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CAS No. : | 1346674-10-9 | MDL No. : | MFCD08704361 |
Formula : | C11H19NO4 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | GFAKQSWJCMKEGE-UHFFFAOYSA-N |
M.W : | 229.27 | Pubchem ID : | 53485131 |
Synonyms : |
|
Num. heavy atoms : | 16 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 0.82 |
Num. rotatable bonds : | 6 |
Num. H-bond acceptors : | 4.0 |
Num. H-bond donors : | 0.0 |
Molar Refractivity : | 62.68 |
TPSA : | 55.84 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.91 cm/s |
Log Po/w (iLOGP) : | 2.95 |
Log Po/w (XLOGP3) : | 1.11 |
Log Po/w (WLOGP) : | 1.04 |
Log Po/w (MLOGP) : | 1.03 |
Log Po/w (SILICOS-IT) : | 0.86 |
Consensus Log Po/w : | 1.4 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -1.56 |
Solubility : | 6.25 mg/ml ; 0.0272 mol/l |
Class : | Very soluble |
Log S (Ali) : | -1.88 |
Solubility : | 3.05 mg/ml ; 0.0133 mol/l |
Class : | Very soluble |
Log S (SILICOS-IT) : | -1.2 |
Solubility : | 14.3 mg/ml ; 0.0625 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 1.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.36 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | 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 |
---|---|---|
With diisobutylaluminium hydride In dichloromethane Inert atmosphere; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: diisobutylaluminium hydride / dichloromethane / Inert atmosphere 2: benzene / Reflux; Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: diisobutylaluminium hydride / dichloromethane / Inert atmosphere 2: benzene / Reflux; Inert atmosphere 3: triethylamine / tetrahydrofuran / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: diisobutylaluminium hydride / dichloromethane / Inert atmosphere 2: benzene / Reflux; Inert atmosphere 3: triethylamine / tetrahydrofuran / Inert atmosphere 4: hydrogen / ethanol / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 5 steps 1: diisobutylaluminium hydride / dichloromethane / Inert atmosphere 2: benzene / Reflux; Inert atmosphere 3: triethylamine / tetrahydrofuran / Inert atmosphere 4: hydrogen / ethanol / Inert atmosphere 5: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / dichloromethane / 2 h / 20 °C / Inert atmosphere |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 6 steps 1: diisobutylaluminium hydride / dichloromethane / Inert atmosphere 2: benzene / Reflux; Inert atmosphere 3: triethylamine / tetrahydrofuran / Inert atmosphere 4: hydrogen / ethanol / Inert atmosphere 5: N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / dichloromethane / 2 h / 20 °C / Inert atmosphere 6: lithium hydroxide / water; tetrahydrofuran; methanol / 2 h / 20 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: azetidine-3-carboxylic acid ethyl ester hydrochloride With triethylamine In dichloromethane at 0℃; for 0.5h; Stage #2: di-<i>tert</i>-butyl dicarbonate In dichloromethane at 0℃; for 3h; | 267 Example 267 - Preparation of Intermediate 61 Example 267 - Preparation of Intermediate 61 The synthesis of Intermediate 61 followed the procedure of General Procedure 7 following: Intermediate 60 Intermediate 61 To a cooled solution (0°C) of ethyl azetidine-3-carboxylate hydrochloride (70 g, 424 mmol) in dichloromethane (700 mL) was added triethylamine (119 mL, 848 mmol) dropwise over 30 min, followed by di-tert butyl dicarbonate (111 g, 509 mmol). After stirring at this temperature for 3 hours, the mixture was concentrated under reduced pressure. The mixture was diluted with water (20 mL) and extracted into dichloromethane (3 x 100 mL). The combined organic layers were washed with brine (2 x 10 mL), dried over sodium sulfate, filtered and concentrated under reduced pressure to give 1-(tert-butyl) 3-ethyl azetidine-1,3-dicarboxylate (Intermediate 61, 40 g, yield: 42%) as an oily residue that was used without further purification into the next step. m/z 230.23 [M+H]+; TLC System: 10% Methanol- dichloromethane; Rf- 0.7. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With lithium hexamethyldisilazane In tetrahydrofuran for 2h; | 268 Example 268 - Preparation of Intermediate 62 Example 268 - Preparation of Intermediate 62 The synthesis of Intermediate 62 followed the procedure of General Procedure 2 following: Intermediate 61 Intermediate 62 To a cooled (0°C) solution of 1-(tert-butyl) 3-ethyl azetidine-1,3-dicarboxylate (Intermediate 61, 1 g, 4.36 mmol in THF (50 mL), dry acetonitrile (0.32 mL, 8.7 mmol) was added. After 10 min, LHDMS (1M in THF, 8.7 mL, 8.7 mmol) was added. After stirring at 0°C for 2 hours, the mixture was quenched with saturated citric acid solution until pH=5 and extracted into Ethyl acetate (3 x 50 mL). The combined organic layers were dried over sodium sulfate, filtered and concentrated under reduced pressure to give tert-butyl 3-(2-cyanoacetyl)azetidine-1-carboxylate (Intermediate 62, 1.2 g, yield: 99%) as an oily residue that was used without further purification into the next step. m/z 225.02 [M+H]+; TLC System: 10% Methanol- dichloromethane; Rf-0.5. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: [4,4′-bis(1,1-dimethylethyl)-2,2′-bipyridine-N1,N1′]bis{3,5-difluoro-2-[5-(trifluoromethyl)-2-pyridinyl-κN]phenyl-κC}iridium(III) hexafluorophosphate; trifluoroacetic acid; sodium persulfate / acetonitrile; water / 21 h / 20 - 25 °C / Sealed tube; Inert atmosphere; Irradiation 2: trifluoroacetic acid / dichloromethane / 18 h / 20 - 25 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
72% | With sodium persulfate; [4,4′-bis(1,1-dimethylethyl)-2,2′-bipyridine-N1,N1′]bis{3,5-difluoro-2-[5-(trifluoromethyl)-2-pyridinyl-κN]phenyl-κC}iridium(III) hexafluorophosphate; trifluoroacetic acid In water; acetonitrile at 20 - 25℃; for 21h; Sealed tube; Inert atmosphere; Irradiation; diastereoselective reaction; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
2.53 g | Stage #1: 1-(tert-butyl) 3-ethyl azetidine-1,3-dicarboxylate With lithium hexamethyldisilazane In tetrahydrofuran; ethylbenzene at -78℃; for 0.25h; Inert atmosphere; Stage #2: With carbon tetrabromide In tetrahydrofuran; ethylbenzene at 20℃; for 20h; | 52.1 Step 1.1-(tert-Butyl) 3-ethyl 3-bromoazetidine-1,3-dicarboxylate. A mixture of LHMDS (1.0 M in THF/ethyl benzene, 15.8 mL, 15.8 mmol) and dry THF (60 mL) under N2 was cooled to -78°C. A solution of ethyl 1-boc-azetidine-3-carboxylate (3.01 g, 13.1 mmol) in dry THF (30 mL) was added dropwise, and the mixture was stirred at -78 °C for 15 min. A solution of CBr4 (6.56 g, 19.8 mmol) in dry THF (30 mL) was added dropwise, and the mixture was warmed to rt and stirred for 20h. The reaction mixture was diluted with Et2O (350 mL), washed with saturated aqueous NaHCO3 (2×250 mL) and brine (250 mL), dried over Na2SO4, decanted and concentrated. The residue was purified by flash chromatography (EtOAc/Hexanes) to afford the title compound (2.53g) as an orange oil.1H NMR (500 MHz, CDCl3) δ ppm 4.64 (dd, 2H), 4.25-4.33 (m, 4H), 1.45 (s, 9H), 1.33 (t, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
677 mg | With potassium hexamethylsilazane In tetrahydrofuran; toluene at -78 - 20℃; | A4.34.1 A4.34.1 3-Ethyl-azetidine-1,3-dicarboxylic acid 1 -tert-butyl ester 3-ethyl ester To a solution of ethyl 1-Boc-azetidine-3-carboxylate (993 mg) and iodoethane (0.338 mL) in THF (10 mL) was added potassium bis(trimethylsilyl)amide (1.55 mL) as a solution in toluene (10 mL) at -78°C. The reaction was stirred overnight and allowed to slowly warm up to RT. The reaction was quenched by the addition of aqueous aq. sat. NH4CI (20 mL) and diluted with water (20 mL) and EA (20 mL). The phases were separated and the aqueous phase was extracted with EA (3x, 30 mL). The combined organic phases were washed with brine, dried over MgS04 and concentrated in vacuo. The product was obtained as 677mg yellow oil. LC-MS (A) tR = 0.88min; [M+H]+: 257.16 |
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