1-Methylpiperazine → HCID 69202712, compound

Participants

Reaction Steps

A mixture of Example 1094D (68 mg, 0.16 mmol), N-cyclohexylcarbodiimide-N′-methyl polystyrene (1.0 g, 1.28 mmol) and 1-hydroxybenzotriazole hydrate (44 mg, 0.33 mmol) in (2:1) dichloromethane/N,N-dimethylacetamide (10 mL) was agitated for about 15 min. 1-Methylpiperazine (77 mg, 0.77 mmol) was added, the mixture was agitated at room temperature for about 18 h, filtered and concentrated under vacuum. The residue was purified by flash column chromatography on silica gel using dichloromethane/methanol/ammonium hydroxide (100:8:0.1) as the mobile phase to provide the title compound. 1H NMR (500 MHz, DMSO-d6): δ 2.23 (s, 3H), 2.39 (m, 4H), 3.40 (m, 2H), 3.63 (m, 2H), 3.97 (s, 2H), 5.09 (s, 2H), 7.03 (m, 3H), 7.38 (m, 2H), 7.80 (s, 1H), 8.01 (m, 2H), 8.41 (s, 1H), 13.41 (s, 1H).MS (ESI): m/z 496 (M+H)+.

Provenance & Evidence