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CAS No. : | 856013-04-2 | MDL No. : | MFCD14702808 |
Formula : | C5H5BrN2O2S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WAYSQXHNUWIYPM-UHFFFAOYSA-N |
M.W : | 237.07 | Pubchem ID : | 57345816 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
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* 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 |
---|---|---|
ii) 6-Bromopyridine-2-sulfonamide 6-Bromopyridine-2 (1H)-thione (114 mg) was added to a mixture of bromine (0.061 ml) in water (3.6 ml) and ice (1.8g) and the mixture was stirred at 0C for 2 h. Aqueous ammonia (2 ml) was added and the mixture was stirred for 1 h at 20 C and then heated to reflux. The reaction mixture was filtered while hot and then allowed to crystallise. The solid was collected by filtration and then purified by chromatography on a 10 g silica SPE cartridge eluting with ethyl acetate-cyclohexane (3: 2) to give the title comound (63mg) LCMS RT=1. 6 min |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate;bis-triphenylphosphine-palladium(II) chloride; tetrabutylammomium bromide; In 1,4-dioxane; water; at 100℃; for 1h;Microwave irradiation; | c) 6-(8-Oxo-5,6,7,8-tetrahydro-naphthalen-2-yl)-pyridine-2-sulfonamide6-Bromo-pyridine-2-sulfonamide (65mg, 0.27 mmol), 7-(4,4,5,5-Tetramethyl- [l,3,2]dioxaborolan-2-yl)-3,4-dihydro-2H-naphthalen-l-one (97mg, 0.36 mmol), tetrabutylammonium bromide (TBAB) (lOmg, 0.04 mmol) and Pd(PPh3)2Cl2 (13mg, 0.02 mmol) in dioxane:water (1.2 mL/0.6 mL) were heated at 1000C in a microwave reactor for 1 hour. After this time, water was added and the aqueous phase was extracted three times with ethyl acetate. The combined organic phases were washed with water and brine and dried over Na2SO4. Concentration afforded a brown solid which was triturated with Et2O. An off-white solid was obtained. Analysis (NMR) showed presence of impurities but the compound was on-reacted without further purification. NMR 1H (d6-DMSO, ppm): 8.6 (d, J = 2.1 Hz, IH), 8.36 (dd, J = 8.1 and 2.1 Hz, IH), 8.20 (dd, J = 9.03 and 1 Hz, IH), 8.11 (t, J = 7.6 Hz, IH), 7.85 (dd, J = 7.6 and 1 Hz, IH), 7.53-7.50 (m, 3H), 3.01-2.98 (m, 2H), 2.66-2.62 (m, 2H), 2.10-2.04 (m, 2H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
32% | With trifluoroacetic acid; at 60℃; for 3h; | b) 6-Bromo-pyridine-2-sulfonamideTFA (2 mL) was added to 6-bromo-pyridine-2-(N-fert-butyl)-sulfonamide (478mg, 1.63 mmol) and the reaction was stirred at 6O0C for 3 hours. TFA was removed under vacuum and a mixture of Petroleum ether and Et2O was added leading to the precipitation of a brown solid. It was collected and triturated three times with Et2O. A white solid was obtained (125mg, 32%). NMR 1H (de-DMSO, ppm): 7.98 (t, J = 7.5 Hz, IH), 7.91 (dd, J = 7.5 and 1.2 Hz, IH), 7.87 (dd, J = 7.5 and 0.9 Hz, IH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With potassium carbonate; In acetonitrile; at 20℃; for 16h;Cooling; | <strong>[856013-04-2]6-Bromopyridine-2-sulphonamide</strong> (0.5 g, 2.11 mmol, prepared by the methods described in WO2005/058299) and potassium carbonate (2.92 g, 21.1 mmol) were initially charged in acetonitrile (10 ml). While cooling with ice, acetyl chloride (1.16 g, 14.8 mmol) was added dropwise and the reaction mixture was stirred at room temperature for 16 h. The solvent was removed under reduced pressure, and the residue was taken up in water and acidified with dilute hydrochloric acid solution. It was extracted with ethyl acetate and the solvent was removed under reduced pressure. This gave 0.54 g (85% of theory) of N-[(6-bromopyridin-2-yl)sulphonyl]-acetamide.HPLC-MS: LogP(HCOOH): 0.95; mass (m/z): 278.9 (M+H)+;1H NMR (d6-DMSO): 1.99 (s, 3H), 7.99-8.01 (m, 1H), 8.08 (t, 1H), 8.11-8.13 (m, 1H), 12.48 (s, 1H) ppm. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
97% | With sodium carbonate;tetrakis(triphenylphosphine) palladium(0); In water; acetonitrile; at 70℃; for 18h;Inert atmosphere; | Under argon, 3-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]pyridine (0.2 g, 0.74 mmol, prepared by the methods described in WO 2011/045224), 6-bromopyridin-2-sulphonamide (0.175 g, 0.74 mmol) and tetrakis(triphenylphosphine)palladium (0.025 g, 0.022 mmol) were added to a mixture, degassed by means of argon, of sodium carbonate solution in water (2.9 ml, 2 M/L) and acetonitrile (4 ml). The reaction mixture was stirred at 70 C. for 18 h. After cooling, the reaction mixture was poured onto water and the precipitated crystals were filtered off with suction. They were subsequently stirred with diethyl ether and filtered off with suction. This gave 0.23 g (97% of theory) of 6-[1-(pyridin-3-yl)-1H-pyrazol-4-yl]pyridine-2-sulphonamide.HPLC-MS: LogP(HCOOH): 0.99; mass (m/z): 302.1 (M+H)+ 1H NMR (d6-DMSO): 7.43 (s, 2H), 7.60-7.63 (m, 1H), 7.76 (d, 1H), 8.00 (d, 1H), 8.11 (t, 1H), 8.28-8.31 (m, 1H), 8.53 (s, 1H), 8.58-8.60 (m, 1H), 9.16-9.17 (m, 1H), 9.33 (s, 1H) ppm |
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