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CAS No. : | 2827-56-7 | MDL No. : | MFCD02093080 |
Formula : | C3H6ClN3O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WEOHANUVLKERQI-UHFFFAOYSA-N |
M.W : | 151.55 | Pubchem ID : | 12472963 |
Synonyms : |
|
Chemical Name : | 1-Aminohydantoin hydrochloride |
Num. heavy atoms : | 9 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 0.33 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 3.0 |
Num. H-bond donors : | 2.0 |
Molar Refractivity : | 38.41 |
TPSA : | 75.43 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -7.8 cm/s |
Log Po/w (iLOGP) : | 0.0 |
Log Po/w (XLOGP3) : | -0.81 |
Log Po/w (WLOGP) : | -1.55 |
Log Po/w (MLOGP) : | -0.95 |
Log Po/w (SILICOS-IT) : | -1.18 |
Consensus Log Po/w : | -0.9 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 2.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -0.27 |
Solubility : | 81.5 mg/ml ; 0.538 mol/l |
Class : | Very soluble |
Log S (Ali) : | -0.29 |
Solubility : | 76.9 mg/ml ; 0.507 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | 0.54 |
Solubility : | 524.0 mg/ml ; 3.46 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 3.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.83 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
In isopropyl alcohol; for 16h;Molecular sieve; Heating / reflux; | To a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (ALDRICH, 3 g, 20 mmol) in /-PrOH (80 mL), /'so-butyraldehyde (ALDRICH, 1.46 ml, 20 mmol) and 3A molecular sieves (2 g) were added and the resulting reaction mixture was then heated to reflux. After 16 hours, it seems the reaction has almost reached completion, and hence the reaction mixture was filtered. The filtrate was then added, under an inert atmosphere, to a suspension of platinum (IV) oxide (ALDRICH, 0.4 g) in /-PrOH (10 mL) to which glacial acetic acid (2 mL) had been previously added. The resulting reaction mixture was then hydrogenated at room temperature and 35 p.s.i for 5 hours. The suspension was filtered and the solvent was removed under reduced pressure. The crude reaction mixture was purified by flash chromatography (hex/EtOAc 1:1) to give the title compound. 1H NMR (300 MHz, DMSO-d6) 5 ppm: 10.70 (br.s, 1H), 5.01 (m, 1H), 3.95 (s, 2H), 2.58 (m, 2H), 1.62 (m, 1H), 0.86 (d, 6H), [ES- MS] m/z 170 (M-H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In isopropyl alcohol; for 24h;Molecular sieve; Heating / reflux; | To a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (ALDRICH, 3 g, 20 mmol) in /-PrOH (80 ml_), trimethylacetaldehyde (ALDRICH, 1.74 ml, 20 mmol) and 3A molecular sieves (2 g) were added and the resulting reaction mixture was then heated to reflux. After 24 hours, it seems the reaction has almost reached completion, and hence the reaction mixture was filtered. The filtrate was then added, under an inert atmosphere, to a suspension of platinum (IV) oxide (ALDRICH, 0.4 g) in /-PrOH (10 mL) to which glacial acetic acid (2 mL) had been previously added. The resulting reaction mixture was then hydrogenated at room temperature and 2.5 bar for 24 hours. The suspension was filtered and more catalyst (Pt02, 0.3 g) was added to the filtrate. The mixture was then hydrogenated at room temperature and 2.5 bar for further 4 h, before the reaction reached completion. The suspension was then filtered and the solvent was removed under reduced pressure. The crude reaction mixture was purified by flash chromatography (hex/EtOAc 2:1) to give the title compound. 1H NMR (300 MHz, DMSO-d6) 5 ppm: 10.71 (br.s, 1H), 4.91 (m, 1H), 3.96 (s, 2H), 2.58 (s, 2H), 0.87 (s, 9H). [ES+ MS] m/z 186 (MH)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With pyridine; In thionyl chloride; | EXAMPLE VII 1-(p-fluorocinnamamido)hydantoin A mixture of p-fluorocinnamic acid (36 g, 0.22 mole) in SOCl2 (75 ml) was heated under reflux with stirring for 1 hour. The excess SOCl2 was removed in vacuo and the residue fluxhed with benzene. To the resulting acid chloride was added <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (39 g, 0.26 mole) and 250 ml of pyridine and the resulting reaction mixture was heated on the steam bath for 3 hours. The mixture was poured onto HCl/ice and the product allowed to crystallize. Recrystallization from CH3 NO2 provided analytical material which melted at 241-243. Yield: 35 g, 62%. Anal. Calcd. for C12 H10 FN3 O3: C, 54.75; H, 3.83; N, 15.97. Found: C, 54.73; H, 3.85; N, 15.97. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
116 g (73.5%) | With pyridine; hydrogenchloride; thionyl chloride; | B. 1 -(m-Fluorocinnamamido)hydantoin To 99.5 g (0.6 mole) of m-fluorocinnamic acid was added dropwise thionyl chloride (600 ml) followed by heating at reflux for 2 hours. The excess thionyl chloride was removed in vacuo and the residue remaining flushed with dry benzene. The reaction residue was chilled on an ice bath followed by the rapid addition of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (91 g, 0.6 mole). To the cold reaction mixture was added dropwise pyridine (600 ml). After the addition was complete the cold reaction mixture was heated on a steam bath for 3 hours then poured into 6 l. of HCl/ice. Upon standing at room temperature overnight the acidic reaction mixture was filtered and washed with water to give 116 g (73.5%) which after recrystallization from CH3 NO2 melted at 294-296. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; In pyridine; benzene; | EXAMPLE IV 1-(4-Chlorocinnamamido)hydantoin To 4-chlorocinnamic acid (46 g, 0.25 mole) was added dropwise SOCl2 (140 ml). The mixture was heated under reflux for 45 minutes after the addition was complete. After stirring at room temperature for 1 hour the SOCl2 was removed in vacuo. Dry benzene was added and then removed in vacuo. The acid chloride residue was treated with <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (42 g, 0.275 mole) in 350 ml of pyridine, then heated under reflux for 2 hrs. After cooling slightly, the reaction mixture was poured into a mixture of 200 ml of con HCl and 1500 ml of ice. After standing overnight the product was removed by filtration and washed with H2 O. Recrystallization from NaOH/dimethylformamide (H2 O) provided analytical material which melted at 230-235 (25 g, 36%). Anal. Calcd. for C12 H10 ClN3 O3: C, 51.53; H, 3.60; N, 15.03 Found: C, 51.49; H, 3.58; N, 14.89. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
54 g (82%) | With pyridine; hydrogenchloride; thionyl chloride; | D. 1-(3-Chloro-4-fluorocinnamamido)hydantoin To 44 g (0.22 mole) of <strong>[155814-22-5]3-chloro-4-fluorocinnamic acid</strong> was added dropwise thionyl chloride (250 ml) followed by heating at reflux for 2 hours. The excess thionyl chloride was removed in vacuo and the residue remaining flushed with dry benzene. The reaction residue was chilled on an ice bath followed by the rapid addition of 1 -aminohydantoin hydrochloride (33 g, 0.22 mole). To the cold reaction mixture was added dropwise pyridine (250 ml). After the addition was complete the cold reaction mixture was heated on a steam btah for 3 hours then poured into 3.5 l. of HCl/ice. Upon standing at room temperature overnight the acidic reaction mixture was filtered and washed with water to give 54 g (82%). The analytical sample was prepared by one recrystallization from CH3 NO2 (DARCO) m.p. 258-260. Anal. Calcd. for C12 H9 ClFN3 O3: C, 48.42; H, 3.05; N, 14.12. Found: C, 48.45; H, 3.18; N, 14.04. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; In pyridine; benzene; | EXAMPLE III 1-(3-Chloro-4-methylcinnamamido)hydantoin To 3-chloro-4-methylcinnamic acid (50 g, 0.25 mole) was added dropwise SOCl2 (140 ml). The mixture was heated under reflux for 45 min. after the addition was complete. After stirring at room temperature for 1 hour the SOCl2 was removed in vacuo. Dry benzene was added and then removed in vacuo. The acid chloride residue was treated with 1 -aminohydantoin hydrochloride (42 g, 0.275 mole) in 350 ml of pyridine, then heated under reflux for 2 hr. After cooling slightly, the reaction mixture was poured into a mixture of 200 ml of con HCl and 1500 ml of ice. After standing overnight the product was removed by filtration and washed with H2 O. Recrystallization from CH3 NO2 provided analytical material which melted at 271-273 (28 g, 38%). Anal. Calcd. for C13 H12 ClN3 O3: C, 53.16; H, 4.12; N, 14.31. Found: C, 52.82; H, 4.11; N, 14.27. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In pyridine; thionyl chloride; | EXAMPLE VI 1-(4-Chloro-3-trifluoromethylcinnamamido)hydantoin A stirred mixture of 4-chloro-3-trifluoromethylcinnamic acid (50 g, 0.2 mole) in 200 ml of SOCl2 was heated at reflux for 2 hours. The excess SOCl2 was removed in vacuo and the residue flushed with dry benzene. The residue was treated with a mixture of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (30 g, 0.2 mole) in 400 ml of pyridine. The reaction mixture was heated at reflux for 3 hours; then poured into ice/HCl. The crude residue (74 g, 100%) was recrystallized from CH3 NO2 (Darco) to give an analytical sample melting at 270-273. Anal. Calcd. for C13 H9 ClF3 N3 O3: C, 44.91; H, 2.61; N, 12.09. Found: C, 44.98; H, 2.73; N, 11.75. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With pyridine; In thionyl chloride; | EXAMPLE VIII 1-(3-Chloro-4-ethylcinnamamido)hydantoin 3-Chloro-4-ethylcinnamic acid (50 g, 0.24 mole) in SOCl2 (100 ml) was heated under reflux for about 1 hour. The excess SOCl2 was removed in vacuo and the residue flushed with benzene. The acid chloride was treated with <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (40 g, 0.26 mole) and pyridine (300 ml) and the reaction mixture heated on a steam bath for 4 hours. The reaction mixture was poured onto HCl/ice to precipitate the product. (40 g, 55%). Several recrystallizations from CH3 NO2 provided analytical material which melted at 231-234. Anal. Calcd. for C14 H14 ClN3 O3: C, 54.64; H, 4.59; N, 13.66. Found: C, 54.22; H, 4.65; N, 13.91. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
29.48 g (100%) | In ethanol; water; | 1-[[1H-Pyrrol-2-ylmethylene]amino]-2,4-imidazolidinedione To a solution containing 14.25 g (0.15 mole) of pyrrol-2-carboxaldehyde in 100 ml 95% ethanol was added a solution of 22.80 g (0.15 mole) of <strong>[2827-56-7]1-amino-2,4-imidazolidinedione hydrochloride</strong> in 100 ml water. A pink solid separated immediately. The mixture was diluted with 100 ml water and stirred at ambient temperature for 45 minutes. The solid was filtered, washed with 3 * 30 ml water, air dried for 1 hr., and dried at 60 for 4 hrs. to give 29.48 g (100%) of the product, m.p. 276-279. Recrystallization from dimethylformamide-water gave an analytical sample, m.p. 269-272. Anal. Calcd. for C8 H8 N4 O2: C, 49.99; H, 4.20; N, 29.16. Found: C, 50.08; H, 4.31; N, 29.21. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; trimethyl orthoformate; at 20℃; for 48h;Product distribution / selectivity; | 1.03 g (1.57 mmol) (d) is dissolved in a mixture of 5 ml trimethylorthoformate and 5 ml DMF. Then, 0.24 g (1.57 mmol) 1 -aminohydantoin-hydrochloride and 0.20 g (1.57 mmol) N,N-diisopropylethylamine is added and the reaction mixture is stirred at room temperature for 48 hours. The solvent was removed in the vacuum and water added to the residue and a solid product is obtained. The solid product is the filtered and dried in the vacuum, to obtain 0.73 g crude product. Purification by flash chromatography (eluent: dichlormethane:methanol=90:10) on silicagel yields 0.31 g pure product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
6% | With potassium carbonate; In ethanol; at 20℃;Heating / reflux; | Preparation of Compound 55; 1-Aminohydantoin hydrochloride (0.216 g, 1.47 mmol) and potassium carbonate (200 mg, 1.45 mmol) were added to a solution of N-(2-acetyl-4-chlorophenyl)-trifluoromethanesulfonamide (0.400 g, 1.32 mmol) in ethanol (15 mL). The reaction mixture was stirred at RT over night and then heated at reflux for 10 hrs. The solvent was removed under vacuum and the residue purified using a silica column, eluting first with CH2Cl2 to remove the starting acetophenone and then with MeOH/CH2Cl2 (4%) to obtain Compound 55 (30 mg, 6%). M.p. 164 C. (decomposed). 1H n.m.r. (CDCl3) delta 7.65, 1H, d, J8.8 Hz; 7.65, 1H, d, J2.4 Hz; 7.42, 1H, dd, J18.9 Hz, J22.4 Hz; 4.36, 2H, s; 2.51, 3H, s. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydrogencarbonate; In acetonitrile; at 20℃; for 22h;Cooling with ice; Inert atmosphere; | An ice-cold suspension of 1 -aminohydantoin hydrochloride (457mg, 3.0mmol), cyanuric chloride (500mg, 2.73mmol) and sodium bicarbonate (505mg, 6mmol) in acetonitrile (5mL) was stirred under an atmosphere of nitrogen for 2 h and then stirred at room temperature for 20 h. The reaction mixture was evaporated to dryness under reduced pressure and the residue was extracted with ethyl acetate and the ethyl acetate was separated and dried (MgS04). The crude product (770mg) gave a single spot on thin layer chromatography [silica; CH2Cl2/MeOH (10: 1)] and was used in the next step without further purification. 1H NMR (CD3CN): delta1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | In N,N-dimethyl-formamide; at 20℃; for 5h; | General procedure: To a solution of 5-(3-chlorophenyl)-2-furaldehyde (19a) (127 mg, 500 mumol) in DMF (1.0 mL) was added <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (79.4 mg, 525 mumol) and the mixture was stirred for 5 h at room temperature. The reaction was quenched by the addition of H2O, and the resulting precipitate was collected by filtration with suction and washed with H2O on a funnel. The collected solid was dried in vacuo to afford 20a (166 mg, 90%) as a pale yellow solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | In N,N-dimethyl-formamide; at 20℃; for 5h; | General procedure: To a solution of 5-(3-chlorophenyl)-2-furaldehyde (19a) (127 mg, 500 mumol) in DMF (1.0 mL) was added <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (79.4 mg, 525 mumol) and the mixture was stirred for 5 h at room temperature. The reaction was quenched by the addition of H2O, and the resulting precipitate was collected by filtration with suction and washed with H2O on a funnel. The collected solid was dried in vacuo to afford 20a (166 mg, 90%) as a pale yellow solid. 1H NMR (500 MHz, DMSO-d6) delta 11.28 (1H, s), 7.82 (2H, d, J = 1,8 Hz), 7.73 (1H, d, J = 7.9 Hz), 7.73 (1H, s), 7.49 (1H, d, J = 7.9 Hz), 7.40 (1H, dd, J = 7.9, 1.8 Hz), 7.26 (1H, J = 3.6 Hz), 6.97 (1H, J = 3.6 Hz), 4.35 (2H, s); MS (FAB) m/z 304 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
56% | With 4-methyl-morpholine; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride; In methanol; water; at 20℃; for 19h; | General procedure: To a mixture of N-methylmorpholine (14.5 muL, 115 mumol), DMT-MM 33 (54.0 mg, 192 mumol), and 22a (21.4 mg, 96.1 mumol) in MeOH (1.0 mL) was added a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (16.0 mg, 105 mumol) in H2O (0.1 mL), and the mixture was stirred at room temperature. Stirring was continued for 19 h, then H2O was added to the reaction mixture, and the whole was extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated. The resulting residue was purified by silica gel chromatography (hexane/EtOAc = 1:1) to afford 23a (17.2 mg, 56%) as a white solid. 1H NMR (500 MHz, DMSO-d6) delta 11.33 (1H, s) 10.99 (1H, s), 8.10 (1H, d, J = 1.8 Hz), 7.90 (1H, d, J = 7.9 Hz), 7.50 (1H, t, J = 7.9 Hz), 7.44 (1H, dd, J = 7.9, 1.8 Hz), 7.36 (1H, d, J = 3.6 Hz), 7.30 (1H, d, J = 3.6 Hz); 4.16 (2H, s), MS (FAB) m/z 320 (M+H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With 4-methyl-morpholine; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride; In methanol; water; at 20℃; for 19h; | General procedure: To a mixture of N-methylmorpholine (14.5 muL, 115 mumol), DMT-MM 33 (54.0 mg, 192 mumol), and 22a (21.4 mg, 96.1 mumol) in MeOH (1.0 mL) was added a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (16.0 mg, 105 mumol) in H2O (0.1 mL), and the mixture was stirred at room temperature. Stirring was continued for 19 h, then H2O was added to the reaction mixture, and the whole was extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated. The resulting residue was purified by silica gel chromatography (hexane/EtOAc = 1:1) to afford 23a (17.2 mg, 56%) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
52% | With 4-methyl-morpholine; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride; In methanol; water; at 20℃; for 19h; | General procedure: To a mixture of N-methylmorpholine (14.5 muL, 115 mumol), DMT-MM 33 (54.0 mg, 192 mumol), and 22a (21.4 mg, 96.1 mumol) in MeOH (1.0 mL) was added a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (16.0 mg, 105 mumol) in H2O (0.1 mL), and the mixture was stirred at room temperature. Stirring was continued for 19 h, then H2O was added to the reaction mixture, and the whole was extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated. The resulting residue was purified by silica gel chromatography (hexane/EtOAc = 1:1) to afford 23a (17.2 mg, 56%) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
51% | With 4-methyl-morpholine; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride; In methanol; water; at 20℃; for 19h; | General procedure: To a mixture of N-methylmorpholine (14.5 muL, 115 mumol), DMT-MM 33 (54.0 mg, 192 mumol), and 22a (21.4 mg, 96.1 mumol) in MeOH (1.0 mL) was added a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (16.0 mg, 105 mumol) in H2O (0.1 mL), and the mixture was stirred at room temperature. Stirring was continued for 19 h, then H2O was added to the reaction mixture, and the whole was extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated. The resulting residue was purified by silica gel chromatography (hexane/EtOAc = 1:1) to afford 23a (17.2 mg, 56%) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
89% | With 4-methyl-morpholine; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride; In methanol; water; at 20℃; for 19h; | General procedure: To a mixture of N-methylmorpholine (14.5 muL, 115 mumol), DMT-MM 33 (54.0 mg, 192 mumol), and 22a (21.4 mg, 96.1 mumol) in MeOH (1.0 mL) was added a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (16.0 mg, 105 mumol) in H2O (0.1 mL), and the mixture was stirred at room temperature. Stirring was continued for 19 h, then H2O was added to the reaction mixture, and the whole was extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated. The resulting residue was purified by silica gel chromatography (hexane/EtOAc = 1:1) to afford 23a (17.2 mg, 56%) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With 4-methyl-morpholine; 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride; In methanol; water; at 20℃; for 19h; | General procedure: To a mixture of N-methylmorpholine (14.5 muL, 115 mumol), DMT-MM 33 (54.0 mg, 192 mumol), and 22a (21.4 mg, 96.1 mumol) in MeOH (1.0 mL) was added a solution of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> (16.0 mg, 105 mumol) in H2O (0.1 mL), and the mixture was stirred at room temperature. Stirring was continued for 19 h, then H2O was added to the reaction mixture, and the whole was extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4, and concentrated. The resulting residue was purified by silica gel chromatography (hexane/EtOAc = 1:1) to afford 23a (17.2 mg, 56%) as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | With sodium acetate; triethylamine; In ethanol; at 60℃; for 12h; | Example 54 (E/Z)-l-(l-(3-(quinolin-6-ylmethyl)-3H-[l,2,3]triazolo[4,5-b]pyridin-5- yl)ethylideneamino)imidazolidine-2,4-dione: [337] The title compound was prepared by following the procedure described for step-1 of Example 49 using intermediate 41 (0.100 g, 0.659 mmol), ethanol (2.2 ml), triethylamine (0.1 ml) and 1-aminohytantoin hydrochloride (0.074 g, 0.494 mmol), heating at 60C for 12h. Off-white solid (0.090 g, 68 %). M.P.: 260-264C. ^-NMR (delta ppm, DMSO- d6, 400 MHz): delta 11.36 (s,lH), 8.89 (dd, J = 4.1,1.6 Hz, 1H), 8.61 (d, J = 8.8 Hz, 1H), 8.37 (d, J = 7.4 Hz, 1H), 8.18 (d, J = 8.8 Hz, 1H), 8.03 (d, J = 1.5 Hz, 1H), 8.02 (d, J = 8.8 Hz, 1H), 7.82 (dd, J = 8.7,1.9 Hz, 1H), 7.53 (dd, J = 8.3,4.1 Hz, 1H), 6.19 (s,2H), 4.49(s,2H), 2.51 (s,3H). |
68% | With triethylamine; In ethanol; at 60℃; for 12h; | Example 54 (E/Z)-1-(1-(3-(quinolin-6-ylmethyl)-3H-[1,2,3]triazolo[4,5-b]pyridin-5-yl)ethylideneamino)imidazolidine-2,4-dione The title compound was prepared by following the procedure described for step-1 of Example 49 using intermediate 41 (0.100 g, 0.659 mmol), ethanol (2.2 ml), triethylamine (0.1 ml) and 1-aminohytantoin hydrochloride (0.074 g, 0.494 mmol), heating at 60 C. for 12 h. Off-white solid (0.090 g, 68%). M.P.: 260-264 C. 1H-NMR (delta ppm, DMSO-d6, 400 MHz): delta 11.36 (s, 1H), 8.89 (dd, J=4.1, 1.6 Hz, 1H), 8.61 (d, J=8.8 Hz, 1H), 8.37 (d, J=7.4 Hz, 1H), 8.18 (d, J=8.8 Hz, 1H), 8.03 (d, J=1.5 Hz, 1H), 8.02 (d, J=8.8 Hz, 1H), 7.82 (dd, J=8.7, 1.9 Hz, 1H), 7.53 (dd, J=8.3, 4.1 Hz, 1H), 6.19 (s, 2H), 4.49 (s, 2H), 2.51 (s, 3H).; Step-1: 2-(1-(3-(quinolin-6-ylmethyl)-3H-[1,2,3]triazolo[4,5-b]pyridin-5-yl)ethylidene)hydrazinecarboxamide to a solution of intermediate 41 (0.070 g, 0.230 mmol) in ethanol (2 ml), sodium acetate (0.018 g, 0.230 mmol) and semicarbazide hydrochloride (0.026 g, 0.230 mmol) were added and stirred at RT for 12 h. The reaction mixture was concentrated and the residue was washed with bicarbonate solution, dichloromethane and dried under vacuum. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trifluoroacetic acid; In methanol; at 60℃; | 273 mg (1 mmol) of 4-(diphenylamino)benzaldehyde and 157 mg (1.01 mmol) of <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong> were dissolved in 10 mL of methanol, followed by the addition of 20 of trifluoroacetic acid. After stirring at 60 C overnight, the desired product precipitated out from solution without the need of further purification. 1H NMR (400 MHz, DMSO-J6) delta 7.72 (s, 1H), 7.56 (d, J = 8.4 Hz, 1H), 7.32 (t, J = 7.7 Hz, 2H), 7.17 - 7.02 (m, 3H), 6.95 (d, J = 8.3 Hz, 1H), 4.33 (s, 1H). m/z (ES~) 369.0 ([M-H]). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | In methanol; at 20℃; | Compound BB-12-4 (Supplier: TCI, 0.1g, 0.66mmol) and the compound 12-3-the BB (0.175g,0.66 mmol) was dissolved in dry methanol (10 mL), The reaction was stirred overnight at room temperature under reduced The solvent was removed by atmospheric distillation, to give the compoundwas BB-12-5 (yellow oil, 0.239 g, yield: 100%).It was used directly in the next step without further purification. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In methanol; at 20℃; for 16h; | Compound BB-29-4 (0.500g, 1.32mmol) was dissolved in methanol (5mL), followed by addition of the compound-12-4 the BB(the TCI, 0.199 g of the, 1.32mmol), the reaction solution was reacted at room temperature for 16 hours.The reaction was concentrated under reduced pressure to give the title compoundBB-29-5 (orange oil, 0.550 g of, crude) was used directly in the next reaction. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
89.1% | In water; at 80℃; for 4h; | <strong>[2827-56-7]1-aminohydantoin hydrochloride</strong>(0.3 g, 2 mmol)6 mL of distilled water was added,And intermediate l (0.21 g, l mmol), 80 & lt; 0 & gt; CStirring 4h, filtration,The filter cake was washed with a small amount of cold water and dried to give a light pink solid,The yield was 89.1%, 260 C decomposition |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
46.1% | With N-ethyl-N,N-diisopropylamine; orthoformic acid triethyl ester; at 20℃; for 30h; | To a solution of Compound 101-P (40 mg, 0.03mmol) in trimethylorthoformate (2 mL) was added 1-aminohydantoin.HC1 (6.3 mg, 0.04mmol) and DIPEA (4.9 mg, 0.04 mmol) and the mixture was stirred at room temperature for 30h. The volatiles were concentrated and the residue was taken up by EtOAc (10 ml), which was washed with brine (10 mL x 2). The organic layer was dried over Mg504, concentrated and the residue was purified by prep-TLC to give Compound 101-Q (20 mg, 46.1% yield) as a white solid. LCMS (Method 5-95 AB, ESI): tR = 1.078, [M + Hj = 1255.1. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64% | With acetic acid; at 150℃; for 0.333333h;Microwave irradiation; | General procedure: Method C: A mixture of phthalic anhydride (1 equiv.), amine (1 equiv.), and acetic acid (~1 M) in a 5 mL microwave vial was irradiated at 150 C for 20 min. Water (10 mL) was added and the precipitates were filtered, washed with water (2 × 20 mL), and dried. Unless otherwise mentioned, all products were collected via trituration using EtOH/hexanes. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Ca. 70% | Add 90kg of aminohydantoin hydrochloride, 590kg of water and 66L of acetic acid in a 1000L reaction pot.Mechanical stirring was started, and ice water was cooled to a temperature below 20 C, and 106 L of concentrated sulfuric acid was slowly added thereto, and the dropwise addition was completed in about 1.5 hours.After stirring for 30 to 60 minutes, 160 kg of 5-Nitro-2-furaldehyde diacetate was gradually added, and finally 97 wt% of ethanol 118 L was added.The steam was heated to an internal temperature of 90 C.The reaction was kept warm and stirred for 3 hours, and the reaction solution became cloudy. Two gradients are cooled down to an internal temperature of 5 to 10 CSpecifically, in the present embodiment, first, the purified water is cooled to an internal temperature of 50 C, and then cooled to an internal temperature of 5 to 10 C with ice water.Gradually more yellow solids precipitated.The mash was filtered, and the filter cake was washed with a large amount of purified water in a near neutral state (pH = 6 to 7), and then washed with 95% by weight of ethanol.The crude product was placed in an oven and dried at 70 to 80 C for 3 hours.A yellow crystalline powder, i.e., 1-[[(5-nitro-2-furyl)methylene]amino]-2,4-imidazolidinedione, was obtained. Specifically, in the present embodiment, 1-[[(5-nitro-2-furyl)methylene]amino]-2,4-imidazolidinedione and N,N-dimethylformamide,The charge ratio of purified water and 95% by weight of ethanol is: 1-[[(5-nitro-2-furyl)methylene]amino]-2,4-imidazolidinedione (kg):N,N-dimethylformamide (L): purified water (L): 95% by weight of ethanol (L) = 1: 1.1: 2.2: 1.1.The above feed ratio of N,N-dimethylformamide was added to a 500 L reaction vessel, and 1-[[(5-nitro-2-furanyl)methylene]amino]-2,4-imidazolidine was added. The diketone was stirred at room temperature (23 C) for 40 minutes.Open compressed air for pressure filtration. The material was hydraulically poured into a crystallizing pot, stirred, and purified water was added dropwise to precipitate a yellow solid.Stirring was maintained for 30 minutes.The mash is filtered to obtain a filter cake.The filter cake was washed with a large amount of purified water, and then washed with three times or four times with 95 wt% of ethanol, and dried to obtain a cake.The filter cake was placed in an oven and dried at 70 to 80 C for 3 hours to obtain a yellow crystalline powder, that is, the target product nitrofurantoin.In the present embodiment, the total yield of the nitrofurantoin is about 70%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | In ethanol; at 20℃; for 24h; | 1-Aminohydantoin hydrochloride (80 mg, 5 × 10-1 mmol) and3methoxysalicylaldehyde (120 mg, 0.7 mmol) were dissolved in ethanol(12.0 mL). The mixed solution was reacted for 1 d at 20 C. Whitepowder produced was filtered and washed sequentiallywith chilly ethanoland ether (90mg, 74%). 1H NMR (DMSO d6): delta 11.31 (s, 1H), 10.24(s, 1H), 7.98 (s, 1H), 7.17 (d, J = 7.2 Hz, 1H), 7.01 (d, J = 7.2 Hz, 1H),6.86 (t, J = 8.0 Hz, 1H), 4.39 (s, 2H), 3.81 (s, 3H); 13C NMR(DMSO d6): 169.43, 153.81, 148.36, 146.79, 142.84, 120.35, 119.74,119.60, 113.83, 56.26, 48.92. ESI-MS m/z [HMID + Na]+: calcd,272.06; found, 272.00. Anal. Calc. for C11H11N3O4: C, 53.01; N, 16.86;H, 4.45. Found: C, 52.84; N, 16.54; H, 4.81%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With triethylamine; In ethanol; for 2h;Reflux; | The title compound was prepared generally as described in Scheme 6b. (E)-3-fluoro- 2-hydroxy-5-(4-(pyrrolidin-l-yl)styryl)benzaldehyde (200 mg, 0.64 mmol), 1- aminoimidazolidine-2,4-dione hydrochloride (195 mg, 1.28 mmol), and TEA (195 mg, 1.92 mmol) were dissolved in ethanol. The reaction was refluxed for 2 hours. The solvent was removed, and the residue was filtered. The cake was washed with ethanol and dried in vacuo to give the title compound as orange solid (200 mg, 76% yield). 1H NMR ( DMSO-d6 , 400 MHz) S: 11.42 (br, 1H), 10.78 (br, 1H), 8.01 (s, 1H), 7.51 (s, 1H), 7.40 (d, =8.8 Hz, 2H), 7.02 (d, =l6.4 Hz, 1H), 6.89 (d, =l6.4 Hz, 1H), 6.54 (d, =8.8 Hz, 2H), 4.41 (s, 2H), 3.26 (m, 4H), 1.95 (m, 4H); LC-MS m/z [M+H]+ calc?d for C22H2iFN403, 409; found, 409. |
Tags: 2827-56-7 synthesis path| 2827-56-7 SDS| 2827-56-7 COA| 2827-56-7 purity| 2827-56-7 application| 2827-56-7 NMR| 2827-56-7 COA| 2827-56-7 structure
A812375[ 1958100-83-8 ]
1-Aminoimidazolidine-2,4-dione-5-13C hydrochloride
Reason: Stable Isotope
A1369496[ N/A ]
1-Aminohydantoin hydrochloride-13C,15N3
Reason: Stable Isotope
[ 77-71-4 ]
5,5-Dimethylimidazolidine-2,4-dione
Similarity: 0.57
[ 918538-04-2 ]
Pyrrolo[2,1-f][1,2,4]triazine-2,4(1H,3H)-dione
Similarity: 0.54
[ 67337-73-9 ]
5-Isobutylimidazolidine-2,4-dione
Similarity: 0.54
[ 39236-46-9 ]
1,1'-Methylenebis(3-(3-(hydroxymethyl)-2,5-dioxoimidazolidin-4-yl)urea)
Similarity: 0.50
[ 77-71-4 ]
5,5-Dimethylimidazolidine-2,4-dione
Similarity: 0.57
[ 16935-34-5 ]
5-Isopropylimidazolidine-2,4-dione
Similarity: 0.54
[ 67337-73-9 ]
5-Isobutylimidazolidine-2,4-dione
Similarity: 0.54
[ 77-71-4 ]
5,5-Dimethylimidazolidine-2,4-dione
Similarity: 0.57
[ 16935-34-5 ]
5-Isopropylimidazolidine-2,4-dione
Similarity: 0.54
[ 67337-73-9 ]
5-Isobutylimidazolidine-2,4-dione
Similarity: 0.54
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