Ethylenediamine → 1-(cis-2-methyl-cyclohexyl)-3-(5H-pyrrolo[2,3-b]pyrazin-2-yl)-urea

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-(cis-2-methyl-cyclohexyl)-3-[5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl]-urea (0.3 g, 0.7 mmol), tetrabutyl ammonium fluoride (1 M in THF, 4.6 mL, 4.6 mmol) and ethylene diamine (0.46 mL, 4.2 mmol) in 5 mL of N,N-dimethylformamide was stirred at 80° C. for 20 h, then concentrated. The resulting residue was triturated in methanol, and solid was isolated by filtration, washing with ether, and dried to afford 0.060 g (30%) of 1-(cis-2-methyl-cyclohexyl)-3-(5H-pyrrolo[2,3-b]pyrazin-2-yl)-urea as an off-white solid.

Provenance & Evidence