Hydrochloric Acid → HCID 71657494, compound

Participants

Reaction Steps

Ethyl 7-(6-cyclopropyl-2,3-di-p-tolyl-5H-pyrrolo[2,3-b]pyrazin-5-yl)heptanoate (Step 6) (230 mg, 0.464 mmol) in EtOH (4 ml) was treated with 2M NaOH (0.696 ml, 1.392 mmol) and stirred at room temperature for 16 hours. The reaction mixture was added to water (50 ml) and the pH was adjusted to pH 1 by addition of 2M HCl. The resulting suspension was filtered, washed with water (×3) and dried under vacuum. The resultant residue was dissolved in EtOH (minimal) and excess water added. The resultant aqueous was then extracted with DCM (×3), and the organic solvent removed under reduced pressure. The resultant residue was then taken in diethyl ether, sonicated and the solvent removed under reduced pressure. Further diethyl ether was added, sonicated and the solvent removed under reduced pressure. The resultant residue was dissolved in EtOAc (minimal) and excess iso-hexane was added. The resultant suspension was filtered, the filter cake washed with iso-hexane (×4) and dried to afford the titled compound as a pale yellow solid.

Provenance & Evidence