Structure of 39987-25-2
                                
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    							Batch number can be found on the product's label following the word 'Batch'.
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    							Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
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| CAS No. : | 39987-25-2 | 
| Formula : | C6H12ClNO4 | 
| M.W : | 197.62 | 
| SMILES Code : | O=C(OC)CNCC(OC)=O.[H]Cl | 
| MDL No. : | MFCD00216724 | 
| InChI Key : | IIWYYIACSUPJCN-UHFFFAOYSA-N | 
| Pubchem ID : | 2727727 | 
| GHS Pictogram: | 
                                
                                
                                     
                                
                                
                             | 
| Signal Word: | Warning | 
| Hazard Statements: | H315-H319-H335 | 
| Precautionary Statements: | P261-P305+P351+P338 | 
| Num. heavy atoms | 12 | 
| Num. arom. heavy atoms | 0 | 
| Fraction Csp3 | 0.67 | 
| Num. rotatable bonds | 6 | 
| Num. H-bond acceptors | 5.0 | 
| Num. H-bond donors | 1.0 | 
| Molar Refractivity | 43.29 | 
| TPSA ? Topological Polar Surface Area: Calculated from   | 
                                            64.63 Ų | 
| Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from   | 
                                            0.0 | 
| Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by   | 
                                            0.44 | 
| Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from   | 
                                            -0.28 | 
| Log Po/w (MLOGP)? MLOGP: Topological method implemented from   | 
                                            -0.23 | 
| Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by   | 
                                            -0.3 | 
| Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions  | 
                                            -0.07 | 
| Log S (ESOL):? ESOL: Topological method implemented from   | 
                                            -0.95 | 
| Solubility | 22.4 mg/ml ; 0.113 mol/l | 
| Class? Solubility class: Log S scale   | 
                                            Very soluble | 
| Log S (Ali)? Ali: Topological method implemented from   | 
                                            -1.37 | 
| Solubility | 8.53 mg/ml ; 0.0432 mol/l | 
| Class? Solubility class: Log S scale   | 
                                            Very soluble | 
| Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by   | 
                                            -0.88 | 
| Solubility | 25.8 mg/ml ; 0.131 mol/l | 
| Class? Solubility class: Log S scale   | 
                                            Soluble | 
| GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg  | 
                                            High | 
| BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg  | 
                                            No | 
| P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set)   | 
                                            No | 
| CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)  | 
                                            No | 
| CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)  | 
                                            No | 
| CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)  | 
                                            No | 
| CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)  | 
                                            No | 
| CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)  | 
                                            No | 
| Log Kp (skin permeation)? Skin permeation: QSPR model implemented from   | 
                                            -7.19 cm/s | 
| Lipinski? Lipinski (Pfizer) filter: implemented from   | 
                                            0.0 | 
| Ghose? Ghose filter: implemented from   | 
                                            None | 
| Veber? Veber (GSK) filter: implemented from   | 
                                            0.0 | 
| Egan? Egan (Pharmacia) filter: implemented from   | 
                                            0.0 | 
| Muegge? Muegge (Bayer) filter: implemented from   | 
                                            1.0 | 
| Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat   | 
                                            0.55 | 
| PAINS? Pan Assay Interference Structures: implemented from   | 
                                            0.0 alert | 
| Brenk? Structural Alert: implemented from   | 
                                            1.0 alert: heavy_metal | 
| Leadlikeness? Leadlikeness: implemented from   | 
                                            No; 1 violation:MW<1.0 | 
| Synthetic accessibility? Synthetic accessibility score:  from 1 (very easy) to 10 (very difficult)  | 
                                            1.54 | 
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 82% | With triethylamine; at 0 - 20℃; for 4.5h; | Acetic anhydride (9.1 ml, 96.7 mmol) was added dropwise at 0Cinto a solution <strong>[39987-25-2]dimethyl 2,2'-azanediyldiacetate hydrochloride</strong>4(14.70 g, 74.39 mmol) in triethylamine (50 ml). The reaction mixture was stirred for 0.5 h and then transferred to room temperature and stirred for 4 h. Triethylamine was removed under vacuum. The residue was extracted with dichloromethane and the organic phase was washed with saturated sodium chloride, dried over anhydrous sodium sulfate and concentrated. The crude product was purified by recrystallization from dichloromethane / n-hexane to give the compound5(12.39 g, 82%yield) as a white solid.1H NMR (500 MHz, CDCl3) delta 4.20 (s, 2H), 4.15 (s, 2H), 3.78 (s, 3H), 3.72 (s,3H), 2.12 (s, 3H). HRMS (ESI) (m/z):calcdfor C8H13NO5[M+H]+ 204.0872, found. 204.0864. [M+Na]+ 226.0691, found.226.0681. | 
| 82% | With triethylamine; at 0 - 20℃; for 4.5h; | Compound 2 (14.70 g, 74.39 mmol) was dissolved in 50 ml of triethylamine. The reaction solution was placed in an ice bath at 0 C, and acetic anhydride (9.1 ml, 96.7 mmol) was added. After 0.5 h of reaction, it was transferred to room temperature and stirred at room temperature for 4 h. Remove the solvent by spin. The reaction solution was extracted with dichloromethane / water. The dichloromethane phase was washed with a saturated sodium chloride solution, dried over anhydrous sodium sulfate, and concentrated by rotary evaporation. The crude product was recrystallized from dichloromethane / n-hexane to give Compound 3 (12.39 g, 82%) as a white solid. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 99% | With thionyl chloride; at -10 - 20℃; | Thionyl chloride (16 ml, 225.39 mmol, 1.64 g/ml) the addition was completed, iminodiacetic acid3(10 g, 75.13 mmol) was added and the reaction was transferred to room temperature,stiringovernight. Methanol was removed under vacuum to give the compound4(14.70 g, 99 %) as a white solid.1H NMR (400 MHz, DMSO) delta10.05 (s, 2H), 4.01 (s, 4H), 3.74 (s, 6H). HRMS (ESI) (m/z):calcdfor C6H11NO4[M+H]+ 162.0755, found. 162.0766. | 
| 99% | With thionyl chloride; at -10 - 20℃; | At -10 , pressure-equalizing dropping funnel was added thionyl chloride (16ml, 225.39mmol, 1.64g / ml)To 100 ml of methanol, add imine diacetate (10 g, 75.13 mmol),The reaction solution was transferred to room temperature and stirred overnight. The reaction solution was swirled to remove methanol to obtain Compound 3 (14.70 g, 99%) as a white solid. | 
| 81% | Methanol (500 mL) was cooled to -20 C, and SOCl2 (36 mL, 0.5 mol) was added dropwise under vigorous stirring while maintaining the temperature of the reaction mixture below -10 C. Iminodiacetic acid(13.3 g, 0.1 mol) was then added in one portion. The reaction mixture was stirred for 24 h at r.t. and then left to stand at r.t. for two days.The volatiles were evaporated, and the residue were crystallized from methanol. Yield: 16 g (81%); white crystalline solid.1H NMR (300 MHz, D2O): delta = 4.13 (s, 4 H), 3.85 (s, 6 H).13C NMR (75 MHz, D2O): delta = 168.08, 54.12, 47.66. Anal. Calcd for C6H12ClNO4: C, 36.47; H, 6.12; N, 7.09. Found: C, 36.52;H, 6.01; N, 6.98. | 
                                                    
                                                    [ 39987-25-2 ]
                                                    
                                                    [ 39987-25-2 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With N-ethyl-N,N-diisopropylamine; In DMF (N,N-dimethyl-formamide); at 20℃; for 24h; | An other tridentate ligand, yielding negatively charged complexes, was attached to the same resin as in example 1. Dimethylimino diacetate hydrochloride (6.4 mg, 33 [FMOL)] and diisopropylethylamine (11.2 [PL,] 66 [PMOL)] were dissolved in DMF (0.5 ml) and resin 1 (280 mg, 67 [FMOL)] was added. The mixture was gently stirred at room temperature for 24 hours, the reaction mixture was filtered, and the resin was washed with DMF (3 times), DMF and methanol (3 times alternating), methanol and water (3 times alternating). The protected intermediate was positive on bromophenol blue and negative on TNBS staining. The protecting groups were removed rinsing the resin with aqueous NaOH (0. [1M] for 3 hours, then 0.01M for 12 hours). Filtration of the resin, washing with [NAOH] [0.] 1M (2 times), water (5 times), water and methanol (3 times alternating), methanol (3 times), and diethyl ether (3 times) and drying at high vacuum gave product 5 in an yield of 35 mg (100%; capacity 4 mmol/g, coupling efficiency 18%). Resin 5 was negative on all of the staining reactions. | 
                                                    
                                                    [ 76350-03-3 ]
                                                    
                                                    [ 39987-25-2 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With triethylamine; In dichloromethane; N,N-dimethyl-formamide; | a 5-Methoxyacetylamino-2,4,6-triiodisophthalic acid-N,N-bis-(methoxycarbonylmethyl)-amide-chloride A solution of 66.8 g (100 mmol) of 5-methoxyacetylamino-2,4,6-triiodisophthalic acid dichloride (EP 0015867) in 300 ml of anhydrous N,N-dimethylformamide is mixed with 21.75 g (110 mmol) of iminodiacetic acid dimethyl ester-hydrochloride (synthesis according to Dubsky, Graenacher, Chem. Ber. 50, 1693 (1917)) and 30.5 ml (220 mmol) of triethylamine. A suspension results, which is stirred for 14 hours at room temperature under argon. The batch is taken up in dichloromethane, shaken out once with water, twice with 2n aqueous citric acid and once with aqueous sodium bicarbonate solution. The organic phase is dried on anhydrous magnesium sulfate and concentrated by evaporation in a vacuum. By instillation of tert-butyl ether in the concentrated solution, the title compound can be precipitated as crystalline solid, which is suctioned off and dried in a vacuum. Yield: 57.4 g (72.4% of theory); Analysis (relative to the solventless substance): Cld: C 25.76 H 2.04 Cl 4.47 I 48.04 N 3.54 O 16.15; Fnd: C 25.82 H 2.11 Cl 4.48 I 48.01 N 3.38 | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With triethylamine; HATU; In N,N-dimethyl-formamide; at 20℃; for 3h; | To a stirred solution of 13-cyclohexyl-N-[(dimethylamino)sulfonyl]-3-methoxy-7H-indolo[2,1-a][2]benzazepine-10-carboxamide-6-carboxylic acid (150 mg, 0.28 mmol), <strong>[39987-25-2]dimethyl 2,2'-azanediyldiacetate hydrochloride</strong> (83 mg, 0.42 mmol) and triethylamine (0.16 mL) in DMF (2 mL) was added HATU (140 mg, 0.36 mmol). The reaction mixture was stirred at rt for 3 h, diluted with H2O (5 mL), acidified with 1M HCl (aq.) (0.20 mL) and the precipitate was collected by filtration and flushed with H2O. To a solution of the bright yellow solids in THF/MeOH (1:1, 3 mL) was added 1M NaOH (aq.) (1 mL, 1.0 mmol). The reaction solution was heated in a sealed tube with microwave irradiation at 65 C. for 20 min. The reaction was cooled, neutralized with 1M HCl (aq.) (1 mL, 1.0 mmol) and concentrated to remove organic solvents. The residue was slurried with H2O and the solids were collected by filtration dissolved into MeOH and purified by preparative HPLC (CH3CH/H2O with an NH4OAc buffer) to yield glycine, N-(carboxymethyl)-N-[[13-cyclohexyl-10-[[[(dimethylamino)sulfonyl]amino]carbonyl]-3-methoxy-7H-indolo[2,1-a][2]benzazepin-6-yl]carbonyl]- (88 mg, 0.13 mmol, 48%) as a yellow powder. Partial 1HNMR (300 MHz, DMSO-d6) delta 8.04 (s, 1H), 7.71-7.65 (m, 2H), 7.46 (d, J=8.4 Hz, 1H), 7.14 (dd, J=2.6, 8.4 Hz, 1H), 6.98 (d, J=2.6 Hz, 1H), 6.89 (s, 1H), 3.86 (s, 3H), 2.67 (s, 6H). LCMS: m/e 651 (M-H)-, ret time 1.67 min, column A, 4 minute gradient. | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With 4-methyl-morpholine; benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; In N,N-dimethyl-formamide; at 45℃; | Iminodiacetic dimethyl ester hydrochloride (624 mg, 3.24 mmol) was suspended in 5 mL of anhydrous DMF under nitrogen, and N-methylmorpholine (360 muL, 3.27 mmol) was added. After 5 minutes, 4-iodobenzoic acid (805 mg, 3.25 mmol) was added, followed by HOBt (450 mg, 3.33 mmol) and EDC (1.0 g, 5.28 mmol). The reaction was stirred overnight at 45 0C. The solvent was removed and the residue was dissolved in EtOAc (20 mL) and washed with 0.5 M HCl, sat. NaHCO3 and water. The organic phase was collected, the solvent removed and the mixture purified by column chromatography (silica; hexanes : EtOAc 90:10 - 65:45), yielding the product as a white solid. MS(ES+): Cal'd. 392.00 (MH+), exp. 391.98 (MH+). | 


                                                    
                                                    [ 39987-25-2 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| In chloroform; N,N-dimethyl-formamide; toluene; | Preparation of [2-(2-tert-butoxycarbonylamino-acetylamino)-acetyl]-methoxycarbonylmethyl-amino}-acetic acid methyl ester (9) (Scheme II) To a stirred solution of <strong>[39987-25-2](methoxycarbonylmethyl-amino)-acetic acid methyl ester hydrochloride</strong> (8) (988 mg, 5 mmol) in DMF (15 ml) were added Boc-GlyGlyNos (3) (3293 mg, 10 mmol) and (CH3CH2)3N (3475 muL, 25 mmol) were added. The mixture was stirred overnight at room temperature and then diluted with o-xylene (70 ml) and evaporated. Flash column chromatography on silica gel (packed in toluene, and eluted with ethyl acetate) resulted in a crude product. The crude product was dissolved in chloroform and washed sequentially with water, 0.5 M NaHCO3 and saturated KCl. The chloroform extract was evaporated and the product purified on a silica gel column (packed in chloroform and eluted with 15:1 (v/v) chloroform/methanol). Evaporation of the fractions and drying under vacuum of the residue provided a colourless thick syrup of (9). Yield 1785 mg, (95%). TLC: Rf=0.49 (7:1 (v/v) chloroform/methanol). 1H NMR (500 MHz, [D6] DMSO, 30 C.) delta, ppm: 7.826 (t, J=5.1 Hz, 1H; NHCO), 6.979 (t, J=5.9 Hz, 1H; NHCOO), 4.348 and 4.095 (s, 2H; NCH2COO), 3.969 (d, J=5.1 Hz, 2H; COCH2NH), 3.689 and 3.621 (s, 3H; OCH3), 3.559 (d, J=5.9 Hz, 2H; COCH2NHCOO), 1.380 (s, 9H; C(CH3)3). | 

                                                    
                                                    [ 39987-25-2 ]
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| 62% | With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In N,N-dimethyl acetamide; at 20℃; for 3.5h; | To a solution of 6 (1 g, 1.6 mmol) in N,N-dimethylacetamide (50 mL) was added <strong>[39987-25-2]dimethyl iminodiacetate hydrochloride</strong> (1.5 g, 7.6 mmol) and 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (4.0 g, 20.9 mmol), and the reaction mixture was stirred at room temperature for 3.5 h. The reaction mixture was poured into water (250 mL) to yield the precipitate, and the resulting precipitate was collected, washed with water and dried. The crude compound was purified by column chromatography using ethyl acetate to give 7 (920 mg, 62%); ESI-MS m/z: 924 [M+H]+. 1H NMR (pyridine-d5, 600 MHz) delta: -1.94 (1H, br s) ; -1.92 (1H, br s); 1.44 (3H, t, J = 7.2 Hz); 2.46(2.7H s); 2.50 (0.2H, s); 3.40 (6H, s); 3.42 (6H, s); 3.48 (3H, s); 3.50 (3H, s); 3.56-3.63 (4H, m); 3.59 (3H, s); 4.42-4.53 (4H, m); 4.55 (2H, t, J = 7.8 Hz); 4.63 (2H s); 4.65 (2H s); 4.67 (2H s); 4.78 (2H s); 6.02 (1H, dd, J = 1.2, 12.0 Hz); 6.34 (1H, d, J = 1.2, 18.0 Hz); 8.22 (1H, dd, J = 11.4, 18.0 Hz); 8.40 (0.9H, d, J = 10.2 Hz); 8.91 (0.1H, d, J = 9.6 Hz); 9.52 (0.1H, d, J = 10.2 Hz); 9.66 (0.9H, s); 9.73 (0.1H, s); 9.86 (0.9H, s); 9.88 (0.1H, s); 9.98 (0.9H, d, J = 10.2 Hz); 10.03 (1H, s); 10.30 (1H, s). | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-cyclohexyl-cyclohexanamine; In N,N-dimethyl acetamide; at 20℃; for 7h; | To a solution of 3 (5.4 g, 8.5mmol) in THF (108 mL) was added 0.5 mol/L aq. NaOH solution (157 mL), and the reaction mixture was stirred at room temperature for 1 h. The reaction mixture was acidified by 20% aq. citric acid solution (168 mL) to yield the precipitate. The precipitate was collected, washed with water, and dried. The dicarboxylic acid was used immediately in the next step without further purification. To a solution of the dicarboxylic acid in N,N-dimethylacetamide (270 mL) was added dicyclohexylamine (3.3 g, 18.2 mmol), <strong>[39987-25-2]dimethyl iminodiacetate hydrochloride</strong> (8.8 g, 44.5 mmol) and 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (24 g, 125.2 mmol), and the reaction mixture was stirred at room temperature for 7 h. The reaction mixture was poured into water (1 L) to yield the precipitate, and the resulting precipitate was collected, washed with water,and dried. The diiminodiacetic acid ester was used immediately in the next step without further purification. To a solution of the diiminodiacetic acid ester in pyridine (36 mL) was added hydroxylamine hydrochloride (0.4 g, 5.8 mmol), and the reaction mixture was stirred at room temperature for 30 min. The reaction mixture was poured into cold 10% aq. acetic acid solution (360mL) to yield the precipitate, and the resulting precipitate was collected, washed with water, and dried. The crude compound was purified by column chromatography using acetone to give 4 (7.1 g, 93%for 3 steps) | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With N-ethyl-N,N-diisopropylamine; potassium iodide; In N,N-dimethyl-formamide; at 50℃; | Stage 2: A mixture of Intermediate XXI.1 stage 1 (440.0 mg; 1.31 mmol) and <strong>[39987-25-2](methoxycarbonylmethyl-amino)-acetic acid methyl ester hydrochloride</strong> (259.4 mg; 1.31 mmol), potassium iodide (21.8 mg; 0.13 mmol) and DIPEA (449.4 muL; 2.63 mmol) in DMF (2 mL) is stirred at 50 C. over night. The insoluble material is filtered off. The mother liquor is purified by RP HPLC (modifier: TFA). [0290] C19H33N3O7 [0291] ESI Mass spectrum: m/z=416 [M+H]+ | |
| With N-ethyl-N,N-diisopropylamine; potassium iodide; In N,N-dimethyl-formamide; at 50℃; | Stage 2: A mixture of Intermediate XXI.1 stage 1 (440.0 mg; 1.31 mmo 1) and<strong>[39987-25-2](methoxycarbonylmethyl-amino)-acetic acid methyl ester hydrochloride</strong> (259.4 mg; 1.31rmno 1), potassium iodide (21 .8 mg; 0.13 mmo 1) and DIPEA (449.4 jiL; 2.63 mmo 1) inDMF (2 mL) is stirred at 50C over night. The insoluble material is filtered off. Themother liquor is purified by RP HPLC (modifier: TFA).C19H33N307ESI Mass spectrum: mlz = 416 [M+H]+ | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With potassium carbonate; potassium iodide; In acetone; at 20℃; for 72h; | A mixture of bromo acetic acid (351.5 mg; 2.53 mmol), <strong>[39987-25-2](methoxycarbonylmethyl-amino)acetic acid methyl ester hydrochloride</strong> (500.0 mg; 2.53 mmol), potassium carbonate (1.04 g; 7.50 mmol) and potassium iodide (50.0 mg; 0.30 mmol) in acetone (10 mL) is stirred at r.t. for 3 days. The insoluble material is filtered off and discarded. The solvent is evaporated. [0297] C8H13NO6 | |
| With potassium carbonate; potassium iodide; In acetone; at 20℃; for 72h; | A mixture of bromo acetic acid (351.5 mg; 2.53 mmol), <strong>[39987-25-2](methoxycarbonylmethyl-amino)acetic acid methyl ester hydrochloride</strong> (500.0 mg; 2.53 mmol), potassium carbonate (1.04g; 7.50 mmol) and potassium iodide (50.0 mg; 0.30 mmol) in acetone (10 mL) is stirred at r.t. for 3 days. The insoluble material is filtered off and discarded. The solvent is evaporated.C8H13N06 | 
| Yield | Reaction Conditions | Operation in experiment | 
|---|---|---|
| With triethylamine; In dichloromethane;Inert atmosphere; | Thionyl chloride (74 mL) was added drop wise to a suspensionof 2-phenylacetic acid 1, (13.6 g, 100 mmol), during a period oftime 30 min at 20 C. The reaction mixture was stirred at20 C for 1 h and then overnight at rt. The solvent and the excessof SOCl2 were removed under vacuum and then diethyl ether wasadded and removed in vacuum, this process was repeated threetimes. The crude acid chloride was added to a mechanically stirredcold (ice bath) solution of <strong>[39987-25-2]dimethyl iminodiacetate hydrochloride</strong> 2(19.7 g, 100 mmol) in dry CH2Cl2 (20 mL) in presence of Et3N(13.9 mL, 100 mmol) under nitrogen. The reaction mixture wasstirred overnight, diluted with 100 mL CH2Cl2, washed with 1 NHCl (twice), saturated NaCl (twice), and then dried over MgSO4.The solvent was evaporated at 30 C. The crude ester 3 was dissolvedin 10% KOH in ethanol (20 mL). The reaction mixture wasrefluxed for 3 h and then neutralized with 1 N HCl solution. Theprecipitate formed was filtered off and washed with water to givethe acid. The product was further recrystallized from MeOH/etherto give off white solid in 93.2% yield (23.4 g), m.p. 74-75 C. IR(KBr): 3664 (br, OH), 3490 (br, OH), 2987-2901 (C-H stretching),1744 (CO, acid), 1696 (CO, amide), 1475 (C-N), 1407 (O-H deformation),1056 (C-OH stretching) cm1. 1H NMR (500 MHz,DMSO-d6): d 3.62 (2H, s, CH2), 3.97 (2H, s, CH2), 4.20 (2H, s, CH2),7.16-7.19 (3H, m, Ar-H), 7.25 (2H, t, Ar-H), 12.1 (2H, br.s, 2 O-H). 13C NMR (125 MHz, DMSO-d6): d 48.86 (CH2), 50.72 (CH2),126.95 (Ar-H), 128.70 (Ar-H), 129.77 (Ar-H), 135.77 (Ar-H),171.15 (CO), 171.39 (CO), 171.76 (CO). Elemental analysis:Anal. Calc. for C12H13NO5: C, 57.37; H, 5.22; N, 5.58. Found: C,57.66; H, 4.94; N, 5.49% |