Diisopropylethylamine → HCID 118115082, compound

Participants

Reaction Conditions

Reaction Steps

(R)-5-(3-Aminopiperidin-1-yl)-3-(4-(1-cyclopentylpiperidin-4-yl)phenylamino)pyrazine-2-carboxamide (436) (50 mg, 0.1 mmol) was dissolved in 4 mL DMF. To it were added DIEA (180 μL, 1.0 mmol) and then methyl 2-bromomethylbenzoate (46 mg, 0.2 mmol) at RT. The reaction temperature was raised to 60° C. and the mixture was stirred for overnight. It was cooled to RT, quenched with 0.5 mL TFA, and directly subjected to reverse phase preparative HPLC using 5 mM HCl (aq) and nest MeCN to isolate the title compound, (R)-3-(4-(1-cyclopentylpiperidin-4-yl)phenylamino)-5-(3-(1-oxoisoindolin-2-yl)piperidin-1-yl)pyrazine-2-carboxamide (450), as HCl salt (19 mg). LC-MS (ESI): m/z (M+1) 580.8. UV: λ=269, 275, 304, 335, 372 nm. Proton NMR (CD3OD): δ 7.84 (1H, d, J=7.5 Hz), 7.69 (1H, s), 7.66-7.58 (2H, m), 7.56-7.52 (3H, m), 7.12 (2H, d, J=8.5 Hz), 4.67-4.57 (3H, m), 4.40-4.30 (2H, m), 3.64 (2H, m), 3.55 (1H, m), 3.27-3.06 (4H, m), 2.76 (1H, m), 2.24-1.72 (18H, m) ppm.

Provenance & Evidence