Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.F[C:9]1[CH:30]=[CH:29][C:12]([C:13]([C:15]2[CH:20]=[CH:19][C:18]([C:21]#[C:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[CH:17][CH:16]=2)=[O:14])=[CH:11][CH:10]=1.C1(C)C=CC=CC=1>CC(N(C)C)=O>[O:7]([C:9]1[CH:30]=[CH:29][C:12]([C:13]([C:15]2[CH:20]=[CH:19][C:18]([C:21]#[C:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[CH:17][CH:16]=2)=[O:14])=[CH:11][CH:10]=1)[C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1
Reactant: O=C(c1ccc(F)cc1)c1ccc(C#Cc2ccccc2)cc1
Reactant: Oc1ccccc1
Solvent: Cc1ccccc1
Solvent: CC(=O)N(C)C
Product: O=C(c1ccc(C#Cc2ccccc2)cc1)c1ccc(Oc2ccccc2)cc1
Temperature: 23 °C
Yield: 96.3 %

Procedure:
A 100 mL flask equipped with nitrogen inlet, overhead stirring assembly, Dean-Stark trap, and reflux condenser was charged with phenol (0.35 g, 0.0038 mol), 4-fluoro-4'-phenylethynylbenzophenone (0.10 g, 0.0038 mol) potassium carbonate (0.39 g, 0.003 mol), 25 mL of toluene, and 50 mL of DMAc. The mixture was heated to reflux and water was removed by azeotropicdistillation, followed by the removal of toluene over a 20 hour period. Thereaction was cooled to 23° C., and the mixture was poured into 1 L of acidic (HCl) water. The precipitate was collected by filtration to afford 1.37 g (96%) of 4-phenoxy-4'-phenylethynylbenzophenone as a white powder: mp 165.5° C. IR (KBr): 2216 cm-1 (ethynyl), 1650 cm-1 (carbonyl): 1H-NMR (CDCl3): 7.8-6.8 pp, (m H aromatic). Anal Calcd. for C27H18O2: %C=86.61, %H=4.85. Found: %C=86.46, %H=4.68. The structure of this compound is given below: ##STR10##The DSC thermogram of this compound is presented in FIG. 3.
Reaction SMILES: C(OP([CH:9]([CH2:17][C:18]1[N:19]=[CH:20][S:21][CH:22]=1)[C:10]([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11])(OCC)=O)C.[H-].[Na+].[CH2:25]=O>O1CCCC1>[S:21]1[CH:22]=[C:18]([CH2:17][C:9](=[CH2:25])[C:10]([O:12][C:13]([CH3:14])([CH3:15])[CH3:16])=[O:11])[N:19]=[CH:20]1
Reactant: CCOP(=O)(OCC)C(Cc1cscn1)C(=O)OC(C)(C)C
Reactant: C=O
Agent: [H-]
Agent: [Na+]
Solvent: C1CCOC1
Product: C=C(Cc1cscn1)C(=O)OC(C)(C)C
Temperature: 25 °C
Reaction time: 0.17 h
Yield: 92 %

Procedure:
To a stirred solution of tert-butyl 2-(diethoxyphosphoryl)-3-(1,3-thiazol-4-yl)propanoate (step 1, 7.17 g, 20.5 mmol) in tetrahydrofuran (100 mL) was added sodiumhydride (60% dispersion in mineral oil, 820 mg, 20.5 mmol) at 0° C. under nitrogen. After 10 min, to the mixture was added paraformaldehyde (1.85 g, 61.5 mmol) and the mixture was stirred at room temperature for 45 min. The mixture was quenched with aqueous sodium hydrogen carbonate and extracted with ethyl acetate. The combined organic layer washed with brine, dried over sodium sulfate, and evaporated. The residue was purified by column chromatography on silica gel eluting with hexane/ethyl acetate (3/1) to afford 4.25 g (92%) of the title compound as a colorless oil:
Reaction SMILES: [CH2:1]([C:5]([C:14]1[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:15]=1[Cl:21])([CH2:8][N:9]1[CH:13]=[N:12][CH:11]=[N:10]1)[C:6]#[N:7])[CH2:2][CH2:3][CH3:4].Br.[OH-:23].[NH4+].Cl>C(OCC)(=O)C>[Cl:21][C:15]1[CH:16]=[C:17]([Cl:20])[CH:18]=[CH:19][C:14]=1[C:5]([CH2:8][N:9]1[CH:13]=[N:12][CH:11]=[N:10]1)([CH2:1][CH2:2][CH2:3][CH3:4])[C:6]([NH2:7])=[O:23]
Reactant: CCCCC(C#N)(Cn1cncn1)c1ccc(Cl)cc1Cl
Reactant: [OH-]
Agent: Br
Agent: Cl
Agent: [NH4+]
Solvent: CCOC(C)=O
Product: CCCCC(Cn1cncn1)(C(N)=O)c1ccc(Cl)cc1Cl
Yield: 56.3 %

Procedure:
To a 250 mL flask was charged 38.16 g (0.119 mole) of alpha-n-butyl-alpha-(2,4-dichlorophenyl)-1H-1,2,4-triazole-1-propanenitrile followed by 100 mL (0.63 moles) of 48% hydrobromic acid. The mixture was stirred at reflux for 48 hours after which GLC indicated disappearance of the starting material. The reaction was cooled to room temperature and neutralized with concentrated ammonium hydroxide (100 mL) to pH 8 and then to neutral pH with concentrated hydrochloric acid. A gummy oil formed which was diluted with 200 mL of ethyl acetate. The organic phase (3×200 mL ethyl acetate) was washed with 100 mL of water (3×). The organic phase was dried and concentrated to give a tan solid which was recrystallized from ethyl ether. The product was filtered and gave 22.78 g (56.3% yield) of a solid, melting point 170°-172° C.
Reaction SMILES: [F:1][CH:2]([F:13])[O:3][C:4]1[C:5]([N+:10]([O-])=O)=[N:6][CH:7]=[CH:8][CH:9]=1>C(O)C.C(O)(=O)C>[F:13][CH:2]([F:1])[O:3][C:4]1[C:5]([NH2:10])=[N:6][CH:7]=[CH:8][CH:9]=1
Reactant: O=[N+]([O-])c1ncccc1OC(F)F
Solvent: CC(=O)O
Solvent: CCO
Product: Nc1ncccc1OC(F)F
Temperature: 100 °C
Reaction time: 8 h
Yield: 65.9 %

Procedure:
[step 2] 3-(Difluoromethoxy)-2-nitropyridine (450 mg, 2.37 mmol) obtained in step 1 was dissolved in ethanol (2 mL)-acetic acid (2 mL), reduced iron (397 mg, 7.10 mmol) was added, and the mixture was stirred at 100° C. overnight. Since the starting material did not disappear, reduced iron (397 mg, 7.10 mmol) was added, and the mixture was further stirred at 100° C. overnight. The mixture was filtered through celite, and the filtrate was concentrated under reduced pressure. To the obtained residue was added saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted 3 times with ethyl acetate. The combined organic layers were dried over anhydrous magnesium sulfate, and purified by silica gel column chromatography (chloroform/methanol=9/1 v/v) to give 3-(difluoromethoxy)pyridin-2-amine (250 mg, 66%).
Reaction SMILES: [N:1]([C:4]1[CH:9]=[CH:8][C:7]([F:10])=[CH:6][CH:5]=1)=[N+:2]=[N-:3].[CH:11]([N:14]1[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]1)=[CH:12][CH3:13]>CCCCCC>[F:10][C:7]1[CH:8]=[CH:9][C:4]([N:1]2[CH:11]([N:14]3[CH2:19][CH2:18][CH2:17][CH2:16][CH2:15]3)[CH:12]([CH3:13])[N:3]=[N:2]2)=[CH:5][CH:6]=1
Reactant: [N-]=[N+]=Nc1ccc(F)cc1
Reactant: CC=CN1CCCCC1
Solvent: CCCCCC
Product: CC1N=NN(c2ccc(F)cc2)C1N1CCCCC1
Temperature: 25 °C
Reaction time: 144 h
Yield: 21 %

Procedure:
Prepared in analogy to EP 0 433 842 A2. A mixture of 1-azido-4-fluoro-benzene (2.80 g, 20 mmol) and 1-(1-propenyl)-piperidine (18%, 14.2 g, 20 mmol) was stirred under ice cooling (slowly exothermic in the beginning) and at room temperature for 144 h in the absence of light. Hexane was then added to the brown solutions and a solid formed which was filtered off, washed with hexane and dried in hv to give the title product (1.1 g) as a light pink solid. The filtrate was then evaporated and purification by chromatography (silica, 10 to 50% ethyl acetate in heptane) afforded the title compound (4.34 g) as a light yellow solid. Total yield (5.44 g, 98%). MS: m/e=263.1 [M+H]+.
Reaction SMILES: [NH2:1][CH2:2][CH2:3][CH2:4][C:5]([OH:7])=[O:6].[O:8](C(OC(C)(C)C)=O)[C:9]([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=O.C(N(CC)CC)C>CO>[C:9]([NH:1][CH2:2][CH2:3][CH2:4][C:5]([OH:7])=[O:6])([O:11][C:12]([CH3:15])([CH3:14])[CH3:13])=[O:8]
Reactant: CC(C)(C)OC(=O)OC(=O)OC(C)(C)C
Reactant: NCCCC(=O)O
Solvent: CO
Solvent: CCN(CC)CC
Product: CC(C)(C)OC(=O)NCCCC(=O)O
Temperature: 60 °C
Reaction time: 12 h
Yield: 70.9 %

Procedure:
NH2—(CH2)3—COOH (5.00 g, 48.5 mmol), (BOC)2O (11.6 g, 53.4 mmol) and triethylamine (5.39 g, 53.4 mmol) were dissolved in 200 mL of methanol, and the mixture was stirred at 60° C. for 12 hours. After the reaction completed, methanol was removed under reduced pressure, and the obtained material was redissolved in 100 mL of ethyl acetate. Then, the resultant solution was subjected to separation using 0.2 mol/l HCl (twice) and water (twice), and dehydrating was carried out with anhydrous sodium sulfate. After that, recrystallization with hexane at 4° C. and collection using a glass filter (G6) were performed, thereby obtaining Boc-NH—(CH2)3—COOH (6.98 g, 34.4 mmol, yield: 71%).
Reaction SMILES: S([O-])([O:4][CH2:5][C:6]([O:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])([O:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH3:14])[CH3:7])(=O)=O.[Na+].[CH2:24]([OH:30])[CH2:25][CH2:26][CH2:27][CH2:28][CH3:29].O>C1(C)C=CC=CC=1.CC1C=CC(S(O)(=O)=O)=CC=1>[CH2:9]([O:8][C:6]([O:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH3:21])([CH3:7])[C:5]([O:30][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29])=[O:4])[CH2:10][CH2:11][CH2:12][CH2:13][CH3:14]
Reactant: CCCCCCO
Reactant: CCCCCCOC(C)(COS(=O)(=O)[O-])OCCCCCC
Agent: Cc1ccc(S(=O)(=O)O)cc1
Agent: [Na+]
Solvent: Cc1ccccc1
Solvent: O
Product: CCCCCCOC(=O)C(C)(OCCCCCC)OCCCCCC
Yield: 84 %

Procedure:
To a solution of methyl pyruvate 1 (10.0 g, 98.0 mmol) in toluene (100 mL) is added 1-hexanol 2 (40.1 g, 392 mmol) and p-TsOH (186 mg, 0.98 mmol). The mixture is heated to reflux for 10 hours with azeotropic removal of water from the reaction mixture. The reaction is quenched with saturated NaHCO3 (100 mL), and the reaction mixture is extracted with ethyl acetate (2×100 mL). The combined organic layers are washed with brine (100 mL) and dried over anhydrous sodium sulfate. The solvent is removed and the residue is purified by silica gel chromatography (1→10% ethyl acetate/hexane) to give hexyl 2,2-bis(hexyloxy)propanoate 3 (29.5 g, 84%) as a colorless oil: Rf (15% EtOAc/hexane)=0.53; IR (thin film, cm−1) 2956, 2930, 2860, 1746 (C═O), 1467, 1280, 1137, 1062. 1H NMR (600 MHz, CDCl3) δ 4.14 (t, J=7.2 Hz, 2H), 3.48 (ddd, J=9.0, 7.2, 6.6 Hz, 2H), 3.35 (ddd, J=9.0, 7.2, 6.6 Hz, 2H), 1.65-1.63 (m, 2H), 1.59-1.54 (m, 4H), 1.49 (s, 3H), 1.35-1.24 (m, 18H), 0.86 (t, J=7.2 Hz, 9H); 13C NMR (150 MHz, CDCl3) δ 170.2, 99.5, 65.4, 62.6, 31.7, 31.3, 29.7, 28.5, 25.8, 25.5, 22.6, 22.5, 21.9, 14.0, 13.9.
Reaction SMILES: Cl.Cl.[CH3:3][N:4]1[CH:12]=[C:11]2[C:6]([CH:7]=[CH:8][CH:9]=[C:10]2[C@@H:13]2[CH2:15][C@H:14]2[CH2:16][NH2:17])=[N:5]1.C(N(CC)CC)C.[C:25](OC(=O)C)(=[O:27])[CH3:26]>O1CCCC1>[CH3:3][N:4]1[CH:12]=[C:11]2[C:6]([CH:7]=[CH:8][CH:9]=[C:10]2[C@@H:13]2[CH2:15][C@H:14]2[CH2:16][NH:17][C:25](=[O:27])[CH3:26])=[N:5]1
Reactant: Cn1cc2c([C@@H]3C[C@H]3CN)cccc2n1
Reactant: CC(=O)OC(C)=O
Agent: Cl
Solvent: CCN(CC)CC
Solvent: C1CCOC1
Product: CC(=O)NC[C@@H]1C[C@H]1c1cccc2nn(C)cc12
Temperature: 25 °C
Reaction time: 1 h
Yield: 93 %

Procedure:
To a solution of 1-[(1R,2R)-2-(2-methyl-2H-indazol-4-yl)cyclopropyl]methanamine dihydrochloride (2.00 g, 7.29 mmol) and triethylamine (4.07 mL, 29.2 mmol) in tetrahydrofuran (70 mL) was added acetic anhydride (828 μL, 8.75 mmol), and the mixture was stirred at room temperature for 1 hr. The reaction solution was concentrated under reduced pressure and the residue was purified by silica gel column chromatography (methanol/ethyl acetate=5/95→20/80) to give the title compound (1.65 g, yield 93%).
Reaction SMILES: [F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:14][CH2:13][NH:12][CH2:11][CH2:10]3)=[N:7][S:8][C:4]=2[CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:24][CH2:25][N:26]1[C:30](=[O:31])[C:29]2=[CH:32][CH:33]=[CH:34][CH:35]=[C:28]2[C:27]1=[O:36]>C(#N)C>[F:1][C:2]1[CH:16]=[CH:15][C:5]2[C:6]([CH:9]3[CH2:10][CH2:11][N:12]([CH2:24][CH2:25][N:26]4[C:30](=[O:31])[C:29]5=[CH:32][CH:33]=[CH:34][CH:35]=[C:28]5[C:27]4=[O:36])[CH2:13][CH2:14]3)=[N:7][S:8][C:4]=2[CH:3]=1
Reactant: O=C1c2ccccc2C(=O)N1CCBr
Reactant: Fc1ccc2c(C3CCNCC3)nsc2c1
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CC#N
Product: O=C1c2ccccc2C(=O)N1CCN1CCC(c2nsc3cc(F)ccc23)CC1

Procedure:
A stirred mixture of 6-fluoro-3-(4-piperidinyl)-1,2-benzisothiazole (4.72 g, 0.02 mole), potassium carbonate (4.14 g, 0.03 mole) and N-(2-bromoethyl)phthalimide (6.35 g, 0.0025 mole) in 200 ml of acetonitrile is heated at reflux for 4 hours. The solids are then removed by filtration and the filtrate is concentrated under reduced pressure. The residue is purified by chromatography over silica gel to provide N-[2-[4-(6-fluoro-1,2-benzisothiazol-3-yl)-1-piperidinyl]ethyl]phthalimide.
Reaction SMILES: [F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[CH2:7][C:6]([CH3:11])=[C:5]2[CH2:12][C:13]([OH:15])=[O:14].[CH3:16][O:17][C:18]1[CH:19]=[C:20]([CH:23]=[C:24]([O:28][CH3:29])[C:25]=1[O:26][CH3:27])[CH:21]=O.C[O-].[Na+].Cl>CO>[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)/[C:7](=[CH:21]\[C:20]1[CH:23]=[C:24]([O:28][CH3:29])[C:25]([O:26][CH3:27])=[C:18]([O:17][CH3:16])[CH:19]=1)/[C:6]([CH3:11])=[C:5]2[CH2:12][C:13]([OH:15])=[O:14]
Reactant: COc1cc(C=O)cc(OC)c1OC
Reactant: CC1=C(CC(=O)O)c2cc(F)ccc2C1
Agent: C[O-]
Agent: Cl
Agent: [Na+]
Solvent: CO
Product: COc1cc(/C=C2/C(C)=C(CC(=O)O)c3cc(F)ccc32)cc(OC)c1OC
Temperature: 0 °C
Reaction time: 6 h

Procedure:
5-fluoro-2-methyl-3-indenylacetic acid (15 g, 0.072 mol), 3,4,5-trimethoxybenzaldehyde (17.85 g, 0.091 mol) and sodium methoxide (13.0 g, 0.24 mol) are heated in methanol (200 ml) at 60° C. under nitrogen with stirring for 6 hours. After cooling, the reaction mixture is poured into 750 ml of ice-water, and is acidified with 2.5 N hydrochloric acid. The collected solid is triturated with a little ether to produce (Z)-5-fluoro-2-methyl-1-(3,4,5-trimethoxybenzylidene)-3-indenylacetic acid (M .P. 166-169° C.).
Reaction SMILES: [F:1][C:2]([F:12])([F:11])[C:3]1[CH:9]=[C:8]([Br:10])[CH:7]=[CH:6][C:4]=1[NH2:5].[C:13](OC(=O)C)(=[O:15])[CH3:14]>O1CCCC1>[Br:10][C:8]1[CH:7]=[CH:6][C:4]([NH:5][C:13](=[O:15])[CH3:14])=[C:3]([C:2]([F:1])([F:11])[F:12])[CH:9]=1
Reactant: CC(=O)OC(C)=O
Reactant: Nc1ccc(Br)cc1C(F)(F)F
Solvent: C1CCOC1
Product: CC(=O)Nc1ccc(Br)cc1C(F)(F)F
Temperature: 0 °C
Reaction time: 0.17 h
Yield: 89.9 %

Procedure:
A solution of 2-(trifluoromethyl)-4-bromoaniline (4.8 g, 20 mmol) in dry tetrahydrofuran (20 mL) was cooled to 0° C. and then treated with acetic anhydride (8.2 g, 80 mmol). The reaction mixture was stirred at 0° C. for 10 min and then allowed to warm to 25° C. The reaction mixture was stirred at 25° C. for 2 h, at which time, thin layer chromatography analysis of the reaction mixture indicated the absence of starting material. The reaction mixture was then concentrated in vacuo. The crude residue precipitated from diethyl ether (50 mL) and hexanes (50 mL). The solid was collected by filtrated and washed with hexanes to afford N-(4-bromo-2-trifluoromethyl-phenyl)-acetamide (5.07 g, 90%) as an amorphous white solid: EI-HRMS m/e calcd for C9H7BrF3NO (M+) 281.8352, found 281.8348.
Reaction SMILES: [CH3:1][CH:2]([NH2:5])[CH2:3][OH:4].[OH:6][CH2:7][C:8](=O)[CH3:9]>CO.[Pt](=O)=O>[OH:4][CH2:3][CH:2]([NH:5][CH:8]([CH3:9])[CH2:7][OH:6])[CH3:1]
Reactant: CC(N)CO
Reactant: CC(=O)CO
Agent: O=[Pt]=O
Solvent: CO
Product: CC(CO)NC(C)CO
Reaction time: 18 h

Procedure:
Platinum dioxide (40 mg) was added to a solution of dl-2-amino-1-propanol (6.4 ml) and hydroxyacetone (7.0 g) in methanol (75 ml) over 3 A molecular sieves. The reaction mixture was hydrogenated at 60 psi. for 18 hours, after which time the catalyst was filtered off and the solvent removed under reduced pressure. The crude product was purified by distillation, b.pt. 94° C.@0.2 mbar to afford 2-[(2-hydroxy-1-methylethyl)amino]-1-propanol (3.66 g) as a yellow oil.
Reaction SMILES: [Br:1][C:2]1[CH:8]=[C:7]([N+:9]([O-])=O)[C:5]([NH2:6])=[C:4]([CH3:12])[CH:3]=1.[Cl-].[Cl-].[Ca+2]>CCO.O.[Fe]>[Br:1][C:2]1[CH:8]=[C:7]([NH2:9])[C:5]([NH2:6])=[C:4]([CH3:12])[CH:3]=1
Reactant: Cc1cc(Br)cc([N+](=O)[O-])c1N
Agent: [Fe]
Agent: [Ca+2]
Agent: [Cl-]
Solvent: O
Solvent: CCO
Product: Cc1cc(Br)cc(N)c1N
Temperature: 25 °C
Yield: 91.9 %

Procedure:
To a stirred solution of compound 4-bromo-2-methyl-6-nitroaniline (5.0 g) in EtOH (85 ml) and water (43 ml) were added iron powder (6.0 g) and CaCl2 (4.8 g) at room temperature and the resulting reaction mixture was then heated at reflux for 4 h. The mixture was then cooled to room temperature, filtered through Celite, and washed with EtOH. The filtrate was concentrated and the resulting residue was diluted with DCM. The DCM layer was successively washed with water and brine, dried over Na2SO4 and concentrated in vacuo to give the title compound (4.0 g) as a dark brown solid.
Reaction SMILES: [CH3:1][C:2]([OH:6])([C:4]#[CH:5])[CH3:3].FC(F)(F)C(O)=O.O[C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[N:21]=[CH:20][CH:19]=[CH:18]2.Cl>C(#N)C.[Cu]Cl>[CH3:1][C:2]([O:6][C:15]1[CH:16]=[C:17]2[C:22](=[CH:23][CH:24]=1)[N:21]=[CH:20][CH:19]=[CH:18]2)([CH3:3])[C:4]#[CH:5]
Reactant: Oc1ccc2ncccc2c1
Reactant: C#CC(C)(C)O
Agent: Cl[Cu]
Agent: Cl
Solvent: CC#N
Solvent: O=C(O)C(F)(F)F
Product: C#CC(C)(C)Oc1ccc2ncccc2c1
Temperature: 0 °C
Reaction time: 3 h

Procedure:
A solution of 2-methyl-3-butyn-2-ol (2.45 mL, 25.1 mmol) and 1,8-diazabicyclo-[5.4.0]-7-undecene (4.25 mL, 28.4 mmol) in acetonitrile (15.5 mL) was stirred 0° C. for 30 minutes, and anhydrous trifluoroacetic acid (3.55 mL, 25.1 mmol) was added dropwise. The resulting mixture was added dropwise to a mixed solution of 6-hydroxyquinoline (2.43 g, 16.7 mmol), copper (I) chloride (8.3 mg, 0.0835 mmol), acetonitrile (15.5 mL) and 1,8-diazabicyclo-[5.4.0]-7-undecene (4.25 mL, 28.4 mmol) at 0° C., and stirred at 0° C. for 3 hours. The resulting solution was acidified with 1 mol/L HCl and extracted with ethyl acetate, and the resulting aqueous phase was neutralized with sodium hydrogencarbonate aqueous solution, extracted with ethyl acetate, and dried over anhydrous magnesium sulfate. After distilling off the solvent, the residue was purified by column chromatography (hexane/ethyl acetate=1/1 to 1/3) and the aimed product was obtained.
Reaction SMILES: O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O.[NH:15]([C:22]1[CH:30]=[C:29]([C:31](O)=[O:32])[C:28]([NH:34][C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)=[CH:27][C:23]=1[C:24](O)=[O:25])[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1>>[CH:38]1[CH:39]=[C:40]2[C:31]([C:29]3[C:28]([NH:34][C:35]2=[CH:36][CH:37]=1)=[CH:27][C:23]1[C:24]([C:21]2[C:16]([NH:15][C:22]=1[CH:30]=3)=[CH:17][CH:18]=[CH:19][CH:20]=2)=[O:25])=[O:32]
Reactant: O=C(O)c1cc(Nc2ccccc2)c(C(=O)O)cc1Nc1ccccc1
Agent: O=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3
Product: O=c1c2ccccc2[nH]c2cc3c(=O)c4ccccc4[nH]c3cc12
Temperature: 85 °C

Procedure:
298 parts of polyphosphoric acid, containing 85.0% P2O5, are introduced into a pressure vessel. Then 53.7 parts of 2,5-dianilinoterephthalic acid and 6.0 parts of 2,5-di(4-N-methylcarboxamido-anilino)terephthalic acid are introduced with stirring at from 80 to 90° C. and the mixture is heated at 125° C. for 1 hour during which ring closure takes place to form the quinacridone. The reaction mixture is then introduced into a second pressure vessel where it is hydrolyzed under pressure and with stirring with a mixture of 1342 parts of water and 53 parts of xylene at 140° C. During this hydrolysis the temperature rises to 155° C. The mixture is stirred at 155° C. for 0.5 hour. Then it is cooled to 90° C. and the xylene is distilled off with steam. The mixture is subsequently cooled to 60° C. and the mixed crystal pigment is filtered off with suction, washed to neutrality with water and dried at 80° C.
Reaction SMILES: [NH:1]([C:8]1[CH:16]=[C:15]([C:17](O)=[O:18])[C:14]([NH:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:13][C:9]=1[C:10](O)=[O:11])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.P(=O)(O)(O)O.CO>O>[CH:24]1[CH:25]=[C:26]2[C:17]([C:15]3[C:14]([NH:20][C:21]2=[CH:22][CH:23]=1)=[CH:13][C:9]1[C:10]([C:7]2[C:2]([NH:1][C:8]=1[CH:16]=3)=[CH:3][CH:4]=[CH:5][CH:6]=2)=[O:11])=[O:18]
Reactant: O=C(O)c1cc(Nc2ccccc2)c(C(=O)O)cc1Nc1ccccc1
Agent: O=P(O)(O)O
Solvent: O
Solvent: CO
Product: O=c1c2ccccc2[nH]c2cc3c(=O)c4ccccc4[nH]c3cc12
Temperature: 95 °C
Reaction time: 0.25 h
Yield: 88.3 %

Procedure:
To 300 g of polyphosphoric acid (117% phosphoric acid) heated to 90° C. was added 68.2 g of 2,5-dianilinoterephthalic acid. The reaction mixture was heated at 120°-125° C. for two hours. After the melt was cooled to 95° C., the acid strength was adjusted to 112% by the dropwise addition of phosphoric acid. The resultant melt was stirred for 15 minutes and then slowly poured into 453 g of methanol at 24° C. During the drown, the temperature was allowed to increase to 55° C., with the temperature being controlled by external cooling and adjustment of melt addition rate. The slurry was heated at reflux (68°-72° C.) for one hour, diluted with water, and stirred at 60° C. for 30 minutes. The solid component was collected by filtration and washed with water until acid free. The resultant presscake was reslurried in water. After adjustment of the pH to greater than 7, 7.5 g of 50% sodium hydroxide was added and the resultant slurry was heated at 90° C. for one hour. The slurry was cooled, filtered, and washed with water until alkali free, then reslurried in water. After adjustment of the pH to greater than 9.0-9.5, 3.2 g of a cycloaliphatic carboxylic acid was added. The resultant slurry was heated at about 140°-145° C. for two hours in a closed system (e.g., a pressure reactor), cooled, acidified with phosphoric acid, and stirred. The solid component was collected by filtration and washed with water. The wet cake was dried in an oven at 60° C. to give approximately 54 g of quinacridone as a violet pigment. The quinacridone thus obtained was blended with 0.5 g of N-[3-(N,N-dimethylaminopropyl)] copper phthalocyanine sulfonamide to give a violet pigment.
Reaction SMILES: [NH:1]([C:8]1[CH:16]=[C:15]([C:17](O)=[O:18])[C:14]([NH:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:13][C:9]=1[C:10](O)=[O:11])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.P(=O)(O)(O)O.CO>O.[Fe]>[CH:24]1[CH:25]=[C:26]2[C:17]([C:15]3[C:14]([NH:20][C:21]2=[CH:22][CH:23]=1)=[CH:13][C:9]1[C:10]([C:7]2[C:2]([NH:1][C:8]=1[CH:16]=3)=[CH:3][CH:4]=[CH:5][CH:6]=2)=[O:11])=[O:18]
Reactant: O=C(O)c1cc(Nc2ccccc2)c(C(=O)O)cc1Nc1ccccc1
Agent: [Fe]
Agent: O=P(O)(O)O
Solvent: CO
Solvent: O
Product: O=c1c2ccccc2[nH]c2cc3c(=O)c4ccccc4[nH]c3cc12
Temperature: 85 °C
Reaction time: 0.33 h
Yield: 94.2 %

Procedure:
To 270 g of polyphosphoric acid (117.4% phosphoric acid) heated at 80°-95° C. was added 60 g (0.17 mole) of 2,5-dianilinoterephthalic acid containing about 583 ppm (about 0.63 mmole) of iron. The iron content, relative to 2,5-dianilinoterephthalic acid, was less than 0.4 mole percent. The mixture was heated at 120°-125° C. for four hours. After the viscous solution was cooled to 90°-95° C., the acid strength was adjusted to 107% by the dropwise addition of 75% phosphoric acid (65 g). The resultant melt was stirred for 20 minutes and then slowly poured into a mixture of 60 g of methanol and 40 g of water at 35° C. The temperature of the resultant slurry was allowed to rise during the addition to about 64° C., with the temperature being controlled during addition by external cooling and adjustment of melt addition rate. The slurry was heated at reflux (68°-72° C.) for one hour and diluted with 600 g of water. After the slurry was stirred for 30 minutes, the solid component was collected by filtration and washed with water until acid-free. The resultant presscake was reslurried in 1000 g of water and 5 g of 50% sodium hydroxide, then heated for 85° C. for two hours. After being cooled to 60° C., the slurry was filtered and washed with water until free of alkali. After the presscake was reslurried in 800 g water, a solution containing 37 g of water, 1.6 g of 50% sodium hydroxide, and 3.15 g of naphthenic acid was added. The slurry was heated to 140°-145° C. for two hours in a closed system (e.g., a pressure reactor). After the slurry was cooled to 60°-70° C., the pH was adjusted to 4.5-5.0 with phosphoric acid, stirred for one hour, collected by filtration, and washed with water. The wet cake can be oven dried or used as is for specific applications. Here, the wet cake was dried in an oven at 60° C. to give about 50 g of quinacridone as a brilliant violet solid.