Toluene → HCID 86639120, compound

Participants

Reaction Steps

30 mg (0.046 mmole) of tert-butyl 3-[5-ethyl-6-[4-(5,6,7,8-tetrahydro-(1,8)naphthyridin-2-yl)-piperidin-1-yl]-pyrimidin-4-ylamino]-2-[3-(2-nitrophenyl)-ureido]-propionate in 3 ml of dichloromethane with 0.5 ml of trifluoroacetic acid is stirred at ambient temperature until the starting product disappears according to TLC (silica gel, eluent: CH2Cl2-MeOH—H2O—AcOH 90-10-1-1). Toluene is added and the reaction mixture is evaporated to dryness under reduced pressure (2 kPa). The residue is solubilized in the minimum amount of dichloromethane then poured into diisopropyl ether. The precipitate is filtered. 35 mg of expected product is obtained in the form of a yellow solid.

Provenance & Evidence