Purity | Size | Price | VIP Price | USA Stock *0-1 Day | Global Stock *5-7 Days | Quantity | ||||||
{[ item.p_purity ]} | {[ item.pr_size ]} | Inquiry |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,item.pr_rate,1,item.pr_is_large_size_no_price) ]} |
{[ getRatePrice(item.pr_usd, 1,1,item.pr_is_large_size_no_price) ]} | Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price) ]} {[ getRatePrice(item.pr_usd,1,item.mem_rate,item.pr_is_large_size_no_price) ]} | {[ item.pr_usastock ]} | in stock Inquiry - | {[ item.pr_chinastock ]} | {[ item.pr_remark ]} in stock Inquiry - | Login | Inquiry |
Please Login or Create an Account to: See VIP prices and availability
CAS No. : | 367-31-7 | MDL No. : | MFCD00042228 |
Formula : | C6H7FN2 | Boiling Point : | - |
Linear Structure Formula : | FC6H3(NH2)2 | InChI Key : | KWEWNOOZQVJONF-UHFFFAOYSA-N |
M.W : | 126.13 | Pubchem ID : | 164584 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H315-H319-H335 | 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 |
---|---|---|
88% | In tetrahydrofuran; at 20℃;Inert atmosphere; Cooling with ice; | A stirred solution of 4-fluorobenzene-1 ,2-diamine (15.1 g, 120 mmol) in THF (120 mL) under nitrogen was cooled using an ice-bath and then was treated with di(1 -/-imidazol-1 - yl)methanone (23.4 g, 144 mmol) portion-wise over 15 min. The resulting mixture was slowly warmed to room temperature then was concentrated in vacuo after 2.5 h. The residue was suspended in a mixture of water and DCM (250 mL each) and filtered off. This residue was then washed with water (50 mL) and DCM (50 mL), before being dried at 40 C under vacuum for 16 h to give the title compound (16.0 g, 105 mmol, 88%) as a brown solid. LCMS (high pH): Rt 0.57 min; [M-H+]" = 151.1 deltaEta NMR (400 MHz, DMSO-d6) ppm 10.73 (br s, 1 H), 10.61 (br s, 1 H), 6.91-6.84 (m, 1 H), 6.78-6.70 (m, 2H). |
78% | In tetrahydrofuran; at 150℃; for 0.333333h;Microwave irradiation; | Intermediate 15: 5-Fluoro-1 ,3-dihvdro-2H-benzimidazol-2-one; A mixture of 4-fluoro-1 ,2-diaminobenzene (commercially available, 1.0 g, 7.9 mmol), carbonyldiimidazole (1.4 g) and THF (4 ml) was heated to 150 0C in a microwave reactor and stirred for 10 minutes. The mixture was heated to 150 0C and stirred for a further 10 <n="38"/>minutes. The mixture was cooled to room temperature and concentrated under vacuum. The residue was suspended in dilute hydrochloric acid and filtered. The filter-cake was washed with water and cyclohexane then dried under vacuum to give the title compound as a dark grey solid (0.95 g, 78%). 1 H-NMR (400 MHz, DMSO-d6): delta 10.73 (1 H, br s), 10.62 (1 H, br s), 6.87 (1 H, dd, J 8.5, 5 Hz), 6.78-6.70 (2H, m). UPLC-MS: 0.47 min, m/z 153 [M+H]+. |
52% | In tetrahydrofuran; at 20℃; | a) 4-Fluorobenzene-1,2-diamine (2 g, 15.86 mmol) was dissolved in THF (49.4 ml) and 1,1'-Carbonyldiimidazole (2.83 g, 17.44 mmol) was added at RT. The reaction mixture was stirred overnight at RT. To this was added concentrated ammonia solution (1.5 ml) and the mixture stirred for 30 minutes and then diluted with water (100 ml). The resultant solid was collected by filtration, washed with water, followed by Et2O and then dried in vacuo to afford 5-fluoro-1H-benzo[d]imidazol-2(3H)-one (1.250 g, 52%); 1H NMR (400 MHz, DMSO-d6) 6.66-6.79 (2H, m), 6.81-6.94 (1H, m), 10.64 (1H, s), 10.76 (1H, s); m/z: (ES+) MH+, 151.19. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
51% | In ethanol; | (a) 2-Methyl-5-fluorobenzimidazole Ethyl acetimidate hydrochloride (37.1 g, 0.3 mol) was added to a stirred suspension of 4-fluoro-ortho-phenylenediamine (12.6 g, 0.1 mol) in ethanol (150 ml) at 0 C. The mixture was allowed to warm up to room temperature and stirred overnight. The solvent was removed under reduced pressure and the residue extracted into ethyl acetate (100 ml), washed with water (3*100 ml), dried over anhydrous magnesium sulphate, filtered and evaporated. Crystallisation from ethyl acetate gave 2-methyl-5-fluorobenzimidazole (7.7 g, 51%) as a brown crystalline solid. m.p. 177-178 C. deltaH 7.46 (1H, dd, J 8.8, 4.7 Hz), 7.22 (1H, dd, J 8.9, 2.4 Hz), 6.98 (1H, ddd, J 9.7, 8.9, 2.4 Hz), 2.65 (3H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; In water;Heating / reflux; | Compound 76a:; To a 5.5 N HCI solution (11 mL) of 4-fluoro-1 ,2-phenylene diamine (1.32 g, 10.9 mmol) was added N- methyl-D-aspartic acid (2.00 g, 13.6 mmol). The mixture was refluxed for overnight. It was filtered after cooling down to room temperature. The filtrate was washed with ethyl acetate (10 mL) and EPO <DP n="56"/>concentrated to give the title compound. 1H NMR (CD3OD): delta 7.88 (1 H, dd, J=9.1 , 4.3Hz), 7.65 (1 H, dd, J=8.1 , 2.5Hz), 7.47 (1 H, td, 'J=9.4, 4.3Hz), 4.74 (1 H, dd, J=10.5, 4.5Hz), 4.09 (1 H, dd, J=15.3, 4.4Hz), 3.81 (1H, dd, J=15.2, 10.5Hz), 2.98 (3H, s). LCMS (APCI): 238.1 (M+H+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Under an N2 atmosphere, 4-fluorobenzene-l,2-diamine (5.0Og, 39.6 mmol) was suspended in EtOH (220 <n="84"/>mL) and 5M HCl (16OmL) was added. The reaction was warmed to 50C and 2,4- pentandione (8.14mL, 7.93mmol) was added and the reaction was heated to reflux for 30 min. Upon cooling to room temperature, the reaction was neutralized with a saturated solution of NaHCO3(aq) and extracted with dichloromethane. The layers were separated and the aqueous layer was washed with additional dichloromethane (2x). The organics were then combined, dried (Na2SO4), filtered and concentrated in vacuo. The resulting solid was triturated with dichloromethane to afford the title compound. 1H NMR (400MHz) (DMSO-d6) delta 7.43-7.19 (bm, 2H); 6.92 (bs, IH); 2.44 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87%Chromat. | With tetrabutylammonium tungstate; In 1-methyl-pyrrolidin-2-one; at 140℃; under 760.051 Torr; for 24h;Schlenk technique;Catalytic behavior; | General procedure: A typical procedure for the I-catalyzed reaction of aryl diamines with 1 atm CO2 was as follows: diamine (1 mmol), I (0.15 mmol), and N-methylpyrrolidone (NMP) (1 mL) were charged in a Schlenk tube with a magnetic stir bar. CO2 (1 atm) was introduced by a balloon, and the reaction mixture was stirred at 140 C for 24 h. The reaction solution was periodically analyzed by GC, LC, GC-MS, or NMR. A Teflon vessel placed in a stainless steel autoclave was used for reactions with CO2 at 20 atm. |
A1003675[ 55495-99-3 ]
4-Fluorobenzene-1,2-diamine hydrochloride
Reason: Free-salt
[ 2369-29-1 ]
3,5-Difluorobenzene-1,2-diamine
Similarity: 0.89
[ 153505-39-6 ]
3,4-Difluorobenzene-1,2-diamine
Similarity: 0.87
[ 2369-29-1 ]
3,5-Difluorobenzene-1,2-diamine
Similarity: 0.89
[ 153505-39-6 ]
3,4-Difluorobenzene-1,2-diamine
Similarity: 0.87
[ 2369-29-1 ]
3,5-Difluorobenzene-1,2-diamine
Similarity: 0.89
[ 153505-39-6 ]
3,4-Difluorobenzene-1,2-diamine
Similarity: 0.87