Hydrochloric Acid → HCID 59762220, compound

Participants

Reaction Steps

To a mixture of 5-amino-4-chloro-2-(1-methyl-piperidin-4-yl)-6-nitro-isoindole-1,3-dione (1.35 g, not pure) and 10% Pd/C (500 mg) was added 2-propanol (20 mL), HCl in dioxane (4 M, 0.1 mL) and then MeOH (230 mL). After it was stirred under atmospheric hydrogen for 1.5 h, the reaction mixture was filtered over Celite. The filtrate was concentrated, diluted with 50% DCM in MeOH, basified with aqueous NH4OH solution (28%) and evaporated. Chromatography of the mixture with mixed solvent of CH2Cl2/MeOH/28% aqueous NH4OH (50:10:1) afforded the title compound (186 mg, 6% for 2 steps). 1H NMR (DMSO-d6) δ 1.51 (m, 2H), 1.90 (m, 2H), 2.29 (m, 2H), 2.81 (m, 2H), 3.80 (m, 1H), 5.61 (br s, 2H, NH2), 5.93 (br s, 2H, NH2), 6.82 (s, 1H, ArH); ESI-MS m/z 309.4 (MH+).

Provenance & Evidence