Structure of 2-(Benzyloxy)acetaldehyde
CAS No.: 60656-87-3
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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. : | 60656-87-3 |
Formula : | C9H10O2 |
M.W : | 150.17 |
SMILES Code : | O=CCOCC1=CC=CC=C1 |
MDL No. : | MFCD00191779 |
InChI Key : | NFNOAHXEQXMCGT-UHFFFAOYSA-N |
Pubchem ID : | 108989 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.22 |
Num. rotatable bonds | 4 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 42.31 |
TPSA ? Topological Polar Surface Area: Calculated from |
26.3 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.36 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.1 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.25 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.17 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.18 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.41 |
Log S (ESOL):? ESOL: Topological method implemented from |
-1.6 |
Solubility | 3.74 mg/ml ; 0.0249 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-1.24 |
Solubility | 8.54 mg/ml ; 0.0569 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.88 |
Solubility | 0.199 mg/ml ; 0.00133 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 |
Yes |
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) |
Yes |
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 |
-6.44 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) |
1.15 |
* 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 sodium tris(acetoxy)borohydride; In 1,1-dichloroethane; at 20℃; | A mixture of 4-hydroxybutylamine (4.0 g, 44.9 mmol), tørt-butyldimethyl-silyl chloride (7.4 g, 49.3 mmol) and imidazole (6.7 g, 98.7 mmol) in dichloromethane (150 mL) was stirred at room temperature for 2 hours. The product mixture was washed successively with aqueous NaHCO3, water, EPO <DP n="67"/>and brine. The organic extract was dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. This intermediate silylated aminoalcohol was used without further purification. To a mixture of the amine (1.0 g, 4.9 mmol) and benzyloxyacetaldehyde (0.74 g, 4.9 mmol) in dichloroethane (15 mL) at room temperature, sodium triacetoxyborohydride (1.3 g, 6.3 mmol) was added. The reaction mixture was concentrated under vacuum. The residue was partitioned between ethyl acetate and aqueous sodium carbonate. The organic extract was dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. The residue was subjected to column chromatography on silica gel eluting with 2% methanol in dichloromethane. Collection and concentration of appropriate fractions afforded the title silyloxybutyl-amine. lH NMR (400 MHz, CDCI3) δ 7.33 -7.25 (m, 5H), 4.51 (s, 2H), 3.60 (m, 4H), 2.79 (br t, J = 4.9 Hz, 2H)52.60 (br t, 2 H), 1.52 (br signal, 5 H), 0.87 (s, 9H), 0.03 (s, 6H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
49% | In methanol; at 20℃; for 24h; | Example 15 N-Cyclohexyl-C- (benzyloxy) methyl nitrone Benzyloxy acetaldehyde (500 mg, 3.33 mmol) and tert-butyl hydroxyl amine hydrochloride (596 mg, 4.0 mmol) in methanol (lOmL) were stirred together at ambient temperature for 24 hrs. The mixture was then concentrated to dryness, the crude mixture was dissolved in ethyl acetate (20 ml), washed with water (2 x 40 ml), dried (Na2SO4) and concentrated and the crude product was chromatographed on silica gel to obtain the title compound (363 mg, 49percent). MS: m/z = 248 (MH+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | 6-Bromo-2-chloro-3-iodopyridine (1.50 g, 4.71 mmol) was dissolved in THF (15 mL) and cooled to -78 C, followed by addition of isopropylmagnesium chloride-lithium chloride complex (3.99 mL, 5.18 mmol). The mixture was stirred at -78C for 1 h. 2- (benzyloxy)acetaldehyde (0.849 g, 5.65 mmol) was added and the resulting mixture warmed to 0C and stirred for 2 h. The mixture was treated with saturated NH4C1 and extracted with ethylacetate. The organic layer was washed with brine, dried (Na2SO4), filtered and concentrated in vacuo to gave 2-(benzyloxy)-1-(6-bromo-2-chloropyridin-3-yl)ethanol (1.54g, yield: 95%). MS (M+H): 344. | |
95% | 6-Bromo-2-chloro-3-iodopyridine (1.50 g, 4.71 mmol) was dissolved in THF (15mL) and cooled to -78 C, followed by addition of isopropylmagnesium chloride-lithiumchloride complex (3. 99 mL, 5.18 mmol). The mixture was stirred at -78C for 1 h. 2-(benzyloxy)acetaldehyde (0.849 g, 5.65 mmol) was added and the resulting mixture warmed to0 oc and stirred for 2 h. The mixture was treated with saturated NH4Cl and extracted with ethyl10 acetate. The organic layer was washed with brine, dried (Na2S04), filtered and concentrated in15vacuo to gave 2-(benzyloxy)-1-(6-bromo-2-chloropyridin-3-yl)ethanol (1.54g, yield: 95%). MS(M+Ht: 344. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N,N-dimethylbenzylamine prolinol trimethylsilyl ether; benzoic acid; In isopropyl alcohol; at 25℃; for 24h; | General procedure: The synthesis of catalysts 1 and 2,13 along with ILS-PhCO2H14 is described elsewhere. For the Michael reactions herein, benzyloxyacetaldehyde (0.8mmol) was added to a solution of the catalyst (0.02mmol, 5mol%), nitroolefin (0.4mmol) and benzoic acid (0.2mmol, 50mol%) in isopropanol (0.5mL) at room temperature. The reaction mixture was stirred until complete conversion of the starting materials (monitored by TLC). The solvent was removed and the product was purified by flash column chromatography (silica gel, hexane/AcOEt) to afford the Michael adduct. Percentage yields and syn/anti ratios were determined by 1H NMR spectroscopy. Racemates were synthesized using morpholine as a catalyst in order to identify enantiomers. Enantiomeric excess determinations were made based on comparisons with previously reported literature for determinations.16 Similar chiral HPLC conditions were used for the separation of the enantiomers for each reaction and based on the retention times, NMR and IR data, the identity of each enantiomer was determined. |