Structure of 1306829-95-7
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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. : | 1306829-95-7 |
Formula : | C6H5BrN4S |
M.W : | 245.10 |
SMILES Code : | CSC1=NC=C2C(NN=C2Br)=N1 |
MDL No. : | MFCD22415216 |
InChI Key : | PBEIXBIKEFRPGU-UHFFFAOYSA-N |
Pubchem ID : | 53375434 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
* 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% | To a mixture of 3-bromo-6-(methylthio)-lH-pyrazolo[3,4-i/] pyrimidine (0.49 g, 2.0 mmol) in THF (5 mL) was added met -chloroperoxybenzoic acid (0.52 g, 99%, 3 mmol) at room temperature. The white mixture was stirred for 2 h and ^-propylamine (0.82 mL, 10 mmol) was added at 0 C. The resulting solution was heated at 40 C for 12 h. After removal of the solvent, MeOH was added and the mixture was filtered. The white solid was washed with MeOH (3x) and dried to provide 3-bromo-N-propyl-lH-pyrazolo[3,4-iif]pyrimidin-6- amine (0.45 g, 88%) as a white solid. 1H NMR (400 MHz, DMSO-^6) δ 13.19 (bs, 1H), 8.63 (s, 1H), 7.69 (bs, 1H), 3.29-3.17 (m, 2H), 1.61 - 1.49 (m, 2H), 0.88 (t, J = 7.4 Hz, 3H); 13C NMR (100 MHz, DMSO-t/6) δ 161.61, 156.98, 152.71, 120.06, 106.66, 42.68, 21.72, 11.47; MS m/z 256.1 [M+l]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With potassium phosphate;tetrakis(triphenylphosphine) palladium(0); In 1,4-dioxane; water; at 150℃; for 0.333333h;microwave irradiation; | A microwave tube was charged with 3-bromo-6-(methylthio)-lH-pyrazolo[3,4- d]pyrimidine (1.0 g, 4.0 mmol), phenylboronic acid (1.5 g, 12 mmol), potassium phosphonate (2.5 g, 12 mmol), tetrakis(triphenylphosphine)palladium (0.35 g, 0,30 mmol), dioxane (16 mL) and water (4 mL) . The mixture was heated in microwave at 150 C for 20 min. The reaction mixture was poured into water. The aqueous layer was extracted with EtOAc (10X). The combined organic layer was dried (Na2S04), concentrated, and purified to provide 6- (methylthio)-3-phenyl-lH-pyrazolo[3,4-d]pyrimidme (0.85 g, 87%) as a white solid. MS m/z 243.1 [M+Hf. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | With phosphorus(V) oxybromide; at 110℃; for 3h;Inert atmosphere; | A mixture of 6-(methylsulfanyl)-1H,2H,3H-pyrazolo[3,4-d]pyrimidin-3-one (45 g, 247 mmol) and phosphoroyl tribromide (566 g, 1.97 mol) was stirred for 3 h at 110 oC under nitrogen atmosphere. After cooling down to room temperature, the resulting mixture was triturated with ethyl ether (500 mL). The solids were collected by filtration and washed with ethyl ether (2 x 100 mL). The filter cake was then triturated with ice/water (3 L). The pH value of the mixture was adjusted to pH = 5 with concentrated aqueous solution of ammonia. The resulting mixture was filtered. The filter cake was washed with water (3 x 200 mL) and dried to afford 3-bromo-6- (methylsulfanyl)-1H-pyrazolo[3,4-d]pyrimidine (55 g, 91%) as a light yellow solid. 1H NMR (400 MHz, DMSO-d6) d 14.22 (br s, 1H), 9.01 (s, 1H), 2.57 (s, 3H). LC/MS (ESI, m/z): [(M + 1)]+ = 245.15, 247.15 |
77% | To a suspension of 6-(methylthio)-lH-pyrazolo[3,4-d]pyrimidin-3(2H)-one (0.50 g, 2.7 mmol) in CH3CN (15 mL) was added a C¾CN solution of P(0)Br3 (1.57 g, 5.5 mmol) in a pressure vessel. The mixture was sonicated for 30 min before being heated to 100 C for 16 h (overnight). After it was cooled to 0 C, H20 and aqueous ammonium hydroxide were added to basify the mixture. The mixture was stirred at 0 C for lh. The aqueous layer was extracted with EtOAc (10X). The combined EtOAc layer was dried (Na2S04), and concentrated to give 3-bromo-6-(methylthio)-l//-pyrazolo[3,4-d] pyrimidine (0.51 g, 77%) as a brown solid. NMR (400MHz, DMSO-t 6) δ: 9.00 (s, 1H), 5.57 (s, 3H); MS m/z 245.00 [M+H]+. | |
40% | A mixture of 6-methylsulfanyl-1,2-dihydro-pyrazolo[3,4-d]pyrimidin-3-one (4.5 g) and POBr3 (21.21 g) was heated in a sealed tube to 170C for 8 h. The reaction mixture was cooled to 25C, diluted with water and basified with 25% aq. ammonia solution and was then extracted with EtOAc. The combined organic layers were washed with brine, dried over Na2504, filtered andevaporated under reduced pressure to afford the title compound (2.41 g, 40%) as a light brown solid. MS (ESI): mlz = 245.1 [M+H]. |
16% | With phosphorus(V) oxybromide; In acetonitrile; at 20 - 100℃; for 16.5h;Sonication; | A suspension of 6-(methylsulfanyl)- 1 H-pyrazolo [3 ,4-d]pyrimidin-3-ol (2 g, 10.98 mmol, 1.00 equiv) and phosphorus oxybromide (6.3 g, 21.98 mmol, 2.00 equiv) in acetonitrile (50 mL) was sonicated for 30 mm at room temperature. The resulting solution was allowed to react for anadditional 16 hours while the temperature was maintained at 100 C. The pH value of the solution was adjusted to 8 with ammonium hydroxide (25 %). The resulting mixture was concentrated under vacuum, diluted with ethyl acetate, and the solids were filtered out. The resulting solution was extracted with ethyl acetate and the organic layers were combined. The residue was purified by a silica gel column with dichloromethane/petroleum ether (100:0) to give 430 mg (16 %) of thetitle compound as a white solid. LC-MS (ES, m/z): 245, 247 [M+H]. |
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