Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [Br:1][C:2]1[CH:6]=[C:5]([C:7]([NH:9][C:10]2[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][C:11]=2[C:17](=[O:24])[NH:18][CH:19]([CH:21]2[CH2:23][CH2:22]2)[CH3:20])=[O:8])[N:4]([C:25]2[C:30]([Cl:31])=[CH:29][CH:28]=[CH:27][N:26]=2)[N:3]=1.C(OCC)(=O)C.[OH-].[Na+].[Br:40]Br>O>[Br:1][C:2]1[CH:6]=[C:5]([C:7]([NH:9][C:10]2[C:11]([C:17]([NH:18][CH:19]([CH:21]3[CH2:23][CH2:22]3)[CH3:20])=[O:24])=[CH:12][C:13]([Cl:16])=[CH:14][C:15]=2[Br:40])=[O:8])[N:4]([C:25]2[C:30]([Cl:31])=[CH:29][CH:28]=[CH:27][N:26]=2)[N:3]=1
Reactant: BrBr
Reactant: CC(NC(=O)c1cc(Cl)ccc1NC(=O)c1cc(Br)nn1-c1ncccc1Cl)C1CC1
Agent: [Na+]
Agent: [OH-]
Solvent: CCOC(C)=O
Solvent: O
Product: CC(NC(=O)c1cc(Cl)cc(Br)c1NC(=O)c1cc(Br)nn1-c1ncccc1Cl)C1CC1
Temperature: 25 °C
Reaction time: 18 h
Yield: 89.8 %

Procedure:
A mixed solution comprising 6.0 g of 3-bromo-N-(4-chloro-2-(1-cyclopropylethylcarbamoyl)phenyl)-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carboxamide and 75 ml of ethyl acetate was cooled with ice, 1.4 g of sodium hydroxide (flakes) was added, and then 2.8 g of bromine was added over a period of 2 hours. After stirring at room temperature for 18 hours, 60 ml of water was added to the reaction liquid, followed by extraction with ethyl acetate. The organic layer was washed with a sodium chloride aqueous solution and dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure, and the precipitated crystals were washed with 20 ml of a mixed solution of ethyl acetate and hexane (1:5) and subjected to filtration to obtain 6.2 g of the desired product in the form of white crystals.
Reaction SMILES: [CH2:1]([N:3]([CH2:11][CH2:12][OH:13])[C:4]1[CH:9]=[CH:8][CH:7]=[C:6]([CH3:10])[CH:5]=1)[CH3:2].S(=O)(=O)(O)O.[N:19](OC(C)C)=[O:20]>C(O)(C)C>[CH2:1]([N:3]([CH2:11][CH2:12][OH:13])[C:4]1[CH:9]=[CH:8][C:7]([N:19]=[O:20])=[C:6]([CH3:10])[CH:5]=1)[CH3:2]
Reactant: CCN(CCO)c1cccc(C)c1
Reactant: CC(C)ON=O
Agent: O=S(=O)(O)O
Solvent: CC(C)O
Product: CCN(CCO)c1ccc(N=O)c(C)c1
Temperature: 10 °C
Reaction time: 4 h
Yield: 115 %

Procedure:
With 89.6 g (0.5 mole) of N-ethyl-N-(β-hydroxyethyl)-m-toluidine was mixed 270 ml of 80% v/v isopropanol, and 24.5 g (0.25 mole) of sulfuric acid was added with cooling and stirring at 10° C. or lower. After 49.0 g (0.55 mole) of isopropyl nitrite was added dropwise at 10° C. or lower, the reaction was carried out at 2° C. or lower for another 4 hours. After completion of the reaction, the crystals precipitated were collected by filtration to obtain 119.7 g of N-ethyl-N-(β-hydroxyethyl)-3-methyl-4-nitrosoaniline.1/2 sulfate as yellow-green powder. Yield: 93.0%. Decomposition point: 74° C.
Reaction SMILES: [O:1]1[CH2:3][C@@H:2]1[CH2:4][N:5]1[C:13](=[O:14])[C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[C:6]1=[O:15].[N:16]([C:19]1[CH:24]=[CH:23][C:22]([N:25]2[CH2:30][CH2:29][O:28][CH2:27][C:26]2=[O:31])=[CH:21][CH:20]=1)=[C:17]=[O:18].[Br-].[Li+]>O1CCCC1>[O:18]=[C:17]1[N:16]([C:19]2[CH:24]=[CH:23][C:22]([N:25]3[CH2:30][CH2:29][O:28][CH2:27][C:26]3=[O:31])=[CH:21][CH:20]=2)[CH2:3][C@H:2]([CH2:4][N:5]2[C:13](=[O:14])[C:12]3[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=3)[C:6]2=[O:15])[O:1]1
Reactant: O=C=Nc1ccc(N2CCOCC2=O)cc1
Reactant: O=C1c2ccccc2C(=O)N1C[C@H]1CO1
Agent: [Br-]
Agent: [Li+]
Solvent: C1CCOC1
Product: O=C1c2ccccc2C(=O)N1C[C@H]1CN(c2ccc(N3CCOCC3=O)cc2)C(=O)O1
Yield: 88.4 %

Procedure:
(S)-2-(oxiran-2-ylmethyl)isoindoline-1,3-dione (3.87 g, 19.06 mmol, 1.1 eq.) and 4-(4-isocyanatophenyl)morpholin-3-one (3.77 g, 17.29 mmol) were dissolved in tetrahydrofuran (70 mL) respectively and then heated to reflux. Then lithium bromide (0.15 g, 1.74 mmol) was added, the mixture was reacted for 4 h, white solid was obtained by filtration (6.45 g, yield: 88.4%).
Reaction SMILES: C1(OC2C=CC=CC=2)C=CC=CC=1.[N+:14]([C:17]1[CH:22]=[CH:21][C:20](Cl)=[CH:19][C:18]=1[C:24]([F:27])([F:26])[F:25])([O-:16])=[O:15].[CH3:28][C:29]1([CH3:36])[NH:33][C:32](=[O:34])[NH:31][C:30]1=[O:35]>>[F:25][C:24]([F:27])([F:26])[C:18]1[CH:19]=[C:20]([N:31]2[C:30](=[O:35])[C:29]([CH3:36])([CH3:28])[NH:33][C:32]2=[O:34])[CH:21]=[CH:22][C:17]=1[N+:14]([O-:16])=[O:15]
Reactant: CC1(C)NC(=O)NC1=O
Reactant: O=[N+]([O-])c1ccc(Cl)cc1C(F)(F)F
Solvent: c1ccc(Oc2ccccc2)cc1
Product: CC1(C)NC(=O)N(c2ccc([N+](=O)[O-])c(C(F)(F)F)c2)C1=O
Temperature: 200 °C
Yield: 21 %

Procedure:
The following were introduced into 383.52 ml of phenyl oxide: 225.60 grams of 2-nitro-5-chloro-trifluoromethylbenzene, described in the German Patent No. DRP 637,318, 128.10 grams of 5,5-dimethylhydantoin described in Beil., Vol. 24, 289 and 198.53 grams of cuprous oxide. The mixture was heated to 200° C. for 24 hours, then cooled to 20° C. and filtered. The residue was rinsed with phenyl oxide, then extracted with ethyl acetate. The ethyl acetate phase was concentrated to dryness under reduced pressure at 60° C. and the residue was taken up in ammoniacal dichloroethane. The crystals obtained were dried at 60° C. to obtain 66.55 grams of crude product which, after purification from aqueous ethanol yielded 62.55 grams of purified desired product.
Reaction SMILES: C(OC(=O)[NH:7][C@@H:8]([CH2:18][C:19]1[CH:24]=[CH:23][C:22]([F:25])=[CH:21][CH:20]=1)[C:9]([N:11]1[CH2:16][CH2:15][CH:14]([OH:17])[CH2:13][CH2:12]1)=[O:10])(C)(C)C.[ClH:27].O1CCOCC1>CO>[ClH:27].[NH2:7][C@@H:8]([CH2:18][C:19]1[CH:20]=[CH:21][C:22]([F:25])=[CH:23][CH:24]=1)[C:9]([N:11]1[CH2:12][CH2:13][CH:14]([OH:17])[CH2:15][CH2:16]1)=[O:10]
Reactant: CC(C)(C)OC(=O)N[C@@H](Cc1ccc(F)cc1)C(=O)N1CCC(O)CC1
Agent: Cl
Solvent: C1COCCO1
Solvent: CO
Product: N[C@@H](Cc1ccc(F)cc1)C(=O)N1CCC(O)CC1
Temperature: 25 °C
Reaction time: 6 h

Procedure:
Route A: To a solution of [1 (S)-(4-fluorobenzyl)-2-(4-hydroxypiperidin-1-yl)-2-oxoethyl]carbamic acid tert-butyl ester (Preparation 19, 11.6 g, 31.7 mmol) in methanol (40 mL) was added hydrochloric acid in dioxane (24 mL, 4N, 95.0 mmol) and the reaction mixture stirred at rt for 6 h. The solvent was removed in vacuo and the residue was dissolved in water (100 mL) and extracted into ethyl acetate (2×50 mL). The aqueous phase was evaporated to dryness to give the title compound as a white solid. δH (D2O): 0.52–0.63 (0.5H, m), 1.12–1.23 (0.5H, m), 1.26–1.38 (1H, m), 1.42–1.50 (0.5H, m), 1.59–1.69 (0.5H, m), 1.72–1.82 (1H, m), 2.61–2.71 (0.5H, m), 2.91–3.15 (4H, m), 3.33–3.47 (1H, m), 3.69–3.78 (1H, m), 3.88–3.96 (1H, m), 4.60–4.72 (1H, m), 7.02–7.11 (2H, m), 7.14–7.26 (2H, m).
Reaction SMILES: [NH:1]1[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.Cl[CH2:8][C@@H:9]1[O:11][CH2:10]1.CC(C)([O-])C.[K+].O1CCCC1>C(O)(C)(C)C>[O:11]1[CH2:10][CH:9]1[CH2:8][N:1]1[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1
Reactant: ClC[C@H]1CO1
Reactant: C1COCCN1
Agent: CC(C)(C)[O-]
Agent: [K+]
Solvent: C1CCOC1
Solvent: CC(C)(C)O
Product: C1CN(CC2CO2)CCO1
Temperature: 25 °C
Yield: 88.7 %

Procedure:
Morpholine 53a (8.712 ml, 0.1 mol) was dissolved in tert-butanol (4.5 ml) under stirring at room temperature, and (R)-(−)-1-chloro-2,3-epoxypropane (8.05 ml, 0.1 mol) was added slowly to the solution at 0° C. in an ice-water bath. Upon completion of the addition, the ice-water bath was removed, and the reaction mixture was allowed to warm up to room temperature and stirred for 24 hours. After thin lay chromatography showed the disappearance of starting materials, the reaction mixture was added dropwise with a solution of potassium tert-butoxide in tetrahydrofuran (60 ml, 1.67 mol/L, 100 mmol) while maintaining the temperature below 10° C. in an ice-water bath, gradually turned from light yellow to white turbid solution and stirred for 30 minutes. After thin lay chromatography showed the disappearance of starting materials, the reaction mixture was concentrated under reduced pressure, added with water (50 ml), exacted with dichloromethane (100 ml×2). The combined organic extracts were washed with saturated brine (100 ml), dried over anhydrous magnesium sulfate, filtered to remove the drying agent and concentrated under reduced pressure to obtain the title compound 4-oxiranylmethyl-morpholine 53b (12.7 g, yield 88.8%) as a yellow oil.
Reaction SMILES: [C:1]([C:3]1[CH:4]=[C:5]([CH:10]=[CH:11][C:12]=1OS(C(F)(F)F)(=O)=O)[C:6]([O:8][CH3:9])=[O:7])#[N:2].[C:21]1(B(O)O)[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.C(OCC)(=O)C>[C:1]([C:3]1[CH:4]=[C:5]([C:6]([O:8][CH3:9])=[O:7])[CH:10]=[CH:11][C:12]=1[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)#[N:2]
Reactant: OB(O)c1ccccc1
Reactant: COC(=O)c1ccc(OS(=O)(=O)C(F)(F)F)c(C#N)c1
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CCOC(C)=O
Solvent: CN(C)C=O
Product: COC(=O)c1ccc(-c2ccccc2)c(C#N)c1
Temperature: 150 °C
Yield: 81.2 %

Procedure:
The following reaction was split into two batches with half the amounts: methyl 3-cyano-4-{[(trifluoromethyl)sulfonyl]oxy}benzoate (D25) (1.5 g, 4.85 mmol), phenylboronic acid (1.183 g, 9.70 mmol), potassium carbonate (2.011 g, 14.55 mmol) and palladium tetrakistriphenylphosphine(0) (0.561 g, 0.485 mmol) were taken up in DMF (24 ml) and the mixture heated in the microwave for 30 min at 150° C. The two reactions were combined and diluted with ethyl acetate (50 mL) and the mixture filtered through kieselguhr to remove palladium residues. The filtrate was concentrated in vacuo to reduce the amount of DMF and then the residue partitioned between saturated aqueous sodium bicarbonate (50 mL) and ethyl acetate (50 mL). The organic phase was washed with further sodium bicarbonate (50 mL) and then water (50 mL) before it was dried (MgSO4), filtered and the solvent removed in vacuo. The brown solid was purified by silica chromatography, eluting 0-25% EtOAc in iso-hexane over 35 minutes to give the title compound as a white solid (935 mg, 3.94 mmol). δH (d6-DMSO, 400 MHz): 8.42 (1H, d), 8.29 (1H, dd), 7.81 (1H, d), 7.65 (2H, m), 7.60-7.50 (3H, m), 3.92 (3H, s). MS (ES): no mass ion observed.
Reaction SMILES: CC1C=CC(S(O[CH2:12][C@H:13]2[O:18][C@@H:16]([CH3:17])[CH2:15][C@@H:14]2[OH:19])(=O)=O)=CC=1.CN(C)C=O.[N-:25]=[N+:26]=[N-:27].[Na+]>C(OCC)C.O.[Cl-].[Na+]>[N:25]([CH2:12][C@H:13]1[O:18][C@@H:16]([CH3:17])[CH2:15][C@@H:14]1[OH:19])=[N+:26]=[N-:27]
Reactant: [N-]=[N+]=[N-]
Reactant: Cc1ccc(S(=O)(=O)OC[C@H]2O[C@@H](C)C[C@@H]2O)cc1
Agent: [Cl-]
Agent: [Na+]
Solvent: O
Solvent: CCOCC
Solvent: CN(C)C=O
Product: C[C@H]1C[C@H](O)[C@@H](CN=[N+]=[N-])O1
Yield: 77.4 %

Procedure:
A mixture, under argon, of 0.560 g of product from Example 337, 2 ml of N,N-dimethylformamide and 0.250 g of sodium azide is stirred at 75°C. for 12 hours. The reaction mixture is diluted with diethyl ether, washedwith water and saturated sodium chloride, dried and concentrated in vacuo to give 0.238 g of the desired product.
Reaction SMILES: [C:1]([C:3]1[CH:10]=[CH:9][C:6]([CH:7]=[O:8])=[CH:5][CH:4]=1)#[N:2].[BH4-].[Na+]>C(O)C.O1CCCC1>[C:1]([C:3]1[CH:10]=[CH:9][C:6]([CH2:7][OH:8])=[CH:5][CH:4]=1)#[N:2]
Reactant: N#Cc1ccc(C=O)cc1
Agent: [BH4-]
Agent: [Na+]
Solvent: C1CCOC1
Solvent: CCO
Product: N#Cc1ccc(CO)cc1
Temperature: 0 °C
Yield: 93.8 %

Procedure:
To a mixture of 4-cyanobenzaldehyde (5.00 g) in ethanol (50 mL) and tetrahydrofuran (20 mL) was added sodium borohydride (2.16 g) under ice-water cooling, and the mixture was stirred for an hour at 0° C. After evaporation of the solvent, the residue was partitioned between ethyl acetate and water. The separated organic layer was washed with water and brine, dried over magnesium sulfate and evaporated in vacuo to give 4-cyanobenzyl alcohol (4.76 g) as a colorless oil.
Reaction SMILES: [C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]([OH:16])=O)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Cl.[CH3:18][NH:19][O:20][CH3:21].C(N(CC)CC)C>CN(C1C=CN=CC=1)C.C(Cl)Cl>[CH3:21][O:20][N:19]([CH3:18])[C:14]([CH:11]1[CH2:10][CH2:9][N:8]([C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])[CH2:13][CH2:12]1)=[O:16]
Reactant: CC(C)(C)OC(=O)N1CCC(C(=O)O)CC1
Reactant: CNOC
Agent: CN(C)c1ccncc1
Agent: Cl
Solvent: ClCCl
Solvent: CCN(CC)CC
Product: CON(C)C(=O)C1CCN(C(=O)OC(C)(C)C)CC1
Temperature: 25 °C
Reaction time: 8 h

Procedure:
A mixture of 1-(tert-butoxycarbonyl)piperidine-4-carboxylic acid (Aldrich, 6.0 g, 26.2 mmol), N,O-dimethylhydroxylamine hydrochloride (3.06 g, 31.4 mmol), DMAP (3.20 g, 26.2 mmol), and triethyl amine (4.74 mL, 34 mmol) in DCM (200 mL) was stirred at room temperature overnight. The mixture was washed with saturated aqueous KHSO4 and brine. The organic layer was dried (MgSO4) and the solvent was removed. The crude material was directly used in the next step.
Reaction SMILES: Cl.[CH3:2][NH:3][O:4][CH3:5].CCN(C(C)C)C(C)C.[C:15]([N:22]1[CH2:30][CH2:29][CH:25]([C:26]([OH:28])=O)[CH2:24][CH2:23]1)([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16].ON1C2C=CC=CC=2N=N1.Cl.CN(C)CCCN=C=NCC.CNOC>ClCCl.CN(C=O)C>[C:18]([O:17][C:15]([N:22]1[CH2:23][CH2:24][CH:25]([C:26](=[O:28])[N:3]([O:4][CH3:5])[CH3:2])[CH2:29][CH2:30]1)=[O:16])([CH3:19])([CH3:20])[CH3:21]
Reactant: CNOC
Reactant: CC(C)(C)OC(=O)N1CCC(C(=O)O)CC1
Agent: CCN=C=NCCCN(C)C
Agent: Cl
Agent: On1nnc2ccccc21
Solvent: CN(C)C=O
Solvent: CCN(C(C)C)C(C)C
Solvent: ClCCl
Product: CON(C)C(=O)C1CCN(C(=O)OC(C)(C)C)CC1
Yield: 79.2 %

Procedure:
N,O-dimethylhydroxylamine hydrochloride (851 mg, 8.72 mmols) was suspended in dichloromethane (6 ml) and cooled to 0 C. N,N′-diisopropylethylamine (1.66 ml, 9.53 mmols) was added and the mixture was stirred at 0 C until a clear solution was obtained. The resulting solution was kept at 0 C for further use. Boc-isonipecotic acid (2 g, 8.72 mmol), 1-hydroxybenzotriazole (1.2 g, 8.88 mmols) and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDCl) (1.83 g, 9.58 mmols) were dissolved in DMF (15 ml) and cooled to 0 C. The solution of N,O-dimethylhydroxylamine in dichloromethane was added with stirring, and the resulting reaction mixture was allowed to stir overnight at room temperature. DMF was removed under reduced pressure and residue was partitioned between ethyl acetate and 10% citric acid. Organic layer was isolated, washed with water, saturated NaHCO3, water and brine and dried over MgSO4. Solvent was removed under reduced pressure and the residue was purified on silica gel eluting with ethyl acetate in hexanes (2:1) to provide the title compound (1.88 g, 79%). LCMS m/e (295, M+Na).
Reaction SMILES: C(Cl)(=O)C(Cl)=O.CS(C)=O.[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][CH:21]([CH2:24][CH2:25][CH2:26][OH:27])[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12].C(N(CC)CC)C>ClCCl>[C:11]([O:15][C:16]([N:18]1[CH2:23][CH2:22][CH:21]([CH2:24][CH2:25][CH:26]=[O:27])[CH2:20][CH2:19]1)=[O:17])([CH3:14])([CH3:13])[CH3:12]
Reactant: CC(C)(C)OC(=O)N1CCC(CCCO)CC1
Agent: O=C(Cl)C(=O)Cl
Solvent: ClCCl
Solvent: CCN(CC)CC
Solvent: CS(C)=O
Product: CC(C)(C)OC(=O)N1CCC(CCC=O)CC1
Temperature: -78 °C
Reaction time: 0.03 h
Yield: 86.6 %

Procedure:
To a stirred solution of oxalyl chloride (2 mL, 22 mmol) in dry dichloromethane (50 mL) at −78° C. under argon, was added dropwise a solution of dimethylsulfoxide (3.4 mL, 44 mmol) in dichloromethane (10 mL). After 2 min, a solution of 3-[N-(t-butoxycarbonyl)piperidin-4-yl]propanol (4.86 g, 20 mmol) in dichloromethane (10 mL) was added dropwise over 5 min. After stirring an additional 15 min at −78° C., triethylamine (14 mL) was added dropwise. After 5 min, the reaction became a thick white slurry and was allowed to warm to RT and stirred for 16 h. The reaction mixture was washed with cold 1N hydrochloric acid and with brine, dried (magnesium sulfate) and concentrated. The residue was purified by flash chromatography (silica gel, 30% ethyl acetate/hexane) to yield the title compound (4.18 g, 87%). TLC Rf 0.40 (30% ethyl acetate/hexane); 1H NMR (CDCl3) δ0.95-1.80 (7H, m), 1.48 (9H, s), 2.40-2.90 (4H, m), 4.14 (2H, br dt), 9.88 (1H, t).
Reaction SMILES: [Br:1][C:2]1[CH:3]=[C:4]([CH:6]=[CH:7][CH:8]=1)[NH2:5].Cl[C:10]1[C:19]2[C:14](=[CH:15][CH:16]=[C:17]([N+:20]([O-:22])=[O:21])[CH:18]=2)[N:13]=[CH:12][N:11]=1>C(O)(C)C>[Br:1][C:2]1[CH:3]=[C:4]([NH:5][C:10]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([N+:20]([O-:22])=[O:21])[CH:18]=3)[N:13]=[CH:12][N:11]=2)[CH:6]=[CH:7][CH:8]=1
Reactant: O=[N+]([O-])c1ccc2ncnc(Cl)c2c1
Reactant: Nc1cccc(Br)c1
Solvent: CC(C)O
Product: O=[N+]([O-])c1ccc2ncnc(Nc3cccc(Br)c3)c2c1
Yield: 95.4 %

Procedure:
3-Bromoaniline (1.72 grams, 10 mmol) was reacted with 4-chloro-6-nitroquinazoline (523 mg, 2.5 mmol), in iso-propylalcohol, as is described hereinabove, to give 4-[(3-bromophenyl)amino]-6-nitroquinazoline (823 mg, 95% yield), which was thereafter reacted (590 mg, 1.7 mmol) with hydrazine hydrate, according to the procedure described hereinabove, to give 4-[(3-bromophenyl)amino]-6-aminoquinazoline (332 mg, 62% yield).
Reaction SMILES: [O:1]=[C:2]([CH3:11])[CH2:3][C:4]([O:6][C:7]([CH3:10])([CH3:9])[CH3:8])=[O:5].[Cl-].[Mg+2].[Cl-].[C:15](Cl)(=[O:17])[CH3:16].Cl>ClCCl.N1C=CC=CC=1>[C:2]([CH:3]([C:15](=[O:17])[CH3:16])[C:4]([O:6][C:7]([CH3:10])([CH3:9])[CH3:8])=[O:5])(=[O:1])[CH3:11]
Reactant: CC(=O)Cl
Reactant: CC(=O)CC(=O)OC(C)(C)C
Agent: Cl
Agent: [Cl-]
Agent: [Mg+2]
Solvent: c1ccncc1
Solvent: ClCCl
Product: CC(=O)C(C(C)=O)C(=O)OC(C)(C)C
Reaction time: 0.25 h
Yield: 98.1 %

Procedure:
34.2 ml (0.21 mol) of tert-butyl 3-oxobutanoate were dissolved in 300 ml of dichloromethane, and 20 g (0.21 mol, 1.0 eq.) of anhydrous magnesium chloride were added. At 0° C., 33.9 ml (0.42 mol, 2.0 eq.) of dry pyridine were added to the suspension, which was stirred vigorously. After 15 minutes, 14.3 ml (0.21 mol, 1.0 eq.) of acetyl chloride were added dropwise, and the mixture was stirred at RT for 1 hour. At 0° C., excess pyridine was neutralized with dilute hydrochloric acid (37 ml of conc. hydrochloric acid and 100 ml of water), and the organic phase was separated off. The aqueous phase was extracted with MTBE (3×100 ml), and the combined organic phases were washed with saturated NaCl solution and dried over MgSO4. Removal of the solvent gave 41.2 g (0.206 mol, 98%) of tert-butyl 2-acetyl-3-oxobutanoate in the form of a pale yellow oil.
Reaction SMILES: [C:1]1([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH:6]=[CH:5][C:4]([CH2:7][O:8][C:9]2[CH:14]=[CH:13][C:12]([CH2:15][C:16](OC)=[O:17])=[CH:11][CH:10]=2)=[CH:3][CH:2]=1.[CH3:26][N:27]([CH3:31])[CH2:28][CH2:29][NH2:30].N1C=NC=N1>CO>[C:1]1([C:20]2[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH:6]=[CH:5][C:4]([CH2:7][O:8][C:9]2[CH:14]=[CH:13][C:12]([CH2:15][C:16]([NH:30][CH2:29][CH2:28][N:27]([CH3:31])[CH3:26])=[O:17])=[CH:11][CH:10]=2)=[CH:3][CH:2]=1
Reactant: CN(C)CCN
Reactant: COC(=O)Cc1ccc(OCc2ccc(-c3ccccc3)cc2)cc1
Agent: c1nc[nH]n1
Solvent: CO
Product: CN(C)CCNC(=O)Cc1ccc(OCc2ccc(-c3ccccc3)cc2)cc1
Temperature: 60 °C
Yield: 94.9 %

Procedure:
A suspension of methyl 4-(4-biphenylylmethoxy)phenylacetate (1000 g), N,N-dimethylethylenediamine (795 g), and 1H-1,2,4-triazole (207 g) in methanol (2.0 l) was heated under reflux under nitrogen for 10 hr and was left to stand at room temperature over night. The reaction mixture was warmed to 60±2° C. and methanol (4.0 l) was added for 35 min. After stirring under reflux for additional one hr the reaction mixture was cooled to room temperature. The precipitate was collected by filtration and washed with methanol (2.0 l) to obtain the titled compound (1109 g).
Reaction SMILES: [NH2:1][C:2]1[CH:7]=[N:6][CH:5]=[CH:4][N:3]=1.Br[CH2:9][CH:10](OC)OC>C(O)C.Cl>[N:1]1[CH:9]=[CH:10][N:3]2[CH:4]=[CH:5][N:6]=[CH:7][C:2]=12
Reactant: COC(CBr)OC
Reactant: Nc1cnccn1
Agent: Cl
Solvent: CCO
Product: c1cn2ccnc2cn1
Yield: 21.4 %

Procedure:
To a solution of 2-aminopyrazine (2.0 g, 21.03 mmol) in ethanol (40 mL) was added 2-bromo-1,1-dimethoxyethane (2.5 mL, 21.03 mmol) followed by 5 drops of concentrated hydrochloric acid. After refluxing for 14 hours, the solvent was evaporated. The residue was partitioned between ethyl acetate and saturated aqueous sodium bicarbonate solution. The aqueous layer was extracted with ethyl acetate (3×). The combined organic phase was washed with brine, dried over magnesium sulfate, and concentrated. The residue was purified by flash chromatography (100% ethyl acetate, 10% methanol in ethyl acetate, then 10% methanol in dichloromethane) to give 536 mg of the title compound as a solid. 1H NMR (500 MHz, CDCl3) δ 7.70 (bs, 1H), 7.82 (bs, 1H), 7.89 (d, 1H, J=4.4 Hz), 8.10 (d, 1H, J=4.6 Hz), 9.12 (s, 1H).
Reaction SMILES: [C:1](=O)([O-])[O-].[K+].[K+].[NH:7]1[C:15]2[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=2)[C:9]([CH2:16][CH2:17][C:18]([OH:20])=[O:19])=[CH:8]1.CI>CN(C)C=O>[NH:7]1[C:15]2[C:10](=[CH:11][CH:12]=[CH:13][CH:14]=2)[C:9]([CH2:16][CH2:17][C:18]([O:20][CH3:1])=[O:19])=[CH:8]1
Reactant: O=C([O-])[O-]
Reactant: O=C(O)CCc1c[nH]c2ccccc12
Agent: [K+]
Solvent: CI
Solvent: CN(C)C=O
Product: COC(=O)CCc1c[nH]c2ccccc12
Temperature: 25 °C
Reaction time: 3 h
Yield: 96.9 %

Procedure:
36.2 g of powdered potassium carbonate was added, with ice-cooling, to a solution of 24.8 g of 3-(indol-3-yl)propionic acid in 500 ml of N,N-dimethylformamide, followed by the addition of a solution of 10.2 ml methyl iodide in 50 ml of N,N-dimethylformamide. The reaction mixture was then warmed to room temperature and stirred for 3 hours. After this time, ice water was added to the reaction mixture, and the aqueous layer was extracted with ethyl acetate. The organic extract was then washed with water, dried over anhydrous magnesium sulfate and concentrated by evaporation under reduced pressure. The resulting residue was subjected to column chromatography using 500 g of silica gel with a 4:1 v/v mixture of hexane and ethyl acetate as the eluent, to yield 25.8 g of the title compound as an amorphous solid.
Reaction SMILES: [Cl:1][C:2]1[N:7]=[C:6](Cl)[CH:5]=[CH:4][N:3]=1.[NH2:9][C:10]1[CH:14]=[C:13]([CH3:15])[NH:12][N:11]=1.C(N(CC)C(C)C)(C)C>C1COCC1>[Cl:1][C:2]1[N:7]=[C:6]([NH:9][C:10]2[CH:14]=[C:13]([CH3:15])[NH:12][N:11]=2)[CH:5]=[CH:4][N:3]=1
Reactant: Clc1ccnc(Cl)n1
Reactant: Cc1cc(N)n[nH]1
Solvent: CCN(C(C)C)C(C)C
Solvent: C1CCOC1
Product: Cc1cc(Nc2ccnc(Cl)n2)n[nH]1
Temperature: 50 °C
Reaction time: 18 h
Yield: 25.8 %

Procedure:
A mixture of 2,4-dichloropyrimidine (2.97 g, 20 mmol), 3-amino-5-methyl-1H-pyrazole (2.14 g, 22 mmol), and N,N-diisopropylethylamine (2.82 g, 22 mmol) in dry THF (75 ml) was stirred at 50° C. for 18 hours. The solvent was removed by evaporation, and the residue partitioned between DCM (75 ml) and water (50 ml). The resulting precipitate was collected by filtration washed with water and then ether, and dried under vacuum at 50° C. to give the title compound (1.08 g, 26%) as a colourless crystalline solid.
Reaction SMILES: [C:1]([O:5][C:6]([NH:8][CH2:9][C:10]1[CH:18]=[CH:17][C:13]([C:14](O)=[O:15])=[CH:12][CH:11]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.ClC(OCC)=O.[BH4-].[Na+]>C1COCC1>[C:1]([O:5][C:6]([NH:8][CH2:9][C:10]1[CH:11]=[CH:12][C:13]([CH2:14][OH:15])=[CH:17][CH:18]=1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
Reactant: CC(C)(C)OC(=O)NCc1ccc(C(=O)O)cc1
Agent: CCOC(=O)Cl
Agent: [BH4-]
Agent: [Na+]
Solvent: C1CCOC1
Solvent: CCN(CC)CC
Product: CC(C)(C)OC(=O)NCc1ccc(CO)cc1
Temperature: 25 °C
Reaction time: 0.25 h
Yield: 65.3 %

Procedure:
To a stirred solution of 4-[N-(t-butoxycarbonyl)-aminomethyl]benzoic acid (16.5 g, 65 mmol) and triethylamine (10 mL, 71 mmol) in dry THF (500 mL) at 0° C. was added ethyl chloroformate (7.5 mL, 78 mmol) dropwise. After stirring for 15 min, sodium borohydride (6 g, 159 mmol) was added in one portion and the reaction was allowed to warm to RT and stirred for 16 h. The reaction was cooled in an ice bath and carefully quenched with 1N hydrochloric acid, extracted with ethyl acetate, and the organic phase was washed with brine, dried (magnesium sulfate), and concentrated. The residue was purified by flash chromatography (silica gel, 20% ethyl acetate:chloroform) to give the title compound (10.07 g, 65%) as a white solid. TLC Rf 0.31 (20% ethyl acetate:chloroform); 1H NMR (CDCl3) δ1.46 (9H, s), 3.28 (1H, br s), 4.27 (2H, d, J=6 Hz), 4.65 (2H, s), 5.04 (1H, br s), 7.30 (4H, dd).