Hydrochloric Acid → Benzyl 3-(2-amino-6-{[3-fluoro-4-(1H-pyrrolo[2,3-b]pyridin-4-yloxy)phenyl]-amino}pyrimidin-4-yl)piperidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

1.05 g (2.89 mmol) of benzyl 3-(2-amino-6-chloropyrimidin-4-yl)piperidine-1-carboxylate (from example LXXII) and 0.75 g (2.89 mmol) of [3-fluoro-4-(1H-pyrrolo[2,3-b]pyridin-4-yloxy)phenyl]amine (from example XIX) are suspended in 35 ml of water and 4 ml of ethanol. 0.29 ml (3.47 mmol) of 37% strength hydrochloric acid is added. The mixture is stirred at 100° C. for 18 hours. After cooling, the mixture is neutralized using a saturated aqueous sodium bicarbonate solution and extracted three times with ethyl acetate (in each case 30 ml). The organic phase is dried over anhydrous magnesium sulfate and concentrated. The residue is purified on a silica gel column using dichloromethane/methanol 20:1. This gives 1.38 g (86% of theory) of product.

Provenance & Evidence