Structure of 437-86-5
*Storage: {[sel_prStorage]}
*Shipping: {[sel_prShipping]}
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.
4.5
*For Research Use Only !
Change View
Size | Price | VIP Price | US Stock |
Global Stock |
In Stock | ||
{[ item.pr_size ]} |
Inquiry
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price, item.discount_usd) ]} {[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]} |
Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]} | Inquiry {[ item.pr_usastock ]} In Stock Inquiry - | {[ item.pr_chinastock ]} {[ item.pr_remark ]} In Stock 1-2 weeks - Inquiry - | Login | - + | Inquiry |
Please Login or Create an Account to: See VIP prices and availability
US Stock: ship in 0-1 business day
Global Stock: ship in 5-7 days
1-2weeks
Inquiry
{[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]}
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]}
{[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price, item.pr_usd) ]}
Inquiry
{[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price, item.vip_usd) ]}
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]}
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price, item.pr_usd) ]}
In Stock
- +
Please Login or Create an Account to: See VIP prices and availability
US Stock: ship in 0-1 business day
Global Stock: ship in 2 weeks
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
CAS No. : | 437-86-5 |
Formula : | C7H6FNO2 |
M.W : | 155.13 |
SMILES Code : | O=[N+](C1=C(F)C(C)=CC=C1)[O-] |
MDL No. : | MFCD03412242 |
InChI Key : | NBCNUIXYBLFJMI-UHFFFAOYSA-N |
Pubchem ID : | 13470957 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302+H312+H332-H315-H319-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338 |
Num. heavy atoms | 11 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.14 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 40.19 |
TPSA ? Topological Polar Surface Area: Calculated from |
45.82 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.51 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.22 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.46 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.44 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.54 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.83 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.54 |
Solubility | 0.449 mg/ml ; 0.0029 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.82 |
Solubility | 0.236 mg/ml ; 0.00152 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.43 |
Solubility | 0.576 mg/ml ; 0.00372 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 |
-5.67 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 |
2.0 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) |
1.59 |
* 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 |
---|---|---|
61% | With sodium hydroxide; In ethanol; | EXAMPLE 9 (2 R)-2-(N-(1,1-dimethylethoxycarbonyl)amino)-5-(5-methyl-2-nitrophenylamino)pentanoic acid To 696 mg (3.0 mmol) of <strong>[159877-12-0]Boc-D-Ornithine</strong> (as a 1M solution in ethanol) was added 551.5 mg (3.30 mmol) of 2-fluoro-3-nitrotoluene and 3 ml (3 mmol) of 1N sodium hydroxide. The reaction was heated to reflux for 24 hours. The reaction was concentrated/n vacuo. The product was purified by flash chromatography with acetonitrile/acetic acid/water 6/1/1. The product (620 mg, 61percent yield) was obtained was a yellow oil. mp>258° C. (dec.). MS (FAB) M/Z: 268 (M+H). 1 H NMR (300 MHz, CDCl3) delta: 1.7-2.0 (m, 4H), 2.1 (s, 9H), 2.45 (s, 3H), 3.40 (t, 2H), 4.00 (t, 1H), 6.60 (td, 1H), 7.10 (dd, 1H), 8.00 (dd, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
82% | With cesium fluoride; In dimethyl sulfoxide; at 140℃; for 10h; | Compound 2a-1: 2-Fluoro-1-methyl-3-nitrobenzene; [Show Image] Cesium fluoride (97.5 g, 642 mmol) was added under nitrogen atmosphere to a solution of 2-chloro-1-methyl-3-nitrobenzene (73.4 g, 428 mmol) in DMSO (185 mL), and the mixture was stirred at 140°C for 10 hours. The reaction mixture was then poured into 0.5N hydrochloric acid and extracted twice with ethyl acetate. The organic extract was washed with saturated saline and dried over magnesium sulfate. A crude product was obtained by vacuum concentration, and then purified by reduced-pressure distillation (boiling point: 118 °C to 122°C/ 15 mm Hg) to yield the title compound (54.4 g, 82percent) as a yellow oil. 1H NMR (DMSO-d6, 270 MHz) delta (ppm): 7.96 (m, 1H), 7.73 (m, 1H), 7.34 (t, J = 8.2 Hz, 1H), 2.35 (d, J = 2.4 Hz, 3H). HPLC Rt = 2.03 min.HPLC conditions: Column: Combi ODS (ODS, 5 mum, 4.6 mm I.D. .x. 50 mm, Wako Pure Chemical Industries), COSMOSIL (ODS, 5 mum, 4.6 mm I.D. .x. 50 mm, Nacalai Tesque), Intersil C18 (ODS, 5 mum, 4.6 mm I.D. .x. 50 mm, GL Sciences), or SunFire C18 (ODS, 5 mum, 4.6 mm I.D. .x. 50 mm, Waters);Mobile phase: Water (A) containing 0.05percent trifluoroacetic acid, and acetonitrile (B) containing 0.05percent trifluoroacetic acid;Elution method: Stepwise solvent gradient elution (Solvent composition was changed from 10percent B to 95percent B in 3.5 minutes, then changed to 10percent B in 1 minute, and kept at 10percent B for 0.5 minute);Flow rate: 4.0 mL/min. |
82% | With cesium fluoride; In dimethyl sulfoxide; | 2-Fluoro-1-methyl-3-nitrobenzene Cesium fluoride (97.5 g, 642 mmol) was added under nitrogen atmosphere to a solution of 2-chloro-1-methyl-3-nitrobenzene (73.4 g, 428 mmol) in DMSO (185 mL), and the mixture was stirred at 140°C for 10 hours. The reaction mixture was then poured into 0.5N hydrochloric acid and extracted twice with ethyl acetate. The organic extract was washed with saturated saline and dried over magnesium sulfate. A crude product was obtained by vacuum concentration, and then purified by reduced-pressure distillation (boiling point: 118 °C to 122°C/ 15 mm Hg) to yield the title compound (54.4 g, 82percent) as a yellow oil. 1H NMR (DMSO-d6, 270 MHz) delta (ppm): 7.96 (m, 1H), 7.73 (m, 1H), 7.34 (t, J = 8.2 Hz, 1H), 2.35 (d, J = 2.4 Hz, 3H). HPLC Rt = 2.03 min. HPLC conditions: Column: Combi ODS (ODS, 5 mum, 4.6 mm I.D. * 50 mm, Wako Pure Chemical Industries), COSMOSIL (ODS, 5 mum, 4.6 mm I.D. * 50 mm, Nacalai Tesque), Intersil C18 (ODS, 5 mum, 4.6 mm I.D. * 50 mm, GL Sciences), or SunFire C18 (ODS, 5 mum, 4.6 mm I.D. * 50 mm, Waters); Mobile phase: Water (A) containing 0.05percent trifluoroacetic acid, and acetonitrile (B) containing 0.05percent trifluoroacetic acid; |
82% | With cesium fluoride; In dimethyl sulfoxide; at 140℃; for 10h;Inert atmosphere; | Cesium fluoride (97.5 g, 642 mmol) was added under nitrogen atmosphere to a solution of 2-chloro-1-methyl-3-nitrobenzene(73.4 g, 428 mmol) in DMSO (185 mL), and the mixture was stirred at 140° C. for 10 hours. The reaction mixture was then poured into 0.5N hydrochloric acid and extracted twice with ethyl acetate. The organic extract was washed with saturated saline and dried over magnesium sulfate. A crude product was obtained by vacuum concentration, and then purified by reduced-pressure distillation (boilingpoint: 118° C. to 122° C./15 mm Hg) to yield the title compound (54.4 g, 82percent)as a yellow oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); In tetrachloromethane; for 24h;Reflux; | a) Preparation of Int. 14 A mixture of <strong>[437-86-5]2-fluoro-3-nitrotoluene</strong> (33 g; 213 mmol), N-bromosuccinimide (41.7 g; 234.3 mmol) and a catalytic amount of azobisisobutyronitrile in carbon tetrachloride (300 ml) was heated to reflux for 24 h. The mixture was filtered. The organic solvent was evaporated in vacuo to yield 50 g of Int. 14 (100 %). |
92% | In a 60 L reactor (containing no exposed Stainless steel, Hastelloy, or other metal parts) equipped with a reflux/return condenser and scrubber charged with a 5N NaOH solution, a mechanically stirred mixture of FN-Toluene (2.0 kg, 12.89 mol, 1.0 equiv.), N- Bromosuccinimide (3.9 kg, 21.92 mol, 1.70 equiv.), benzoyl peroxide (125.0 g, 0.03 equiv., 0.39 mol, containing 25 wt% water), and acetic acid (7.0 L, 3.5 volumes) was heated to 85 C under an atmosphere of nitrogen for 7 hours. A solution of H3PO3 (106.0 g, 1.29 mol, 0.1 equiv.) and acetic acid (200 mL, 0.1 volume), prepared in separate vessel, was added. The reaction mixture was agitated for 0.5 h and analysis of an aliquot confirmed complete decomposition of benzoyl peroxide (not detected, HPLC254 nm)- The reaction mixture was cooled to 22 C. DI Water (8.0 L, 4 volumes) and toluene (16.0 L, 8 volumes) were charged, the biphasic mixture was agitated (20 min), and the layers were separated. Aqueous 1.6N NaOH (14.0 L, 7.0 volumes) was added to the organic layer at a rate allowing the batch temperature to stay under 25 C and the pH of the resultant aqueous phase was measured (> 11). The biphasic mixture was filtered through a 5 muiotaeta Teflon cartridge line and the layers were separated. The filter line was washed with another 2L of toluene. The assay yields were 2.5 % of FN-Toluene, 62.3 % of FN-Bromide and 30.0 % of Di-Bromide. The toluene solution contained no benzoyl peroxide, succinimide, or cc- bromoacetic acid and water content by KF titration was 1030 ppm (This solution could be held under nitrogen at room temperature for > 12 h without any change in the assay yield). To this solution at room temperature was added diisopropylethylamine (880.0 g, 6.63 mol, 0.53 equiv.) followed by methanol (460 mL, 11.28 mol, 0.88 equiv.) and heated to 40 C. A solution of diethylphosphite (820.0 g, 5.63 mol, 0.46 equiv.) in methanol (460 mL, 11.28 mol, 0.88 equiv.) was prepared and added to the reaction mixture at 40 C through an addition funnel over a period of 1 hour at such a rate that the batch temperature was within 40 + 5 C. The contents were stirred for a period of 3h at 40 C from the start of addition and cooled to room temperature and held under nitrogen atmosphere for 12 hours. The assay yield of the reaction mixture was 2.5 % FN-Toluene 92.0% FN-Bromide and 0.2% Di-Bromide. This solution is used as such for the alkylation step. | |
65% | With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 5h;Heating / reflux;Product distribution / selectivity; | Compound 1a-1: 1-Bromomethyl-2-fluoro-3-nitrobenzene; [Show Image] Benzoyl peroxide (10.7 g, 44 mmol) was added under reflux under nitrogen atmosphere to a solution of <strong>[437-86-5]2-fluoro-1-methyl-3-nitrobenzene</strong> (compound 2a-1) (68.2 g, 440 mmol) and N-bromosuccinimide (95.0 g, 528 mmol) in carbon tetrachloride (1500 mL), and the mixture was stirred under reflux for 5 hours. Impurities were then removed by filtration, and a crude product was obtained by vacuum concentration. It was then purified by column chromatography (hexane), and the title compound (68.7 g, 65%) was obtained as a yellow to light brown oil. 1H NMR (DMSO-d6, 270 MHz) delta (ppm): 8.14 (dd, J = 7.0, 1.6 Hz, 1H), 7.97 (dd, J = 6.5, 1.6 Hz, 1H), 7.46 (td, J = 8.4, 1.4 Hz, 1H), 4.81 (d, J = 1.4 Hz, 2H). HPLC Rt = 2.25 min. HPLC conditions were the same as those for the manufacturing example for compound 2a-1. |
65% | With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; | 1-Bromomethyl-2-fluoro-3-nitrobenzene Benzoyl peroxide (10.7 g, 44 mmol) was added under reflux under nitrogen atmosphere to a solution of <strong>[437-86-5]2-fluoro-1-methyl-3-nitrobenzene</strong> (compound 2a-1) (68.2 g, 440 mmol) and N-bromosuccinimide (95.0 g, 528 mmol) in carbon tetrachloride (1500 mL), and the mixture was stirred under reflux for 5 hours. Impurities were then removed by filtration, and a crude product was obtained by vacuum concentration. It was then purified by column chromatography (hexane), and the title compound (68.7 g, 65%) was obtained as a yellow to light brown oil. 1H NMR (DMSO-d6, 270 MHz) delta (ppm): 8.14 (dd, J = 7.0, 1.6 Hz, 1H), 7.97 (dd, J = 6.5, 1.6 Hz, 1H), 7.46 (td, J = 8.4, 1.4 Hz, 1H), 4.81 (d, J = 1.4 Hz, 2H). |
65% | With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 5h;Reflux; Inert atmosphere; | Benzoyl peroxide (10.7 g, 44 mmol) was added under reflux under nitrogen atmosphere to a solution of <strong>[437-86-5]2-fluoro-1-methyl-3-nitrobenzene</strong> (compound 2a-1)(68.2 g, 440 mmol) and N-bromosuccinimide (95.0 g, 528 mmol) in carbontetrachloride (1500 mL), and the mixture was stirred under reflux for 5 hours.Impurities were then removed by filtration, and a crude product was obtained byvacuum concentration. It was then purified by column chromatography (hexane),and the title compound (68.7 g, 65%) was obtained as a yellow to light brownoil |
39.76% | With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; at 80℃; for 12h; | To a suspension of <strong>[437-86-5]2-fluoro-3-nitrotoluene</strong> (64.5 mmol, 10 g) and N-bromosuccinimide (77.4 mmol, 13.78 g) in 100 mL of CCl4 was added benzoyl peroxide (6.45 mmol, 1.56 g) and heated at 80 C for 12 h.After cooling to room temperature, insolubles were removed by filtration and concentrated under reduced pressure. Column chromatography (gradient elution: petroleum ether, petroleum ether / ethyl acetate = 30/1)(v / v), pure product was obtained to give 6 g of 2-fluoro-3-nitrobenzyl bromide as a yellow oily product in a yield of 39.76%. |
34% | With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane;Reflux; | A stirred solution of <strong>[437-86-5]2-fluoro-1-methyl-3-nitrobenzene</strong> (15.80 g, 101.94 mmol) and N-bromosuccinimide (18.14 g, 101.94 mmol) in CCl4 (400 mL) was treated with benzoyl peroxide (0.37 g, 1.52 mmol). The mixture was heated at reflux temperature overnight and then cooled to room temperature. The reaction mixture was filtered, and the filtrate was evaporated to dryness under reduced pressure. The residue was dissolved in CH2Cl2 (100 mL) and filtered again. The filtrate was evaporated to dryness under reduced pressure, and the residue was purified by MPLC on silica gel using a mixture of EtOAc and hexane as eluent to give 1-(bromomethyl)-2-fluoro-3-nitrobenzene (8.11 g, 34%) as an off-white solid. 1H NMR (400 MHz, CDCl3): delta 8.02 (m, 1H), 7.71 (m, 1H), 7.30 (td, 1H, J=8.4, 1.6 Hz), 4.55 (d, 2H, J=1.6 Hz). |
34% | With N-Bromosuccinimide; dibenzoyl peroxide; In tetrachloromethane; for 13h;Inert atmosphere; Reflux; | General procedure: To a stirred solution of 18(166.51 mmol), 23 (166.51 mmol) or 27 (166.51 mmol) in CCl4 (350 mL) were added NBS (199.82 mmol) and benzoyl peroxide (16.65 mmol) under nitrogen atmosphere. The mixture was heated at reflux temperature for 13 h and then cooled to room temperature. The reaction mixture was filtered and then washed with CH2Cl2 (2 × 400 mL). The combined organic layers waswashed with water (200 mL), dried over anhydrous Na2SO4, and then evaporated to dryness under reduce pressure. The residue was purified by MPLC on silica gel to afford the titled compounds. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
42% | Stage 1: (4-methoxy-phenyl)-(2-methyl-6-nitro-phenyl)amineTo a solution of 50 g of <strong>[437-86-5]2-fluoro-3-nitrotoluene</strong> in 1.1 L of DMSO are added at room temperature 59.5 g of para-anisidine (1.5 equivalents). After 5 minutes of stirring at room temperature, 57.9 g of potassium tert-butanoate (1.6 equivalents) are added to the reaction medium and the whole is heated to 110° C. for 1 hour. The reaction medium is directly hydrolyzed by adding 1 L of ice and water and then the aqueous phase is extracted several times with ethyl acetate. The organic phases are collected, dried on sodium sulphate, filtered and then dry concentrated. The raw product is chromatographed on silica gel (ether/cyclohexane:0/100, 5/95 and then 20/80) in order to provide 34.95 g of the expected compound as a dark red solid.Yield: 42percent1H NMR (CDCl3, 400 MHz) delta(ppm): 8.52 (broad s, 1H), 7.98 (d. 1H), 7.36 (d, 1H), 6.97 (1H), 6.80 (s, 4H), 3.79 (d, 3H), 2.00 (s, 3H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | In dimethyl sulfoxide; at 100℃; for 0.166667h;Microwave irradiation; | Stage 1: tert-butyl N-(2-methyl-6-nitro-phenyl)-hydrazino-carboxylate To 250 mg of 2-fluoro-3-methyl-nitrobenzene in 5 mL of DMSO are added 1.065 g of commercial tert-butoxycarbonylhydrazine (5 equivalents). The whole is brought to 100° C. for 10 min under microwave heating. The medium is hydrolyzed and then extracted with ethyl acetate several times. The organic phases are collected, dried on magnesium sulfate, filtered and evaporated under reduced pressure leading to a residue which is purified by chromatography on silica gel (cyclohexane/ethyl acetate: 80/20). 342 mg of product corresponding to the expected product are obtained. Yield: 80percent 1H NMR (CDCl3, 250 MHz) delta (ppm): 7.86 (d, 1H), 7.35 (d, 1H), 6.97 (t, 1H), 6.40 (s broad, 1H), 1.34 (s broad, 9H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
62.8% | With chromium(VI) oxide; sulfuric acid; acetic acid; In water; at 95℃; for 2h;Inert atmosphere; | Concentrated sulfuric acid (195 ml_) was added carefully with stirring to a solution of <strong>[437-86-5]2-fluoro-3-nitrotoluene</strong> (100 g, 645 mmol) in acetic acid (1000 ml_). The mixture was warmed up to 95 C and a solution of chromium trioxide (226 g, 2.25 mol) in water (200 ml) was added dropwise with stirring over 2h. After addition the mixture was heated with stirring for another 3h, allowed to cool down to room temperature and poured into water (3 L). The mixture was extracted with ethyl acetate (3 x 1 L), the combined organic layers were dried over Na2SO4 and concentrated under reduced pressure to afford a light green solid, which was washed with dichloromethane (3 x 300 ml_) and dried under vacuum to afford the title compound as a light yellow solid in the amount of 75 g (62.8% yield). 1 H NMR(300MHz, DMSO) delta ppm 8.27 (m, 1 H), 8.15 (m, 1 H), 7.48 (m, 1 H). |
62.8% | With chromium(VI) oxide; sulfuric acid; acetic acid; In water; at 95℃; | Alternative Method of Preparing methyl 3-amino-2-fluorobenzoate (Step B of Intermediate 15 Above); Step A: 2-fluoro-3-nitrobenzoic acid; Concentrated sulfuric acid (195 ml) was added carefully with stirring to a solution of <strong>[437-86-5]2-fluoro-3-nitrotoluene</strong> (100 g, 645 mmol) in acetic acid (1000 ml). The mixture was warmed up to 95 C. and the solution of chromium trioxide (226 g, 2.25 mol) in water (200 ml) was added dropwise with stirring over 2 h. After addition the mixture was heated with stirring for another 3 h, allowed to cool down to room temperature and poured into water (3 L). The mixture was extracted with ethyl acetate (3×1 L), the combined organic layers were dried over Na2SO4 and concentrated under reduced pressure to afford a light green solid, which was washed with dichloromethane (3×300 ml) and dried under vacuum to afford the title compound was obtained as a light yellow solid (75 g, 62.8%). 1H NMR (300 MHz, DMSO) delta ppm 8.27 (m, 1H), 8.15 (m, 1H), 7.48 (m, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
96% | Step J.2: (6-Chloro-pyridazin-3-yl)-(2-methyl-6-nitro-phenyl)-amineSodium hydride (60percent oil dispersion, 593 mg, 14.83 mmol) was suspended in DMF (16.1 mL). 3-amino-6-chloropyridazine (1921 mg, 14.83 mmol) was added in small portions, causing a yellow coloration and a strong gaseous evolution. The resulting slurry was stirred for 10 minutes at rt and <strong>[437-86-5]2-fluoro-3-nitrotoluene</strong> (0.785 mL, 6.45 mmol) was added as a neat liquid, causing a dramatic shift to a deep red colour. The resulting reaction mixture was stirred at rt for 50 minutes. The medium was carefully quenched in 30 mL MeOH and 10 mL water. The medium was evaporated to a thick oil. The crude was tak- en up in EtOAc (50 mL) and sonicated for few minutes. The solid materials were removed by filtration and the filtrate was washed successively with saturated aqueous sodium bicarbonate solution (2 x 50 mL), 1 M aqueous HCI (50 mL) and brine (50 mL). The combined organics were dried over Na2S04 and concentrated to yield the title com- pound as a cristalline, yellow solid, m = 1.63 g (96percent). HPLC/MS (method A) tR1.20 minute, M+H 265 . |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
15% | With N-ethyl-N,N-diisopropylamine; In 1-methyl-pyrrolidin-2-one; at 140℃; for 16h;Sealed tube; | General procedure: A mixture of 1 (1.55 mmol, unless otherwise stated), 2 (0.77 mmol), and i-Pr2NEt (1.55 mmol) in NMP (0.77 mL) was stirred at 140 °C in a sealed tube for 16 h. The mixture was allowed to cool to room temperature, diluted (DCM), washed (satd Na2CO3), dried (filtered through a Biotage® phase separator), and concentrated. Purification method A: the residue was purifiedby reverse phase automated preparative HPLC. Purification method B: the residue was purified by flash column chromatography (SiO2). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; In dimethyl sulfoxide; at 70℃;Inert atmosphere; | Example 108 l-[(3S)-l-(Cyclopropylcarbonyl)-3-pyrrolidinyl]methyl}-7-methyl-2-[4'-(methyloxy)- 4-biphenylyl]-lH-benzimidazole(a) 1,1-Dimethylethyl (35)-3-[(2-methyl-6-nitrophenyl)amino]methyl}-l- pyrrolidinecarboxylate2-Fluoro-3-nitrotoluene (5 g) was dissolved in 30 mL dry DMSO. To this was added DIEA (5.80 g) and 1,1-dimethylethyl (3S)-3-(aminomethyl)-l-pyrrolidinecarboxylate (3.49 g). The reaction flask was flushed with nitrogen and the reaction mixture stirred at 70 °C overnight. After cooling, the reaction mixture was diluted with EtOAc and washed with brine. The EtOAc layer was dried and the solvent removed by evaporation. The crude product was purified by silica gel column chromatography using petroleum ether / EtOAc to afford the titled compound. |
A187625 [1736-85-2]
2-Fluoro-1,3-dimethyl-5-nitrobenzene
Similarity: 0.91
A163600 [455-88-9]
1-Fluoro-2-methyl-4-nitrobenzene
Similarity: 0.91
A187625 [1736-85-2]
2-Fluoro-1,3-dimethyl-5-nitrobenzene
Similarity: 0.91
A163600 [455-88-9]
1-Fluoro-2-methyl-4-nitrobenzene
Similarity: 0.91
A187625 [1736-85-2]
2-Fluoro-1,3-dimethyl-5-nitrobenzene
Similarity: 0.91
A163600 [455-88-9]
1-Fluoro-2-methyl-4-nitrobenzene
Similarity: 0.91