1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 59363380, compound

Participants

Reaction Steps

DIPEA (0.02 mL, 0.11 mmol) was added at RT to a mixture of (1S,3S)-3-{3-[5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-ureido}cyclopentanecarboxylic acid (0.075 g, 0.179 mmol), methylamine hydrochloride (0.024 g, 0.355 mmol), and EDCI (0.051 g, 0.266 mmol) in 1 mL of DCM. The resulting mixture was stirred at RT for 16 hours before being partitioned between H2O and DCM. The aqueous layer was back extracted twice with DCM. The combined organic layers were dried (Na2SO4), filtered, and evaporated. The residue was purified by SiO2 flash chromatography (DCM/MeOH 0 to 10% MeOH) to give 0.06 g of (1S,3S)-3-{3-[5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-ureido}-cyclopentanecarboxylic acid methylamide (76% yield).

Provenance & Evidence