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CAS No. : | 932-87-6 | MDL No. : | MFCD00015715 |
Formula : | C8H5Br | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | BPVHWNVBBDHIQU-UHFFFAOYSA-N |
M.W : | 181.03 | Pubchem ID : | 136737 |
Synonyms : |
|
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 : | 0.0 |
Molar Refractivity : | 42.25 |
TPSA : | 0.0 Ų |
GI absorption : | Low |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -4.87 cm/s |
Log Po/w (iLOGP) : | 2.32 |
Log Po/w (XLOGP3) : | 3.57 |
Log Po/w (WLOGP) : | 2.47 |
Log Po/w (MLOGP) : | 3.32 |
Log Po/w (SILICOS-IT) : | 2.86 |
Consensus Log Po/w : | 2.91 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 2.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -3.7 |
Solubility : | 0.0357 mg/ml ; 0.000197 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.26 |
Solubility : | 0.1 mg/ml ; 0.000555 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -3.33 |
Solubility : | 0.0845 mg/ml ; 0.000467 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 1.0 alert |
Leadlikeness : | 2.0 |
Synthetic accessibility : | 2.22 |
Signal Word: | Danger | Class: | N/A |
Precautionary Statements: | P280-P304+P340+P312-P305+P351+P338+P310 | UN#: | N/A |
Hazard Statements: | H318-H332 | 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 |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(II) sulphate hydrate; In toluene; at 80℃; for 15h;Inert atmosphere; | To a solution of bromoethynylbenzene (1.4 g, 8.0 mmol) in 24 mL of anhydrous toluene in a reaction vial were added methyl phenylcarbamate (1.5 g, 9.6 mmol), K3PO4 (3.4 g, 16 mmol), copper sulfate-pentahydrate (400 mg, 16 mmol), and 1,10-phenanthroline (577 mg, 3.2 mmol). The reaction mixtures was capped under an argon atmosphere, and heated in an oil bath at 80 ºC for 15 h. The progress of the reaction was monitored using TLC analysis. Upon completion, the reaction mixture was allowed to cool to room temperature, and diluted with 15 mL of ethyl acetate. The mixture was filtered through a pad of celite, and the filtrate was concentrated in vacuo. The crude residue was purified by column chromatography with eluent of Hexane/ ethyl acetate = 19/1 to give 1.6 g of 1 in 80 percent yield as a yellow oil. 1H NMR (400 MHz, CDCl3) delta 7.55 (dd, J = 1.2, 8.6 Hz, 2H), 7.45-7.40 (m, 4H), 7.33-7.28 (m, 4H), 3.92 (s, 3H). 13C NMR. (100 MHz, CDCl3) delta 154.9, 139.7, 131.5, 129.1, 128.4, 128.0, 127.2, 124.8, 123.0, 83.0, 70.3, 54.5.#10; | |
With 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; potassium carbonate; In toluene; at 80℃;Inert atmosphere; | General procedure: Procedure 1: To a solution of alkyne (9.80 mmol, 1.0 equiv) in acetone (10 mL) was added NBS (10.78 mmol, 1.1 equiv) and AgNO3 (0.98 mmol, 0.1 equiv). The resulting solution was stirred under nitrogen at room temperature for 4 h. After removing excess acetone the reaction was quenched with water and extracted with petroleum ether three times, dried over MgSO4, and concentrated under reduced pressure. The residue was eluted through a short silica column (petroleum ether) to obtain the bromoalkyne. To a dried flask was added 2-oxazolidone (4.8 mmol, 1.2 equiv), CuSO4·5H2O (100 mg, 0.4 mmol, 0.1 equiv), 1,10-phenanthroline (144 mg, 0.8 mmol, 0.2 equiv) and K2CO3 (1.38 g, 10.0 mmol, 2.5 equiv), bromoalkyne (4.0 mmol, 1.0 equiv) and this mixture was subsequently treated with anhydrous toluene (10 mL). The flask was charged with nitrogen, and the solution was heated at 80 °C overnight. After completion, the crude reaction mixture was cooled to room temperature, filtered and concentrated in vacuo. Purification of the crude residue using silica gel flash column chromatography yielded the pure ynamides. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 75℃; for 24h;Inert atmosphere; | General procedure: To a mixture of an amide (2 mmol), K3PO4 (4 mmol), CuSO4·5H2O (0.2 mmol), and 1,10-phenanthroline (0.4 mmol) in toluene under a N2 atmosphere was added a solution 1-bromoalkyne (2.2 mmol) in toluene. The reaction was stirred at 75 C for 24 h under a N2 atmosphere. The reaction mixture was cooled to room temperature, diluted with EtOAc, and filtered through Celite, and the filtrate was concentrated in vacuo. The crude product was purified by silica gel flash chromatography to afford the desired ynamide. Compounds 8 were obtained in our laboratory. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 80℃; for 15h;Inert atmosphere; | To a dehydrated toluene (24 mL) solution of (bromoethynyl) benzene (1.4 g, 8.0 mmol) in a vial was added <strong>[2603-10-3]methyl N-phenylcarbamate</strong> (1.5 g, 9.6 mmol), K 3 PO 4 (3.4 g, 16 mmol ), Copper sulfate pentahydrate (400 mg, 16 mmol) and 1,10-phenanthroline (577 mg, 3.2 mmol) were added. The reaction mixture was capped under an argon atmosphere and heated in an oil bath at 80 C. for 15 hours. The progress of the reaction was observed by TLC analysis. Upon completion, the reaction mixture was cooled to room temperature and diluted with 15 mL of ethyl acetate. The mixture was filtered through a celite pad and the filtrate was concentrated in vacuo. The crude residue was purified by column chromatography using an eluent of hexane / ethyl acetate = 19/1 to give inamide (IV-a) as a yellow oil substance in 1.6 g (80% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(II) sulphate hydrate; In toluene; at 80℃; for 15h;Inert atmosphere; | To a solution of bromoethynylbenzene (1.4 g, 8.0 mmol) in 24 mL of anhydrous toluene in a reaction vial were added methyl phenylcarbamate (1.5 g, 9.6 mmol), K3PO4 (3.4 g, 16 mmol), copper sulfate-pentahydrate (400 mg, 16 mmol), and 1,10-phenanthroline (577 mg, 3.2 mmol). The reaction mixtures was capped under an argon atmosphere, and heated in an oil bath at 80 ºC for 15 h. The progress of the reaction was monitored using TLC analysis. Upon completion, the reaction mixture was allowed to cool to room temperature, and diluted with 15 mL of ethyl acetate. The mixture was filtered through a pad of celite, and the filtrate was concentrated in vacuo. The crude residue was purified by column chromatography with eluent of Hexane/ ethyl acetate = 19/1 to give 1.6 g of 1 in 80 % yield as a yellow oil. 1H NMR (400 MHz, CDCl3) δ 7.55 (dd, J = 1.2, 8.6 Hz, 2H), 7.45-7.40 (m, 4H), 7.33-7.28 (m, 4H), 3.92 (s, 3H). 13C NMR. (100 MHz, CDCl3) δ 154.9, 139.7, 131.5, 129.1, 128.4, 128.0, 127.2, 124.8, 123.0, 83.0, 70.3, 54.5. | |
With 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; potassium carbonate; In toluene; at 80℃;Inert atmosphere; | General procedure: Procedure 1: To a solution of alkyne (9.80 mmol, 1.0 equiv) in acetone (10 mL) was added NBS (10.78 mmol, 1.1 equiv) and AgNO3 (0.98 mmol, 0.1 equiv). The resulting solution was stirred under nitrogen at room temperature for 4 h. After removing excess acetone the reaction was quenched with water and extracted with petroleum ether three times, dried over MgSO4, and concentrated under reduced pressure. The residue was eluted through a short silica column (petroleum ether) to obtain the bromoalkyne. To a dried flask was added 2-oxazolidone (4.8 mmol, 1.2 equiv), CuSO4·5H2O (100 mg, 0.4 mmol, 0.1 equiv), 1,10-phenanthroline (144 mg, 0.8 mmol, 0.2 equiv) and K2CO3 (1.38 g, 10.0 mmol, 2.5 equiv), bromoalkyne (4.0 mmol, 1.0 equiv) and this mixture was subsequently treated with anhydrous toluene (10 mL). The flask was charged with nitrogen, and the solution was heated at 80 C overnight. After completion, the crude reaction mixture was cooled to room temperature, filtered and concentrated in vacuo. Purification of the crude residue using silica gel flash column chromatography yielded the pure ynamides. | |
With 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; potassium carbonate; In toluene; at 60℃;Schlenk technique; Inert atmosphere; | General procedure: A Schlenk flask charged with a stirring bar, sulfonamide (12mmol, 1.2 equiv), K2CO3 (20mmol, 2.0 equiv), CuSO45H2O (1.0mmol, 10mol%), and 1,10-phenanthroline (2.0mmol, 20mol%) was vacuumed and backfilled with N2, repeatedly for 3 times, and then a solution of alkynyl bromide [26] (10mmol, 1.0 equiv) in toluene (10mL, 1M) was added to the mixture by a syringe. The resulting mixture was heated to 60C for 24-48h. After completion, the mixture was filtered through celite pad, and the filtrate was concentrated under reduced pressure. The residue was subjected to column chromatography on silica gel (PE/EtOAc=20/1-5/1) to give the ynamide product. |
With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 75℃; for 24h;Inert atmosphere; | General procedure: To a mixture of an amide (2 mmol), K3PO4 (4 mmol), CuSO4·5H2O (0.2 mmol), and 1,10-phenanthroline (0.4 mmol) in toluene under a N2 atmosphere was added a solution 1-bromoalkyne (2.2 mmol) in toluene. The reaction was stirred at 75 C for 24 h under a N2 atmosphere. The reaction mixture was cooled to room temperature, diluted with EtOAc, and filtered through Celite, and the filtrate was concentrated in vacuo. The crude product was purified by silica gel flash chromatography to afford the desired ynamide. Compounds 8 were obtained in our laboratory. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; potassium carbonate; In toluene; at 60℃; under 760.051 Torr; for 40h;Inert atmosphere; | The reaction mixture, which was prepared from Bromoethynylbenzene (1.38 g, 7.31mmol), <strong>[640-61-9]N-Methyl-p-toluenesulfonamide</strong> (1.23 g, 6.65 mmol), K2CO3 (1.83 g, 13.3mmol), CuSO4?5H2O (0.17 g, 0.66 mmol) and 1,10-Phenanthroline (0.24 g, 1.33mmol) in Toluene (8 mL), was stirred at 60 C for 40 h. After cooled to rt, the resulting mixture was filtered on celite, and the volatiles were removed under reduce pressure. The residue was separated by column chromatograpy on silica gel(Hexane/EtOAc = 3:1) to provide 1f (1.74 g, 92%). IR (KBr) nu 2233, 1339, 1189 cm-1; 1H NMR (400 MHz, CDCl3) delta 2.46 (s, 3H), 3.15(s, 3H), 7.07-7.32 (m, 3H), 7.32-7.64 (m, 4H) 7.84 (d, J = 8.2 Hz, 2H); 13C NMR(100 MHz, CDCl3) delta 21.6, 39.2, 68.9, 83.9, 122.6, 127.7, 127.8, 128.2, 129.7, 131.3,133.1, 144.8; EI-LRMS m/z 285 (M+), 130, 105, 89; EI-HRMS m/z calcd for C16H15NO2S (M+) 285.0823, found 285.0817. |
With potassium phosphate; 1,10-Phenanthroline; copper(II) sulphate hydrate; In toluene; at 80℃; for 15h;Inert atmosphere; | To a solution of bromoethynylbenzene (1.4 g, 8.0 mmol) in 24 mL of anhydrous toluene in a reaction vial were added methyl phenylcarbamate (1.5 g, 9.6 mmol), K3PO4 (3.4 g, 16 mmol), copper sulfate-pentahydrate (400 mg, 16 mmol), and 1,10-phenanthroline (577 mg, 3.2 mmol). The reaction mixtures was capped under an argon atmosphere, and heated in an oil bath at 80 ºC for 15 h. The progress of the reaction was monitored using TLC analysis. Upon completion, the reaction mixture was allowed to cool to room temperature, and diluted with 15 mL of ethyl acetate. The mixture was filtered through a pad of celite, and the filtrate was concentrated in vacuo. The crude residue was purified by column chromatography with eluent of Hexane/ ethyl acetate = 19/1 to give 1.6 g of 1 in 80 % yield as a yellow oil. 1H NMR (400 MHz, CDCl3) delta 7.55 (dd, J = 1.2, 8.6 Hz, 2H), 7.45-7.40 (m, 4H), 7.33-7.28 (m, 4H), 3.92 (s, 3H). 13C NMR. (100 MHz, CDCl3) delta 154.9, 139.7, 131.5, 129.1, 128.4, 128.0, 127.2, 124.8, 123.0, 83.0, 70.3, 54.5. | |
With 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; potassium carbonate; In toluene; at 60℃;Schlenk technique; Inert atmosphere; | General procedure: A Schlenk flask charged with a stirring bar, sulfonamide (12mmol, 1.2 equiv), K2CO3 (20mmol, 2.0 equiv), CuSO45H2O (1.0mmol, 10mol%), and 1,10-phenanthroline (2.0mmol, 20mol%) was vacuumed and backfilled with N2, repeatedly for 3 times, and then a solution of alkynyl bromide [26] (10mmol, 1.0 equiv) in toluene (10mL, 1M) was added to the mixture by a syringe. The resulting mixture was heated to 60C for 24-48h. After completion, the mixture was filtered through celite pad, and the filtrate was concentrated under reduced pressure. The residue was subjected to column chromatography on silica gel (PE/EtOAc=20/1-5/1) to give the ynamide product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 85℃; for 18h;Sealed tube; | General procedure: To a mixture of tert-butyloxycarbamates (8.0 mmol), K3PO4 (16 mmol), CuSO4*5H2O (0.8 mmol), and 1,10-phenanthroline (1.6 mmol) in a reaction vial was added a solution of bromoalkyne (8.8 mmol) in toluene (15 mL).The reaction mixture was capped and heatedin an oil bath at 85 C for 18 h while being monitored with TLC analysis. Upon completion, the reaction mixture was cooled to room temperature and diluted with EtOAc and filtered through Celite, and the filtrate was concentrated in vacuum. The crude products were purified by silica gel flash chromatography on a silica gel column with petroleum ether (PE) and ethylacetate (EA) as eluent to afford directing products. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
79% | General procedure: n-BuLi (0.63 mmol, 2.12 M solution in hexanes) was added dropwise to a solution of the alkyne (0.60 mmol) in THF (1.0 mL) at -78 C. The resultant solution was stirred for 30 min, whereupon a solution of ZnBr2 (0.63 mmol) in THF (0.65 mL) was added. The cooling bath was removed, and the solution was warmed to ambient temperature. The aryl iodide (0.30 mmol), PEPPSI-IPr (0.009 mmol), and LiBr (0.90 mmol) were placed into a dry, 10 mL glass sleeve. The sleeve was placed into the metal jacket of the stainless steel pressure reactor, fitted with a rubber septum, and placed under nitrogen. NMP (2 mL) was added, and the mixture was cooled to -78 C, whereupon the previously prepared zinc acetylide solution (2 mL, 0.3 M) was added dropwise. The jacket was removed from the bath, and the pressure reactor was sealed. The reactor was evacuated and backfilled with CO(g) (three cycles, 60 psi). The reactor was heated to 80 C (oil bath) with stirring for 24 h at 60 psi of CO(g). The reaction mixture was diluted with CH2Cl2 (20 mL) and brine (20 mL). The layers were separated, and the aqueous layer was extracted with CH2Cl2 (2×10 mL). The combined organics were dried (MgSO4), filtered, and concentrated under reduced pressure. The crude residue was purified by flash column chromatography, eluting with the indicated solvent to deliver the desired ketone. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With copper(l) iodide; 8-quinolinol; sodium phosphate; In ethanol; at 80℃; for 24h; | General procedure: A 5.0 mL of reaction tube was charged with organoboron compound (1.0 mmol), alkynyl bromide (1.0 mmol), CuI (0.10 mmol), 8-hydroxyquinoline (0.20 mmol), ethanol (2.0 mmol). The mixture was stirred at 80 C for 24 h, and then washed with ethyl acetate (3.0 mL×3), the combined ethyl acetate was concentrated under reduced pressure. The obtained residue was purified by flash column chromatography on silica gel (petroleum ether as eluting agent) to give the corresponding pure cross-coupling product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With copper(l) iodide; 8-quinolinol; sodium phosphate; In ethanol; at 80℃; for 24h; | General procedure: A 5.0 mL of reaction tube was charged with organoboron compound (1.0 mmol), alkynyl bromide (1.0 mmol), CuI (0.10 mmol), 8-hydroxyquinoline (0.20 mmol), ethanol (2.0 mmol). The mixture was stirred at 80 C for 24 h, and then washed with ethyl acetate (3.0 mL×3), the combined ethyl acetate was concentrated under reduced pressure. The obtained residue was purified by flash column chromatography on silica gel (petroleum ether as eluting agent) to give the corresponding pure cross-coupling product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | With copper(l) iodide; 8-quinolinol; sodium phosphate; In ethanol; at 80℃; for 24h; | General procedure: A 5.0 mL of reaction tube was charged with organoboron compound (1.0 mmol), alkynyl bromide (1.0 mmol), CuI (0.10 mmol), 8-hydroxyquinoline (0.20 mmol), ethanol (2.0 mmol). The mixture was stirred at 80 C for 24 h, and then washed with ethyl acetate (3.0 mL×3), the combined ethyl acetate was concentrated under reduced pressure. The obtained residue was purified by flash column chromatography on silica gel (petroleum ether as eluting agent) to give the corresponding pure cross-coupling product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
90% | With copper(l) iodide; 8-quinolinol; sodium phosphate; In ethanol; at 80℃; for 24h; | General procedure: A 5.0 mL of reaction tube was charged with organoboron compound (1.0 mmol), alkynyl bromide (1.0 mmol), CuI (0.10 mmol), 8-hydroxyquinoline (0.20 mmol), ethanol (2.0 mmol). The mixture was stirred at 80 C for 24 h, and then washed with ethyl acetate (3.0 mL×3), the combined ethyl acetate was concentrated under reduced pressure. The obtained residue was purified by flash column chromatography on silica gel (petroleum ether as eluting agent) to give the corresponding pure cross-coupling product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
92% | With water; at 120℃; for 6h; | General procedure: The mixture of 1-bromoalkyne (1 mmol) and amine (1.5 mmol) in water (2 mL) was stirred at 120 C for 6 h in a 25 mL schlenk tube. Water (8 mL) was added after completion of the reaction, the aqueous solution was extracted with diethyl ether (3×5 mL) and the combined extract was dried with anhydrous MgSO4. The solvent was removed and the crude product was separated by column chromatography to give the pure sample. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With water; at 120℃; for 15h; | General procedure: The mixture of 1-bromoalkyne (1 mmol) and amine (1.5 mmol) in water (2 mL) was stirred at 120 C for 6 h in a 25 mL schlenk tube. Water (8 mL) was added after completion of the reaction, the aqueous solution was extracted with diethyl ether (3×5 mL) and the combined extract was dried with anhydrous MgSO4. The solvent was removed and the crude product was separated by column chromatography to give the pure sample. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
61% | With silver fluoride; potassium hydrogencarbonate; bis(dibenzylideneacetone)-palladium(0); In acetonitrile; at 20℃; for 12h; | General procedure: Alkynyl halide 1 (0.2 mmol), aryltrialkoxysilane 2 (0.4 mmol), Pd(dba)2 (3 mol %), AgF (3 equiv.), KHCO3 (2 equiv.), all values compared to 1, and MeCN (2 mL) were added to a Schlenk tube in turn. Then the solution was stirred at room temperature for the indicated time (usually 12 h) until complete consumption of starting material as monitored by TLC and GC-MS analysis. Afterthe reaction was finished, the crude reaction mixture was filtered, poured into diethyl ether (10 mL), washed with brine (3 mL × 3), extracted with diethyl ether (5 mL × 3), dried over anhydrous Na2SO4, and evaporated under reduced pressure. The residue was purified by flash column chromatography on silica gel (hexane/ethyl acetate) to afford the desired product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 85℃; for 18h;Sealed tube; | General procedure: To a mixture of tert-butyloxycarbamates (8.0 mmol), K3PO4 (16 mmol), CuSO4*5H2O (0.8 mmol), and 1,10-phenanthroline (1.6 mmol) in a reaction vial was added a solution of bromoalkyne (8.8 mmol) in toluene (15 mL).The reaction mixture was capped and heatedin an oil bath at 85 C for 18 h while being monitored with TLC analysis. Upon completion, the reaction mixture was cooled to room temperature and diluted with EtOAc and filtered through Celite, and the filtrate was concentrated in vacuum. The crude products were purified by silica gel flash chromatography on a silica gel column with petroleum ether (PE) and ethylacetate (EA) as eluent to afford directing products. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 85℃; for 18h;Sealed tube; | General procedure: To a mixture of tert-butyloxycarbamates (8.0 mmol), K3PO4 (16 mmol), CuSO4*5H2O (0.8 mmol), and 1,10-phenanthroline (1.6 mmol) in a reaction vial was added a solution of bromoalkyne (8.8 mmol) in toluene (15 mL).The reaction mixture was capped and heatedin an oil bath at 85 C for 18 h while being monitored with TLC analysis. Upon completion, the reaction mixture was cooled to room temperature and diluted with EtOAc and filtered through Celite, and the filtrate was concentrated in vacuum. The crude products were purified by silica gel flash chromatography on a silica gel column with petroleum ether (PE) and ethylacetate (EA) as eluent to afford directing products. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium phosphate; 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; In toluene; at 85℃; for 18h;Sealed tube; | General procedure: To a mixture of tert-butyloxycarbamates (8.0 mmol), K3PO4 (16 mmol), CuSO4*5H2O (0.8 mmol), and 1,10-phenanthroline (1.6 mmol) in a reaction vial was added a solution of bromoalkyne (8.8 mmol) in toluene (15 mL).The reaction mixture was capped and heatedin an oil bath at 85 C for 18 h while being monitored with TLC analysis. Upon completion, the reaction mixture was cooled to room temperature and diluted with EtOAc and filtered through Celite, and the filtrate was concentrated in vacuum. The crude products were purified by silica gel flash chromatography on a silica gel column with petroleum ether (PE) and ethylacetate (EA) as eluent to afford directing products. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | In methanol; water; at 80℃; for 24h;Inert atmosphere; Schlenk technique; | A mixture of 2a (0.05 mmol), CuBr2 (0.05 mmol) in H2O, and CH3OH (1 mL for each) was stirred at 80C under Ar atmosphere for 24 h. The combined organic layer was washed with brine, extracted with ethyl acetate, dried over Na2SO4, and evaporated under reduced pressure. The crude product was purified by silica gel column chromatography to give the corresponding products. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94.5% | With [1,1'-bis(diphenylphosphino)ferrocene]nickel(II) chloride; N-ethyl-N,N-diisopropylamine; bis-[(trifluoroacetoxy)iodo]benzene; In N,N-dimethyl-formamide; acetonitrile; at 70℃; for 12h;Inert atmosphere;Catalytic behavior; | To a solution of N, N-dimethylformamide (DMF) in a volume ratio of 1: 3 to the appropriate reaction solvent in a nitrogen atmosphere and at room temperatureAcetonitrile,100 mmol of <strong>[25309-65-3]p-ethylbenzonitrile</strong>,40 mmol of phenylethyl bromide,16 mmol of catalyst [1,1'-bis (diphenylphosphino) ferrocene] nickel dichloride,150 mmol Oxidant bis (trifluoroacetic acid) iodobenzene (PhI (TFA) 2),200 mmol of base N, N-diisopropylethylamine (DIPEA) and 20 mmol of a promoter (a mixture of 4 mmol of tetraphenylporphyrin and 16 mmol of niobium pentachloride)And then stirred to 70 C,And incubation reaction for 12 hours;After the reaction is filtered,The filtrate was concentrated under reduced pressure,The residue was separated by silica gel column chromatography,Thereby obtaining a compound of the above formula (III)The yield was 94.5%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | With copper(I) oxide; 1,10-Phenanthroline; at 60℃; for 4h; | General procedure: Cu2O (7.2mg, 0.05mmol, 10molpercent), 1,10-phenanthroline (9.0mg, 0.05mmol, 10molpercent), 5-stibanotriazole (1: 0.5mmol) and bromoacetylene (4: 0.75mmol, 1.5 eq.) were dissolved in DMF (4mL). The reaction mixture was stirred at 60°C. The reaction mixture was diluted with CH2Cl2 (20mL) and water (20mL). The phases were separated and aqueous layer was extracted with CH2Cl2 (20mL×2). The combined organic layers were washed brine (20mL), dried over MgSO4, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (n-hexane: AcOEt=4: 1), affording compound 5, 7?18. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | In a Schlenck tube, <strong>[7150-72-3]tert-butyl N-ethenylcarbamate</strong> 7a (1.74 eq., 100 mg, 0.698 mmol) andtBuOK (1.91 eq., 86 mg, 0.766 mmol) were dissolved in DMSO (1 mL) under air atmosphereat 55 C. The mixture was stirred for 1 minute. Then 1,10-phenanthroline (2.6 eq., 188 mg, 1.05mmol) and ((thiophene-2-carbonyl)oxy)copper (1.29 eq., 99 mg, 0.519 mmol) were added. Theresulting mixture was stirred for another minute. Finally (2-bromoethynyl)benzene 8a (1 eq.,72.8 mg, 0.05 mL, 0.402 mmol) as a DMSO solution (1 mL) was added to the mixture. After10 minutes, the reaction was complete as judged by TLC (99:1, petroleum ether:ethyl acetate).The mixture was diluted with EtOAc, filtered over a pad of silica gel, washed with water andthen the organic layer was dried over MgSO4. After filtration, the solvent was removed undervacuum. The crude oil was purified by silica gel chromatography (100:0 to 95:5, petroleum ether:ethyl acetate) to give tert-butyl N-ethenyl-N-(2-phenylethynyl)carbamate 5a (69.5 mg,0.286 mmol, 74%) as slightly yellow oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,10-Phenanthroline; copper(ll) sulfate pentahydrate; potassium carbonate; In toluene; at 60℃;Schlenk technique; Inert atmosphere; | General procedure: A Schlenk flask charged with a stirring bar, sulfonamide (12mmol, 1.2 equiv), K2CO3 (20mmol, 2.0 equiv), CuSO45H2O (1.0mmol, 10mol%), and 1,10-phenanthroline (2.0mmol, 20mol%) was vacuumed and backfilled with N2, repeatedly for 3 times, and then a solution of alkynyl bromide [26] (10mmol, 1.0 equiv) in toluene (10mL, 1M) was added to the mixture by a syringe. The resulting mixture was heated to 60C for 24-48h. After completion, the mixture was filtered through celite pad, and the filtrate was concentrated under reduced pressure. The residue was subjected to column chromatography on silica gel (PE/EtOAc=20/1-5/1) to give the ynamide product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
74% | With sodium metabisulfite; ammonium fluoride; 9-(2-mesityl)-10-methylacridinium perchlorate; In acetonitrile; for 48h;Inert atmosphere; Irradiation; | Add 0.2mmol of phenylacetylene bromide, 0.4mmol of sodium metabisulfite, 0.3mmol of <strong>[1040745-70-7]potassium cyclopentyltrifluoroboranuide</strong>, 0.4mmol of ammonium fluoride, and 2.0mmol of Mes-Acr + ClO4- into the reaction tube in order, and plug the reaction with a rubber stopper After the tube is placed in high purity nitrogen to replace the gas,After making the system under anaerobic conditions, add 2.0 mL of acetonitrileThe reaction was stirred under a 35W fluorescent lamp. After 48 hours of reaction, the reaction solution was directly concentrated under reduced pressure, and subjected to column chromatography.Using a mixture of petroleum ether and ethyl acetate as the mobile phase,Compound Example 1 was obtained. The yield was 74%. |
Tags: 932-87-6 synthesis path| 932-87-6 SDS| 932-87-6 COA| 932-87-6 purity| 932-87-6 application| 932-87-6 NMR| 932-87-6 COA| 932-87-6 structure
[ 1321929-32-1 ]
4-(Bromoethynyl)-1,1'-biphenyl
Similarity: 0.87
[ 1321929-32-1 ]
4-(Bromoethynyl)-1,1'-biphenyl
Similarity: 0.87
[ 1321929-32-1 ]
4-(Bromoethynyl)-1,1'-biphenyl
Similarity: 0.87
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