Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [Br:1][C:2]1([Br:12])[C:10]2[C:5](=[N:6][CH:7]=[CH:8][CH:9]=2)[NH:4][C:3]1=[O:11].[Br:13]Br.C(=O)(O)[O-].[Na+]>C(O)(C)(C)C.O>[Br:12][C:2]1([Br:1])[C:10]2[C:5](=[N:6][CH:7]=[C:8]([Br:13])[CH:9]=2)[NH:4][C:3]1=[O:11]
Reactant: O=C1Nc2ncccc2C1(Br)Br
Reactant: BrBr
Agent: O=C([O-])O
Agent: [Na+]
Solvent: O
Solvent: CC(C)(C)O
Product: O=C1Nc2ncc(Br)cc2C1(Br)Br

Procedure:
A solution of 3,3-dibromo-1,3-dihydro-2H-pyrrolo[2,3-b]pyridin-2-one (5.0 g, 13.4 mmol) in tert-BuOH (100 mL) and water (100 mL) was stirred at room temperature and bromine (5.5 g, 34.3 mmol) was added dropwise over 20 min. A saturated aqueous solution of sodium bicarbonate (approx. 15 mL) was added dropwise over 30 min to raise the pH of the solution to 6.5. The yellow solid formed was collected by filtration. The filtrate was condensed to approx. 100 mL and extracted with CHCl3 (2×50 mL). The combined organic extracts were dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to leave a yellow solid. The solids were combined and dried under vacuum to give 3,3,5-tribromo-1,3-dihydro-2H-pyrrolo[2,3-b]pyridin-2-one as a yellow solid, 6.25 g (98%). 1H NMR (CDCl3) δ 9.4 (br s, 1 H), 8.28 (d, 1H, J=2 Hz), 7.95 (d, 1H, J=2 Hz).
Reaction SMILES: [Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[N:9]1[C:13]([C:14]2[CH:19]=[CH:18][C:17]([N:20]([CH3:22])[CH3:21])=[CH:16][CH:15]=2)=[C:12]([CH3:23])[C:11]([C:24](O)=[O:25])=[N:10]1.[OH:27][C:28]1([C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[CH2:33][CH2:32][NH:31][CH2:30][CH2:29]1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.C(N(CC)CC)C>O1CCCC1>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[N:9]1[C:13]([C:14]2[CH:15]=[CH:16][C:17]([N:20]([CH3:21])[CH3:22])=[CH:18][CH:19]=2)=[C:12]([CH3:23])[C:11]([C:24]([N:31]2[CH2:30][CH2:29][C:28]([C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)([OH:27])[CH2:33][CH2:32]2)=[O:25])=[N:10]1
Reactant: OC1(c2ccccc2)CCNCC1
Reactant: Cc1c(C(=O)O)nn(-c2ccc(Cl)cc2Cl)c1-c1ccc(N(C)C)cc1
Agent: CN(C)[P+](On1nnc2ccccc21)(N(C)C)N(C)C
Agent: F[P-](F)(F)(F)(F)F
Solvent: CCN(CC)CC
Solvent: C1CCOC1
Product: Cc1c(C(=O)N2CCC(O)(c3ccccc3)CC2)nn(-c2ccc(Cl)cc2Cl)c1-c1ccc(N(C)C)cc1
Yield: 49 %

Procedure:
1-(2,4-dichlorophenyl)-5-[4-(dimethylamino)phenyl]-4-methyl-1H-pyrazole-3-carboxylic acid (1 eq, 10 mg, 0.026 mmol), 4-hydroxy-4-phenylpiperidine (1 eq, 4.5 mg, 0.026 mmol), benzotriazole-1-yl-oxytris(dimethylamino)phosphonium hexafluorophosphate (BOP) (1 eq., 11.3 mg, 0.026 mmol), and triethylamine (0.02 mL) were stirred in tetrahydrofuran (5 mL) for 16 h. The reaction was concentrated in vacuo. The crude reaction material was then purified by silica gel column chromatography using 0-100% ethyl acetate/hexane to yield pure 1-{[1-(2,4-dichlorophenyl)-5-[4-(dimethylamino)phenyl]-4-methyl-1H-pyrazol-3-yl]carbonyl}-4-phenylpiperidin-4-ol (7 mg, 50%). 1H NMR (300 MHz, CHLOROFORM-d) d ppm 1.73-1.95 (m, 2H) 2.09-2.29 (m, 5H) 2.85-3.04 (m, 3H) 3.34 (t, J=12.43 Hz, 1H) 3.66 (t, J=12.81 Hz, 1H) 4.34 (d, J=13.19 Hz, 1H) 4.74 (d, J=13.28 Hz, 1H) 6.61 (d, J=8.57 Hz, 2H) 6.99 (d, J=8.67 Hz, 2H) 7.09-7.57 (m, 8H).
Reaction SMILES: [Br:1][C:2]1[CH:3]=[N:4][CH:5]=[C:6]([CH2:8]O)[CH:7]=1.N1C=CC=CC=1.[Br:16]P(Br)(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>C(#N)C>[Br:1][C:2]1[CH:3]=[N:4][CH:5]=[C:6]([CH2:8][Br:16])[CH:7]=1
Reactant: OCc1cncc(Br)c1
Reactant: BrP(Br)(c1ccccc1)(c1ccccc1)c1ccccc1
Solvent: CC#N
Solvent: c1ccncc1
Product: BrCc1cncc(Br)c1
Temperature: 0 °C

Procedure:
3-Bromo-5-hydroxymethylpyridine (16.1 mmol) [prepared according to the procedure of Ashimori et al, Chem. Pharm. Bull. 1990, 38(9), 2446] and pyridine (32.3 mmol) were dissolved in acetonitrile (32 mL) and cooled to 0° C. Dibromotriphenylphosphorane (20.9 mmol) added, and left reaction mixture to warm to room temperature in stoppered flask for 4 hours. The crude reaction mixture was purified by column chromatography directly on silica gel with diethyl ether:cyclohexane=1:1. 3-Bromo-5-bromomethylpyridine was isolated as a pale brown solid. 3-Bromo-5-bromomethylpyridine (7.7 mmol) and di-tert-butyliminodicarboxylate (10 mmol) were dissolved in tetrahydrofaran (20 mL), and sodium hydride (60% in mineral oil, 10 mmol) added at room temperature under argon. The reaction mixture was stirred at room temperature for 16 hours, quenched with saturated aqueous ammonium chloride, extracted into ethyl acetate, washed with brine, dried over magnesium sulfate, and concentrated to dryness. The crude residue was purified by column chromatography on silica gel with cyclohexane:diethyl ether=2:1. 3-bromo-5-(N,N-bis-tert-butoxycarbonyl)aminomethylpyridine was isolated as a pale yellow solid. MS (EI) 387 and 389 (M++H).
Reaction SMILES: [N:1](OCCC(C)C)=[O:2].[F:9][C:10]1[CH:11]=[C:12]2[C:16](=[CH:17][CH:18]=1)[NH:15][CH2:14][C:13]2([CH3:20])[CH3:19].O>C(Cl)Cl>[F:9][C:10]1[CH:11]=[C:12]2[C:16](=[CH:17][CH:18]=1)[N:15]([N:1]=[O:2])[CH2:14][C:13]2([CH3:20])[CH3:19]
Reactant: CC1(C)CNc2ccc(F)cc21
Reactant: CC(C)CCON=O
Solvent: ClCCl
Solvent: O
Product: CC1(C)CN(N=O)c2ccc(F)cc21
Yield: 96 %

Procedure:
Isoamyl nitrite (3.4 mL, 25.42 mmol) is added to a solution of 5-fluoro-3,3-dimethyl-2,3-dihydro-1H-indole (3.75 g, 22.69 mmol) in DCM. The mixture is refluxed overnight. The mixture is cooled and portioned between DCM and water. The organic phase is separated, washed with saturated aqueous NaHCO3, water and brine, dried (MgSO4), filtered and concentrated in vacuo to afford 5-fluoro-3,3-dimethyl-1-nitroso-2,3-dihydro-1H-indole (4.23 g, 96%) as a solid. MS: 195 (M+H). 1H NMR (300 MHz, CD3Cl)): δ 7.77 (dd, 1H), 7.08-6.98 (m, 2H), 3.94 (s, 2H), 1.39 (s, 6H).