Triethylamine → 5-(6-Amino-pyrimidin-4-yloxy)-2,3-dihydro-indole-1-carboxylic acid [3-(4-isopropylpiperazin-1-ylmethyl)-5-trifluoromethyl-phenyl]-amide

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Reaction Steps

49 mg (0.16 mMol) triphosgene are dissolved in 5 ml ice-cooled CH2Cl2. Then a solution of 149 mg (0.49 mMol) 5-trifluoromethyl-3-(4-isopropylpiperazin-1-ylmethyl)-aniline and 98 μl (0.70 mMol) Et3N in 2 ml CH2Cl2 is added during 5 min. After 3 additional minutes, the mixture is warmed up to rt by a water bath and then a solution of 0.47 mMol 5-(6-amino-pyrimidin-4-yloxy)-2,3-dihydro-1H-indole (Step 20.3) and 65 μl (0.47 mMol) Et3N in 2 ml CH2Cl2 is added during 5 min. After 2 h at rt, the mixture is diluted with sat. Na2CO3 solution/water 1:1 and EtOAc, the aqueous phase separated off and extracted twice with EtOAc. The organic layers are washed with water and brine, dried (Na2SO4) and concentrated. Reversed phase MPLC (Gilson system) gives the title compound: MS: [M+1]+=556; HPLC: AtRet=9.7.

Provenance & Evidence