d6) δ ppm 1.33 (t, 3H) 2.19-2.51 (m, 9H) 3.14-3.20 (m, 1H) 3.35 (t, 2H) 3.42-3.49 (m, 2H) 4.41-4.49 (m, 2H) 6.97-7.11 (m, 1H) 7.19-7.44 (m, 5H); MS (ESI) positive ion 409 (M+H).

Provenance & Evidence