Structure of 2-Bromo-3-chloroaniline
CAS No.: 96558-73-5
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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. : | 96558-73-5 |
Formula : | C6H5BrClN |
M.W : | 206.47 |
SMILES Code : | BrC1=C(N)C=CC=C1Cl |
MDL No. : | MFCD10699543 |
InChI Key : | JHHMLFBYFNAPDZ-UHFFFAOYSA-N |
Pubchem ID : | 11843442 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302 |
Precautionary Statements: | P301+P312+P330 |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.0 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 0.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 43.56 |
TPSA ? Topological Polar Surface Area: Calculated from |
26.02 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.84 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.56 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.69 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.84 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.46 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.48 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.23 |
Solubility | 0.123 mg/ml ; 0.000594 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.75 |
Solubility | 0.364 mg/ml ; 0.00176 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.51 |
Solubility | 0.0635 mg/ml ; 0.000308 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) |
Yes |
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 |
-5.74 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) |
1.42 |
* 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 diphenyl phosphoryl azide; triethylamine; In toluene; tert-butyl alcohol; at 80 - 100℃; for 20h; | Starting from 2-bromo-3-chloro-benzoic acid (500 mg; CAS 56961-26-3) dissolved in 5 ml toluene, was treated with triethylamine (0.3 ml), diphenylphosphorylazide (0.69 ml) and t-butanol (3.6 ml) and heated 2 hrs at 80 C. Additional tert-butanol (3.6 ml) was added and the solution stirred 18 hrs at 100 C. The reaction mixture was evaporated to dryness and chromatographed (silica gel; AcOEt/heptane, 1/19) to yield 2-bromo-3-chloro-phenylamine as a white solid (410 mg). MS: 305/307 (M+H+)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
77% | With trifluoroacetic acid; In dichloromethane; at 20℃; for 3h; | Step B: 2-bromo-3-chloroaniline [0186] To tert-butyl (2-bromo-3-chlorophenyl)carbamate (0.4 g) in DCM (20 mL) was added TFA (10 mL). The reaction mixture was stirred at RT for 3 hours and then concentrated. Water (10 mL) was added to the residue, and the mixture was extracted with DCM (2 x 20 mL). The organic phase was separated, washed with aqueous saturated NaHC03 and saturated NaCl, dried over anhydrous Na2S04, and concentrated to give the title compound as a solid (0.2 g, 77%). 1H NMR (400 MHz, CDC13) delta 7.03-6.99 (IH, m), 6.85- 6.83 (IH, d, J=8.0 Hz), 6.65-6.63 (IH, d, J=8.0 Hz), 4.25 (2H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With pyridine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In dichloromethane; at 20℃;Inert atmosphere; | General procedure: To a solution of acid 1 (0.05 mmol), EDCI·HCl (0.12 mmol), and pyridine (0.13 mmol) in CH2Cl2 (1 mL) was added the corresponding aniline (0.1 mmol) and stirred at room temperature under Ar overnight. Upon complete consumption of acid 1, the solvent was removed in vacuo and redissolved in THF (1 mL). The reaction mixture was then treated with TBAF (0.2 mmol) and stirred for 30 min, and upon completion saturated aqueous NH4Cl was added and extracted 3× with EtOAc. The combined organic layers were then dried over Na2SO4, filtered, and concentrated in vacuo to give a crude oil. The residue was purified via flash chromatography (SiO2, 49:1, CH2Cl2/MeOH) to afford the desired amide. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; sodium acetate; sodium nitrite; In water; at 0 - 20℃; for 2.25h; | To a stirring mixture of <strong>[96558-73-5]2-bromo-3-chloroaniline</strong>(20 mmol) in 1M HCl(25 mL)and water(5 mL) at 0 oc was added NaN02(1.38 g,20 mmol) in water(20 mL),CH3C00Na(9.23 g,112 mmol) in water(25 mL) and ethyl 2-oxocyclopentane carboxylate(3.0 mL,20 mmol) in sequence. The reaction mixture was stirred for 15 min at 0 oc thenwarmed to 20 oc over 2h and extracted with CH2Ch,dried over MgS04,filtered and concentrated in vacuo to give the title compound as a red oil in 7.1 g(90% crude). | |
With hydrogenchloride; sodium acetate; sodium nitrite; In water; at 0℃; for 0.25h; | Step A. Preparation of 5-(2-(2-bromo-3-chlorophenyl)hydrazono)-6-ethoxy-6-oxohexanoic acid To a stirring mixture of <strong>[96558-73-5]2-bromo-3-chloroaniline</strong> (4.1 g, 20 mmol) in 1M HCl (25 mL) and water (5 mL) at 0 C. was added NaNO2 (1.38 g, 20 mmol) in water (20 mL), NaCH3COOH (9.23 g, 112 mmol) in water (25 mL) and ethyl 2-oxocyclopentane carboxylate (3.0 mL, 20 mmol) in sequence. The reaction mixture was stirred for 15 min at 0 C. then warmed to 20 C. over 2 h and extracted with CH2Cl2, dried over MgSO4, filtered and concentrated in vacuo to give the title compound as a red oil in 7.0 g (90% crude). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; sodium carbonate; lithium chloride; In N,N-dimethyl-formamide; at 100℃; for 4h;Inert atmosphere; Sealed tube; | General procedure: Tert-butyl (R)-(5-(trimethylsilyl)pent-4-yn-2-yl)carbamate (160 mg, 0.63 mmol) was added in DMF (2.5 mL) to a sealed vial containing amino-halide (0.5 mmol), sodium carbonate (106 mg, 1.00 mmol), lithium chloride (21.00 mg, 0.50 mmol) and Pd(dppf)Cl2.CH2Cl2 (14.62 mg, 0.02 mmol). The reaction was degassed for 10 min, then heated to 100 C for 4 hours. After cooling, the reaction was diluted with EtOAc and washed with water and brine. The organic was dried over Na2SO4 and evaporated, then the crude product was purified by flash silica chromatography (EtOAc / heptane). Pure fractions were evaporated to dryness to afford the indole. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | 2-Bromo-3-chloroaniline (600 g, 2.91 mol) and concentrated aqueous HCI (1500 mL, 49.4 mol) in water (1500 mL) were placed into a 4-necked RBF. The mixture was stirred overnight to give a solution. A solution of NaN02 (212 g, 3.07 mol) in water (720 mL) was added dropwise with stirring at 0-5 C. After 1.5 h, a solution of KOAc (4020 g, 40.9 mol) in water (6000 mL) and methyl 2-oxocyclopentane-1 -carboxylate (420 g, 2.95 mol) was added dropwise with stirring at 0-5 C. The resulting solution was stirred at 0-5 C for 0.5 h then for 2 h at RT. The solution was then extracted with 2 x10 L of DCM. The combined organic phases were washed with 1 x 5 L of brine. The solution was dried over anhydrous Na2S04 and concentrated to yield methyl 1-((2-bromo-3-chlorophenyl)diazenyl)-2-oxocyclopentane-1 -carboxylate (1070 g, 100%, 97 wt%). | |
100% | 2-Bromo-3-chloroaniline (600 g, 2.91 mol) and concentrated aqueous HCI (1500 mL, 49.4 mol) in water (1500 mL) were placed into a 4-necked RBF. The mixture was stirred overnight to give a solution. A solution of NaN02 (212 g, 3.07 mol) in water (720 mL) was added dropwise with stirring at 0-5 C. After 1 .5 h, a solution of KOAc (4020 g, 40.9 mol) in water (6000 mL) and methyl 2-oxocyclopentane-1 -carboxylate (420 g, 2.95 mol) was added dropwise with stirring at 0-5 C. The resulting solution was stirred at 0-5 C for 0.5 h then for 2 h at RT. The solution was then extracted with 2 x10 L of DCM. The combined organic phases were washed with 1 x 5 L of brine. The solution was dried over anhydrous ^SC and concentrated to yield methyl 1 -((2-bromo-3-chlorophenyl)diazenyl)-2-oxocyclopentane-1 -carboxylate (1070 g, 100%, 97 wt%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | A mixture of <strong>[96558-73-5]2-bromo-3-chloroaniline</strong> (2.00 kg, 9.69 mol), hydrochloric acid (36 wt%, 4.85 L, 58.1 mol) and water (5 L) was stirred for 1 h. The resulting solution was cooled to 0 C, then a solution of NaNC>2 (702 g, 10.2 mol) in water (2.4 L) was gradually added over 1 h at 0-5C. After stirring for 1 h, methyl 2-oxocyclopentane-1 -carboxylate (1.38 kg, 9.69 mol) was gradually added at 0-5C. Then a solution of KOAc (13.3 kg, 136 mol) in water (20 L) was added gradually. The resulting solution was allowed to react for an additional 45 min at 0-5 C. The solution was then extracted three times with DCM (12 L per extraction). The combined organic extracts were washed with brine (10 L) and then charged to another reactor containing a solution of cone, sulfuric acid (4.75 kg, 48.5 mol) in MeOH (3.1 kg). The resulting solution was allowed to react for 3 h at 10-20 C. The solution was concentrated to about 8 L and then two cycles of adding MeOH (18 L per cycle) and distilling off solvent (18 L per cycle) under reduced pressure were completed. The resulting slurry was cooled to 0-10 C, stirred for 1 h and then filtered. The solid was washed with MeOH (2 x 2 L) and then dried in an oven under reduced pressure to give (E/Z)-dimethyl 2-(2-(2-bromo-3-chlorophenyl)hydrazono)hexanedioate, (0229) (Intermediate 1 , 3.3 kg, 94 wt%, 82%); m/z (ES+), [M+H]+ = 391. NMR (500 MHz, (0230) CHLOROFORM-d, 27C) delta 1.98 (m, 2H), 2.41 (t, 2H), 2.59 (t, 2H), 3.66 (s, 3H), 3.87 (s, 3H), 7.05 (dd, 1 H), 7.17 - 7.23 (m, 1 H), 7.49 (dd, 1 H), 12.48 (bs, 1 H). |