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Structure of 3-Bromobenzylamine
CAS No.: 10269-01-9
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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. : | 10269-01-9 |
Formula : | C7H8BrN |
M.W : | 186.05 |
SMILES Code : | NCC1=CC=CC(Br)=C1 |
MDL No. : | MFCD01026119 |
InChI Key : | SUYJXERPRICYRX-UHFFFAOYSA-N |
Pubchem ID : | 457587 |
GHS Pictogram: |
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Signal Word: | Danger |
Hazard Statements: | H302-H314-H412 |
Precautionary Statements: | P273-P280-P305+P351+P338-P310 |
Class: | 8 |
UN#: | 2735 |
Packing Group: | Ⅱ |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.14 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 41.82 |
TPSA ? Topological Polar Surface Area: Calculated from |
26.02 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.98 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
-3.77 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.76 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.3 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.13 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.88 |
Log S (ESOL):? ESOL: Topological method implemented from |
0.95 |
Solubility | 1670.0 mg/ml ; 9.0 mol/l |
Class? Solubility class: Log S scale |
Highly soluble |
Log S (Ali)? Ali: Topological method implemented from |
3.81 |
Solubility | 1210000.0 mg/ml ; 6520.0 mol/l |
Class? Solubility class: Log S scale |
Highly soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.3 |
Solubility | 0.0941 mg/ml ; 0.000506 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) |
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 |
-10.11 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 |
3.0 |
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) |
1.15 |
* 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 |
---|---|---|
100% | With sodium hydroxide; In tetrahydrofuran; water; at 20℃; for 0.5h; | Sodium hydroxide (8.76 g, 219.0 mmol, 2.2 EQ.), di-tert-butyl dicarbonate (26.07 g, 119.45 MMOL, 1.2 EQ. ) AND WATER (100 ML) WERE ADDED TO A STIRRING SOLUTION OF 3-BROMOBENZYLAMINE (22.11 G, 99.55 MMOL, 1.0 EQ. ) IN TETRAHYDROFURAN (75 ML) OVER 30 minutes at room temperature. The mixture was extracted with dichloromethane and water twice. The organic phase was dried and concentrataed to give ter-butyl (3-BROMOBENZYL) -CARBAMATE (34.88G, 100%). LCMS: CALCD 286; OBSD (M+23) 309). |
100% | With sodium hydrogencarbonate; In tetrahydrofuran; at 20℃; for 3h; | A 100-mL round-bottomed flask, equipped with magnetic stirring bar, was charged with THF (10 mL) and (3-bromophenyl) methanamine (1.86 g, 10 mmol) and sodium bicarbonate (1.68 g, 20 mmol), the di-tert-butyl dicarbonate (2.4 g, 11 mmol) was added. The resulted solution was stirred at room temperature for 3 h. The reaction mixture was filtered and the solvents are then removed under reduced pressure, the residue was pure enough for next step without further purification (2.86 g, yield: 100%). m/z 286 (MH-H+). |
99% | In dichloromethane; at 20℃; for 15h; | To a solution of commercially available 3-bromo-benzylamine (938 mg) in dry dichloromethane (10 mL) was added added di-tert-butyl dicarbonate (1.10 g). The resulting clear solution was stirred at room temperature for 15 h and then concentrated to afford the title compound (1.42 g; 99%). [(M-isobutene)H]+=230/232, [MNa]+=308/310. |
93% | With triethylamine; In dichloromethane; at 10℃; for 4h; | A solution of (3-bromophenyl)methanamine (1 g, 5.37 mmol) in dichloromethane (10 mL) at 10 C. was treated with triethylamine (1 .498 mL, 10.75 mmol) then fe/ -butyl dicarbonate (1 .498 mL, 6.45 mmol) and stirred at 10 C for 4 h. Water (10 mL) was added then the mixture extracted with DCM (2 x 10 mL), washed with brine, dried and evaporated and the residue purified by chromatography (silica gel, 10:1 hexanes/ethyl acetate) to afford the desired product (1 .5 g; 93%) as a colorless solid. NMR (500 MHz, CDCI3) delta ppm 7.43 (s, 1 H), 7.39 (d, J = 6.8 Hz, 1 H), 7.20 (d, J = 6.8 Hz, 2H), 4.89 (s, 1 H), 4.29 (d, J = 5.7 Hz, 2H), 1 .46 (s, 9H). |
92% | With triethylamine; In dichloromethane; at 20℃; for 5.3h;Cooling with ice; | Example 104 Production of tert-Butly N-[(3-bromophenyl)methyl]carbamate. A methylene chloride (40 mL) solution of Boc2O(21.2 g, 97 mmol) was added dropwise to a methylene chloride (160 mL) solution of 3-bromobenzylamine (15.0 g, 81 mmol) and triethylamine (23 mL, 162 mmol) over 20 minutes, under ice-cooling, and the mixture was stirred at room temperature for 5 hours. The reaction mixture was washed with water, and an organic layer was then dried over anhydrous sodium sulfate. n-Hexane was added to the residue obtained by distilling off the solvent under a reduced pressure, and the precipitated solid was collected by filtration, to give the captioned compound (19.8 g, 92%). Mp 41-42C. 1H-NMR (DMSO-d6) delta: 1.39 (s, 9H), 4.12 (d, J=6.1 Hz, 2H), 7.23-7.28 (m, 2H), 7.40-7.42 (m, 3H). |
80% | With triethylamine; In dichloromethane; at 20℃; | To a stirred solution of benzylamine derivative (1 equiv.) in dry DCM, triethylamine (1 .5 equiv.) and di-tert-butyl dicarbonate (1 -1 .2 equiv.) were added under azote atmosphere. The reaction mixture was stirred at room temperature until completion. Water was then added, the phases were separated and the aqueous phase was extracted once with DCM. The combined organic layers were washed with brine, dried over Na2S04, filtered and concentrated under vacuum. The crude mixture was then purified by flash column chromatography (0-10% MeOH in DCM) to provide the expected compound. The following compounds are examples illustrating this procedure:; tert-butyl bomophenyl)methyllcarbamate was prepared from 3- bromobenzylamine (2 g, 10.75 mmol). Yield: 2.47g (80%) of the title compound as a white powder |
With sodium hydroxide; In tetrahydrofuran; at 20℃; for 0.5h; | A mixture of 3-aminomethylbromobenzene (22.11 g, 99.5 mmol), di-tert-butyl dicarbonate (26.07 g, 119.45 mmol), sodium hydroxide (8.76 g, 219 mmol) in tetrahydrofuran (75 mL) and water (100 mL) were stirred at room temperature for 30 minutes. Extraction and work-up with methylene chloride and water, followed by drying gave tert-butyl (3-bromo-benzyl) carbamate (34.9 g) | |
Example 95 1-(3-Bromophenyl)-N-methylmethanamine To bromobenzylamine (0.890 g, 4 mmol) in THF (9 mL) was added NaOH (4.20 mL, 1 N, 4.20 mmol) and the solution was stirred at room temperature for 5 mins, when BOC2O (0.975 mL, 4.20 mmol) was added. This mixture was stirred for an additional 30 mins. The reaction mixture was diluted with EtOAc (20 mL). The organic layer was separated, washed with brine (5 mL), dried over Na2SO4, filtered and concentrated. Lithium aluminum hydride (12.00 mL, 12.00 mmol) was added to the above crude product and heated in a microwave at about 100 C. for about 1 h. The reaction mixture was diluted with Et2O (~50 mL) and quenched slowly with Na2SO4 (sat.). The organic layer was separated, dried over, filtered, and concentrated to afford the title compound (0.472 g, 59%). LC-MS m/z 200 (M+H)+. | ||
Example 167 1-(3-Bromophenyl)-N-methylmethanamine To bromobenzylamine (0.890 g, 4 mmol) in THF (9 mL) was added NaOH (4.20 mL, 1 N, 4.20 mmol) and the mixture was stirred at room temperature for 5 min where upon Boc2O (0.975 mL, 4.20 mmol) was added and that mixture was stirred for an additional 30 min. The reaction mixture was diluted with EtOAc (20 mL). The organic layer was separated, washed with brine (5 mL), dried over Na2SO4, filtered and concentrated. LAH (12.00 mL, 12.00 mmol) was added to the above crude product and heated in a microwave at 100 C. for 1 h. The reaction was quenched and diluted with Et2O (~50 mL) and quenched slowly with Na2SO4 (sat.). The organic layer was separated, dried over Na2SO4, filtered, and concentrated to afford the title compound (0.472 g, 59%). LC-MS m/z 200 (M+H)+. | ||
Example 95 l-(3-Bromophenyl)-lambda'-methylmethanamine To bromobenzylamine (0.890 g, 4 mmol) in THF (9 mL) was added NaOH (4.20 mL, 1 N, 4.20 mmol) and the solution was stirred at room temperature for 5 mins, when BOC2O (0.975 mL, 4.20 mmol) was added. This mixture was stirred for an additional 30 mins. The reaction mixture was diluted with EtOAc (20 mL). The organic layer was separated, washed with brine (5 mL), dried over Na2SOzI, filtered and concentrated. Lithium aluminum hydride (12.00 mL, 12.00 mmol) was added to the above crude product and heated in a microwave at about 100 0C for about 1 h. The reaction mixture was diluted with Et2O (-50 mL) and quenched slowly with Na2Stheta4 (sat.). The organic layer was separated, dried over, filtered, and concentrated to afford the title compound (0.472 g, 59%). LC-MS m/z 200 (M+H)+. | ||
With triethylamine; In dichloromethane; at 0 - 20℃; | General procedure: (c) A solution of Boc2O (1.29g, 5.91mmol) in CH2Cl2 (10ml) was added to a suspension of 4-bromobenzylamine (1.00g, 5.38mmol) and Et3N (0.60g, 5.91mmol) in CH2Cl2 (10ml) for 5min at 0C with a CaCl2 tube. The reaction mixture was stirred overnight at room temperature. Then, H2O (50ml) was added to the mixture, and the organic layer was separated. The aqueous layer was extracted with CHCl3 (50ml×3). The combined organic layer was washed with H2O (50ml×1) and then brine (50ml×1), dried over Na2SO4 (anhyd), filtered, and concentrated under reduced pressure to afford (4-bromobenzyl)carbamic acid tert-butyl ester (1.63g, quant. y.) as a colorless solid. | |
With sodium hydrogencarbonate; In tetrahydrofuran; at 20℃; | Add m-bromobenzylamine (1.86 g, 10 mmol) to the round bottom flask, dissolve in 100 mL of THF, add sodium bicarbonate (1.68 g, 20 mmol), and add di-tert-butyl dicarbonate (2.4 g, 11 mmol) with stirring,Stir overnight at room temperature, spin off the solution, dissolve the EA, wash with saturated brine three times, dry the organic phase over anhydrous sodium sulfate, spin dry to obtain a white solid, and directly send to the next step |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tert-butyldicarbonate; N-ethyl-N,N-diisopropylamine; In dichloromethane; at 0 - 20℃; | 26.25g of 3-Bromobenzylamine hydrochloride was suspended in 250 ml of dichloromethane, and the mixture was cooled to 0C. 33.5 g of N,N-diisopropylethylamine and 28.3 g of t-butyl dicarbonate were added. After stirring was continued at room temperature overnight, the reaction mixture was diluted with ethyl acetate. The solution was washed with water and saturated brine, dried over anhydrous magnesium sulfate, filtered, and the solvent was distilled off, to give 31.28 g of the title compound.1H-NMR (CDCl3) delta : 1.45 (s, 9H) 4.28 (d, J=6.0Hz, 2H) 4.87 (brs, 1H) 7. 20 (m, 2H) 7.38 (m, 1H) 7.43 (brs, 1H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
78% | General procedure: A solution of 1,3-benzodioxole-5-propanoic acid (20mmol) in anhydrous DMF (30ml) was treated with PyBOP (22mmol) followed by DIEPA (60mmol). After stirring at room temperature for 20 min, the corresponding amine (20mmol) was added, and the solution was stirred at room temperature overnight. The reaction was diluted with dichloromethane (100 ml) and water (100 ml). The layers were separated and the organic layer was washed with water (3 x 25 ml). The combined aqueous washes were then back-extracted with dichloromethane (50 ml), The combined organic layers were washed with brine (50 ml) and dried over magnesium sulfate, filtered and finally evaporated in vacuo. The crude material was purified by column chromatography over silica gel(dichloromethane/methanol: 100/0 to 92/8) to give the title compound (2a-2f). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
68% | With tert.-butylhydroperoxide; copper diacetate; In water; at 30℃; for 12h; | General procedure: A mixture of N-benzyl enaminoketone (1.0 mmol), di-alkylacetylenedicarboxylate (1.0 mmol), benzyl amine (1.0 mmol), Cu(OAc)2 (8 mol%) and TBHP (4.0 mmol, 0.56 mL of a 70% aqueous solution) in water (0.5 mL) was stirred at 30 C for 12 h under air. The reaction progress was monitored by TLC. After completion of the reaction, the solid was filtrated out and washed with hot ethyl acetate. Finally the solvent of the filtrate was removed under vacuum and the resulting crude product was purified by column chromatography over 60-120 mesh silica gel [ethyl acetate/petroleum ether (60-80 C)]. |
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