Reaction #45380

Reaction equation

1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride

1-hydroxybenzotriazole

diisopropylethylamine

dimethylformamide

cyclopropylcarboxylic acid

TFA

TFA

→

N-[[6-[1,6-dihydro-1-methyl-4-(methylamino)imidazo[4,5-d]pyrrolo[2,3-b]pyridin-7-yl]-2-pyridinyl]methyl]-cyclopropanecarboxamide

Solvents

MeOH

H2O

H2O

MeOH

Conditions

Workup

1. 1
   ConcentrationConcentration under pressure
2. 2
   Otherfollowed by purification by flash silica gel chromatography
3. 3
   Otherafforded 0.012 g (50%) of A218 as a yellow solid

Procedure

To a mixture of A215 (0.020 g, 0.065 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.019 g, 0.098 mmol), 1-hydroxybenzotriazole (0.013 g, 0.098 mmol), and diisopropylethylamine (0.034 mL, 0.195 mmol) in anhydrous dimethylformamide (2 mL) was added cyclopropylcarboxylic acid (8.00 μL, 0.098 mmol). The reaction mixture was stirred at room temperature overnight. Concentration under pressure followed by purification by flash silica gel chromatography using a 5% mixture of methanol in dichloromethane afforded 0.012 g (50%) of A218 as a yellow solid. The compound had an HPLC retention time=1.99 min. (Column: Chromolith SpeedROD 4.6×50 mm—4 min.; Solvent A=10% MeOH, 90% H2O, and 0.1% TFA; Solvent B=90% MeOH, 10% H2O, and 0.1% TFA) and a LC/MS M+1=376.40.

Source