Structure of 5918-93-4
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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| CAS No. : | 5918-93-4 |
| Formula : | C3H4N2O |
| M.W : | 84.08 |
| SMILES Code : | O=C1NC=CN1 |
| MDL No. : | MFCD00040252 |
| InChI Key : | AICIYIDUYNFPRY-UHFFFAOYSA-N |
| Pubchem ID : | 22208 |
| GHS Pictogram: |
|
| Signal Word: | Warning |
| Hazard Statements: | H302 |
| Precautionary Statements: | P280-P305+P351+P338 |
| Num. heavy atoms | 6 |
| Num. arom. heavy atoms | 5 |
| Fraction Csp3 | 0.0 |
| Num. rotatable bonds | 0 |
| Num. H-bond acceptors | 1.0 |
| Num. H-bond donors | 2.0 |
| Molar Refractivity | 21.41 |
| TPSA ? Topological Polar Surface Area: Calculated from |
48.65 Ų |
| Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
0.63 |
| Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
-0.86 |
| Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
-0.3 |
| Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
-1.08 |
| Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.42 |
| Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
-0.04 |
| Log S (ESOL):? ESOL: Topological method implemented from |
-0.44 |
| Solubility | 30.8 mg/ml ; 0.366 mol/l |
| Class? Solubility class: Log S scale |
Very soluble |
| Log S (Ali)? Ali: Topological method implemented from |
0.32 |
| Solubility | 175.0 mg/ml ; 2.09 mol/l |
| Class? Solubility class: Log S scale |
Highly soluble |
| Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.03 |
| Solubility | 7.81 mg/ml ; 0.0929 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 |
-7.42 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 |
2.0 |
| 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 |
0.0 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) |
1.0 |
* 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 |
|---|---|---|
| aluminium trichloride; In nitrobenzene; | EXAMPLE 14 4-Benzoyl-1,3-dihydro-2H-imidazol-2-one To 51 ml of nitrobenzene is added 1.68 g of 1,3-dihydro-2H-imidazol-2-one, 5.3 g of aluminum chloride and 3.1 g of benzoyl chloride. The mixture is stirred for 3 hours at 60° C. and poured into ice water. The solids are filtered, washed with ether and recrystallized twice from methyl alcohol-water to afford the title compound. M.P. 329°-30° C. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| aluminium trichloride; In nitrobenzene; | EXAMPLE 13 1,3-Dihydro-4-(2-thienoyl)-2H-imidazol-2-one In 50 ml of nitrobenzene is combined 13.3 g of aluminum chloride, 4.2 g of 1,3-dihydro-2H-imidazol-2-one and 8.1 g of thienoyl chloride. The mixture is stirred at 60° C. for 3 hours and poured over ice water. The solids are filtered, washed with ether and recrystallized twice from ethanol-water to afford the title compound. M.P. 339°-42° C. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 45% | With aluminum (III) chloride; In nitrobenzene; at 65℃; for 6h; | To a solution of dihydroimidazolone 1a (1.0 g, 11.9 mmol) in 24 mL 1M AlCl3 in nitrobenzene was added 2-nitrobenzoyl chloride (2.2 g, 11.9 mmol), and the reaction was heated in a 65° C. oil bath for 6 h. The reaction was poured over ice during which a solid formed. The reaction was filtered through a sintered glass funnel and the solid washed with water and diethyl ether and dried in vacuum dessicator to give 1.26 g (45percent yield) of 4-nitrobenzoyl-1,3-dihydroimidazol-2-one 1b. |
[ 5918-93-4 ]
[ 844904-40-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 20% | With copper(l) iodide; potassium carbonate; N,N`-dimethylethylenediamine; In 1,4-dioxane; at 150℃; for 1.5h;microwave irradiation; | Example 145 1-(3-{2-[4-(2-Methyl-5-quinolinyl)-1-piperazinyl]ethyl}phenyl)-1, 3-dihydro-2H- imidazol-2-one dihydrochloride (E145); A mixture of 5-{4-T2-(3-IODOPHENYL) ETHYL]-1-PIPERAZINYL}-2-METHYLQUINOLINE (117 mg, 0.256 mmol), 1, 3-dihydro-2H-imidazol-2-one (84 mg, 1.023 mmol, Whitney, R. A. , Tet. Lett. 1981, 22,2063-2066), potassium carbonate (53 mg, 0.384 MMOL), copper (I) iodide (244 mg, 1.28 MMOL) and N, N'-dimethyl-1, 2-ethanediamine (163 CL, 135 mg, 1.536 MMOL) and dioxane (2.5 mL) was heated at 150°C for 90 min under microwave irradiation. The mixture was cooled to room temperature and partitioned between water and ethyl acetate. The organic layer was dried over magnesium sulfate and concentrated under reduced pressure. The crude compound was purified by flash chromatography on silica gel, eluting with DICHLOROMETHANE-METHANOL (97: 3) affording the title compound in 20percent yield (23mg). The free base was converted into its DIHYDROCHLORIDE salt by dissolving the compound in DICHLOROMETHANE and adding a 1 M ethereal solution of HCI (2.1 eq) dropwise. A yellow solid precipitated and the suspension was stirred for 15 min. The solvent was removed under reduced pressure; the residue was triturated with ether. The title compound was then recovered by filtration (yield quantitative). MS: (ES/+) m/z: 414 [MH+] C25H27N5O requires 413. 1H-NMR (400MHZ, D6-DMSO) No. (ppm): 10.75 (1H, bs), 10.28 (s, 1H), 8.78 (bs, 1H), 7.84 (bs, 2H), 7.7 (bs, 1H), 7.69 (t, 1H), 7.56 (dd, 1H), 7. 38 (t, 1H), 7.36 (bs, 1H), 7.13 (d, 1H), 6.92 (dd, 1H), 6.58 (dd, 1H), 3.69 (bd, 2H), 3.5-3. 2 (8H), 3.12 (m, 2H), 2.81 (bs, 3H). |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 0.4 g (12.6%) | With sodium hexamethyldisilazane; In di-isopropyl ether; water; N,N-dimethyl-formamide; 4-methyl-2-pentanone; | a) Sodium bis(trimethylsilyl)amide (5 ml) was added to a solution of 1,3-dihydro-2H-imidazol-2-one (0.84 g) in N,N-dimethylformamide (50 ml), stirred under a N2 flow and cooled in an ice-bath. The reaction mixture was stirred for 30 minutes. Intermediate 1 (2.69 g) was added portionwise and the resulting reaction mixture was stirred for 16 hours at RT, then for 2 hours at 50° C. The reaction mixture was stirred in methyl isobutyl ketone (200 ml)/(50 ml) water. The solvent was evaporated and methyl isobutyl ketone (100 ml) was added and azeotroped on the rotary evaporator. The mixture was purified by column chromatography over silica gel (eluent: CH2 Cl2 /(CH3 OH/NH3) 97/3). The desired fractions were collected and the solvent was evaporated. The white solid was stirred in diisopropyl ether, filtered off, washed with diisopropyl ether and dried, yielding 0.4 g (12.6percent) of 1-[2-[3-(cyclopentyloxy)-4-methoxyphenyl]-2-oxoethyl]-1,3-dihydro-2H-imidazol-2-one (comp. 1; mp. 201.1° C.). |
| 0.4 g (12.6%) | With sodium hexamethyldisilazane; In water; N,N-dimethyl-formamide; 4-methyl-2-pentanone; | b) Sodium bis(trimethylsilyl)amide (5 ml) was added to a solution of 1,3-dihydro-2H-imidazol-2-one (0.84 g) in N,N-dimethylformamide (50 ml), stirred under a N2 flow and cooled in an ice-bath. The reaction mixture was stirred for 30 minutes. Intermediate 1 (2.69 g) was added portionwise and the resulting reaction mixture was stirred for 16 hours at RT, then for 2 hours at 50° C. The reaction mixture was stirred in methyl isobutyl ketone/water (200 ml/50 ml). The solvent was evaporated and methyl isobutyl ketone (100 ml) was added and azeotroped on the rotary evaporator. The mixture was purified by column chromatography over silica gel (eluent: CH2 Cl2 /(CH3 OH/NH3) 97/3). The desired fractions were collected and the solvent was evaporated. The white solid was stirred in DIPE, filtered off, washed with DIPE and dried, yielding 0.4 g (12.6percent) of 1-[2-[3-(cyclopentyloxy)-4methoxyphenyl]-2-oxoethyl]-1,3-dihydro-2H-imidazol-2-one (interm. 2; mp. 201.1° C.). |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| aluminium trichloride; In dichloromethane; | EXAMPLE 3 1,3-Dihydro-4-(1-oxobutyl)-2H-imidazol-2-one In 10 ml of dichloromethane is placed 1.0 g of 1,3-dihydro-2H-imidazol-2-one, 1.28 g of butyryl chloride and 4.8 g of aluminum chloride. The mixture is refluxed and stirred for 2 hours after which it is poured into water. The precipitate is collected, washed with water, and recrystallized from ethanol:water, to give the title compound, m.p. 268°-270° C. |
[ 5918-93-4 ]
[ 455-19-6 ]
[ 106-49-0 ]

[ 5918-93-4 ]
[ 924-44-7 ]
[ 106-49-0 ]
