1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 58169404, compound

Participants

Reaction Conditions

Reaction Steps

A 100 mL round bottomed flask was charged with 5-(5-bromo-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophene-2-carboxylic acid (332.5 mg, 0.82 mmol, 1 eq), N-(2-aminoethyl)acetamide (125.3 mg, 1.23 mol, 1.5 eq), EDCI (313.0 mg, 1.6 mmol, 2 eq), HOBt (221.1 mg, 1.6 mmol, 2 eq) and DIPEA (635.4 mg, 4.9 mmol, 6 equiv) in DMF (5 mL). The mixture was stirred for 12 h at 23° C. and extracted with THF (3×70 mL). The organic layers were dried (Na2SO4), filtered and concentrated. The residue was purified by silica gel column chromatography (PE/EA/MeOH=1:1:0.05 as eluant) to give pale-yellow solid N-(2-acetamidoethyl)-5-(5-bromo-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)thiophene-2-carboxamide (273.8 mg, 68.3%). LC-MS (m/z)=491.1 [M+H]+.

Provenance & Evidence