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CAS No. : | 845618-08-8 | MDL No. : | MFCD09754045 |
Formula : | C5H2ClF3N2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | MXCKWZRZRRBNMX-UHFFFAOYSA-N |
M.W : | 182.53 | Pubchem ID : | 33697960 |
Synonyms : |
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Signal Word: | Danger | Class: | 3 |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | 1993 |
Hazard Statements: | H225-H302-H315-H319-H335 | Packing Group: | Ⅲ |
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 triethylamine In acetonitrile at 20℃; for 4h; | 28.B A solution of 4.70 g (85% purity, 35.65 mmol) of trifluoroacetamidine and 10.93 g (35.65 mmol) of ((Z)-2-chloro-3-dimethylamino-allylidene)-dimethyl-ammonium; hexafluoro phosphate [Davies, Ian W.; Marcoux, Jean-Francois; Wu, Jimmy; Palucki, Michael; Corley, Edward G.; Robbins, Michael A.; Tsou, Nancy, Ball, Richard G.; Dormer, Peter; Larsen, Robert D.; Reider, Paul J, Journal of Organic Chemistry 2000, 65(15), 4571-4574] in 70 ml acetonitrile was treated with 4.33 ml (42.78 mol) of triethylamine and stirred for 4 h at room temperature. The reaction was poured into 250 ml of water and extracted with ether (three times). The organic phases were washed with water (two times), dried (Na2SO4) and carefully evaporated to give 3.66 g of the title compound as an orange volatile liquid. MS: 182.0 (M, 1Cl)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
120 mg | In ISOPROPYLAMIDE at 180℃; for 0.333333h; Microwave irradiation; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
36% | With triethylamine In acetonitrile at 20℃; for 5h; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
52% | Stage #1: 3-(piperidin-4-yl)-1H-pyrazol-5-amine dihydrochloride With 1,8-diazabicyclo[5.4.0]undec-7-ene In dimethyl sulfoxide at 20℃; for 0.166667h; Stage #2: 5-chloro-2-(trifluoromethyl)pyrimidine In dimethyl sulfoxide at 80℃; for 5h; | 94 3- {1- [2- (trifluoromethyl) pyrimidin-5-yl] piperidin-4-yl}-lH-pyrazol-5-amine General procedure: Produced in Reference Example 33 3- (piperidin-4-yl)-lH-pyrazol-5-amine hydrochloride (0.400 g, 1.67 mmol) in dimethyl sulfoxide (4 mL) suspension of 1,8 - diazabicyclo [5.4.0] -7-undecene (0.750mL, 5.02mmol) was added, and the mixture was stirred for 10 minutes at room temperature.Then, 3,6-dichloro pyridazine (0.249 g, 1.67 mmol) and the mixture was stirred for 4 hours at 1 hour, 60 ° C. at room temperature.After cooling to room temperature, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate.The resulting organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, under reduced pressure, and the solvent was evaporated.The obtained residue was purified by silica gel column chromatography to obtain [eluent: ethyl acetate / methanol = 95 / 5-90 / 10 (gradient) to give the title compound (71% 0.330 g, yield) It was. nstead of 3,6-dichloro-pyridazine, 5-chloro-2- (trifluoromethyl) pyrimidine (310 mg, 1.70 mmol) using, the reaction was carried out in the same manner 80 ° C. manner to that described in Reference Example 34 the title compound (273 mg, yield: 52%) was obtained |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dimethyl sulfoxide at 70℃; for 18h; | 12 [0242] 5-Chloro-2-(trifluoromethyl)pyrimidine (30 mg, 0.16 mmol) and 1,8-diazabicyclo[5.4.0]-7-undecene (0.050 mL,0.33 mmol) were added to a solution of the synthesis intermediate obtained by the procedures described above in DMSO(3 mL), and the mixture was stirred at 70°C for 18 hours. To the reaction solution, water was added, followed by extractionwith ethyl acetate three times. The organic layer was washed with brine and dried over anhydrous magnesium sulfate,and the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography[elute: hexane/ethyl acetate = 80/20 - 0/100] to obtain a protected form of diphenylmethyl. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dimethyl sulfoxide at 70℃; for 18h; | 21 [0279] 5-Chloro-2-(trifluoromethyl)pyrimidine (0.37 mL, 2.0 mmol) and DBU (0.62 mL, 4.2 mmol) were added to asolution of the obtained residue in DMSO (30 mL), and the mixture was stirred at 70°C for 18 hours. The reaction solutionwas diluted with ethyl acetate, washed with water and brine in this order, and dried over anhydrous sodium sulfate, andthe solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel column chromatography[elute: hexane/ethyl acetate = 95/5 - 50/50 (gradient)] to obtain a synthesis intermediate. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With chloro(2-dicyclohexylphosphino-2’,6’-diisopropoxy-1,1’-biphenyl)[2-(2’-amino-1,1‘-biphenyl)]palladium(II) 2nd generation; caesium carbonate; ruphos In toluene at 110℃; for 12h; | Methyl 1,1-dimethyl-2-(5-(trifluoromethyl)pyrazin-2-yl)isoindoline-4-carboxylate (31) General procedure: A mixture of methyl 1,1-dimethyl-2,3-dihydro-1H-isoindole-4-carboxylate (100 mg, 0.49 mmol), 2-chloro-5-(trifluoromethyl)pyrazine (180 mg, 0.99 mmol), 2nd Generation RuPhos precatalyst (38 mg, 0.05 mmol), RuPhos (23 mg, 0.05 mmol) and cesium carbonate (477 mg, 1.46 mmol) in toluene (3 mL) was stirred for 12 h at 110 °C. The reaction mixture was cooled to room temperature, poured into water (50 mL), and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. The crude product was purified by silica gel chromatography (eluting with 1:5 ethyl acetate/petroleum ether) to afford methyl 1,1-dimethyl-2-(5-(trifluoromethyl)pyrazin-2-yl)isoindoline-4-carboxylate (150 mg, 88%) as a yellow solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: tert-butyl (+)-4-[cis-1-(diphenylmethyl)-5-hydroxy-6-oxo-4-(trifluoromethyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridin-3-yl]piperidine-1-carboxylate With chloro-trimethyl-silane; sodium iodide In dichloromethane; acetonitrile at 20℃; for 2h; Stage #2: 5-chloro-2-(trifluoromethyl)pyrimidine With 1,8-diazabicyclo[5.4.0]undec-7-ene In dimethyl sulfoxide at 70℃; for 18h; | 6.4 (4) (+)-cis-5-Hydroxy-4-(trifluoromethyl)-3-{ 1 -[2- (trifluoromethyl)pyrimidin-5-yl]piperidin-4-yl}-1 ,4, 5,7-tetrahydro-6H-pyrazolo[3,4-b]pyridin-6-one Chlorotrimethylsilane (0.31 mE, 2.5 mmol) and sodium iodide (0.31 g, 2.1 mmol) were added to a mixed solution of tert-butyl (+)-4-[cis- 1 -(diphenylmethyl)-5-hy- droxy-6-oxo-4-(trifluoromethyl)-4,5,6,7-tetrahydro-1 Hpyrazolo[3,4-b]pyridin-3-yl]piperidine-1 -carboxylate (0.52 g, 0.91 mmol) produced in (3) in dichloromethane (25 mE) and acetonitrile (10 mE), and the mixture was stirred at room temperature for 2 hours. The solvent in the reaction solution was distilled off under reduced pressure, and the residue was separated into organic and aqueous layers by the addition of a saturated sodium bicarbonate aqueous solution and ethyl acetate. The obtained organic layer was washed with brine and dried over anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. 5-Chloro-2-(trifluoromethyl)pyrimidine (0.37 mE,2.0 mmol) and DBU (0.62 mE, 4.2 mmol) were added to a solution of the obtained residue in DM50 (30 mE), and the mixture was stirred at 70° C. for 18 hours. The reaction solution was diluted with ethyl acetate, washed with water and brine in this order, and dried over anhydrous sodium sulfate, and the solvent was distilled off under reduced pressure. The obtained residue was purified by silica gel colunm chromatography [elute: hexane/ethyl acetate=95/5- 50/50 (gradient)] to obtain a synthesis intermediate. |