Diisopropylethylamine → (Z)-5-((2-(4-((((6-(thiophen-3-yl)pyridin-2-yl)methyl)amino)methyl)piperidin-1-yl)pyrimidin-4-yl)methylene)imidazolidine-2,4-dione

Participants

Reaction Steps

A 2 dram round bottomed vial was charged with (Z)-5-((2-(4-(aminomethyl)piperidin-1-yl)pyrimidin-4-yl)methylene)imidazolidine-2,4-dione (17 mg, 0.056 mmol), 6-(thiophen-3-yl)picolinaldehyde (10.64 mg, 0.056 mmol, 1 equiv.), diisopropylethylamine (0.1 mL, 0.573 mmol, 10 equiv.), and DMSO (1 mL). The reaction mixture was shaken for 1 h at room temperature then treated with sodium triacetoxyhydroborate (23.83 mg, 0.112 mmol, 2 equiv.) and DCM (0.5 mL). The reaction mixture was shaken overnight. The sample was then filtered through a 0.45 micron syringe filter. The DMSO solution was purified using reverse phase HPLC (MS-triggered fraction collection) with an acetonitrile/water gradient and trifluoroacetic acid as the modifier. The pure fractions were then concentrated under reduced pressure (Genevac HT-4) to provide the desired product (9.8 mg, 26.7 mg theoretical, 36%). LC-MS m/z 476 (M+1).

Provenance & Evidence