Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: C(OCCCC)CCC.[OH:10][C:11]1[CH:16]=[CH:15][C:14]([C:17](=[O:20])[CH2:18][CH3:19])=[CH:13][CH:12]=1.BrBr.[CH2:23]([C:30]1[CH:35]=[CH:34][N:33]=[CH:32][CH:31]=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>CO>[CH3:19][CH:18]([N:33]1[CH2:34][CH2:35][CH:30]([CH2:23][C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=2)[CH2:31][CH2:32]1)[CH:17]([OH:20])[C:14]1[CH:15]=[CH:16][C:11]([OH:10])=[CH:12][CH:13]=1
Reactant: CCC(=O)c1ccc(O)cc1
Reactant: c1ccc(Cc2ccncc2)cc1
Agent: BrBr
Solvent: CCCCOCCCC
Solvent: CO
Product: CC(C(O)c1ccc(O)cc1)N1CCC(Cc2ccccc2)CC1
Temperature: 25 °C
Reaction time: 1 h
Yield: 86.9 %

Procedure:
To 15 ml of di-n-butyl ether were added 6.0 g of 4'-hydroxypropiophenone. 6.6 Grams of bromine were added dropwise to the mixture with stirring at room temperature. The reaction liquid was stirred for an additional 10 minutes and then nitrogen was introduced thereinto at a flow rate of 200 ml/minute for one hour at room temperature. To the treaction liquid were then added 7.5 g of 4-benzylpyridine and 100 ml of methanol, and the mixture was refluxed under heating for 5 hours. After stopping the heating, the reaction mixture was treated in the same manner as described in Example 35, whereby 11.3 g (73.4%) of ifenprodil were obtained as white crystals.
Reaction SMILES: [CH3:1][C:2]1[CH:3]=[C:4]([OH:9])[CH:5]=[C:6]([CH3:8])[CH:7]=1.[CH3:10][C:11]([CH3:18])=[CH:12][C:13](OCC)=[O:14].S(=O)(=O)(O)O.CCOCC>C1C=CC=CC=1>[CH3:10][C:11]1([CH3:18])[C:5]2[C:4](=[CH:3][C:2]([CH3:1])=[CH:7][C:6]=2[CH3:8])[O:9][C:13](=[O:14])[CH2:12]1
Reactant: CCOC(=O)C=C(C)C
Reactant: Cc1cc(C)cc(O)c1
Agent: O=S(=O)(O)O
Solvent: c1ccccc1
Solvent: CCOCC
Product: Cc1cc(C)c2c(c1)OC(=O)CC2(C)C
Temperature: 25 °C
Reaction time: 0.03 h

Procedure:
3,5-Dimethylphenol (IIa) (3.2 g, 26.2 mmol), ethyl 3,3-dimethylacrylate (5 mL, 36 mmol, 1.4 eq.) and concentrated sulfuric acid (1.5 mL) were dissolved in anhydrous benzene (30 mL), and the reaction mixture was heated to reflux for 2 h. The reaction mixture was cooled to room temperature and washed successively with water (2×40 mL), 5% aqueous NaHCO3 solution (2×20 mL), brine (2×20 mL) and dried over anhydrous sodium sulfate. After filtering off the desiccant, the solvent was removed under vacuum to obtain a dark brown gummy material. To this gummy material was added anhydrous ether (5 mL) and boiled for 2 min on a steam bath. The title compound, IIIa, (3.34 g, 16.4 mmol, Y: 62.4%) was crystallized out from the mixture upon cooling in an ice bath; mp, 95.8-96.3° C.; 1H-NMR (300 MHz, acetone-d6) δ ppm: 1.41 (6H, s, 4,4-Me2), 2.24 (3H, s, 5-Me), 2.46 (3H, s, 7-Me), 2.61 (2H, s, 3-H2), 6.68 (1H, s, Ar-H), 6.76 (1H, s, Ar-H); MS (Isobutane-DCI) m/e: 205 (M+H)+ ; IR (KBr) ν max: 1770, 1250, 1190, 870 cm-1.
Reaction SMILES: [Cl:1][C:2]1[CH:3]=[C:4]([N:11]2[CH2:16][CH2:15][N:14]([CH3:17])[CH2:13][CH2:12]2)[CH:5]=[CH:6][C:7]=1[N+:8]([O-])=O.C(O)(=O)C>[Fe].O1CCCC1>[Cl:1][C:2]1[CH:3]=[C:4]([N:11]2[CH2:16][CH2:15][N:14]([CH3:17])[CH2:13][CH2:12]2)[CH:5]=[CH:6][C:7]=1[NH2:8]
Reactant: CN1CCN(c2ccc([N+](=O)[O-])c(Cl)c2)CC1
Agent: [Fe]
Solvent: C1CCOC1
Solvent: CC(=O)O
Product: CN1CCN(c2ccc(N)c(Cl)c2)CC1
Temperature: 35 °C
Yield: 24.7 %

Procedure:
1-(3-Chloro-4-nitro-phenyl)-4-methyl-piperazine (2.016 g, 7.885 mmol) was combined with Tetrahydrofuran (30 mL). The resulting mixture was filtered. The filtrate was combined with Acetic acid (40 mL, 700 mmol), then at room temperature Iron (2932 mg, 52.50 mmol) was added neat and the mixture was warmed to 35° C. under a nitrogen atmosphere. After 16 h filtered mixture and concentrated resulting filtrate under reduced pressure. The concentrated residue was partitioned between CHCl3 (2×) and saturated aqueous NaHCO3. Combined organics, dried over Na2SO4, filtered, and concentrated under reduced pressure to yield 0.44 g (25%) of 2-Chloro-4-(4-methyl-piperazin-1-yl)-phenylamine as a yellow tinted oil, which crystallized on sitting. This material was used without further manipulation for the subsequent step. LC/MS (E/I+) 226.05 (M+H).
Reaction SMILES: [C:1]([C:4]1[C:21]([OH:22])=[CH:20][C:7]([O:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][C:14]([CH3:19])([CH3:18])[C:15]([OH:17])=[O:16])=[C:6]([CH2:23][CH3:24])[CH:5]=1)(=O)[CH3:2].Cl.[NH2:26][OH:27].C([O-])(=O)C.[Na+]>CO>[OH:27][N:26]=[C:1]([C:4]1[C:21]([OH:22])=[CH:20][C:7]([O:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][C:14]([CH3:19])([CH3:18])[C:15]([OH:17])=[O:16])=[C:6]([CH2:23][CH3:24])[CH:5]=1)[CH3:2]
Reactant: NO
Reactant: CCc1cc(C(C)=O)c(O)cc1OCCCCCC(C)(C)C(=O)O
Agent: CC(=O)[O-]
Agent: Cl
Agent: [Na+]
Solvent: CO
Product: CCc1cc(C(C)=NO)c(O)cc1OCCCCCC(C)(C)C(=O)O
Temperature: 25 °C
Yield: 42.5 %

Procedure:
A mixture of 7.1 g of 7-(4-acetyl-2-ethyl-5-hydroxyphenoxy)-2,2-dimethylheptanoic acid, 0.149 g of hydroxylamine hydrochloride, 0.176 g of sodium acetate, and 50 ml of methanol were heated at reflux for 48 hours. The reaction mixture was allowed to cool to room temperature and the resulting solid collected by filtration. The solid was crystallized from methylene chloride/ hexane to provide 0.32 g of the desired titled product.
Reaction SMILES: [F:1][C:2]([F:11])([F:10])[C:3]1[CH:4]=[C:5]([OH:9])[CH:6]=[CH:7][CH:8]=1.[H-].[Na+].[I:14]I.Cl>C1(C)C=CC=CC=1>[I:14][C:6]1[CH:7]=[CH:8][C:3]([C:2]([F:10])([F:11])[F:1])=[CH:4][C:5]=1[OH:9]
Reactant: Oc1cccc(C(F)(F)F)c1
Reactant: II
Agent: Cl
Agent: [H-]
Agent: [Na+]
Solvent: Cc1ccccc1
Product: Oc1cc(C(F)(F)F)ccc1I
Reaction time: 0.5 h
Yield: 104.4 %

Procedure:
A toluene (200.0 mL) solution of 3-trifluoromethylphenol (16.6 g) was added dropwise to a toluene (300.0 mL) suspension of sodium hydride (7.1 g) under ice cooling. The reaction mixture was stirred at the same temperature for 30 minutes, and iodine (26.0 g) was then added thereto. The solution was stirred at room temperature for 12 hours. Subsequently, 3 N hydrochloric acid was added to the solution so that the pH of the solution was adjusted to 2. The solution was extracted with ethyl acetate. The organic layer was sequentially washed with water and a saturated brine and then dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure. The title crude compound (30.8 g) was obtained as pale yellow oil.
Reaction SMILES: [CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]=[CH:6]2.[NH:12]1[CH2:17][CH2:16][C:15](O)(O)[CH2:14][CH2:13]1>>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]=[C:6]2[C:15]1[CH2:16][CH2:17][NH:12][CH2:13][CH:14]=1
Reactant: COc1ccc2[nH]ccc2c1
Reactant: OC1(O)CCNCC1
Product: COc1ccc2[nH]cc(C3=CCNCC3)c2c1

Procedure:
The experimental protocol used is described in the literature (Eur. J. Med. Chem. (1987) 22, 33-43), starting from 5-methoxy-1H-indole and 4,4-piperidinediol.
Reaction SMILES: Cl[C:2]1[N:7]=[CH:6][CH:5]=[CH:4][N:3]=1.[CH2:8]([O:10][C:11](=[O:30])[C@H:12]([CH2:23][CH2:24][C:25]([O:27][CH2:28][CH3:29])=[O:26])[NH:13][C:14](=[O:22])[C:15]1[CH:20]=[CH:19][C:18]([NH2:21])=[CH:17][CH:16]=1)[CH3:9]>CN(C=O)C>[CH2:8]([O:10][C:11](=[O:30])[CH:12]([NH:13][C:14](=[O:22])[C:15]1[CH:20]=[CH:19][C:18]([NH:21][C:2]2[N:7]=[CH:6][CH:5]=[CH:4][N:3]=2)=[CH:17][CH:16]=1)[CH2:23][CH2:24][C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH3:9]
Reactant: Clc1ncccn1
Reactant: CCOC(=O)CC[C@H](NC(=O)c1ccc(N)cc1)C(=O)OCC
Solvent: CN(C)C=O
Product: CCOC(=O)CCC(NC(=O)c1ccc(Nc2ncccn2)cc1)C(=O)OCC
Temperature: 110 °C
Yield: 69.4 %

Procedure:
2-Chloropyrimidine (0.72 g, 6.3 mmol) and N-(4-aminobenzoyl)-L-glutamic acid diethyl ester (2.04 g, 6.3 mmol, 1 equiv.) were dissolved in DMF (4 mL) and the resulting mixture was heated to 110° C. for 3 hrs. Reaction was complete as determined by TLC. The mixture was cooled to room temperature and partitioned between ethyl acetate and water. The organic phase was washed with brine, dried over MgSO4, and concentrated by rotavap. The residue was purified by column chromatography (silica gel, 50% EtOAc/hexane) to afford 1.75 g of desired product 2-[4-(pyrimidin-2-ylamino)-benzoylamino]-pentanedioic acid diethyl ester in 69% yield. MS (ESI) m/z 399.
Reaction SMILES: [CH3:1][O:2][C:3]([C:5]1[C:14]2[C:9](=[C:10](Br)[C:11]([O:15][CH3:16])=[CH:12][CH:13]=2)[CH:8]=[CH:7][CH:6]=1)=[O:4].[CH3:18][N:19](C)C=O>N1C=CC=CC=1>[CH3:1][O:2][C:3]([C:5]1[C:14]2[C:9](=[C:10]([C:18]#[N:19])[C:11]([O:15][CH3:16])=[CH:12][CH:13]=2)[CH:8]=[CH:7][CH:6]=1)=[O:4]
Reactant: COC(=O)c1cccc2c(Br)c(OC)ccc12
Reactant: CN(C)C=O
Solvent: c1ccncc1
Product: COC(=O)c1cccc2c(C#N)c(OC)ccc12
Temperature: 180 °C

Procedure:
A solution of bromine (26.6 g, 0.167 mole) in glacial acetic acid (25 ml) was added dropwise to a cooled suspension of 6-methoxy-1-naphthalenecarboxylic acid methyl ester (30 g, 0.13 9 moles) in glacial acetic acid (2.75 ml). The precipitate was collected, washed with water and crystallized from ethanol to give 33.3 g of 5-bromo-6-methoxy-1-naphthalenecarboxylic acid methyl ester; mp 119° C.; NMR (CDCl3) δ 3.97 (s, 3H), 4.03 (s, 3H), 7.35 (d, J=9.25 Hz, 1H), 7.4 (m, 1H), 8.05 (d, J=6.75 Hz, 1H), 8.45 (d, J=8.25 Hz, 1H), 8.9 (d, J=9.25, 1H). The latter ester (10.1 g, 34 mmoles) and Cu2 (CN)2.H2O (3.4 g, 17 mmoles) in distilled dimethylformamide (75 ml) containing 15 drops of pyridine was heated at 180° C. for 5 hr. The hot mixture was poured into a mixture of ice (50 g) and conc. NH4 0H (50 ml). The resulting precipitate was collected, washed with water, dried and recrystallized from chloroform-ethyl acetate to afford 5.6 g of 5-cyano-6-methoxy-1-naphthalenecarboxylic acid methyl ester: mp 210°-211° C., NMR (CDCl3)δ 3.95 (s, 3H), 4.15 (s, 3H). To a stirred solution of the latter ester (5.95 g, 24.66 mmoles) in 2-methoxyethanol (100 ml) at 20°-22° C., 4N aqueous NaOH solution (12.3 ml) was added. The reaction mixture was stirred at 20°-22° C. for 60 hr, diluted with water, cooled to 0° C. and rendered acidic with 1N aqueous HCl. The precipitate was collected and dried to yield 5.6 g of the title compound; mp>290° C.; NMR (DMSO-d6) δ 4.1 (s, 3H), 8.1 (m, 5H).
Reaction SMILES: [C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].O.C1(C)C=CC(S(O)(=O)=O)=CC=1.[CH3:21][O:22][CH:23](OC)[CH:24]=[CH2:25].[OH-].[Na+]>O.C(OCC)C>[OH:2][C:1]1[CH:3]=[C:4]2[C:6]([CH2:25][CH2:24][CH:23]([O:22][CH3:21])[O:5]2)=[CH:7][CH:8]=1
Reactant: Oc1cccc(O)c1
Reactant: C=CC(OC)OC
Agent: Cc1ccc(S(=O)(=O)O)cc1
Agent: [Na+]
Agent: [OH-]
Solvent: CCOCC
Solvent: O
Product: COC1CCc2ccc(O)cc2O1
Reaction time: 4 h
Yield: 43 %

Procedure:
A 500-milliliter flask fitted with a dropping funnel was charged with 11.0 g of resorcinol, 0.2 g of p-toluenesulfonic acid monohydrate and 100 ml of diethyl ether for dissolution, and the mixture was cooled with ice. To this solution was slowly added dropwise 13.0 ml of acrolein dimethyl acetal under room temperature. After the dropwise addition, the mixture was stirred for 4 hours while being cooled with ice. To this was added 30 ml of water, the solution was weakly alkalized with a 5% sodium hydroxide aqueous solution, and the organic layer was then washed. After the separation of layers in the solution, the aqueous layer was extracted three times with 50 ml of diethyl ether, and thus obtained ether layers were combined with the previous organic layer. The combined layer was washed with 50 ml of water, and diethyl ether was then removed by distillation in vacuo therefrom. The resulting residue was purified by distillation to obtain 7.7 g of a colorless liquid (yield 43%).
Reaction SMILES: [CH3:1][C:2]1([CH3:18])[C:6](=[O:7])[C:5]2[C:8]([CH3:17])=[C:9]([CH3:16])[C:10]([NH:13][CH:14]=[O:15])=[C:11]([CH3:12])[C:4]=2[O:3]1.[CH2:19]([Mg]Cl)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.O>C1COCC1>[CH2:19]([C:6]1([OH:7])[C:5]2[C:8]([CH3:17])=[C:9]([CH3:16])[C:10]([NH:13][CH:14]=[O:15])=[C:11]([CH3:12])[C:4]=2[O:3][C:2]1([CH3:18])[CH3:1])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1
Reactant: Cl[Mg]Cc1ccccc1
Reactant: Cc1c(C)c2c(c(C)c1NC=O)OC(C)(C)C2=O
Solvent: C1CCOC1
Solvent: O
Product: Cc1c(C)c2c(c(C)c1NC=O)OC(C)(C)C2(O)Cc1ccccc1
Temperature: 25 °C
Reaction time: 2 h

Procedure:
A solution of (2,2,4,5,7-pentamethyl-3-oxo-2,3-dihydro-1-benzofuran-6-yl)formamide obtained in Reference Example 73 (600 mg, 2.43 mmol) in THF (5 mL) was added dropwise to a solution of benzylmagnesium chloride (a 2.0 M THF solution, 10.0 mL, 20.0 mmol) in THF (20 mL) under argon atmosphere, and the mixture was stirred at room temperature for 2 hours. Water was added thereto, which was extracted with ethyl acetate. The organic layer was washed with 1 N hydrochloric acid, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=4:1) to obtain (3-benzyl-3-hydroxy-2,2,4,5,7-pentamethyl-2,3-dihydro-1-benzofuran-6-yl)formamide. To a mixture of said compound with trifluoroacetic acid (5 mL) was added triethylsilane (0.5 mL, 3.2 mmol) with ice-cooling, and the mixture was stirred at room temperature for 30 minutes. The reaction solution was concentrated under reduced pressure, and to the residue was added a saturated sodium hydrogen carbonate solution to alkalify the aqueous layer, which was extracted with ethyl acetate. The organic layer was washed with water and saturated brine, dried over anhydrous sodium sulfate and then concentrated under reduced pressure. To a solution of the obtained residue in methanol (20 mL) was added concentrated hydrochloric acid (10 ml), and the mixture was heated under reflux for 2 hours. The solvent was distilled off under reduced pressure and the residue was neutralized with a 12 N aqueous sodium hydroxide solution. After extracting with ethyl acetate, the organic layer was washed with water and saturated brine, dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate 4:1) to obtain 440 mg (yield 62%) of the title compound. Melting point: 75-76° C. (ethyl acetate-hexane).
Reaction SMILES: [Cl:1][C:2]1[CH:20]=[C:19]([C:21]([F:24])([F:23])[F:22])[CH:18]=[C:17]([Cl:25])[C:3]=1[O:4][C:5]1[CH:6]=[CH:7][C:8]([N+:14]([O-:16])=[O:15])=[C:9]([CH:13]=1)[C:10]([OH:12])=O.CN(C)C=O.S(Cl)([Cl:33])=O.C>ClCCCl>[Cl:1][C:2]1[CH:20]=[C:19]([C:21]([F:24])([F:22])[F:23])[CH:18]=[C:17]([Cl:25])[C:3]=1[O:4][C:5]1[CH:6]=[CH:7][C:8]([N+:14]([O-:16])=[O:15])=[C:9]([CH:13]=1)[C:10]([Cl:33])=[O:12]
Reactant: O=C(O)c1cc(Oc2c(Cl)cc(C(F)(F)F)cc2Cl)ccc1[N+](=O)[O-]
Reactant: O=S(Cl)Cl
Solvent: ClCCCl
Solvent: CN(C)C=O
Product: O=C(Cl)c1cc(Oc2c(Cl)cc(C(F)(F)F)cc2Cl)ccc1[N+](=O)[O-]
Yield: 78.5 %

Procedure:
79.2 g of 5-(2,6-dichloro-4-trifluoromethyl-phenoxy)-2-nitro-benzoic acid and 0.5 ml of dimethylformamide were introduced into 150 ml of 1,2-dichloro-ethane. 28.6 g of thionyl chloride were added dropwise at 60° to 65° C. and the mixture was heated under reflux for 1 hour. The solution was clarified with active charcoal and filtered through kieselguhr. The mother liquor was concentrated and the residue was recrystallized from cyclohexane. 65.1 g (79% of theory) of 5-(2,6-dichloro-4-trifluoromethylphenoxy)-2-nitro-benzoic acid chloride, of melting point 95° C., were obtained.
Reaction SMILES: [CH:1](=[N:8][N:9]([C:18]1[CH:27]=[CH:26][CH:25]=[CH:24][C:19]=1[C:20](OC)=[O:21])[C:10](=[O:17])[CH2:11][C:12]([O:14][CH2:15][CH3:16])=[O:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[O-]CC.[Na+].O.Cl>C(O)C>[OH:21][C:20]1[C:19]2[C:18](=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:9]([N:8]=[CH:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[C:10](=[O:17])[C:11]=1[C:12]([O:14][CH2:15][CH3:16])=[O:13]
Reactant: CCOC(=O)CC(=O)N(N=Cc1ccccc1)c1ccccc1C(=O)OC
Agent: CC[O-]
Agent: Cl
Agent: [Na+]
Solvent: CCO
Solvent: O
Product: CCOC(=O)c1c(O)c2ccccc2n(N=Cc2ccccc2)c1=O
Temperature: 50 °C
Yield: 91.9 %

Procedure:
The product of Example 226B (5.17 g, 14.59 mmol) in ethanol (100 mL) was reacted with sodium ethoxide (21% by weight in ethanol, 5.50 mL, 14.60 mmol) at 25° C. then heated at 50° C. for 1 hour. After cooling to 25° C., the reaction mixture was poured into water, acidified to pH 4 with 1M hydrochloric acid and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, filtered and the solvent removed under vacuum to give the title compound (4.51 g, 96%). MS (DCI) m/z 323 (M+H)+. 1H NMR (300 MHz, DMSO-d6) δ ppm 3.73 (s, 3 H) 7.21 (m, 1 H) 7.56 (m, 5 H) 7.95 (m, 2 H) 8.03 (d, J=7.72 Hz, 1 H) 9.08 (s, 1 H).
Reaction SMILES: [CH3:1][C:2]1[C:11]([Br:12])=[CH:10][CH:9]=[C:8]2[C:3]=1[C:4](=O)[CH2:5][CH2:6][S:7]2.Cl.[CH3:15][O:16][NH2:17].C(O)C>N1C=CC=CC=1>[CH3:15][O:16][N:17]=[C:4]1[C:3]2[C:8](=[CH:9][CH:10]=[C:11]([Br:12])[C:2]=2[CH3:1])[S:7][CH2:6][CH2:5]1
Reactant: CON
Reactant: Cc1c(Br)ccc2c1C(=O)CCS2
Agent: Cl
Solvent: c1ccncc1
Solvent: CCO
Product: CON=C1CCSc2ccc(Br)c(C)c21
Yield: 93.2 %

Procedure:
3.0 Grams (12 mmol) of 5-methyl-6-bromothiochroman-4-one and 1.9 g (23 mmol) of O-methylhydroxylamine hydrochloride were refluxed under heat in a mixed solvent containing 10 ml of ethanol and 10 ml of pyridine for 30 minutes. The solvents were distilled off under reduced pressure, and then 50 ml of 5% hydrochloric acid was added to form a solid. The solid was recovered by filtration, washed with water and dried to give 3.2 g of 4-methoxyimino-5-methyl-6-bromothiochroman (yield 93%).
Reaction SMILES: [CH2:1]([O:3][C:4]([C:6]1[C:7]2[CH:15]=[N:14][NH:13][C:8]=2[N:9]=[C:10](O)[CH:11]=1)=[O:5])[CH3:2].P(Cl)(Cl)([Cl:18])=O>>[CH2:1]([O:3][C:4]([C:6]1[C:7]2[CH:15]=[N:14][NH:13][C:8]=2[N:9]=[C:10]([Cl:18])[CH:11]=1)=[O:5])[CH3:2]
Reactant: O=P(Cl)(Cl)Cl
Reactant: CCOC(=O)c1cc(O)nc2[nH]ncc12
Product: CCOC(=O)c1cc(Cl)nc2[nH]ncc12
Temperature: 110 °C
Yield: 21 %

Procedure:
A mixture of 6-hydroxy-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid ethyl ester (116.4 g, 0.562 mol) and phosphorus oxychloride (500 mL) was heated at 110° C. for 6 hours then cooled to room temperature before being evaporated under reduced pressure. The residue was taken up in EtOAc and the precipitate filtered. The filtrate was neutralized using triethylamine (500 mL) and the resulting salt filtered. The filtrate was concentrated under vacuum and the residue subjected to silica gel column chromatography using a 9/1 mixture of toluene/EtOAc to afford the title compound as a yellow solid (26.3 g, 21%).
Reaction SMILES: [Cl:1][C:2]1[N:3]=[C:4](Cl)[C:5]2[CH:10]=[C:9]([CH3:11])[S:8][C:6]=2[N:7]=1.[CH2:13]1[O:23][C:22]2[CH:21]=[CH:20][C:17]([CH2:18][NH2:19])=[CH:16][C:15]=2[O:14]1.C(N(CC)CC)C>ClCCl>[Cl:1][C:2]1[N:3]=[C:4]([NH:19][CH2:18][C:17]2[CH:20]=[CH:21][C:22]3[O:23][CH2:13][O:14][C:15]=3[CH:16]=2)[C:5]2[CH:10]=[C:9]([CH3:11])[S:8][C:6]=2[N:7]=1
Reactant: NCc1ccc2c(c1)OCO2
Reactant: Cc1cc2c(Cl)nc(Cl)nc2s1
Solvent: CCN(CC)CC
Solvent: ClCCl
Product: Cc1cc2c(NCc3ccc4c(c3)OCO4)nc(Cl)nc2s1
Temperature: 25 °C

Procedure:
A solution of 2,4-dichloro-6-methyl-thieno-[2,3-d]-pyrimidine (3.29 g) in dichloromethane (30 ml) is charged with 3,4-methylenedioxybenzylamine ("A") (3.02 g). Triethylamine (1.52 g) is added, and the mixture is stirred at room temperature. The solvent is removed, and the usual workup yields 2-chloro-6-methyl-4-(3,4-methylenedioxybenzylamino)-thieno-[2,3-d]-pyrimidine (3.38 g) Mp. 162° C.
Reaction SMILES: [O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[N:11]=[C:10]([NH2:12])[N:9]=[C:8]2[NH:13][N:14]=[CH:15][C:7]=12.[H-].[Na+].[N+:18]([C:21]1[CH:22]=[C:23]([CH:26]=[CH:27][CH:28]=1)[CH2:24]Br)([O-:20])=[O:19].O>CN(C=O)C>[O:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[N:11]=[C:10]([NH2:12])[N:9]=[C:8]2[N:13]([CH2:24][C:23]3[CH:26]=[CH:27][CH:28]=[C:21]([N+:18]([O-:20])=[O:19])[CH:22]=3)[N:14]=[CH:15][C:7]=12
Reactant: Nc1nc(-c2ccco2)c2cn[nH]c2n1
Reactant: O=[N+]([O-])c1cccc(CBr)c1
Agent: [H-]
Agent: [Na+]
Solvent: O
Solvent: CN(C)C=O
Product: Nc1nc(-c2ccco2)c2cnn(Cc3cccc([N+](=O)[O-])c3)c2n1
Reaction time: 0.33 h
Yield: 46.8 %

Procedure:
A solution of 4-(2-furyl)-1H-pyrazolo[3,4-d]pyrimidine-6-amine (603 mg, 3 mmol) in DMF (3 mL) at 0° C. was treated with NaH (120 mg, 60%, 3 mmol), stirred for 20 min, treated with 3-nitrobenzyl bromide (648 mg, 3 mmol), stirred at room temperature for 1 h, poured into water, extracted with EtOAc, dried (MgSO4) and concentrated in vacuo. The crude product was purified by chromatography (EtOAc:Heptane, 1:1) to give the title compound as a cream solid (472 mg, 47%). A portion of the solid (70 mg) was suspended in MeOH, treated with HCl in dioxan (4-M, 1 mL), diluted with diethyl ether and filtered to give the hydrochloride salt of the title compound (79 mg, 100%) as a yellow solid.
Reaction SMILES: CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.C1C=CC2N(O)N=NC=2C=1.[CH3:33][N:34]1[CH2:39][CH2:38][N:37]([CH:40]2[CH2:45][CH2:44][NH:43][CH2:42][CH2:41]2)[CH2:36][CH2:35]1.[CH2:46]([C:48]1[CH:49]=[C:50]([CH2:56][CH:57]([NH:61][C:62]([N:64]2[CH2:69][CH2:68][CH:67]([N:70]3[CH2:79][C:78]4[C:73](=[CH:74][CH:75]=[CH:76][CH:77]=4)[NH:72][C:71]3=[O:80])[CH2:66][CH2:65]2)=[O:63])[C:58](O)=[O:59])[CH:51]=[CH:52][C:53]=1[CH2:54][CH3:55])[CH3:47]>C1COCC1.C(N(CC)CC)C>[CH2:46]([C:48]1[CH:49]=[C:50]([CH:51]=[CH:52][C:53]=1[CH2:54][CH3:55])[CH2:56][CH:57]([NH:61][C:62]([N:64]1[CH2:69][CH2:68][CH:67]([N:70]2[CH2:79][C:78]3[C:73](=[CH:74][CH:75]=[CH:76][CH:77]=3)[NH:72][C:71]2=[O:80])[CH2:66][CH2:65]1)=[O:63])[C:58]([N:43]1[CH2:44][CH2:45][CH:40]([N:37]2[CH2:38][CH2:39][N:34]([CH3:33])[CH2:35][CH2:36]2)[CH2:41][CH2:42]1)=[O:59])[CH3:47]
Reactant: CN1CCN(C2CCNCC2)CC1
Reactant: CCc1ccc(CC(NC(=O)N2CCC(N3Cc4ccccc4NC3=O)CC2)C(=O)O)cc1CC
Agent: CN(C)C(On1nnc2ccccc21)=[N+](C)C
Agent: F[B-](F)(F)F
Agent: On1nnc2ccccc21
Solvent: CCN(CC)CC
Solvent: C1CCOC1
Product: CCc1ccc(CC(NC(=O)N2CCC(N3Cc4ccccc4NC3=O)CC2)C(=O)N2CCC(N3CCN(C)CC3)CC2)cc1CC
Temperature: 40 °C
Reaction time: 2 h

Procedure:
336 mg (1.05 mmol) of TBTU, 161 mg (1.05 mmol) of HOBt, 0.75 mL of triethylamine and 192 mg (1.05 mmol) of 1-methyl-4-piperidin-4-yl-piperazine were added to a solution of 500 mg (1.05 mmol) of 3-(3,4-diethyl-phenyl)-2-{[4-(2-oxo-1,4-dihydro-2H-quinazolin-3-yl)-piperidine-1-carbonyl]-amino}-propionic acid in 100 mL of THF, and stirred for 4 h at RT and 2 h at 40° C. The solvent was removed in vacuo, the residue taken up in 40 mL of saturated NaHCO3 solution, exhaustively extracted with EtOAc and dried over MgSO4. After elimination of the desiccant and solvent the crude product was purified by chromatography (silica gel, MeOH/NH3 100:3).
Reaction SMILES: [CH2:1]([N:4]1[C:9](=[O:10])[CH:8]=[C:7]([O:11][CH2:12][CH2:13][CH3:14])[N:6]([CH2:15][C:16]2[CH:21]=[CH:20][C:19]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[C:28]3[NH:32][N:31]=[N:30][N:29]=3)=[CH:18][CH:17]=2)[C:5]1=[O:33])[CH2:2][CH3:3].CI.[C:36](=O)(O)[O-].[Na+]>CN(C=O)C>[CH3:36][N:29]1[C:28]([C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][C:22]=2[C:19]2[CH:20]=[CH:21][C:16]([CH2:15][N:6]3[C:7]([O:11][CH2:12][CH2:13][CH3:14])=[CH:8][C:9](=[O:10])[N:4]([CH2:1][CH2:2][CH3:3])[C:5]3=[O:33])=[CH:17][CH:18]=2)=[N:32][N:31]=[N:30]1
Reactant: O=C([O-])O
Reactant: CCCOc1cc(=O)n(CCC)c(=O)n1Cc1ccc(-c2ccccc2-c2nnn[nH]2)cc1
Agent: [Na+]
Solvent: CN(C)C=O
Solvent: CI
Product: CCCOc1cc(=O)n(CCC)c(=O)n1Cc1ccc(-c2ccccc2-c2nnnn2C)cc1
Temperature: 25 °C
Reaction time: 2 h
Yield: 87.3 %

Procedure:
A mixture of 3-propyl-6-propyloxy-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]pyrimidine-2,4(1H,3H)-dione (0.1 g), methyl iodide (50 mg) and sodium bicarbonate (25 mg) in DMF (5 ml) was stirred at room temperature for 2 hours. The reaction mixture was concentrated to dryness and the residue was dissolved in CHCl3 -water. The chloroform layer was dried and evaporated in vacuo to give a syrup. The syrup was column-chromatographed on silica gel to give a colorless syrup (90 mg, 86%).