[C:1]1([C:7]2[C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:17]([F:20])([F:19])[F:18])[CH:15]=3)[NH:10][C:9](=O)[C:8]=2[C:22]2[NH:26][N:25]=[N:24][N:23]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.P(Cl)(Cl)([Cl:29])=O.C(N(CC)C(C)C)(C)C>C1(C)C=CC=CC=1>[Cl:29][C:9]1[C:8]([C:22]2[NH:26][N:25]=[N:24][N:23]=2)=[C:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[C:16]2[C:11](=[CH:12][CH:13]=[C:14]([C:17]([F:19])([F:18])[F:20])[CH:15]=2)[N:10]=14-Phenyl-3-(1H-tetrazol-5-yl)-6-trifluoromethyl-1H-quinolin-2-one (160 mg, 448 μmol) was twice co-evaporated with toluene (5 ml). Then toluene (5 ml), phosphorus oxychloride (446 mg, 271 μl, 2.91 mmol) and N,N-diisopropylethylamine (72.3 mg, 97.8 μl, 560 μmol) were added and the mixture was heated to 70° C. for 5 h. Then all volatiles were removed and toluene (5 ml) was added and evaporated twice. Then ethanol (5 ml) was added and evaporated. Water and methanol were added to the remaining residue and the solid was filtered off and dried to obtain the title compound (107 mg, 64%) as brown solid. MS (ESI): 374.3 (M−H)−.
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