Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [OH:1][CH2:2][C:3]1[CH:4]=[N:5][CH:6]=[C:7]2[C:12]=1[N:11]=[CH:10][CH:9]=[CH:8]2.C1C=CC(P([N:27]=[N+:28]=[N-:29])(C2C=CC=CC=2)=O)=CC=1.[CH2:30]1[CH2:40][CH2:39][N:38]2[C:33](=[N:34][CH2:35][CH2:36][CH2:37]2)[CH2:32][CH2:31]1>CCOC(C)=O>[OH:1][CH2:2][C:3]1[CH:4]=[N:5][CH:6]=[C:7]2[C:12]=1[N:11]=[CH:10][CH:9]=[CH:8]2.[N:27]([CH2:30][C:40]1[CH:39]=[N:38][CH:37]=[C:36]2[C:35]=1[N:34]=[CH:33][CH:32]=[CH:31]2)=[N+:28]=[N-:29]
Reactant: [N-]=[N+]=NP(=O)(c1ccccc1)c1ccccc1
Reactant: C1CCC2=NCCCN2CC1
Agent: OCc1cncc2cccnc12
Solvent: CCOC(C)=O
Product: [N-]=[N+]=NCc1cncc2cccnc12
Temperature: 25 °C
Reaction time: 18 h

Procedure:
To a solution of 0.93 g (5.8 mmol) 8-hydroxymethyl-1,6-napthyridine in 20 mL TBF was added 1.5 mL (7 mmol) DPPA and 1.2 mL (6.7 mmol) DBU. The reaction mixture was allowed to stir at room temperature 18 hours, then another 0.3 mL DPPA and 0.25 mL DBU were added and the reaction mixture heated to 50° C. for 8 hours then cooled to room temperature then another 0.3 mL DPPA and 0.25 mL DBU were added and the reaction mixture was allowed to stir 18 more hours at room temperature. The resulting solution was then diluted with 200 L EtOAc, washed with saturated NaHCO3 solution, and brine, dried over Na2SO4, filtered and concentrated in vacuo. Purification by flash chromatography (40×120 mm silica gel, linear gradient 2-15% MeOH:CH2Cl2) yielded 8-hydroxymethyl-1,6-napthyridine and 8-azidomethyl-1,6-napthyridine. 1H NMR (CDCl3, 400 MHz) δ 9.30 (s, 1H); 9.16 (dd, 1H, J=4.3 and 1.8 Hz); 8.78 (s, 1H); 8.35 (dd, 1H, J=8.3 and 1.74 Hz); 7.61 (dd, 1H, J=8.3 and 4.3 Hz); 5.00 (s, 2H).
Reaction SMILES: S(Cl)([Cl:3])=O.[N:5]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH:8]=[C:7]([C:15]([OH:17])=O)[CH:6]=1>>[N:5]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[CH:8]=[C:7]([C:15]([Cl:3])=[O:17])[CH:6]=1
Reactant: O=C(O)c1cnc2ccccc2c1
Reactant: O=S(Cl)Cl
Product: O=C(Cl)c1cnc2ccccc2c1
Temperature: 25 °C

Procedure:
A 300 ml eggplant-shaped flask was equipped with a Dimroth condenser, a calcium chloride tube and a dropping funnel, and in the flask, 0.6 mol of thionyl chloride was slowly dropped to 0.1 mol of 3-quinolylcarboxylic acid with stirring at room temperature. After completion of the dropping, the resulting mixture was stirred continuously for about 1 hour on an oil bath at an oil bath temperature of 65° C. Thereafter, the excess thionyl chloride was removed under a reduced pressure to obtain 3-quinolylcarboxylic acid chloride.
Reaction SMILES: [Cl:1][C:2]1[C:3]2[N:4]([C:8]([CH:11]3[CH2:14][C:13](=[O:15])[CH2:12]3)=[N:9][CH:10]=2)[CH:5]=[CH:6][N:7]=1.[Br:16]N1C(=O)CCC1=O.O>CN(C=O)C>[Br:16][C:10]1[N:9]=[C:8]([CH:11]2[CH2:12][C:13](=[O:15])[CH2:14]2)[N:4]2[CH:5]=[CH:6][N:7]=[C:2]([Cl:1])[C:3]=12
Reactant: O=C1CC(c2ncc3c(Cl)nccn23)C1
Reactant: O=C1CCC(=O)N1Br
Solvent: O
Solvent: CN(C)C=O
Product: O=C1CC(c2nc(Br)c3c(Cl)nccn23)C1
Temperature: -4 °C
Reaction time: 0.08 h

Procedure:
3-(8-Chloroimidazo[1,5-a]pyrazin-3-yl)cyclobutanone (47.7 g, 215 mmol) was dissolved in DMF (200 mL) under an atmosphere of nitrogen and cooled to −4° C. N-Bromosuccinimide (40.3 g, 226 mmol) was dissolved in DMF (140 mL) and slowly added to the reaction mixture. After 5 min, water (400 mL) was added and the resulting solid isolated by filtration and washed with solid with water to give the title compound. 1H NMR (DMSO-d6, 400 MHz): δ 3.45-3.53 (m, 2H), 3.58-3.67 (m, 2H), 4.08-4.16 (m, 1H), 7.45 (d, 1H, J=5.2 Hz) and 8.30 (d, 1H, J=4.8 Hz).
Reaction SMILES: [NH2:1][C:2]1[CH:23]=[CH:22][C:5]([O:6][C:7]2[CH:8]=[CH:9][C:10]3[N:11]([CH:13]=[C:14]([NH:16][C:17]([CH:19]4[CH2:21][CH2:20]4)=[O:18])[N:15]=3)[CH:12]=2)=[CH:4][CH:3]=1.[F:24][C:25]1[CH:30]=[CH:29][C:28]([N:31]2[CH:36]=[CH:35][CH:34]=[C:33]([C:37](O)=[O:38])[C:32]2=[O:40])=[CH:27][CH:26]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N(CC)C(C)C)(C)C>CN(C)C(=O)C>[CH:19]1([C:17]([NH:16][C:14]2[N:15]=[C:10]3[CH:9]=[CH:8][C:7]([O:6][C:5]4[CH:22]=[CH:23][C:2]([NH:1][C:37]([C:33]5[C:32](=[O:40])[N:31]([C:28]6[CH:27]=[CH:26][C:25]([F:24])=[CH:30][CH:29]=6)[CH:36]=[CH:35][CH:34]=5)=[O:38])=[CH:3][CH:4]=4)=[CH:12][N:11]3[CH:13]=2)=[O:18])[CH2:20][CH2:21]1
Reactant: O=C(O)c1cccn(-c2ccc(F)cc2)c1=O
Reactant: Nc1ccc(Oc2ccc3nc(NC(=O)C4CC4)cn3c2)cc1
Agent: CN(C)C(On1nnc2cccnc21)=[N+](C)C
Agent: F[P-](F)(F)(F)(F)F
Solvent: CCN(C(C)C)C(C)C
Solvent: CC(=O)N(C)C
Product: O=C(Nc1ccc(Oc2ccc3nc(NC(=O)C4CC4)cn3c2)cc1)c1cccn(-c2ccc(F)cc2)c1=O
Yield: 71.1 %

Procedure:
Using N-[6-(4-aminophenoxy)imidazo[1,2-a]pyridin-2-yl]cyclopropanecarboxamide (150 mg, 0.486 mmol), N,N-dimethylacetamide (3.0 mL), 1-(4-fluorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxylic acid (170 mg, 0.729 mmol), HATU (277 mg, 0.729 mmol) and N,N-diisopropylethylamine (127 μL, 0.729 mmol) and in the same manner as in Example 10, the title compound (181 mg, 71%) was obtained as a white solid.
Reaction SMILES: Cl[C:2]1[C:11]2[C:6](=[CH:7][C:8]([O:15][CH2:16][CH3:17])=[C:9]([O:12][CH2:13][CH3:14])[CH:10]=2)[N:5]=[CH:4][C:3]=1[C:18]#[N:19].[NH2:20][C:21]1[CH:22]=[C:23]2[C:28](=[O:29])[NH:27][C:25](=[O:26])[C:24]2=[CH:30][CH:31]=1.C(=O)([O-])[O-].[Na+].[Na+]>C(O)C>[O:26]=[C:25]1[C:24]2[C:23](=[CH:22][C:21]([NH:20][C:2]3[C:11]4[C:6](=[CH:7][C:8]([O:15][CH2:16][CH3:17])=[C:9]([O:12][CH2:13][CH3:14])[CH:10]=4)[N:5]=[CH:4][C:3]=3[C:18]#[N:19])=[CH:31][CH:30]=2)[C:28](=[O:29])[NH:27]1
Reactant: CCOc1cc2ncc(C#N)c(Cl)c2cc1OCC
Reactant: Nc1ccc2c(c1)C(=O)NC2=O
Agent: O=C([O-])[O-]
Agent: [Na+]
Solvent: CCO
Product: CCOc1cc2ncc(C#N)c(Nc3ccc4c(c3)C(=O)NC4=O)c2cc1OCC
Temperature: 100 °C
Yield: 59.8 %

Procedure:
A solution of 400 mg (1.44 mM) of 4-chloro-6,7-diethoxy-quinoline-3-carbonitrile and 305 mg (1.88 mM) of 4-Aminophthalimide in 10 ml of ethanol was refluxed for 3 hours. To the warm solution was added 1 ml of 1M sodium carbonate and the sample was heated for 5 minutes at 100° C., then poured into 300 ml of ice water. The solid was collected, washed with water followed by ether and dried under vacuum at 80° C. to yield 348 mg of 4-(1,3-Dioxo-2,3-dihydro-1H-isoindol-5-ylamino)-6,7-diethoxy-quinoline-3-carbonitrile as a yellow solid: mass spectrum (electrospray, m/e): M+H 402.9, mp=248-251° C.
Reaction SMILES: [C:1]1([S:7]([N:10]2[C:14]3=[N:15][CH:16]=[CH:17][CH:18]=[C:13]3[CH:12]=[C:11]2[C:19](OS(C2C=CC(C)=CC=2)(=O)=O)=[CH:20][CH:21]2[CH2:25][CH2:24][CH2:23][CH2:22]2)(=[O:9])=[O:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:37]([C:40]1[CH:45]=[CH:44][C:43](B(O)O)=[CH:42][CH:41]=1)(=[O:39])[CH3:38].C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.C(OCC)(=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[C:1]1([S:7]([N:10]2[C:14]3=[N:15][CH:16]=[CH:17][CH:18]=[C:13]3[CH:12]=[C:11]2[C:19]([C:43]2[CH:44]=[CH:45][C:40]([C:37](=[O:39])[CH3:38])=[CH:41][CH:42]=2)=[CH:20][CH:21]2[CH2:25][CH2:24][CH2:23][CH2:22]2)(=[O:9])=[O:8])[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1
Reactant: CC(=O)c1ccc(B(O)O)cc1
Reactant: Cc1ccc(S(=O)(=O)OC(=CC2CCCC2)c2cc3cccnc3n2S(=O)(=O)c2ccccc2)cc1
Agent: Cl[Pd](Cl)([P](c1ccccc1)(c1ccccc1)c1ccccc1)[P](c1ccccc1)(c1ccccc1)c1ccccc1
Agent: O=C([O-])[O-]
Agent: [Na+]
Solvent: CCOC(C)=O
Solvent: C1COCCO1
Product: CC(=O)c1ccc(C(=CC2CCCC2)c2cc3cccnc3n2S(=O)(=O)c2ccccc2)cc1
Yield: 88.5 %

Procedure:
To a mixture of toluene-4-sulfonic acid-1-(1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-vinyl ester (prepared as in Example 43, 0.5 g, 0.96 mmol), 4-acetylphenylboronic acid (394 mg, 2.4 mmol) and dichlorobis(triphenylphosphine)palladium (II) (67 mg, 0.1 mmol) in dioxane (8 mL) was added an aqueous sodium carbonate solution (2 M, 1.2 mL). The resulting mixture was subjected to microwave irradiation for 2 h at 100° C. The mixture was diluted with ethyl acetate (200 mL), washed with a saturated aqueous sodium bicarbonate solution (2×50 mL), brine, dried over anhydrous sodium sulfate and then concentrated in vacuo. Purification by flash silica gel chromatography (silica gel from QingDao, 200-300 mesh, glass column from Shanghai SD company, 30% ethyl acetate/hexanes) afforded 1-{4-[1-(1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-2-yl)-2-cyclopentyl-vinyl]-phenyl}-ethanone (400 mg, 89%) as a white solid: LC/MS m/e calcd for C28H26N2O3S [M+H]+ 471.60, observed 471.0.
Reaction SMILES: [C:1]1([C:7]2[NH:8][C:9](=[O:24])[N:10]([S:12]([C:15]3[CH:16]=[C:17]4[C:21](=[CH:22][CH:23]=3)[NH:20][CH2:19][CH2:18]4)(=[O:14])=[O:13])[CH:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.N1C=CC=CC=1.[N+:31]([C:34]1[CH:42]=[CH:41][C:37]([C:38](Cl)=[O:39])=[CH:36][CH:35]=1)([O-:33])=[O:32]>ClCCl>[C:1]1([C:7]2[NH:8][C:9](=[O:24])[N:10]([S:12]([C:15]3[CH:16]=[C:17]4[C:21](=[CH:22][CH:23]=3)[N:20]([C:38](=[O:39])[C:37]3[CH:36]=[CH:35][C:34]([N+:31]([O-:33])=[O:32])=[CH:42][CH:41]=3)[CH2:19][CH2:18]4)(=[O:14])=[O:13])[CH:11]=2)[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=1
Reactant: O=C(Cl)c1ccc([N+](=O)[O-])cc1
Reactant: O=c1[nH]c(-c2ccccc2)cn1S(=O)(=O)c1ccc2c(c1)CCN2
Solvent: c1ccncc1
Solvent: ClCCl
Product: O=C(c1ccc([N+](=O)[O-])cc1)N1CCc2cc(S(=O)(=O)n3cc(-c4ccccc4)[nH]c3=O)ccc21
Temperature: 25 °C
Reaction time: 5 h
Yield: 92.7 %

Procedure:
4-Phenyl-1-(indoline-5-sulfonyl)-2-imidazolone (300 mg, 0.88 mmol) prepared in Preparation 3 was suspended in 10 ml of dichloromethane. Then, pyridine (85 μl, 1.05 mmol) and 4-nitrobenzoyl chloride (163 mg, 0.88 mmol) were added thereto one after another. The resulting reaction mixture was stirred at room temperature under nitrogen atmosphere for 5 hours while the reaction being monitored by TLC. After the reaction was completed, the whole mixture was diluted with dichloromethane, washed with brine, dried over anhydrous magnesium sulfate, concentrated, and finally purified by silica gel column chromatography (eluent:dichloromethane/methanol=15/1, v/v) to afford 400 mg of the title compound as a yellow solid.
Reaction SMILES: [CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[N:8]([CH3:12])[CH:7]=[C:6]2[C:13]1[N:23]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:31])([CH3:30])[CH3:29])[C:16]2=[N:17][CH:18]=[C:19]([CH2:21][NH2:22])[N:20]=[C:15]2[CH:14]=1.N1C=CC=CC=1.[C:38](Cl)(=[O:45])[C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1>C1COCC1.C([O-])([O-])=O.[Na+].[Na+]>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[N:8]([CH3:12])[CH:7]=[C:6]2[C:13]1[N:23]([CH2:24][O:25][CH2:26][CH2:27][Si:28]([CH3:30])([CH3:29])[CH3:31])[C:16]2=[N:17][CH:18]=[C:19]([CH2:21][NH:22][C:38](=[O:45])[C:39]3[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=3)[N:20]=[C:15]2[CH:14]=1
Reactant: COc1ccc2c(c1)c(-c1cc3nc(CN)cnc3n1COCC[Si](C)(C)C)cn2C
Reactant: O=C(Cl)c1ccccc1
Agent: O=C([O-])[O-]
Agent: [Na+]
Solvent: C1CCOC1
Solvent: c1ccncc1
Product: COc1ccc2c(c1)c(-c1cc3nc(CNC(=O)c4ccccc4)cnc3n1COCC[Si](C)(C)C)cn2C
Temperature: 60 °C
Reaction time: 0.33 h
Yield: 77.8 %

Procedure:
(6-(5-Methoxy-1-methyl-1H-indol-3-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl)methanamine (0.095 g, 0.28 mmol, Example #20, Step G) in THF (5 mL) was treated with pyridine (0.026 ml, 0.33 mmol) and benzoyl chloride (0.033 ml, 0.28 mmol). The mixture was stirred for about 20 min at about 60° C. and cooled to ambient temperature, diluted with aqueous Na2CO3 (15 mL), and extracted with EtOAc (20 mL). The organic solution was dried over anhydrous MgSO4, filtered, and concentrated to give N-((6-(5-methoxy-1-methyl-1H-indol-3-yl)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazin-2-yl)methyl)benzamide (0.118 g, 100%): LC/MS (Table 2, Method d) Rt=1.64 min; MS m/z: 542 (M+H)+.
Reaction SMILES: [Cl:1][C:2]1[CH:34]=[CH:33][C:5]([CH2:6][O:7][C:8](=[O:32])[N:9]([CH2:30][CH3:31])[CH2:10][C:11]2[CH:16]=[C:15]([C:17]([F:20])([F:19])[F:18])[CH:14]=[CH:13][C:12]=2B2OC(C)(C)C(C)(C)O2)=[CH:4][CH:3]=1.[CH3:35][O:36][C:37](=[O:47])[CH2:38][C:39]1[CH:44]=[C:43]([Cl:45])[CH:42]=[C:41](Br)[CH:40]=1>>[CH3:35][O:36][C:37](=[O:47])[CH2:38][C:39]1[CH:40]=[C:41]([C:12]2[CH:13]=[CH:14][C:15]([C:17]([F:18])([F:20])[F:19])=[CH:16][C:11]=2[CH2:10][N:9]([C:8]([O:7][CH2:6][C:5]2[CH:4]=[CH:3][C:2]([Cl:1])=[CH:34][CH:33]=2)=[O:32])[CH2:30][CH3:31])[CH:42]=[C:43]([Cl:45])[CH:44]=1
Reactant: CCN(Cc1cc(C(F)(F)F)ccc1B1OC(C)(C)C(C)(C)O1)C(=O)OCc1ccc(Cl)cc1
Reactant: COC(=O)Cc1cc(Cl)cc(Br)c1
Product: CCN(Cc1cc(C(F)(F)F)ccc1-c1cc(Cl)cc(CC(=O)OC)c1)C(=O)OCc1ccc(Cl)cc1

Procedure:
Prepared according to the procedure described in Example 1, Step 4, using the following starting materials: ethyl-[2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-5-trifluoromethyl-benzyl]-carbamic acid 4-chloro-benzyl ester and (3-bromo-5-chloro-phenyl)-acetic acid methyl ester.
Reaction SMILES: [F:1][C:2]([F:13])([F:12])[C:3]1[CH:4]=[C:5]([C@H:9]([NH2:11])[CH3:10])[CH:6]=[CH:7][CH:8]=1.[NH2:14][C:15]1[N:20]=[C:19]([C:21](O)=[O:22])[CH:18]=[CH:17][N:16]=1>>[NH2:14][C:15]1[N:20]=[C:19]([C:21]([NH:11][C@@H:9]([C:5]2[CH:6]=[CH:7][CH:8]=[C:3]([C:2]([F:12])([F:13])[F:1])[CH:4]=2)[CH3:10])=[O:22])[CH:18]=[CH:17][N:16]=1
Reactant: C[C@@H](N)c1cccc(C(F)(F)F)c1
Reactant: Nc1nccc(C(=O)O)n1
Product: C[C@@H](NC(=O)c1ccnc(N)n1)c1cccc(C(F)(F)F)c1
Yield: 72 %

Procedure:
The title compound is prepared in 72% yield (161 mg, a white solid) from (R)-1-(3-(trifluoromethyl)phenyl)ethanamine (136 mg, 0.72 mmol) and 2-aminopyrimidine-4-carboxylic acid (100 mg, 0.72 mmol) by the similar manner in Step-1 of Example 8.
Reaction SMILES: Cl[C:2]1[CH:7]=[C:6]([C:8]([F:11])([F:10])[F:9])[N:5]=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=2)[N:3]=1.[CH3:18][O:19][C:20]1[CH:21]=[CH:22][C:23]([CH3:27])=[C:24]([CH:26]=1)[NH2:25]>>[CH3:18][O:19][C:20]1[CH:21]=[CH:22][C:23]([CH3:27])=[C:24]([CH:26]=1)[NH:25][C:2]1[CH:7]=[C:6]([C:8]([F:11])([F:10])[F:9])[N:5]=[C:4]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][N:13]=2)[N:3]=1
Reactant: COc1ccc(C)c(N)c1
Reactant: FC(F)(F)c1cc(Cl)nc(-c2ccccn2)n1
Product: COc1ccc(C)c(Nc2cc(C(F)(F)F)nc(-c3ccccn3)n2)c1

Procedure:
The title compound was prepared from a mixture of 4-chloro-2-(2-pyridinyl)-6-(trifluoromethyl)pyrimidine (25 mg, 0.096 mmol) and 5-methoxy-2-methylaniline (20 mg, 0.144 mmol) similar to Example 92 and isolated as a yellow solid (18 mg, 52%). 1H NMR (CDCl3): 8.85–8.82 (m, 1H), 8.59–8.56 (m, 1H), 7.90–7.84 (m, 1H), 7.45–7.40 (m, 2H), 7.24 (d, J=8.1 Hz, 1H), 6.87 (s, 1H), 6.83 (dd, J=2.6, 8.3 Hz, 1H), 6.69 (s, 1H), 3.81 (s, 3H), 2.20 (s, 3H).
Reaction SMILES: [CH3:1][C:2]([C:4]1[C:9]([F:10])=[CH:8][CH:7]=[CH:6][C:5]=1[F:11])=[O:3].BrBr.S([O-])([O-])(=O)=[O:15].[Na+].[Na+].C(=O)([O-])O.[Na+]>CS(C)=O.ClCCl>[F:11][C:5]1[CH:6]=[CH:7][CH:8]=[C:9]([F:10])[C:4]=1[C:2](=[O:3])[CH:1]=[O:15]
Reactant: O=S(=O)([O-])[O-]
Reactant: CC(=O)c1c(F)cccc1F
Agent: BrBr
Agent: O=C([O-])O
Agent: [Na+]
Solvent: CS(C)=O
Solvent: ClCCl
Product: O=CC(=O)c1c(F)cccc1F
Temperature: 80 °C

Procedure:
5 g of 2,6-difluoroacetophenone are placed in 13.6 ml of DMSO, and 2.7 ml of bromine (8.8M in water) are added dropwise, the reaction temperature rising from room temperature to 40° C. When the addition of bromine is complete, the mixture is heated at 80° C. for 30 min. After cooling to room temperature, the reaction mixture is poured into 100 ml of dichloromethane; with stirring, sodium sulfate and solid sodium hydrogen carbonate are added to the solution, filtration is carried out and the reaction mixture is concentrated using a rotary evaporator. The crude product is subjected to flash chromatography with dichloromethane. In this way (2,6-difluorophenyl)-oxoacetaldehyde is obtained in the form of a colourless viscous oil.
Reaction SMILES: [Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:13]=[C:12]([NH2:14])[NH:11][N:10]=2)[CH:5]=[CH:6][C:7]=1[Cl:8].C([N:18]1[C:26]2[C:21](=[CH:22][C:23]([C:27](=O)[CH2:28][C:29](OCC)=[O:30])=[CH:24][CH:25]=2)[CH:20]=[N:19]1)(=O)C.CC1C=CC(S(O)(=O)=O)=CC=1>CCCCO>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:13]=[C:12]3[NH:14][C:27]([C:23]4[CH:22]=[C:21]5[C:26](=[CH:25][CH:24]=4)[NH:18][N:19]=[CH:20]5)=[CH:28][C:29](=[O:30])[N:11]3[N:10]=2)[CH:5]=[CH:6][C:7]=1[Cl:8]
Reactant: CCOC(=O)CC(=O)c1ccc2c(cnn2C(C)=O)c1
Reactant: Nc1nc(-c2ccc(Cl)c(Cl)c2)n[nH]1
Agent: Cc1ccc(S(=O)(=O)O)cc1
Solvent: CCCCO
Product: O=c1cc(-c2ccc3[nH]ncc3c2)[nH]c2nc(-c3ccc(Cl)c(Cl)c3)nn12
Temperature: 130 °C
Reaction time: 36 h
Yield: 16.6 %

Procedure:
To a solution of 3-(3,4-dichlorophenyl)-1H-1,2,4-triazol-5-amine (100 mg, 0.44 mmol) in n-BuOH (1 ml) was added ethyl 3-(1-acetyl-1H-indazol-5-yl)-3-oxopropanoate (300 mg, 1.00 mmol) and TsOH (5 mg, 0.03 mmol), and the resulting mixture was stirred for 36 h at 130° C. The solids were collected by filtration and washed with methanol (10 ml) to afford 2-(3,4-dichlorophenyl)-5-(1H-indazol-5-yl)-[1,2,4]triazolo[1,5-α]pyrimidin-7(4H)-one as a light yellow solid (29 mg, 17%).
Reaction SMILES: C(N1C=CN=C1)(N1C=CN=C1)=O.[NH2:13][C:14]1[C:22]([N+:23]([O-:25])=[O:24])=[CH:21][C:20]([Br:26])=[CH:19][C:15]=1[C:16](O)=[O:17].Cl.[CH3:28][O:29][NH:30][CH3:31].O>C(Cl)Cl>[NH2:13][C:14]1[C:22]([N+:23]([O-:25])=[O:24])=[CH:21][C:20]([Br:26])=[CH:19][C:15]=1[C:16]([N:30]([O:29][CH3:28])[CH3:31])=[O:17]
Reactant: Nc1c(C(=O)O)cc(Br)cc1[N+](=O)[O-]
Reactant: CNOC
Agent: Cl
Agent: O=C(n1ccnc1)n1ccnc1
Solvent: O
Solvent: ClCCl
Product: CON(C)C(=O)c1cc(Br)cc([N+](=O)[O-])c1N
Temperature: 25 °C
Reaction time: 1 h
Yield: 35.9 %

Procedure:
1,1′-Carbonyldiimidazole (41 g) was added portionwise at room temperature to a mixture of 2-amino-5-bromo-3-nitro-benzoic acid (55 g) in DCM (700 ml). The mixture was stirred at room temperature for 1 hour. N-methoxy-methanamine hydrochloride (24.6 g) was added. The mixture was stirred at room temperature overnight and hydrolized with water. The precipitate was filtered off and the filtrate was decanted. The organic layer was dried, filtered and the solvent was evaporated till dryness. The residue was purified by column chromatography over silica gel (eluent: CH2Cl2/ethyl acetate 98/2). The pure fractions were collected and the solvent was evaporated. The precipitate was taken up in HCl 3N (250 ml). The mixture was stirred at room temperature for 4 hours. The precipitate was filtered off, washed with water and dried, yielding 23 g of 2-amino-5-bromo-N-methoxy-N-methyl-3-nitrobenzamide (interm. 55, mp. 129° C.)
Reaction SMILES: [Cl:1][C:2]1[CH:3]=[C:4](/[CH:9]=[CH:10]/[C:11]([N:13]2[CH2:19][CH2:18][C:17](=[O:20])[NH:16][CH2:15][CH2:14]2)=[O:12])[CH:5]=[CH:6][C:7]=1[Cl:8].Cl[CH2:22][CH2:23][CH2:24][N:25]1[CH2:30][CH2:29][CH2:28][CH2:27][CH2:26]1>>[Cl:1][C:2]1[CH:3]=[C:4](/[CH:9]=[CH:10]/[C:11]([N:13]2[CH2:19][CH2:18][C:17](=[O:20])[N:16]([CH2:22][CH2:23][CH2:24][N:25]3[CH2:30][CH2:29][CH2:28][CH2:27][CH2:26]3)[CH2:15][CH2:14]2)=[O:12])[CH:5]=[CH:6][C:7]=1[Cl:8]
Reactant: O=C1CCN(C(=O)/C=C/c2ccc(Cl)c(Cl)c2)CCN1
Reactant: ClCCCN1CCCCC1
Product: O=C(/C=C/c1ccc(Cl)c(Cl)c1)N1CCC(=O)N(CCCN2CCCCC2)CC1

Procedure:
In analogy to the procedure described in intermediate 4A, 1-[(E)-3-(3,4-dichloro-phenyl)-acryloyl]-[1,4]diazepan-5-one (intermediate 1A) and 1-(3-chloro-propyl)-piperidine gave the title compound as light yellow solid. MS: 438.1 (MH+, 2Cl).
Reaction SMILES: [C:1]1([CH:7]([C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)[N:8]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[CH:10]([C:17]3[C:26]([OH:27])=[CH:25][C:20]4[O:21][CH2:22][CH2:23][O:24][C:19]=4[C:18]=3[F:28])[C:9]2=[O:29])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:36]1(C(C2C=CC=CC=2)N2C3C(=CC=CC=3)C(C3C=C(C)C(OC)=CC=3O)C2=O)C=CC=CC=1>>[C:30]1([CH:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[N:8]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[C:10]3([C:17]4[C:26](=[CH:25][C:20]5[O:21][CH2:22][CH2:23][O:24][C:19]=5[C:18]=4[F:28])[O:27][CH2:36]3)[C:9]2=[O:29])[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=1
Reactant: COc1cc(O)c(C2C(=O)N(C(c3ccccc3)c3ccccc3)c3ccccc32)cc1C
Reactant: O=C1C(c2c(O)cc3c(c2F)OCCO3)c2ccccc2N1C(c1ccccc1)c1ccccc1
Product: O=C1N(C(c2ccccc2)c2ccccc2)c2ccccc2C12COc1cc3c(c(F)c12)OCCO3

Procedure:
Following the procedure as described in EXAMPLE 2 and making non-critical variations using 1-(diphenylmethyl)-3-(5-fluoro-7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-1,3-dihydro-2H-indol-2-one to replace 1-(diphenylmethyl)-3-(2-hydroxy-4-methoxy-5-methylphenyl)-1,3-dihydro-2H-indol-2-one, 1′-(diphenylmethyl)-9-fluoro-2,3-dihydro-spiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-2′(1′H)-one was obtained (95%) as an off-white solid: MS (ES+) m/z 479.8 (M+1).
Reaction SMILES: [F:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[N+:10]([O-:12])=[O:11])[CH:5]=O.[NH:13]1[CH2:18][CH2:17][CH:16]([C:19]([OH:22])([CH3:21])[CH3:20])[CH2:15][CH2:14]1.CC(O)=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[F:1][C:2]1[CH:3]=[C:4]([CH:7]=[CH:8][C:9]=1[N+:10]([O-:12])=[O:11])[CH2:5][N:13]1[CH2:18][CH2:17][CH:16]([C:19]([OH:22])([CH3:21])[CH3:20])[CH2:15][CH2:14]1
Reactant: CC(C)(O)C1CCNCC1
Reactant: O=Cc1ccc([N+](=O)[O-])c(F)c1
Agent: CC(=O)O[BH-](OC(C)=O)OC(C)=O
Agent: [Na+]
Solvent: CC(=O)O
Solvent: ClCCl
Product: CC(C)(O)C1CCN(Cc2ccc([N+](=O)[O-])c(F)c2)CC1
Temperature: 25 °C
Reaction time: 1 h
Yield: 85.5 %

Procedure:
To a solution of 3-fluoro-4-nitrobenzaldehyde (0.5 g, 2.96 mmol) and 2-(piperidin-4-yl)propan-2-ol (0.466 g, 3.25 mmol) in DCM (25 mL) was added AcOH (0.017 mL, 0.296 mmol) and sodium triacetoxyborohydride (0.689 g, 3.25 mmol), and the reaction was stirred at RT for 1 hour. After 1 hour, the reaction was quenched by the addition of 1 N aqueous NaOH (15 mL), and the layers were separated. The aqueous layer was extracted with DCM, and the combined organic layers were washed with brine, dried over anhydrous magnesium sulfate, filtered, and concentrated. The residual product was adsorbed onto a plug of silica gel, and purified by column chromatography, eluting with 0-100% EtOAc in DCM, to provide 2-(1-(3-fluoro-4-nitrobenzyl)piperidin-4-yl)propan-2-ol as a yellow oil (0.75 g, 86% yield).
Reaction SMILES: [C:1]([C:3]1[CH:12]=[CH:11][C:10](F)=[CH:9][C:4]=1[C:5]([O:7][CH3:8])=[O:6])#[N:2].[Br:14][C:15]1[CH:22]=[CH:21][C:20]([OH:23])=[CH:19][C:16]=1[CH:17]=[O:18].C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O>[Br:14][C:15]1[CH:22]=[CH:21][C:20]([O:23][C:10]2[CH:11]=[CH:12][C:3]([C:1]#[N:2])=[C:4]([CH:9]=2)[C:5]([O:7][CH3:8])=[O:6])=[CH:19][C:16]=1[CH:17]=[O:18]
Reactant: O=Cc1cc(O)ccc1Br
Reactant: COC(=O)c1cc(F)ccc1C#N
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: O
Solvent: CN(C)C=O
Product: COC(=O)c1cc(Oc2ccc(Br)c(C=O)c2)ccc1C#N
Temperature: 80 °C
Reaction time: 8 h
Yield: 59.4 %

Procedure:
A mixture of methyl 2-cyano-5-fluorobenzoate (4.48 g, 25.0 mmol), 2-bromo-5-hydroxybenzaldehyde (5.03 g, 25.0 mmol), and potassium carbonate (4.14 g, 30.0 mmol) in N,N-dimethylformamide (50 mL) was stirred at 80° C. overnight. Water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with brine and dried on anhydrous sodium sulfate. The solvent was removed under reduced pressure and the residue was purified by silica gel chromatography (chloroform) to give methyl 5-(4-bromo-3-formylphenoxy)-2-cyanobenzoate (5.35 g, 71%).
Reaction SMILES: [OH:1][N:2]=[C:3]([C:11](=[O:13])[CH3:12])[C:4]([O:6][C:7]([CH3:10])([CH3:9])[CH3:8])=[O:5].C(=O)([O-])[O-].[K+].[K+].Cl[CH2:21][C:22]([O:24][CH2:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)=[O:23]>C(OCC)(=O)C.CN(C)C=O>[CH2:25]([O:24][C:22]([CH2:21][O:1][N:2]=[C:3]([C:11](=[O:13])[CH3:12])[C:4]([O:6][C:7]([CH3:9])([CH3:8])[CH3:10])=[O:5])=[O:23])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1
Reactant: O=C(CCl)OCc1ccccc1
Reactant: CC(=O)C(=NO)C(=O)OC(C)(C)C
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CN(C)C=O
Solvent: CCOC(C)=O
Product: CC(=O)C(=NOCC(=O)OCc1ccccc1)C(=O)OC(C)(C)C
Temperature: 40 °C
Reaction time: 7 h
Yield: 95.3 %

Procedure:
To a suspension of tert-butyl 2-hydroxyimino-3-oxobutyrate (56.4 g) and potassium carbonate (62.4 g) in ethyl acetate (300 ml) and N,N-dimethylformamide (60 ml) was added benzyl chloroacetate (60 g), and the mixture was stirred at 40° C. for 7 hours. The reaction mixture was poured into ice-water (1000 ml), and the separated organic layer was washed twice with a saturated aqueous solution of sodium chloride and then dried over magnesium sulfate. Removal of the solvent gave tert-butyl 2-benzyloxycarbonylmethoxyimino-3-oxobutyrate (96.3 g) as an oil.