Azzindani/Open_Reaction_Data huggingface dataset:
Reaction SMILES: [CH2:1]([O:3][C:4]([C:6]1[S:10][C:9]([C:11]2[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][CH:12]=2)=[N:8][C:7]=1[CH3:21])=[O:5])[CH3:2].C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1.C1C(=O)N([Br:47])C(=O)C1.O>C(Cl)(Cl)(Cl)Cl>[CH2:1]([O:3][C:4]([C:6]1[S:10][C:9]([C:11]2[CH:16]=[CH:15][C:14]([C:17]([F:19])([F:20])[F:18])=[CH:13][CH:12]=2)=[N:8][C:7]=1[CH2:21][Br:47])=[O:5])[CH3:2]
Reactant: CCOC(=O)c1sc(-c2ccc(C(F)(F)F)cc2)nc1C
Reactant: O=C1CCC(=O)N1Br
Agent: O=C(OOC(=O)c1ccccc1)c1ccccc1
Solvent: ClC(Cl)(Cl)Cl
Solvent: O
Product: CCOC(=O)c1sc(-c2ccc(C(F)(F)F)cc2)nc1CBr
Temperature: 80 °C
Yield: 82.2 %

Procedure:
To a solution of 1 g of 4-methyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carboxylic acid ethyl ester in 8 mL of carbon tetrachloride was added portionwise 0.1 g of benzoyl peroxide and 0.56 g of NBS. The resulting mixture was heated to 80° C. for 1.5 h. 0.1 g of NBS was added and the reaction mixture was heated to 80° C. overnight. An additional 0.1 g of NBS was added and the reaction mixture was heated to 80° C. for 2 h. It was then poured into water and extracted with dichloromethane. The organic extracts were dried over magnesium sulfate, filtered, and concentrated under reduced pressure. The crude product was purified by column chromatography on silica gel (heptane 1/toluene 1 followed by pure toluene) to give 1.02 g of 4-bromomethyl-2-(4-trifluoromethyl-phenyl)-thiazole-5-carboxylic acid ethyl ester. 1 WO02067912
Reaction SMILES: C([N:8]([C@H:16]([C@@H:24]([OH:42])[CH2:25][C@@H:26]([NH:34][C:35]([O:37][C:38]([CH3:41])([CH3:40])[CH3:39])=[O:36])[CH2:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)[CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)CC1C=CC=CC=1)C1C=CC=CC=1.C([O-])=O.[NH4+]>CCO.O.[Pd]>[NH2:8][C@H:16]([C@@H:24]([OH:42])[CH2:25][C@@H:26]([NH:34][C:35]([O:37][C:38]([CH3:40])([CH3:39])[CH3:41])=[O:36])[CH2:27][C:28]1[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=1)[CH2:17][C:18]1[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=1
Reactant: CC(C)(C)OC(=O)N[C@@H](Cc1ccccc1)C[C@H](O)[C@H](Cc1ccccc1)N(Cc1ccccc1)Cc1ccccc1
Agent: [Pd]
Agent: O=C[O-]
Agent: [NH4+]
Solvent: CCO
Solvent: O
Product: CC(C)(C)OC(=O)N[C@@H](Cc1ccccc1)C[C@H](O)[C@@H](N)Cc1ccccc1
Temperature: 25 °C

Procedure:
A solution of the product from Example 68C (150 gm, 250 mmol) dissolved in absolute EtOH (2 liters) was treated with 10% Pd/C (18 gm, prewetted), followed by addition of ammonium formate (78.6 gms, 1.25 moles) dissolved in H2O (200 ml). The resulting mixture was stirred at reflux for 2.5 hours. The mixture was cooled to room temperature and filtered through a pad of infusorial earth (20 g). The filter cake was washed 3 times with EtOH (70 ml each). The filtrate was concentrated in vacuo. The residue was dissolved into EtOAc (1L) and washed (1N NaOH, followed by H2O, followed by brine), dried (Na2SO4), filtered and concentrated in vacuo to a constant weight of 95 gms. (99.2% of theory). The light yellow solid (91.5 gm of the 95 gm) was slurried in hot heptane (600 ml) (steam bath) and treated with isopropanol (45 ml), and swirled to effect solution. The solution was allowed to slowly cool to room temperature over 3 hours, kept at room temperature for 2 more hours and filtered. The filter cake was washed 10 times with 9/1 hexane-isopropanol (30 ml each) to give the desired product as an off-white finely crystalline solid which was dried to constant weight of 57.5 gm.
Reaction SMILES: [C:1]([NH:4][C:5]1[CH:6]=[CH:7][CH:8]=[C:9]2[C:13]=1[C:12](=[O:14])[N:11]([CH:15]([C:20]1[CH:25]=[CH:24][C:23]([O:26][CH:27]([F:29])[F:28])=[C:22]([O:30][CH2:31][CH3:32])[CH:21]=1)[CH2:16][C:17]([OH:19])=O)[CH2:10]2)(=[O:3])[CH3:2].C1N=C[N:35](C(N2C=NC=C2)=O)C=1.[NH4+].[OH-]>C1COCC1>[C:1]([NH:4][C:5]1[CH:6]=[CH:7][CH:8]=[C:9]2[C:13]=1[C:12](=[O:14])[N:11]([CH:15]([C:20]1[CH:25]=[CH:24][C:23]([O:26][CH:27]([F:29])[F:28])=[C:22]([O:30][CH2:31][CH3:32])[CH:21]=1)[CH2:16][C:17]([NH2:35])=[O:19])[CH2:10]2)(=[O:3])[CH3:2]
Reactant: CCOc1cc(C(CC(=O)O)N2Cc3cccc(NC(C)=O)c3C2=O)ccc1OC(F)F
Reactant: O=C(n1ccnc1)n1ccnc1
Agent: [NH4+]
Agent: [OH-]
Solvent: C1CCOC1
Product: CCOc1cc(C(CC(N)=O)N2Cc3cccc(NC(C)=O)c3C2=O)ccc1OC(F)F
Yield: 73.9 %

Procedure:
3-(7-Acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionamide was prepared by the procedure of example 6 from 3-[7-(acetylamino)-1-oxo-1,3-dihydro-isoindol-2-yl]-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionic acid (0.6 g, 1.3 mmol), CDI (0.3 g, 2 mmol) and NH4OH (0.20 ml, 2.6 mmol) in THF (30 ml) to give 3-(7-acetylamino-1-oxo-1,3-dihydro-isoindol-2-yl)-3-(4-difluoromethoxy-3-ethoxy-phenyl)-propionamide as white solid (0.43 g, 72%): mp 129-131° C.; 1H NMR (CDCl3): δ 1.44 (t, J=7.0 Hz, 3H, OCH2CH3), 2.25 (s, 3H, CH3CO), 2.97 (dd, J=5, 15 Hz, 1H, CH2), 3.42 (dd, J=10, 15 Hz, 1H, CH2), 4.08 (q, J=7.0 Hz, 2H, OCH2CH3), 4.20 (d, J=17.5 Hz, 1H, CH2N), 4.40 (d, J=17.5 Hz, 1H, CH2N), 5.40 (broad, 1H, NH2), 5.56 (m, 1H, CHN), 6.01 (broad, 1H), 6.56 (t, JH-F=75 Hz, 1H, CF2H), 6.95 (m, 3H, Ar), 7.15 (d, J=7.5 Hz, 1H, Ar), 7.47 (t, J=7.5 Hz, 1H, Ar), 8.47 (d, J=7.5 Hz, 1H, Ar), 10.25 (s, 1H, NHCO). 13C NMR (DMSO-d6): δ 3.2, 14.4, 16.2, 24.4, 37.7, 46.7, 51.7, 64.2, 93.9, 113.0, 116.6, 117.2, 117.5, 119.2, 121.3, 132.8, 137.0, 138.2, 139.0, 142.2, 149.8, 168.0, 168.5, 171.0; Anal. Calcd. for C22H23F2N3O5: C, 59.06; H, 5.18; N, 9.39; Found: C, 58.48; H, 5.12; N, 9.65.
Reaction SMILES: C([O:3][C:4](=[O:26])[C:5]([O:15][C:16]1[CH:21]=[CH:20][CH:19]=[C:18]([C:22]([CH3:25])([CH3:24])[CH3:23])[CH:17]=1)([CH3:14])[CH2:6][C:7]1[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=1)C.[CH3:27][C:28]1[O:32][C:31]([C:33]2[S:34][CH:35]=[CH:36][CH:37]=2)=[N:30][C:29]=1[CH2:38][CH2:39]OS(C1C=CC(C)=CC=1)(=O)=O>>[C:22]([C:18]1[CH:17]=[C:16]([CH:21]=[CH:20][CH:19]=1)[O:15][C:5]([CH3:14])([CH2:6][C:7]1[CH:8]=[CH:9][C:10]([O:13][CH2:39][CH2:38][C:29]2[N:30]=[C:31]([C:33]3[S:34][CH:35]=[CH:36][CH:37]=3)[O:32][C:28]=2[CH3:27])=[CH:11][CH:12]=1)[C:4]([OH:3])=[O:26])([CH3:25])([CH3:24])[CH3:23]
Reactant: CCOC(=O)C(C)(Cc1ccc(O)cc1)Oc1cccc(C(C)(C)C)c1
Reactant: Cc1ccc(S(=O)(=O)OCCc2nc(-c3cccs3)oc2C)cc1
Product: Cc1oc(-c2cccs2)nc1CCOc1ccc(CC(C)(Oc2cccc(C(C)(C)C)c2)C(=O)O)cc1

Procedure:
The title compound was prepared from 2-(3-tert-butyl-phenoxy)-3-(4-hydroxy-phenyl)-2-methyl-propionic acid ethyl ester and toluene-4-sulfonic acid 2-(5-methyl-2-thiophen-2-yl-oxazol-4-yl)-ethyl ester by the procedure of Example 24.
Reaction SMILES: [CH3:1][O:2][C:3]1[C:8]([N+:9]([O-])=O)=[CH:7][CH:6]=[CH:5][N:4]=1>CO.[Pd]>[CH3:1][O:2][C:3]1[C:8]([NH2:9])=[CH:7][CH:6]=[CH:5][N:4]=1
Reactant: COc1ncccc1[N+](=O)[O-]
Agent: [Pd]
Solvent: CO
Product: COc1ncccc1N
Yield: 96.6 %

Procedure:
A solution of 2-methoxy-3-nitropyridine (50 g, 324.4 mmol) and 10% Pd/C (5 g) in MeOH (500 mL) was stirred under an atmosphere of H2 for 3 h. The mixture was filtered through celite and the filter was washed with MeOH. The filtrate was concentrated in vacuo to yield 2-methoxypyridin-3-amine as a brown solid (38.9 g, 313.4 mmol).
Reaction SMILES: [OH:1][CH2:2][C:3]1[N:4]([C:9]2[CH:14]=[CH:13][C:12]([F:15])=[C:11]([F:16])[C:10]=2F)[C:5](=[S:8])[S:6][CH:7]=1.[H-].[Na+].C(=O)([O-])[O-].[K+].[K+].C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.C(#N)C.CN(C)C=O>[F:16][C:11]1[C:10]2[O:1][CH2:2][C:3]3=[CH:7][S:6][C:5](=[S:8])[N:4]3[C:9]=2[CH:14]=[CH:13][C:12]=1[F:15]
Reactant: OCc1csc(=S)n1-c1ccc(F)c(F)c1F
Agent: O=C([O-])[O-]
Agent: [H-]
Agent: [K+]
Solvent: CN(C)C=O
Solvent: CC#N
Solvent: C1COCCO1
Product: Fc1ccc2c(c1F)OCc1csc(=S)n1-2

Procedure:
That is, first the compound (VI) is obtained from the compound (V) in the same manner as in the process (a). The compound (VI) is then reacted with 1-acetoxy-3-halogenoacetone in an organic solvent such as chloroform, methylene chloride or a lower alcohol to give 3-acetoxy-2-oxopropyl N-(2,3,4-trifluorophenyl)dithiocarbamate (XVI). The compound (XVI) is then heated with an inorganic acid such as hydrochloric acid or sulfuric acid in a lower alcohol such as ethanol to give 4-hydroxymethyl-3-(2,3,4-trifluorophenyl)-2(3H)-1,3-thiazolethione (XVII). The compound (XVII) is then reacted with an inorganic base such as sodium hydride, potassium carbonate or sodium carbonate in an aprotic organic solvent such as N,N-dimethylformamide, acetonitrile or dioxane to give 6,7-difluoro-1H,4H-thiazolo[4,3-c][1,4]benzoxazine-1-thione (XVIII). The compound (XVIII) is then reacted with a lower alkyl halide such as methyl iodide or ethyl iodide in a polar organic solvent such as N,N-dimethylformamide, acetonitrile or ethanol to give 6,7-difluoro-1-alkylthio-4H-[1,4]benzoxazino[4,3-c]thiazolium halide (XIX). The compound (XIX) is then reacted with di(lower alkyl) malonate sodium salt, which is prepared from di(lower alkyl) malonate and sodium hydride, in an organic solvent such as tetrahydrofuran or dioxane to give di(lower alkyl)(6,7-difluoro-1H,4H-thiazolo[4,3-c][1,4]benzoxazin-1-ylidene)malonate (XI), which is treated in the same manner as in the process (a) to give the compound (II).
Reaction SMILES: [F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([C:16]2[CH:21]=[CH:20][C:19]([F:22])=[CH:18][CH:17]=2)([CH:10]2[CH2:15][CH2:14][NH:13][CH2:12][CH2:11]2)[OH:9])=[CH:4][CH:3]=1.Cl[CH2:24][CH2:25][C:26]([NH:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[O:27].C(=O)([O-])[O-].[Na+].[Na+].[I-].[K+]>CN(C)C=O.O>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([C:16]2[CH:17]=[CH:18][C:19]([F:22])=[CH:20][CH:21]=2)([OH:9])[CH:10]2[CH2:11][CH2:12][N:13]([CH2:24][CH2:25][C:26]([NH:28][C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=3)=[O:27])[CH2:14][CH2:15]2)=[CH:4][CH:3]=1
Reactant: O=C(CCCl)Nc1ccccc1
Reactant: OC(c1ccc(F)cc1)(c1ccc(F)cc1)C1CCNCC1
Agent: O=C([O-])[O-]
Agent: [I-]
Agent: [K+]
Solvent: CN(C)C=O
Solvent: O
Product: O=C(CCN1CCC(C(O)(c2ccc(F)cc2)c2ccc(F)cc2)CC1)Nc1ccccc1
Yield: 60.2 %

Procedure:
A mixture of 2.0 g (0.007 mole) of α,α-bis(4-fluorophenyl)-4-piperidinemethanol, 2.6 g (0.014 mole) of 3-chloro-N-phenylpropanamide, 8.5 g (0.080 mole) of anhydrous sodium carbonate and 0.3 g (0.002 mole) of potassium iodide in 50 ml of N,N-dimethylformamide was heated on a steam bath for 16 hours. The mixture was poured into 500 ml of water and extracted twice with 250 ml portions of ethyl acetate. The combined extracts were washed with water and brine, dried (MgSO4) and concentrated under reduced pressure to give an off-white solid. The solid was recrystallized from methanol/2-propanol to yield 1.9 g (59%) of white solid, mp 190°-192° C.
Reaction SMILES: [H-].[Na+].[I:3][C:4]1[CH:5]=[C:6]([OH:10])[CH:7]=[CH:8][CH:9]=1.[CH2:11]([N:13]([CH2:17][CH3:18])[C:14](Cl)=[O:15])[CH3:12]>C1COCC1>[CH2:11]([N:13]([CH2:17][CH3:18])[C:14](=[O:15])[O:10][C:6]1[CH:7]=[CH:8][CH:9]=[C:4]([I:3])[CH:5]=1)[CH3:12]
Reactant: Oc1cccc(I)c1
Reactant: CCN(CC)C(=O)Cl
Agent: [H-]
Agent: [Na+]
Solvent: C1CCOC1
Product: CCN(CC)C(=O)Oc1cccc(I)c1
Reaction time: 2 h

Procedure:
To a stirred suspension of NaH (1.09 g, 45.47 mmol), in THF (23 mL), a solution of 3-iodophenol (5.00 g, 22.73 mmol), in THF (5.70 mL) was drop wise added at room temperature. After stirring the reaction mixture for 2 h. N,N-diethylcarbamoyl chloride (6.17 g, 45.47 mmol) in THF (8 mL) was added. Stirring was continued for another 8 h. Usual aqueous work up gave the crude carbamate which was purified by column chromatography (eluent: hexane/EtOAc) on silica gel to afford compound b.
Reaction SMILES: [OH-].[Na+].[CH3:3][CH:4]([O:6][C:7]1[N:12]=[CH:11][C:10]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:19]=[C:20]4[C:24](=[CH:25][CH:26]=3)[NH:23][C:22]([CH2:27][CH2:28][C:29]([O:31]CC)=[O:30])=[CH:21]4)[N:14]=2)=[CH:9][C:8]=1[C:34]([F:37])([F:36])[F:35])[CH3:5].Cl>C1COCC1.C(O)(C)C.O>[CH3:5][CH:4]([O:6][C:7]1[N:12]=[CH:11][C:10]([C:13]2[O:17][N:16]=[C:15]([C:18]3[CH:19]=[C:20]4[C:24](=[CH:25][CH:26]=3)[NH:23][C:22]([CH2:27][CH2:28][C:29]([OH:31])=[O:30])=[CH:21]4)[N:14]=2)=[CH:9][C:8]=1[C:34]([F:36])([F:37])[F:35])[CH3:3]
Reactant: CCOC(=O)CCc1cc2cc(-c3noc(-c4cnc(OC(C)C)c(C(F)(F)F)c4)n3)ccc2[nH]1
Agent: Cl
Agent: [Na+]
Agent: [OH-]
Solvent: O
Solvent: CC(C)O
Solvent: C1CCOC1
Product: CC(C)Oc1ncc(-c2nc(-c3ccc4[nH]c(CCC(=O)O)cc4c3)no2)cc1C(F)(F)F
Temperature: 25 °C
Yield: 47.7 %

Procedure:
Sodium hydroxide (36 mg) was added to a solution of ethyl 3-(5-{5-[6-[(1-methylethyl)oxy]-5-(trifluoromethyl)-3-pyridinyl]-1,2,4-oxadiazol-3-yl}-1H-indol-2-yl)propanoate (D117) (89 mg) in THF (1 mL), isopropanol (1 mL) and water (0.5 mL). The mixture was stirred at room temperature until LCMS showed no starting material. The mixture was neutralized with 2 M HCl till pH ˜6.0. The crude product was purified by Mass Directed Auto Prep to afford of 3-(5-{5-[6-[(1-methylethyl)oxy]-5-(trifluoromethyl)-3-pyridinyl]-1,2,4-oxadiazol-3-yl}-1H-indol-2-yl)propanoic acid (E92) (40 mg). δH (DMSO-d6, 400 MHz): 1.39 (6H, d), 2.70 (2H, t), 2.99 (2H, t), 5.55 (1H, m), 6.35 (1H, s), 7.46 (1H, d), 7.77 (1H, dd), 8.23 (1H, s), 8.64 (1H, d), 9.22 (1H, d), 11.36 (1H, s), 12.25 (1H, s); MS (ES): C22H19F3N4O4 requires 460; found 461.2 (M+H+).
Reaction SMILES: [CH3:1][S:2]([C:5]1[CH:10]=[CH:9][C:8]([N:11]2[CH:16]=[CH:15][C:14]([O:17][CH:18]3[CH2:23][CH2:22][N:21]([C:24](OC(C)(C)C)=O)CC3)=[CH:13][C:12]2=[O:31])=[CH:7][CH:6]=1)(=[O:4])=[O:3].Cl[C:33]([O:35][C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=1[Cl:42])=[O:34].ClC(OC(C)C(F)(F)F)=O>>[CH3:1][S:2]([C:5]1[CH:6]=[CH:7][C:8]([N:11]2[CH:16]=[CH:15][C:14]([O:17][CH2:18][CH:23]3[CH2:24][N:21]([C:33]([O:35][C:36]4[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=4[Cl:42])=[O:34])[CH2:22]3)=[CH:13][C:12]2=[O:31])=[CH:9][CH:10]=1)(=[O:3])=[O:4]
Reactant: CC(C)(C)OC(=O)N1CCC(Oc2ccn(-c3ccc(S(C)(=O)=O)cc3)c(=O)c2)CC1
Reactant: O=C(Cl)Oc1ccccc1Cl
Agent: CC(OC(=O)Cl)C(F)(F)F
Product: CS(=O)(=O)c1ccc(-n2ccc(OCC3CN(C(=O)Oc4ccccc4Cl)C3)cc2=O)cc1

Procedure:
Example 22 was prepared according to procedures described in Example 2, Step A and Step C, substituting tert-butyl 3-((1-(4-(methylsulfonyl)phenyl)-2-oxo-1,2-dihydropyridin-4-yloxy)methyl)azetidine-1-carboxylate for tert-butyl 4-(1-(4-(methylsulfonyl)phenyl)-2-oxo-1,2-dihydropyridin-4-yloxy)piperidine-1-carboxylate in Step A and 2-chlorophenyl chloroformate for 1,1,1-trifluoropropan-2-yl chloroformate in Step C. 1H NMR (500 MHz, CDCl3) δ 8.09 (d, J=8.25 Hz, 2 H), 7.62 (d, J=8.25 Hz, 2 H), 7.43 (dd, J=7.97, 1.37 Hz, 1H), 7.32 (d, J=7.70 Hz, 1 H), 7.16-7.31 (m, 3H), 6.28 (d, J=2.20 Hz, 1 H), 6.25 (dd, J=7.70, 2.75 Hz, 1 H), 4.41 (app brs, 1 H), 4.31 (app brs, 1 H), 4.23 (d, J=6.05 Hz, 2 H), 4.20 (app brs, 1 H), 4.04 (app brs, 1 H) 3.15-3.26 (m, 1 H), 3.11 (s, 3 H). MS (ESI) 489 (M+H).
Reaction SMILES: C[O:2][C:3]([C:5]1[CH:14]=[CH:13][C:12]2[C:11]([CH3:16])([CH3:15])[CH2:10][CH2:9][C:8](=[O:17])[C:7]=2[CH:6]=1)=[O:4].[OH-].[Na+].Cl>C(O)C.C1COCC1>[CH3:15][C:11]1([CH3:16])[CH2:10][CH2:9][C:8](=[O:17])[C:7]2[CH:6]=[C:5]([C:3]([OH:4])=[O:2])[CH:14]=[CH:13][C:12]1=2
Reactant: COC(=O)c1ccc2c(c1)C(=O)CCC2(C)C
Agent: Cl
Agent: [Na+]
Agent: [OH-]
Solvent: CCO
Solvent: C1CCOC1
Product: CC1(C)CCC(=O)c2cc(C(=O)O)ccc21
Reaction time: 16 h

Procedure:
To a solution of methyl-5,5-dimethyl-5,6dihydro-naphthalen-8(7H)-one-2-carboxylate (Compound E2, 1.05 g, 4.5 mmol) in 10 mL of ethanol and THF (10 mL) was added sodiumhydroxide 9 mL (1M solution). The solution was stirred for 16 h and thereafter acidified with 10% HCl. The mixture was extracted with ethyl acetate, the combined organic layer was washed with water and brine, and dried over MgSO4. The solvent was distilled off under reduced pressure to afford the title compound as a white solid.
Reaction SMILES: [NH:1]1[C:8]2[N:4]([N:5]=[CH:6][CH:7]=2)[CH2:3][CH2:2]1.Br[CH2:10][C:11]([O:13][CH2:14][CH3:15])=[O:12].C(=O)(O)[O-].[K+].C(OCC)(=O)C>CS(C)=O.O>[CH2:14]([O:13][C:11]([CH2:10][N:1]1[C:8]2[N:4]([N:5]=[CH:6][CH:7]=2)[CH2:3][CH2:2]1)=[O:12])[CH3:15]
Reactant: CCOC(=O)CBr
Reactant: c1cc2n(n1)CCN2
Agent: O=C([O-])O
Agent: [K+]
Solvent: CS(C)=O
Solvent: O
Solvent: CCOC(C)=O
Product: CCOC(=O)CN1CCn2nccc21
Temperature: 25 °C
Reaction time: 4 h

Procedure:
To a solution of 2,3-dihydro-1H-imidazo[1,2-b]-pyrazole (19 g) in dimethylsulfoxide (95 ml) were added ethyl bromoacetate (20.4 ml) and potassium bicarbonate (30 g) under ice-cooling. The mixture was stirred at room temperature for 4 hours. The reaction mixture was poured into a mixture of ethyl acetate (1.5 l) and water (500 ml). The separated organic layer was washed with water and brine, and dried over magnesium sulfate. The solvent was evaporated and the residue was subjected to column chromatography on silica gel using ethyl acetate as an eluent. Fractions containing the object compound were combined and evaporated in vacuo to give 1-ethoxycarbonylmethyl-2,3-dihydro-1H-imidazo[1,2-b]pyrazole (20.3 g).
Reaction SMILES: [C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][C:11]([OH:13])=[O:12])=[O:7])([CH3:4])([CH3:3])[CH3:2].Br[CH2:15][C:16]([C:18]1[CH:23]=[CH:22][CH:21]=[C:20]([O:24][CH3:25])[CH:19]=1)=[O:17]>>[C:1]([O:5][C:6]([NH:8][CH2:9][CH2:10][C:11]([O:13][CH2:15][C:16]([C:18]1[CH:23]=[CH:22][CH:21]=[C:20]([O:24][CH3:25])[CH:19]=1)=[O:17])=[O:12])=[O:7])([CH3:4])([CH3:2])[CH3:3]
Reactant: COc1cccc(C(=O)CBr)c1
Reactant: CC(C)(C)OC(=O)NCCC(=O)O
Product: COc1cccc(C(=O)COC(=O)CCNC(=O)OC(C)(C)C)c1

Procedure:
The product was obtained starting from 3-(tert-butoxycarbonylamino)propanoic acid (400 mg, 2.11 mmol) and 2-bromo-1-(3-methoxyphenyl)ethanone (484 mg, 2.11 mmol) according to the method described in example 7, step 1 as yellow oil (759 mg, 2.11 mmol, 100%). MS: M=238.2 (M-Boc+H)+
Reaction SMILES: [CH2:1]([O:3][C:4]([C:6]1[C:7]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[N+:20]([O-:22])=[O:21])=[N:8][CH:9]([CH3:13])[NH:10][C:11]=1[CH3:12])=[O:5])[CH3:2].C(N(CC)CC)C.[C:30](Cl)(=[O:33])[CH2:31][CH3:32]>C(Cl)(Cl)Cl>[CH2:1]([O:3][C:4]([C:6]1[CH:7]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[N+:20]([O-:22])=[O:21])[N:8]([C:30](=[O:33])[CH2:31][CH3:32])[C:9]([CH3:13])=[N:10][C:11]=1[CH3:12])=[O:5])[CH3:2]
Reactant: CCC(=O)Cl
Reactant: CCOC(=O)C1=C(C)NC(C)N=C1c1ccccc1[N+](=O)[O-]
Solvent: ClC(Cl)Cl
Solvent: CCN(CC)CC
Product: CCOC(=O)C1=C(C)N=C(C)N(C(=O)CC)C1c1ccccc1[N+](=O)[O-]
Yield: 58.2 %

Procedure:
1.00 g (3.30 millimole) of 5-Ethoxycarbonyl-2.6-dimethyl-4-(2-nitrophenyl)-dihydropyrimidine was dissolved in 15 ml of chloroform. To the solution, 2 ml of triethylamine (14.3 millimole) was added with stirring and then 0.4 g (4.32 millimole) of propionyl chloride was added dropwise. The mixture was stirred at room temperature for 40 minutes and concentrated under reduced pressure. The residue was purified on silica gel by column chromatography and recrystallized from benzene/hexane to obtain 0.69 g (58% yield) of title compound.
Reaction SMILES: Br[C:2]1[N:3]=[C:4]2[C:10]([C:11]([NH:13][CH:14]([CH3:16])[CH3:15])=[O:12])=[CH:9][N:8]([CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])[C:5]2=[N:6][CH:7]=1.[CH3:25][C:26]1[CH:27]=[CH:28][C:29]([NH2:32])=[N:30][CH:31]=1.CC(C)([O-])C.[Na+].CN(C=O)C>O.C(OCC)(=O)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1.C1(C)C=CC=CC=1>[CH:14]([NH:13][C:11]([C:10]1[C:4]2[C:5](=[N:6][CH:7]=[C:2]([NH:32][C:29]3[CH:28]=[CH:27][C:26]([CH3:25])=[CH:31][N:30]=3)[N:3]=2)[N:8]([CH2:17][O:18][CH2:19][CH2:20][Si:21]([CH3:24])([CH3:23])[CH3:22])[CH:9]=1)=[O:12])([CH3:16])[CH3:15]
Reactant: Cc1ccc(N)nc1
Reactant: CC(C)NC(=O)c1cn(COCC[Si](C)(C)C)c2ncc(Br)nc12
Agent: [Pd+2]
Agent: CC(=O)[O-]
Agent: CC(C)(C)[O-]
Solvent: CCOC(C)=O
Solvent: CN(C)C=O
Solvent: Cc1ccccc1
Product: Cc1ccc(Nc2cnc3c(n2)c(C(=O)NC(C)C)cn3COCC[Si](C)(C)C)nc1
Temperature: 140 °C
Yield: 56.2 %

Procedure:
A mixture of 2-bromo-N-isopropyl-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide (150 mg, 363 μmol), 5-methylpyridin-2-amine (58.9 mg, 544 μmol), BINAP (11.3 mg, 18.1 μmol), palladium (II) acetate (20.4 mg, 90.7 μmol) and sodium tert-butoxide (87.2 mg, 907 μmol) was added DMF (780 μL) and toluene (390 μL) was heated in a microwave at 140° C. for 20 min. The mixture was cooled then diluted with water and ethyl acetate. The mixture was extracted with ethyl acetate (3×) then the organic extracts were combined and washed with brine, dried over magnesium sulfate and purified by chromatography (silica, 30-70% ethyl acetate in hexanes) to give N-isopropyl-2-(5-methylpyridin-2-ylamino)-5-((2-(trimethylsilyl)ethoxy)methyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide (90 mg, 204 μmol, 56%) as an off-white solid. MS (EI/CI) m/z: 441.3 [M+H].
Reaction SMILES: [C:1]([C:4]1[C:5]([CH2:10]O)=[N:6][CH:7]=[CH:8][CH:9]=1)(=[O:3])[CH3:2].CN(C)C=O.S(Cl)([Cl:19])=O.C(=O)([O-])[O-].[Na+].[Na+]>ClCCl.C(Cl)(Cl)Cl>[C:1]([C:4]1[C:5]([CH2:10][Cl:19])=[N:6][CH:7]=[CH:8][CH:9]=1)(=[O:3])[CH3:2]
Reactant: CC(=O)c1cccnc1CO
Reactant: O=S(Cl)Cl
Agent: O=C([O-])[O-]
Agent: [Na+]
Solvent: CN(C)C=O
Solvent: ClCCl
Solvent: ClC(Cl)Cl
Product: CC(=O)c1cccnc1CCl
Reaction time: 1 h

Procedure:
A mixture of 3-acetyl-2-hydroxymethylpyridine(0.2 g) in dichloromethane(10 ml) was treated with catalytic amount of N,N-dimethylformamide. To the mixture was added dropwise a solution of thionyl chloride (1 ml) in dichloromethane (2 ml) at ca. 5° C. in an ice-water bath. The mixture was stirred for 1 hour under the same condition, and then at room temperature for 40 minutes. To the mixture was added carefully dropwise saturated sodium carbonate aqueous solution under stirring in an ice-water bath. The mixture was taken up with chloroform and washed with water. The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to give 3-acetyl-2-chloromethylpyridine (0.11 g) as a black oil.
Reaction SMILES: [CH3:1][N:2]([CH3:29])[C:3](=[O:28])[NH:4][C:5]1[C:13]([CH2:14]/[CH:15]=[C:16](\[CH3:23])/[CH2:17][CH2:18][C:19]([O:21]C)=[O:20])=[C:12]([O:24][CH3:25])[C:11]([CH3:26])=[C:10]2[C:6]=1[C:7](=[O:27])[O:8][CH2:9]2.CO.O.[OH-].[Li+]>O>[CH3:29][N:2]([CH3:1])[C:3](=[O:28])[NH:4][C:5]1[C:13]([CH2:14]/[CH:15]=[C:16](\[CH3:23])/[CH2:17][CH2:18][C:19]([OH:21])=[O:20])=[C:12]([O:24][CH3:25])[C:11]([CH3:26])=[C:10]2[C:6]=1[C:7](=[O:27])[O:8][CH2:9]2
Reactant: COC(=O)CC/C(C)=C/Cc1c(NC(=O)N(C)C)c2c(c(C)c1OC)COC2=O
Agent: [Li+]
Agent: [OH-]
Solvent: O
Solvent: CO
Product: COc1c(C)c2c(c(NC(=O)N(C)C)c1C/C=C(\C)CCC(=O)O)C(=O)OC2
Yield: 94.6 %

Procedure:
To a solution of 0.3 g (0.74 mmol) of methyl (E)-6-[1,3-dihydro-4-(3,3-dimethylureido)-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl]-4-methyl-4-hexenoate in 7.4 ml 4:1 methanol:water was added 0.13 g (2.96 mmol) of lithium hydroxide monohydrate. The solution was heated at 50°-60° C. for 4 hours. Upon cooling, the reaction was partitioned between aqueous sodium hydrogen sulfate and ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, and concentrated to (E)-6-[1,3-dihydro-4-(3,3-dimethylureido)-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl]-4-methyl-4-hexenoic acid. Recrystallization from hexane-ethyl acetate gave 0.27 g (0.7 mmol) of (E)-6-[1,3-dihydro-4-(3,3-dimethylureido)-6-methoxy-7-methyl-3-oxoisobenzofuran-5-yl]-4-methyl-4-hexenoic acid, mp 170°-190° C.